US3707893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical speed ratchet
Assignee: Individual
•
Filing: 1970-10-20
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Granted: 1973-01-02
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Expires: 1990-10-20
Abstract
Abstract An elongated lever bar having a head on one end mounted for rotation about a first axis transverse to the centerline of the bar and a handle sleeve rotatably mounted on the other end of the bar for rotation relative thereto about the center axis of the bar. The deactivatable driving structure is provided and drivingly couples the handle sleeve to the head and the head and corresponding bar end include coacting reversible ratchet structure for allowing rotation of the head in either direction and preventing rotation of the head in the other direction relative to the bar.
Inventors
- 👤 B Hofman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:57
CPC Classifications
B; B25; B25B; B25B17/00; B25B13/00; B25B13/46; B25B13/461; B25B13/467
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
164 words
An elongated lever bar including first and second ends, a head on one end of said bar mounted for rotation about a first axis transverse to said bar and a handle on the other end of said bar mounted for rotation about an axis generally parallel to said bar, deactivatable drive means drivingly connecting said handle to said head for rotation of the latter in response to rotation of the former, said head and one end of said bar including coacting means defining a reversible ratchet connection between said head and said bar, said drive means including an actuator mounted on said bar for shifting between first and second positions toward and away from said head, means establishing a rotary connection between said actuator and said shaft for rotation of the latter relative to said actuator and against axial shifting of said shaft relative to said actuator, and latch means serving to releasably retain said actuator, and thus said shaft, in said limit positions.
Claim 2
Dependent Claim
164 words
An elongated lever bar including first and second ends, a head on one end of said bar mounted for rotation about a first axis transverse to said bar and a handle on the other end of said bar mounted for rotation about an axis generally parallel to said bar, deactivatable drive means drivingly connecting said handle to said head for rotation of the latter in response to rotation of the former, said head and one end of said bar including coacting means defining a reversible ratchet connection between said head and said bar, said drive means including an actuator mounted on said bar for shifting between first and second positions toward and away from said head, means establishing a rotary connection between said actuator and said shaft for rotation of the latter relative to said actuator and against axial shifting of said shaft relative to said actuator, and latch means serving to releasably retain said actuator, and thus said shaft, in said limit positions.
Claim 3
Dependent Claim
28 words
The combination of claim 1 wherein said deactivatable drive means includes means automatically locking said handle against rotation relative to said bar when said drive means is deactivated.
Claim 4
Dependent Claim
69 words
The combination of claim 1 wherein said bar is tubular, said drive means including a drive shaft journaled through said tubular bar and axially shiftable relative thereto and gear means carried by said head and the adjacent end of said shaft and disposed in meshed engagement when said shaft is shifted toward said head and disposed out of meshed engagement when said shaft is shifted away from said head.
Claim 5
Dependent Claim
15 words
The combination of claim 3 including means yieldingly biasing said drive shaft toward said head.
Claim 6
Dependent Claim
32 words
The combination of claim 1 wherein said actuator and handle include coacting means retaining said handle against rotation relative thereto, and thus said bar, when said actuator is in said second position.
Claim 7
Dependent Claim
152 words
An elongated lever bar including first and second ends, a head on one end of said bar mounted for rotation about a first axis transverse to said bar and a handle on the other end of said bar mounted for rotation about an axis generally parallel to said bar, deactivatable drive means drivingly connecting said handle to said head for rotation of the latter in response to rotation of the former, and including a control portion shiftable longitudinally of said bar between active and inactive positions for activating and deactivating, respectively, said drive means, said head and one end of said bar including coacting means defining a reversible ratchet connection between said head and said Bar, said control portion and said bar and handle including coacting means operative to automatically lock said handle against rotation relative to said lever bar in response to said control portion being shifted to said inactive position.
Claim 8
Dependent Claim
152 words
An elongated lever bar including first and second ends, a head on one end of said bar mounted for rotation about a first axis transverse to said bar and a handle on the other end of said bar mounted for rotation about an axis generally parallel to said bar, deactivatable drive means drivingly connecting said handle to said head for rotation of the latter in response to rotation of the former, and including a control portion shiftable longitudinally of said bar between active and inactive positions for activating and deactivating, respectively, said drive means, said head and one end of said bar including coacting means defining a reversible ratchet connection between said head and said Bar, said control portion and said bar and handle including coacting means operative to automatically lock said handle against rotation relative to said lever bar in response to said control portion being shifted to said inactive position.
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) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |