US3567098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fastener driving apparatus operable under pressure conditions greater than line pressure
Assignee: Stanley Bostich Inc
•
Filing: 1966-12-23
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Granted: 1971-03-02
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Expires: 1986-12-23
Abstract
Abstract A fastener driving apparatus in which the fastener driving means in the form of a piston and piston rod construction is mounted within a cylinder which is movable from a first position into a second position by fluid pressure in the reservoir of the apparatus, while the fastener driving means is maintained in a fastener receiving position. Movement of the cylinder from the first position to the second position establishes a negative pressure beneath the driving piston and/or a pressure equal to reservoir pressure or greater than reservoir pressure above the driving piston so that when the fastener driving means is released it will move from the fastener receiving position into a fastener driven position under differential pressure conditions which are greater than reservoir pressure above the piston and atmospheric pressure below the piston. The apparatus is actuated by a work contacting member and a trigger member through an interlock means which effects movement of an actuating valve into an actuating position in response (1) to the simultaneous movement of the work contacting and trigger members into their operative positions, (2) to the movement of the work contacting member into its operative position when the trigger member is in its operative position or (3) to the movement of the trigger member into its operative position when the work contacting member is in its operative position. The interlock means comprises an elongated interlock member having a transversely extending slot formed in the central portion thereof through which a pivot pin carried by the housing is disposed, one end of the interlock member having a lost motion connection with the work contacting member and the other end of the interlock member having a lost motion connection with the trigger, the interlock member including an actuating valve engaging portion intermediate the ends thereof.
Inventors
- 👤 George A Maynard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:08
CPC Classifications
B; B25; B25C; B25C1/00; B25C1/04; B25C1/041
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
188 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, fastener driving means carried by said housing for movement from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and from said fastener driven position back into said fastener receiving position, means within said housing defining a driving pressure chamber disposed in fluid pressure communicating relation to said fastener driving means, and means operable by fluid under pressure from said reservoir for establishing a driving fluid pressure higher than said reservoir fluid pressure within said driving chamber acting on said fastener driving means with said fastener driving means in said fastener receiving position and for effecting movement of said fastener driving means from said fastener receiving position to said fastener driven position under the action of said higher driving pressure.
Claim 2
Dependent Claim
188 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, fastener driving means carried by said housing for movement from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and from said fastener driven position back into said fastener receiving position, means within said housing defining a driving pressure chamber disposed in fluid pressure communicating relation to said fastener driving means, and means operable by fluid under pressure from said reservoir for establishing a driving fluid pressure higher than said reservoir fluid pressure within said driving chamber acting on said fastener driving means with said fastener driving means in said fastener receiving position and for effecting movement of said fastener driving means from said fastener receiving position to said fastener driven position under the action of said higher driving pressure.
Claim 3
Dependent Claim
189 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, fastener driving means carried by said housing for movement from a fastener receiving position through said drive track means into a fastener driven position a fastener in said drive track means into a workpiece and from said fastener driven position back into said fastener receiving position, means within said housing defining a driving pressure chamber disposed in fluid pressure communicating relation to said fastener driving means, and means operable by fluid under pressure from said reservoir for establishing a positive driving fluid pressure and a negative driving fluid pressure within said dRiving chamber acting on said fastener driving means with said fastener driving means in said fastener receiving position and for effecting movement of said fastener driving means from said fastener receiving position to said fastener driven position under the action of said positive and negative driving pressures.
Claim 4
Dependent Claim
189 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, fastener driving means carried by said housing for movement from a fastener receiving position through said drive track means into a fastener driven position a fastener in said drive track means into a workpiece and from said fastener driven position back into said fastener receiving position, means within said housing defining a driving pressure chamber disposed in fluid pressure communicating relation to said fastener driving means, and means operable by fluid under pressure from said reservoir for establishing a positive driving fluid pressure and a negative driving fluid pressure within said dRiving chamber acting on said fastener driving means with said fastener driving means in said fastener receiving position and for effecting movement of said fastener driving means from said fastener receiving position to said fastener driven position under the action of said positive and negative driving pressures.
Claim 5
Dependent Claim
21 words
Fastener driving apparatus as defined in claim 2 wherein said positive driving fluid pressure is higher than said reservoir fluid pressure.
Claim 6
Dependent Claim
249 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, means within said housing defining a driving chamber including a cylinder, a driving piston reciprocably mounted within said cylinder, a fastener driving member operatively connected with said driving piston for movement therewith in a driving g stroke from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and in a return stroke from said fastener driven position into said fastener receiving position means operable by fluid under pressure from said reservoir means for establishing a driving fluid pressure higher than said reservoir fluid pressure within said driving chamber acting on said driving piston with said fastener driving member in said fastener receiving position in a direction to move said fastener driving member through said driving stroke, and means for retaining said fastener driving member in said fastener receiving position during the establishment of said higher driving fluid pressure and for releasing the same after the establishment of said higher driving pressure to thereby permit the movement of said driving piston under the action of said higher driving pressure and hence the movement of said fastener driving means through said driving stroke.
Claim 7
Dependent Claim
249 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, means within said housing defining a driving chamber including a cylinder, a driving piston reciprocably mounted within said cylinder, a fastener driving member operatively connected with said driving piston for movement therewith in a driving g stroke from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and in a return stroke from said fastener driven position into said fastener receiving position means operable by fluid under pressure from said reservoir means for establishing a driving fluid pressure higher than said reservoir fluid pressure within said driving chamber acting on said driving piston with said fastener driving member in said fastener receiving position in a direction to move said fastener driving member through said driving stroke, and means for retaining said fastener driving member in said fastener receiving position during the establishment of said higher driving fluid pressure and for releasing the same after the establishment of said higher driving pressure to thereby permit the movement of said driving piston under the action of said higher driving pressure and hence the movement of said fastener driving means through said driving stroke.
Claim 8
Dependent Claim
110 words
Fastener driving apparatus as defined in claim 4 wherein said higher pressure establishing means comprises pistonhead means of a size greater than said driving piston operatively connected with said cylinder, means within said housing defining with one side of said pistonhead means a pressure chamber including a cylindrical surface receiving said pistonhead means for longitudinal sliding movement therein between first and second positions, and valve means carried by said housing operable to communicate said pressure chamber with the fluid under pressure within said reservoir means to move said pistonhead means from said first position to said second position to thereby establish said higher drive fluid pressure within said driving chamber.
Claim 9
Dependent Claim
140 words
Fastener driving apparatus as defined in claim 5 including a work contacting member carried by said housing for movement from an inoperative position to an operative position in response to the movement of said apparatus into cooperating engagement with a workpiece, a trigger member carried by said housing for manual movement from an inoperative position to an operative position, and interlock means for operating said valve means in response (1) to the simultaneous movement of said work contacting and said trigger members into their operative positions. (2) to the movement of said work contacting member into its operative position when said trigger member is in its operative position when said trigger member is in its operative position or (3) to the movement of said trigger member into its operative position when said work contacting member is in its operative position.
Claim 10
Dependent Claim
118 words
Fastener driving apparatus as defined in claim 6 wherein said interlock means comprises an elongated interlock member having a transversely extending slot formed in the central portion thereof, a pivot pin carried by said housing disposed within said slot, means connecting one enD of said interlock member with said work contacting member for movement thereby in response to the movement of said work contacting member from said inoperative position to said operative position, means for connecting the other end of said interlock member with said trigger for movement in response to the movement of said trigger member from said inoperative position to said operative position, said interlock member including a valve means engaging portion intermediate the ends thereof.
Claim 11
Dependent Claim
76 words
Fastener driving apparatus as defined in claim 5 including means within said housing defining an exhaust chamber between said pressure chamber and said drive track means for receiving said cylinder when said pistonhead means is disposed in said second position, said valve means being operable to communicate said pressure chamber with said exhaust chamber and said drive track means communicating therewith during the movement of said pistonhead means from said second position to said first position.
Claim 12
Dependent Claim
124 words
Fastener driving apparatus as defined in claim 5 wherein said valve means is operable to communicate said pressure chamber with the atmosphere during the movement of said pistonhead means from said second position to said first position, means defining a return chamber communicating with said cylindrical surface and the opposite side of said pistonhead means with an effective area substantially less than the effective area of said one side of said pistonhead means communicating with said pressure chamber, and means for communicating fluid under pressure from said reservoir to said return chamber for effecting movement of said pistonhead means from said second position to said first position in response to the operation of said valve means to communicate said pressure chamber with the atmosphere.
Claim 13
Dependent Claim
81 words
Fastener driving apparatus as defined in claim 9 wherein said last-mentioned means comprises a valve operatively connected between said return chamber and said reservoir means for maintaining a fluid pressure within said return chamber when said pistonhead means is in said first position which is not in excess of substantially less than said reservoir fluid pressure so that said substantially lesser fluid pressure will be compressed during the movement of said pistonhead means from said first position to said second position.
Claim 14
Dependent Claim
133 words
Fastener driving apparatus as defined in claim 5 wherein said fastener driving member is circular in cross-sectional configuration, closure means movable with said cylinder and extending inwardly therefrom and slidably sealingly engaging the exterior periphery of said fastener driving member, the interior periphery of said cylinder and the exterior periphery of said fastener driving member extending between said driving piston and said closure means defining a pressure tight chamber which is expansible in response to the movement of said pistonhead means from said first position onto said second position with said fastener driving member in said fastener receiving position to thereby establish in said pressure tight chamber a negative fluid pressure when said pistonhead means is disposed in said second position and said fastener driving member is disposed in said fastener receiving position.
Claim 15
Dependent Claim
75 words
Fastener driving apparatus as defined in claim 5 wherein said fastener driving member includes a generally semispherical driving end and wherein said retaining and releasing means comprises a cylindrical latch member mounted for transverse movement between latching and releasing positions, said latch member in said latching position being disposed with its axis spaced transversely from the axis of the semispherical driving end of said fastener driving member between the latter and said drive track means.
Claim 16
Dependent Claim
198 words
Fastener driving apparatus as defined in claim 12 wherein the driving end of said fastener driving member is mounted for limited transverse movement when said fastener driving member is disposed in said fastener receiving position from a latched position wheRein its axis is disposed in said spaced transverse relation from the axis of said latch member so as to bias said latch member for transverse movement in one direction and a latch releasing position wherein the axis of said fastener driving member is disposed in transversely spaced relation from the axis of said latch member so as to bias said latch member transversely in the opposite direction, stop means for limiting the transverse movement of said latch member in said one direction when said latch member is disposed in said latching position, resilient means permitting yielding transverse movement of said latch member in said opposite direction out of said latching position toward said releasing position and means operable in response to the movement of said pistonhead means into a predetermined position to said second position for effecting a transverse movement of the driving end of said fastener driving member from said latched position to said latch releasing position.
Claim 17
Dependent Claim
81 words
Fastener driving apparatus as defined in claim 13 wherein said last-mentioned means comprises cam roller means carried by said housing in a position to be engaged by said driving chamber defining means when its piston head means is moved into said predetermined position so that said driving chamber and the fastener driving element associated therewith will be tilted to effect the transverse movement of the driving end of said fastener driving element from said latched position to said latch releasing position.
Claim 18
Dependent Claim
37 words
Fastener driving apparatus as defined in claim 14 wherein said cam roller means includes a cam roller and means for mounting said cam roller in said housing in any one of a plurality of longitudinally spaced positions.
Claim 19
Dependent Claim
130 words
Fastener driving apparatus as defined in claim 5 including first check valve means carried by said pistonhead means for permitting flow of fluid under pressure from said reservoir means into said driving chamber when said pistonhead means is disposed in said first position and for preventing flow of fluid under pressure outwardly of said driving chamber when said pistonhead means is disposed out of said first position and cooperating second check valve means carried by said housing for communicating fluid under pressure from said reservoir means to said first check valve means when said pistonhead means is disposed in said first position and for preventing flow therethrough from said reservoir means to said pressure chamber during the movement of said pistonhead means from said second position into said first position.
Claim 20
Dependent Claim
255 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, means within said housing defining a driving chamber including a cylinder, a driving piston reciprocably mounted within said cylinder, a fastener driving member operatively connected with said driving piston for movement therewith in a driving stroke from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and in a return stroke from said fastener driven position into said fastener receiving position, means operable by fluid under pressure from said reservoir means for establishing a positive driving fluid pressure and a negative driving fluid pressure within said driving chamber acting on said driving piston with said fastener driving member in said fastener receiving position in a direction to move said fastener driving member through said driving stroke, and means for retaining said fastener driving member in said fastener receiving position during the establishment of said positive and negative driving fluid pressures and for releasing the same after the establishment of said positive and negative driving Pressures to thereby permit the movement of said driving piston under the action of said positive and negative driving pressures and hence the movement of said fastener driving means through said driving stroke.
Claim 21
Dependent Claim
255 words
Fastener driving apparatus comprising means defining a housing, reservoir means within said housing for receiving and containing fluid under pressure supplied thereto from a source of fluid under pressure, drive track means carried by said housing for receiving successive fasteners to be driven from a supply of such fasteners fed thereto, means within said housing defining a driving chamber including a cylinder, a driving piston reciprocably mounted within said cylinder, a fastener driving member operatively connected with said driving piston for movement therewith in a driving stroke from a fastener receiving position through said drive track means into a fastener driven position to drive a fastener in said drive track means into a workpiece and in a return stroke from said fastener driven position into said fastener receiving position, means operable by fluid under pressure from said reservoir means for establishing a positive driving fluid pressure and a negative driving fluid pressure within said driving chamber acting on said driving piston with said fastener driving member in said fastener receiving position in a direction to move said fastener driving member through said driving stroke, and means for retaining said fastener driving member in said fastener receiving position during the establishment of said positive and negative driving fluid pressures and for releasing the same after the establishment of said positive and negative driving Pressures to thereby permit the movement of said driving piston under the action of said positive and negative driving pressures and hence the movement of said fastener driving means through said driving stroke.
Claim 22
Dependent Claim
219 words
Fastener driving apparatus as defined in claim 17 wherein said positive and negative pressure establishing means comprises pistonhead means of an exterior diameter size greater than the exterior diameter size of said driving piston operatively connected with said cylinder, means defining with one side of said pistonhead means a pressure chamber including a cylindrical surface receiving said pistonhead means for longitudinal sliding movement therein between first and second positions, closure means movable with said cylinder and extending inwardly therefrom and slidably sealingly engaging the exterior periphery of said fastener driving member, the interior periphery of said cylinder and the exterior periphery of said fastener driving member extending between said driving piston and said closure means defining a pressure tight chamber which is expansible in response to the movement of said pistonhead means from said first position to said second position with said fastener driving member in said fastener receiving position to thereby establish in said pressure tight chamber a negative fluid pressure when said pistonhead means is disposed in said second position and said fastener driving member is disposed in said fastener receiving position, and valve means carried by said housing operable to communicate said pressure chamber with the fluid under pressure within said reservoir means to move said pistonhead means from said first position to said second position.
Claim 23
Dependent Claim
75 words
Fastener driving apparatus as defined in claim 18 wherein said fastener driving member includes a generally semispherical driving end and wherein said retaining and releasing means comprises a cylindrical latch member mounted for transverse movement between latching and releasing positions, said latch member in said latching position being disposed with its axis spaced transversely from the axis of the semispherical driving end of said fastener driving member between the latter and said drive track means.
Claim 24
Dependent Claim
206 words
A fastener driving apparatus as defined in claim 19 wherein the driving end of said fastener driving member is mounted for limited transverse movement when said fastener driving member is disposed in said fastener receiving position from a latched position wherein its axis is disposed in said spaced transverse relation from the axis of said latch member so as to bias said latch member for transverse movement in one direction and a latch releasing position wherein the axis of said fastener driving member is disposed in transversely spaced relation from the axis of said latch member so as to bias said latch member transversely in the opposite direction, stop means for limiting the transverse movement of said latch member in said one direction when said latch member is disposed in said latching position, resilient means permitting yielding transverse movement of said latch member in said opposite direction out of said latching position toward said releasing position and means operable in response to the movement of said pistonhead means into a predetermined position during its movement from said first position to said second position for effecting a transverse movement of the driving end of said fastener driving member from said latched position to said latch releasing position.
Claim 25
Dependent Claim
306 words
In a fastener driving apparatus of the type including a housing, fluid pressure operated fastener driving means carried by said housing for movement through a fastener driving stroke and a return stroke, valve means carried by said housing for movement from a normally inoperative position into an operative position for effecting the operation of said fluid pressure operated means through said fastener driving stroke, a work contacting member carried by said housing for movement, from an inoperative positiOn to an operative position in response to the movement of said apparatus into cooperating engagement with a workpiece, a trigger member carried by said housing for manual movement from an inoperative position to an operative position, and interlock means for effecting movement of said valve means into the operative position thereof in response (1) to the simultaneous movement of said work contacting and said trigger members into their operative positions, (2) to the movement of said work contacting member into its operative position when said trigger member is in its operative position or (3) to the movement of said trigger member into its operative position when said work contacting member is in its operative position, the improvement which comprises said interlock means including an elongated interlock member having a transversely extending slot formed in the central portion thereof, a pivot pin carried by said housing disposed within said slot, means connecting one end of said interlock member with said work contacting member for movement thereby in response to the movement of said work contacting member from said inoperative position to said operative position, means for connecting the other end of said interlock member with said trigger for movement in response to the movement of said trigger member from said inoperative position to said operative position, said interlock member including a valve means engaging portion intermediate the ends thereof.
Claim 26
Dependent Claim
306 words
In a fastener driving apparatus of the type including a housing, fluid pressure operated fastener driving means carried by said housing for movement through a fastener driving stroke and a return stroke, valve means carried by said housing for movement from a normally inoperative position into an operative position for effecting the operation of said fluid pressure operated means through said fastener driving stroke, a work contacting member carried by said housing for movement, from an inoperative positiOn to an operative position in response to the movement of said apparatus into cooperating engagement with a workpiece, a trigger member carried by said housing for manual movement from an inoperative position to an operative position, and interlock means for effecting movement of said valve means into the operative position thereof in response (1) to the simultaneous movement of said work contacting and said trigger members into their operative positions, (2) to the movement of said work contacting member into its operative position when said trigger member is in its operative position or (3) to the movement of said trigger member into its operative position when said work contacting member is in its operative position, the improvement which comprises said interlock means including an elongated interlock member having a transversely extending slot formed in the central portion thereof, a pivot pin carried by said housing disposed within said slot, means connecting one end of said interlock member with said work contacting member for movement thereby in response to the movement of said work contacting member from said inoperative position to said operative position, means for connecting the other end of said interlock member with said trigger for movement in response to the movement of said trigger member from said inoperative position to said operative position, said interlock member including a valve means engaging portion intermediate the ends thereof.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-01 | 1974-08-31 | 1975-03-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-01 | 1978-08-31 | 1979-03-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-01 | 1982-08-31 | 1983-03-02 | $7700.00 | Window Closed / Lapsed |