US3801009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Applicator gun for applying hardenable plastic compositions containing fibers
Assignee: Individual
•
Filing: 1973-05-29
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Granted: 1974-04-02
•
Expires: 1993-05-29
Abstract
Abstract An applicator gun which is used for spray application of hardenable plastic compositions, comprising a resin and a catalyst, and reinforcing fibers. The gun includes a body having an enclosed mixing chamber. Separate resin and catalyst valves connected with the body selectively connect the mixing chamber at one of its ends to external sources of resin and catalyst under pressure. Motion of a finger operated trigger towards the body, with which it is pivotally connected, operates the resin and catalyst valves to deliver resin and catalyst into the mixing chamber where they mix in the absence of air. The mixed resin and catalyst pass through an outlet nozzle at the opposite end of the mixing chamber and exit as a substantially non-atomized liquid jet. An air operated fiberglass chopper connected with the body directs an airborne jet of chopped fiberglass strands into the jet of mixed resin and catalyst externally of the outlet nozzle when it is supplied with air under pressure. An air valve, connected with an external supply of air under pressure, is operated by the trigger during motion relatively toward the body to supply air to the fiberglass chopper so that mixed resin and catalyst together with the entrained chopped fiberglass are applied in a liquid stream.
Inventors
- 👤 J Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:07
CPC Classifications
B; B05; B05B; B05B1/00; B05B1/30; B05B1/3033; B05B1/304; B05B1/3046; B05B1/3066; B05B15/00; B05B15/50; B05B15/55; B05B7/00; B05B7/02; B05B7/12; B05B7/1209; B05B7/14; B05B7/1481; B05B7/149; B05B7/1495; B29; B29B; B29B7/00; B29B7/74; B29B7/7438
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
369 words
An applicator gun for applying mixed resin, catalyst and reinforcing fibers utilizing separate external sources of air, resin and catalyst under pressure and a supply of fibers, the gun comprising: a body; a mixing chamber within said body extending in axial and radial directions, said mixing chamber having axially spaced opposite ends; an internal nozzle projecting axially into said mixing chamber from one of said ends generally centrally thereof; catalyst valve means connected to said body for selectively connecting said nozzle with the external supply of catalyst under pressure to direct catalyst into said mixing chamber in an axial stream generally centrally thereof; resin valve means connected to said body for selectively delivering resin from the external source of resin under pressure; passage means in said body connecting said resin valve means with said mixing chamber adjacent said one end thereof for directing resin into the mixing chamber in a radially inward direction at a location upstream of the outlet from said internal nozzle whereby the resin forms an enveloping flow about the stream of catalyst issuing from said internal nozzle; a trigger movable connected to said body for selective motion relatively toward and away from adjacent portions of said body, said trigger during motion relatively toward said body operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein in the absence of air; an outlet nozzle connected to said body in communication with said mixing chamber at the opposite end thereof from said one end for directing mixed catalyst and resin outwardly of said mixing chamber as a substantially non-atomized liquid jet; fiber supply means connected to said body and with the supply of fibers for directing an airborne jet of fibers into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber-supply means is supplied with air under pressure; and air valve means connected to said body for selectively connecting said fiber supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof relatively toward said body to supply air under pressure to said fiber supply means to actuate the same.
Claim 2
Dependent Claim
369 words
An applicator gun for applying mixed resin, catalyst and reinforcing fibers utilizing separate external sources of air, resin and catalyst under pressure and a supply of fibers, the gun comprising: a body; a mixing chamber within said body extending in axial and radial directions, said mixing chamber having axially spaced opposite ends; an internal nozzle projecting axially into said mixing chamber from one of said ends generally centrally thereof; catalyst valve means connected to said body for selectively connecting said nozzle with the external supply of catalyst under pressure to direct catalyst into said mixing chamber in an axial stream generally centrally thereof; resin valve means connected to said body for selectively delivering resin from the external source of resin under pressure; passage means in said body connecting said resin valve means with said mixing chamber adjacent said one end thereof for directing resin into the mixing chamber in a radially inward direction at a location upstream of the outlet from said internal nozzle whereby the resin forms an enveloping flow about the stream of catalyst issuing from said internal nozzle; a trigger movable connected to said body for selective motion relatively toward and away from adjacent portions of said body, said trigger during motion relatively toward said body operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein in the absence of air; an outlet nozzle connected to said body in communication with said mixing chamber at the opposite end thereof from said one end for directing mixed catalyst and resin outwardly of said mixing chamber as a substantially non-atomized liquid jet; fiber supply means connected to said body and with the supply of fibers for directing an airborne jet of fibers into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber-supply means is supplied with air under pressure; and air valve means connected to said body for selectively connecting said fiber supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof relatively toward said body to supply air under pressure to said fiber supply means to actuate the same.
Claim 3
Dependent Claim
295 words
An applicator gun for applying mixed resin, catalyst and reinforcing fibers utilizing separate external sources of air resin and catalyst under pressure and a supply of fibers, the gun comprising: a body; a mixing chamber within said body extending in axial and radial directions, said mixing chamber having axially spaced opposite ends; resin valve means connected with said body for selectively connecting said mixing chamber adjacent one of said ends thereof with the external source of resin under pressure; catalyst valve means connected with said body for selectively connecting said mixing chamber adjacent said one end thereof with the external supply of catalyst under pressure; a trigger movably connected with said body for selective motion relatively toward and away from adjacent portions of said body, said trigger during motion relatively toward said body operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein substantially in the absence of air; an outlet nozzle connected with said body in communication with said mixing chamber at the opposite end thereof from said one end for directing mixed catalyst and resin outwardly of said mixing chamber as a substantially non-atomized liquid jet; fiber supply means connected with said body and with the supply of fibers for directing an airborne jet of fibers into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber supply means is supplied with air under pressure; and air valve means connected with said body for selectively connecting said fibers supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof relatively toward said body to supply air under pressure to said fiber supply means to actuate the same.
Claim 4
Dependent Claim
295 words
An applicator gun for applying mixed resin, catalyst and reinforcing fibers utilizing separate external sources of air resin and catalyst under pressure and a supply of fibers, the gun comprising: a body; a mixing chamber within said body extending in axial and radial directions, said mixing chamber having axially spaced opposite ends; resin valve means connected with said body for selectively connecting said mixing chamber adjacent one of said ends thereof with the external source of resin under pressure; catalyst valve means connected with said body for selectively connecting said mixing chamber adjacent said one end thereof with the external supply of catalyst under pressure; a trigger movably connected with said body for selective motion relatively toward and away from adjacent portions of said body, said trigger during motion relatively toward said body operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein substantially in the absence of air; an outlet nozzle connected with said body in communication with said mixing chamber at the opposite end thereof from said one end for directing mixed catalyst and resin outwardly of said mixing chamber as a substantially non-atomized liquid jet; fiber supply means connected with said body and with the supply of fibers for directing an airborne jet of fibers into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber supply means is supplied with air under pressure; and air valve means connected with said body for selectively connecting said fibers supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof relatively toward said body to supply air under pressure to said fiber supply means to actuate the same.
Claim 5
Dependent Claim
165 words
An applicator gun as defined in claim 2, wherein said trigger moves along a predetermined path during motion toward and away from said body, each of said air, resin, and catalyst valve means having separately associated therewith: a valve actuator projecting into said predetermined path and movable therealong between a extended position in which the associated one of said valve means is closed to prevent flow therethrough and a depressed position in which the associated one of said valve means is open to enable flow therethrough; and biasing means connected with each said valve actuator for urging the same for the depressed position to the extended position; said trigger contacting said separate valve actuators associated with said air, resin and catalysT means during motion of said trigger towards said body to move said valve actuators from the extended position to the depressed position thereby causing flow of resin and catalyst under pressure to said mixing chamber and flow of air to said fiber supply means.
Claim 6
Dependent Claim
75 words
An applicator gun as defined in claim 3, further including: means for variably preselecting the ones of said valve actuators to be contacted by said trigger during motion thereof along said predetermined path to thereby enable said air, resin and catalyst valve means to be selectively operated in different combinations to spray each of the following combinations separately: air and fibers alone; air and fibers and resin and catalyst; and resin and catalyst without air.
Claim 7
Dependent Claim
218 words
An applicator gun as defined in claim 3, wherein each of said resin and catalyst valve means comprises: a tubular valve mounted for axial sliding motion in and relative to said body; having, an axial valve passage therethorough; an inlet port in said body connected with the associated one of the external sources of resin and catalyst, said inlet port receiving one end of said valve in sliding sealing relation with the external peripheral surfaces thereof, flow being continuously permitted between said inlet port and said valve passage; an internal chamber in said body surrounding said valve adjacent the opposite end thereof, said internal chamber communicating with said mixing chamber adjacent said one end thereof; and a valve seat connected with said body within said internal chamber, said valve reciprocable axially between a closed position in which said opposite end of said valve sealingly abuts said valve seat to prevent flow between said valve passage and said internal chamber and an open position in which said opposite end of said valve is spaced away from said valve seat to enable flow between said valve passage and said internal chamber, the associated one of said valve actuators being connected with said valve to reciprocate said valve between said closed and open positions in response to movement of said trigger.
Claim 8
Dependent Claim
149 words
An applicator gun as defined in claim 3, further including: an internal nozzle projecting axially into said mixing chamber from said one end generally centrally thereof, said internal nozzle being connected with said catalyst valve means to direct catalyst into said mixing chamber in an axial stream generally centrally thereof; passage means in said body connecting said resin valve means with said mixing chamber adjacent said one end thereof for directing resin into the mixing chamber in a radially inward direction at a location upstream of the outlet from said inner nozzle whereby the resin forms an enveloping flow about the stream of catalyst issuing from said internal nozzle; and a series of perforated, radially extending, axially spaced baffles positioned downstream of said internal nozzle, said baffles causing turbulent agitation of said resin and catalyst to effect thorough mixing thereof before said resin and catalyst reach said outlet nozzle.
Claim 9
Dependent Claim
321 words
An applicator gun for applying mixed resin, catalyst and reinforcing fiber utilizing separate external sources of air, resin and catalyst under pressure and a supply of fibers, the gun comprising: a body, said body including, a handle adapted to be grasped by hand; a mixing chamber extending in an axial direction and radial directions within said body and having radially extending end surfaces at opposite axial ends of said chamber; resin valve means connected to said body for selectively connecting said mixing chamber adjacent one of said ends thereof with the external supply of resin under pressure; catalyst valve means connected to said body for selectively connecting said mixing chamber adjacent said one end thereof with the external supply of catalyst under pressure; a trigger connected to said body adapted to be grasped by the fingers of a human hanD gripping said handle for selective pivoting motion of said trigger relatively toward and away from said handle, said trigger during motion toward said handle operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein substantially in the absence of air; an outlet nozzle connected to said body in communication with said mixing chamber at the opposite end thereof for directing mixed resin and catalyst outwardly of said mixing chamber as a substantially non-atomized, liquid jet; fiber supply means connected to said body and the supply of fibers for directing an airborne jet of fibers strands into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber supply means is supplied with air under pressure; and air valve means connected to said body for selectively connecting said fiber supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof towards said handle to supply air under pressure to said fiber supply means to actuate the same.
Claim 10
Dependent Claim
321 words
An applicator gun for applying mixed resin, catalyst and reinforcing fiber utilizing separate external sources of air, resin and catalyst under pressure and a supply of fibers, the gun comprising: a body, said body including, a handle adapted to be grasped by hand; a mixing chamber extending in an axial direction and radial directions within said body and having radially extending end surfaces at opposite axial ends of said chamber; resin valve means connected to said body for selectively connecting said mixing chamber adjacent one of said ends thereof with the external supply of resin under pressure; catalyst valve means connected to said body for selectively connecting said mixing chamber adjacent said one end thereof with the external supply of catalyst under pressure; a trigger connected to said body adapted to be grasped by the fingers of a human hanD gripping said handle for selective pivoting motion of said trigger relatively toward and away from said handle, said trigger during motion toward said handle operating said resin and catalyst valve means to deliver resin and catalyst, respectively, into said mixing chamber for mixing therein substantially in the absence of air; an outlet nozzle connected to said body in communication with said mixing chamber at the opposite end thereof for directing mixed resin and catalyst outwardly of said mixing chamber as a substantially non-atomized, liquid jet; fiber supply means connected to said body and the supply of fibers for directing an airborne jet of fibers strands into said jet of mixed resin and catalyst externally of said outlet nozzle when said fiber supply means is supplied with air under pressure; and air valve means connected to said body for selectively connecting said fiber supply means with the external supply of air under pressure, said air valve means being operated by said trigger during motion thereof towards said handle to supply air under pressure to said fiber supply means to actuate the same.
Claim 11
Dependent Claim
160 words
An applicator gun as defined in claim 7, further including: an internal nozzle projecting axially into said mixing chamber from said one end generally centrally thereof, said internal nozzle being connected with one of said resin and catalyst valve means for directing an axial liquid flow into said mixing chamber generally centrally thereof; passage means connecting the other of said resin and catalyst valve means with said mixing chamber adjacent said one end for introducing a radially directed liquid flow into said chamber in region upstream of the outlet from said internal nozzle whereby said resin and catalyst are introduced as concentric outer and inner flows, respectively; and a plurality of axially spaced, radially extending perforated baffles connected with said body positioned between said internal nozzle and said outlet nozzle, said baffles causing sufficient turbulence in the flow of resin and catalyst through them to cause thorough mixing of the resin and catalyst prior to passage through said outlet nozzle.
Claim 12
Dependent Claim
166 words
An applicator gun as defined in claim 7, wherein said trigger moves along a predetermined path during motion of said trigger toward and away from said handle, each of said air, resin, and catalyst valve means having separately associated therewith; a valve actuator projecting into said predetermined path and movable therealong between a extended position in which the associated one of said valve means is closed to prevent flow therethrough and a depressed position in which the associated one of said valve means is open to enable flow therethrough; and biasing means connected with each said valve actuator for urging the same from the depressed position to the extended position; said trigger contacting said separate valve actuators associated with said air, resin and catalyst means during motion of said trigger toward said body to move said valve actuators from the extended position to the depressed position thereby causing resin and catalyst under pressure to said mixing chamber and flow of air to said fiber supply means.
Claim 13
Dependent Claim
132 words
An applicator gun as defined in claim 9, wherein: said valve actuators for said resin and catalyst valve means are contacted by said trigger during motion towards said handle in advance of contact with said valve actuator for said air valve means, whereby resin and catalyst may be sprayed without connection of air to said fiber supply means to actuate the same, the applicator gun further including: spacing means selectively movable between said trigger and said valve actuator for said air valve means for causing said valve actuator for said air valve means to be depressed by said trigger concurrently with said valve actuators for said resin and catalyst valve means, whereby air may be supplied to said fiber supply means to actuate the same while resin And catalyst are being sprayed.
Claim 14
Dependent Claim
105 words
An applicator gun as defined in claim 9, wherein: said valve actuators for said resin and catalyst valve means are contacted by said trigger during motion towards said handle, whereby resin and catalyst may be sprayed, the applicator gun further including: spacing means selectively movable between said trigger and said valve actuator for said air valve means for causing said valve actuator for said air valve means to be depressed by said trigger in advance of said valve actuators for said resin and catalyst valve means, whereby air may be supplied to said fiber supply means to actuate the same without spraying resin and catalyst.
Claim 15
Dependent Claim
198 words
An applicator gun as defined in claim 9, wherein: said valve actuators for said resin and catalyst valve means are contacted by said trigger during motion towards said handle in advance of contact with said valve actuator for said air valve means, whereby resin and catalyst may be sprayed without connection of air to said fiber means to actuate the same, the applicator gun further including: first spacing means selectively movable between said trigger and said valve actuator for said air valve means for causing said valve actuator for said air valve means to be depressed by said trigger concurrently with said valve actuators for said resin and catalyst valve means, whereby air may be supplied to said fiber supply means to actuate the same while resin and catalyst are being sprayed, and second spacing means selectively movable between said trigger and said valve actuator for said air valve means for causing said valve actuator for said air valve means to be depressed by said trigger in advance of said valve actuators for said resin and catalyst valve means, whereby air may be supplied to said fiber supply means to actuate the same without spraying resin and catalyst.
Claim 16
Dependent Claim
220 words
An applicator gun as defined in claim 7, wherein each of said resin and catalyst valve means comprises: a tubular valve mounted for axial sliding motion in and relative to said body said valve having, an axial valve passage therethrough, an inlet port in said body connected with the associated one of the external sources of resin and catalyst, said inlet port receiving one end of said valve in sliding sealing relation with the external peripheral surfaces thereof, flow being continuously permitted between said inlet port and said valve passage; an internal chamber in said body surrounding said valve adjacent the opposite end thereof, said internal chamber communicating with said mixing chamber adjacent said one end thereof; and a valve seat connected with said body within said internal chamber, said valve reciprocable axially between the extended position in which said opposite end of said valve sealingly abuts said valve seat to prevent flow between said valve passage and said internal chamber and the depressed position in which said opposite end of said valve is spaced away from said valve seat to enable flow between said valve passage and said internal chamber, the associated one of said valve actuators being connected with said valve to reciprocate said valve between said extended and depressed positions in response to movement of said trigger.
Claim 17
Dependent Claim
95 words
An applicator gun as defined in claim 7, adapted for additional connection to an external source of cleaning solvent under pressure, such as acetone, the gun further including: solvent valve means connected with said mixing chamber and with the external supply of solvent under pressure; and an actuator connected with said body selectively operable independently of said trigger to open and close said solvent valve means whereby solvent may be selectively directed through said mixing chamber at the conclusion of operation to flush out mixed resin and catalyst within said mixing chamber and outlet nozzle.
Claim 18
Independent Claim
180 words
A method of applying mixed resin, catalyst and reinforcing fibers utilizing separate exTernal sources of air, resin and catalyst under pressure and a supply of fibers, the method comprising the steps of: connecting a hand held gun to the external sources of resin and catalyst under pressure, selectively and concurrently delivering air free resin and air free catalyst under pressure to an axially extending enclosed mixing chamber within the gun, introducing the resin and catalyst into the mixing chamber adjacent one of its ends as concentric outer and inner liquid streams respectively, directing the resin and catalyst through the mixing chamber towards the other of its ends along a tortuous path in which the resin and catalyst streams are subjected to sufficient turbulence to cause them to become thoroughly mixed in the absence of air, directing the mixed resin and catalyst out through a nozzle at the outer end of the chamber as a substantially non-atomized liquid jet, and directing an airborne jet of fibers into the liquid jet of resin and catalyst to mix therewith externally of the nozzle.
Claim 19
Independent Claim
180 words
A method of applying mixed resin, catalyst and reinforcing fibers utilizing separate exTernal sources of air, resin and catalyst under pressure and a supply of fibers, the method comprising the steps of: connecting a hand held gun to the external sources of resin and catalyst under pressure, selectively and concurrently delivering air free resin and air free catalyst under pressure to an axially extending enclosed mixing chamber within the gun, introducing the resin and catalyst into the mixing chamber adjacent one of its ends as concentric outer and inner liquid streams respectively, directing the resin and catalyst through the mixing chamber towards the other of its ends along a tortuous path in which the resin and catalyst streams are subjected to sufficient turbulence to cause them to become thoroughly mixed in the absence of air, directing the mixed resin and catalyst out through a nozzle at the outer end of the chamber as a substantially non-atomized liquid jet, and directing an airborne jet of fibers into the liquid jet of resin and catalyst to mix therewith externally of the nozzle.
Claim 20
Dependent Claim
72 words
A method as defined in claim 15, further including: utilizing a trigger on the gun which is squeezed by hand to control the flow of resin and catalyst and the airborne jet; and selectively varying the combination of flows that occurs whenever the trigger is squeezed to enable spraying of each of the following combinations separately: resin, catalyst and the airborne jet, or resin and catalyst alone, or the airborne jet alone.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |