US3177983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic slack adjuster for brakes
Assignee: MCGREGOR Manufacturing CO
•
Filing: 1963-02-25
•
Granted: 1965-04-13
•
Expires: 1983-02-25
Abstract
No abstract record available.
Inventors
- 👤 Donald T Mcgregor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 02:09
CPC Classifications
F; F16; F16D; F16D65/00; F16D65/38; F16D65/40; F16D65/52; F16D65/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
182 words
THE COMBINATION WITH A BRAKE OPERATING MECHANISM HAVING A BRAKE ACTUATING SHAFT, AN OSCILLATABLE LEVER AND RECIPROCABLE ROD FOR OSCILLATING SAID SHAFT, WHEREIN THE LEVER INCLUDES A HOUSING CONTAINING A WORM GEAR FOR ADJUSTING THE BRAKE ACTUATING SHAFT TO TAKE UP SLACK DUE TO WEAR OF THE BRAKES, AND A WORM FOR ADVANCING THE WORM GEAR, OF AN AUTOMATIC SLACK ADJUSTER FOR TURNING SAID WORM, COMPRISING: (A) A SINGLE SHAFT EXTENDING THROUGH SAID WORM AND HAVING AN INTEGRAL RATCHET FLANGE AT ONE END; (B) A RATCHET BODY DISPOSED OUTWARDLY OF SAID RATCHET FLANGE AND HAVING A RATCHET COACTING WITH SAID FLANGE; (C) THE CONFRONTING ENDS OF SAID SHAFT AND RATCHET BODY HAVING ALIGNED SOCKETS; (D) A PIN EXTENDING FROM SAID SHAFT INTO SAID SOCKETS; (E) YIELDABLE MEANS INTERPOSED BETWEEN THE EXTENDED END OF SAID PIN AND A PORTION OF SAID RATCHET BODY ADJACENT SAID RATCHET FLANGE TO URGE SAID RATCHET INTO ENGAGEMENT WITH SAID RATCHET FLANGE; (F) AND MEANS INTERCONNECTING SAID RATCHET HOUSING AND BRAKE OPERATING MECHANISM TO EFFECT OSCILLATION OF SAID RATCHET BODY THEREBY TO ADVANCE SAID WORM SHAFT AND WORM.
Claim 2
Dependent Claim
182 words
THE COMBINATION WITH A BRAKE OPERATING MECHANISM HAVING A BRAKE ACTUATING SHAFT, AN OSCILLATABLE LEVER AND RECIPROCABLE ROD FOR OSCILLATING SAID SHAFT, WHEREIN THE LEVER INCLUDES A HOUSING CONTAINING A WORM GEAR FOR ADJUSTING THE BRAKE ACTUATING SHAFT TO TAKE UP SLACK DUE TO WEAR OF THE BRAKES, AND A WORM FOR ADVANCING THE WORM GEAR, OF AN AUTOMATIC SLACK ADJUSTER FOR TURNING SAID WORM, COMPRISING: (A) A SINGLE SHAFT EXTENDING THROUGH SAID WORM AND HAVING AN INTEGRAL RATCHET FLANGE AT ONE END; (B) A RATCHET BODY DISPOSED OUTWARDLY OF SAID RATCHET FLANGE AND HAVING A RATCHET COACTING WITH SAID FLANGE; (C) THE CONFRONTING ENDS OF SAID SHAFT AND RATCHET BODY HAVING ALIGNED SOCKETS; (D) A PIN EXTENDING FROM SAID SHAFT INTO SAID SOCKETS; (E) YIELDABLE MEANS INTERPOSED BETWEEN THE EXTENDED END OF SAID PIN AND A PORTION OF SAID RATCHET BODY ADJACENT SAID RATCHET FLANGE TO URGE SAID RATCHET INTO ENGAGEMENT WITH SAID RATCHET FLANGE; (F) AND MEANS INTERCONNECTING SAID RATCHET HOUSING AND BRAKE OPERATING MECHANISM TO EFFECT OSCILLATION OF SAID RATCHET BODY THEREBY TO ADVANCE SAID WORM SHAFT AND WORM.
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) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |