US4588335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quick change tool retention device for power operated mechanism
Assignee: Individual
•
Filing: 1984-09-14
•
Granted: 1986-05-13
•
Expires: 2004-09-14
Abstract
Abstract A quick change tool retention device for attachment to a power operated mechanism, such as a power operated hand drill, provided with a body portion and a release means attached to a spring-biased leg portion so that a tool, provided with a groove for interlock with the leg portion, can be brought into a keyway and locked in place until such time as the release button is depressed, thereby depressing the leg portion against the spring biasing and releasing the tool from retention via the groove.
Inventors
- 👤 Claude C. Pearson, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:33
CPC Classifications
B; B23; B23B; B23B31/00; B23B31/02; B23B31/10; B23B31/107; B23B31/1072; B23B31/10741; B23B2260/00; B23B2260/136; Y; Y10; Y10T; Y10T279/00; Y10T279/17; Y10T279/17761; Y10T279/17786; Y10T408/00; Y10T408/94; Y10T408/95
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
218 words
A quick-change tool retention device for a power-operated mechanism, said device comprising a body member provided with front and rear walls and an external peripheral wall, an interior cavity in said body member, said interior cavity having side walls perpendicular to a longitudinal axis of said body member and a bottom face, said body member further having an axial aperture extending from said front wall into said interior cavity in said body member, attachment means provided by said body member for securing said body member to said power operated mechanism, an aperture in said external peripheral wall extending into said interior cavity perpendicular to said axis of said body member, said body member further provided with an actuator member extending through said aperture in said exterior peripheral wall into said interior cavity, a spring biasing means in said interior cavity abutting the wall of the interior cavity opposing the aperture, said actuator member being associated with said spring-biasing means in said interior cavity and arranged to retain a shank end of a tool inserted through said axial aperture, said spring-biasing means being arranged to move between a first tool-retaining position and a second tool-releasing position upon pressure being applied to said actuator member, whereby a given tool may be quickly installed and removed from said tool retention device.
Claim 2
Dependent Claim
218 words
A quick-change tool retention device for a power-operated mechanism, said device comprising a body member provided with front and rear walls and an external peripheral wall, an interior cavity in said body member, said interior cavity having side walls perpendicular to a longitudinal axis of said body member and a bottom face, said body member further having an axial aperture extending from said front wall into said interior cavity in said body member, attachment means provided by said body member for securing said body member to said power operated mechanism, an aperture in said external peripheral wall extending into said interior cavity perpendicular to said axis of said body member, said body member further provided with an actuator member extending through said aperture in said exterior peripheral wall into said interior cavity, a spring biasing means in said interior cavity abutting the wall of the interior cavity opposing the aperture, said actuator member being associated with said spring-biasing means in said interior cavity and arranged to retain a shank end of a tool inserted through said axial aperture, said spring-biasing means being arranged to move between a first tool-retaining position and a second tool-releasing position upon pressure being applied to said actuator member, whereby a given tool may be quickly installed and removed from said tool retention device.
Claim 3
Dependent Claim
50 words
A quick-change tool retention device as claimed in claim 1, further wherein said actuator member includes a leg portion arranged to move within said interior cavity, said leg portion being provided with means arranged to engage means on said shank end of said tool to retain the same in place.
Claim 4
Dependent Claim
40 words
A quick-change tool retention device as claimed in claim 2, further wherein said spring biasing means comprises at least one spring means acting to bias said leg portion so that said actuator member extends radially beyond said external peripheral wall.
Claim 5
Dependent Claim
39 words
A quick-change tool retention device as claimed in claim 3, further wherein the means on said leg portion comprises a bar and the means on said shank end of said tool is a groove in said shaft end thereof.
Claim 6
Dependent Claim
27 words
A quick-change tool retention device as claimed in claim 4, further wherein said leg portion comprises a bifurcated member and said bar extends in normal relation therewith.
Claim 7
Dependent Claim
47 words
A quick-change tool retention device as claimed in claim 5, further wherein said bifurcated member has two legs and is substantially H-shaped, and said at least one spring means comprises two springs, one of said springs being provided on a lower extent of each of said legs.
Claim 8
Dependent Claim
31 words
A quick-change tool retention device as claimed in claim 1, further wherein said attachment means comprises a shaft disposed on said rear wall of said body member and extending axially therefrom.
Claim 9
Dependent Claim
39 words
A quick-change tool retention device as claimed in claim 11, further wherein said attachment means comprises an internally-threaded bore in said rear wall, the threads of which are adapted to be screwed onto complemental threads on said power-operated mechanism.
Claim 10
Dependent Claim
37 words
A quick-change tool retention device as claimed in claim 5, further wherein said actuator member comprises a button attached to a second bar and said second bar is affixed to an upper extremity of said bifurcated member.
References Cited (Backward Citations)
CA699619A
Cited
US885392A
Cited
US1833236A
Cited
US2350565A
Cited
US2885231A
Cited
US3604735A
Cited
US3576076A
Cited
US3726533A
Cited
US4057240A
Cited
US4271735A
Cited
US4402519A
Cited
US4349929A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-12 | 1989-11-11 | 1990-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-12 | 1993-11-11 | 1994-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-12 | 1997-11-11 | 1998-05-13 | $7700.00 | Window Closed / Lapsed |