Patent US3173305A successfully refreshed from Google Patents.
US3173305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hand brake mechanism
Assignee: Faiveley Transport North America Inc
•
Filing: 1962-10-05
•
Granted: 1965-03-16
•
Expires: 1982-10-05
Abstract
No abstract record available.
Inventors
- 👤 Everard C Mersereau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:04
CPC Classifications
B; B61; B61H; B61H13/00; B61H13/02; B61H13/04; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20396; Y10T74/20474; Y10T74/2048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN A HAND BRAKE MECHANISM, THE COMBINATION WITH A ROTARY CHAIN WINDING DRUM AND A MAIN GEAR WHEEL OF: A ROTATABLE SHAFT, FIRST CLUTCH MEANS COMPRISING A COLLAR MOUNTED ON SAID SHAFT, SAID COLLAR HAVING A FLANGE EXTENDING RADIALLY THEREFROM, SAID COLLAR BEING FREELY ROTATABLE ABOUT SAID SHAFT, AND HAVING AN AXIALY EXTENDING THREADED HUB, AN INTERNALLY THREADED DRIVING MEMBER CO-AXIAL MOUNTED ON SAID THREADED HUB AND ENGAGEABLE WITH SAID GEAR WHEEL, SAID DRIVING MEMBER BEING AXIALLY MOVEABLE RELATIVE TO SAID COLLAR, AND A DETENT MEANS CO-AXIALLY MOUNTED ON SAID HUB INTERMEDIATE SAID DRIVING MEMBER AND SAID FLANGE, SAID DETENT MEANS BEING CLAMPED BETWEEN SAID DRIVING MEMBER AND SAID FLANGE UPON RELATIVE ROTATION OF SAID COLLAR AND SAID DRIVING MEMBER IN A PREDETERMINED DIRECTION, MEANS CO-OPERATING WITH SAID DETENT MEANS FOR PREVENTING REVERSE ROTATION THEREOFF AND A SECOND CLUTCH MEANS CO-AXIALLY MOUNTED ON SAID ROTATABLE SHAFT AND ROTATABLE THEREWITH AND SLIDABLE THEREON, SAID CLUTCH MEANS BEING ENGAGEABLE WITH SAID COLLAR FOR PREVENTING FREE ROTATION OF SAID COLLAR ABOUT SAID SHAFT, SAID FIRST AND SECOND CLUTCH MEANS ALLOWING THE BRAKE MECHANISM TO BE RELEASED EITHER QUICKLY OR GRADUALLY.
Claim 2
Dependent Claim
187 words
IN A HAND BRAKE MECHANISM, THE COMBINATION WITH A ROTARY CHAIN WINDING DRUM AND A MAIN GEAR WHEEL OF: A ROTATABLE SHAFT, FIRST CLUTCH MEANS COMPRISING A COLLAR MOUNTED ON SAID SHAFT, SAID COLLAR HAVING A FLANGE EXTENDING RADIALLY THEREFROM, SAID COLLAR BEING FREELY ROTATABLE ABOUT SAID SHAFT, AND HAVING AN AXIALY EXTENDING THREADED HUB, AN INTERNALLY THREADED DRIVING MEMBER CO-AXIAL MOUNTED ON SAID THREADED HUB AND ENGAGEABLE WITH SAID GEAR WHEEL, SAID DRIVING MEMBER BEING AXIALLY MOVEABLE RELATIVE TO SAID COLLAR, AND A DETENT MEANS CO-AXIALLY MOUNTED ON SAID HUB INTERMEDIATE SAID DRIVING MEMBER AND SAID FLANGE, SAID DETENT MEANS BEING CLAMPED BETWEEN SAID DRIVING MEMBER AND SAID FLANGE UPON RELATIVE ROTATION OF SAID COLLAR AND SAID DRIVING MEMBER IN A PREDETERMINED DIRECTION, MEANS CO-OPERATING WITH SAID DETENT MEANS FOR PREVENTING REVERSE ROTATION THEREOFF AND A SECOND CLUTCH MEANS CO-AXIALLY MOUNTED ON SAID ROTATABLE SHAFT AND ROTATABLE THEREWITH AND SLIDABLE THEREON, SAID CLUTCH MEANS BEING ENGAGEABLE WITH SAID COLLAR FOR PREVENTING FREE ROTATION OF SAID COLLAR ABOUT SAID SHAFT, SAID FIRST AND SECOND CLUTCH MEANS ALLOWING THE BRAKE MECHANISM TO BE RELEASED EITHER QUICKLY OR GRADUALLY.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |