US3557911A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Band brakes
Assignee: Whitnash PLC
•
Filing: 1968-11-22
•
Granted: 1971-01-26
•
Expires: 1988-11-22
Abstract
Abstract In a band brake comprising a brake band having a fixed anchorage at one end and brake actuating means acting on the other hand, the actuating means acts on the band through means exerting a reaction, corresponding to the applying load, on the fixed anchorage, which reaction acts in opposition to the torque load applied to the anchorage by the brake band so as to reduce the resultant load on the anchorage.
Inventors
- 👤 Keith Ellard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:34
CPC Classifications
F; F16; F16D; F16D49/00; F16D49/08; F16D49/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
178 words
A band brake comprising a drum, a brake band disposed around said drum to engage and grip said drum, fixed anchor pin means disposed adjacent one side of said drum, end member means fixedly secured to said pin means and connected to one end of said brake band, brake actuating means operatively connected to the opposite end of brake band for applying said brake band to said drum, lever means having one end pivotally mounted on said pin means, push rod means disposed between the opposite end of said lever means and said brake actuating means to apply thrust exerted by said brake actuating means to said opposite end of said lever means to cause it to rotate about said pin means, and thrust means disposed between said lever means and said opposite end of said brake band, said thrust means engaging said lever means intermediate its ends and disposed on the side thereof facing said opposite brake band end and disposed away from the side of said lever means upon which said push rod means is disposed.
Claim 2
Dependent Claim
178 words
A band brake comprising a drum, a brake band disposed around said drum to engage and grip said drum, fixed anchor pin means disposed adjacent one side of said drum, end member means fixedly secured to said pin means and connected to one end of said brake band, brake actuating means operatively connected to the opposite end of brake band for applying said brake band to said drum, lever means having one end pivotally mounted on said pin means, push rod means disposed between the opposite end of said lever means and said brake actuating means to apply thrust exerted by said brake actuating means to said opposite end of said lever means to cause it to rotate about said pin means, and thrust means disposed between said lever means and said opposite end of said brake band, said thrust means engaging said lever means intermediate its ends and disposed on the side thereof facing said opposite brake band end and disposed away from the side of said lever means upon which said push rod means is disposed.
Claim 3
Dependent Claim
44 words
A band brake according to claim 1 wherein said thrust means is a strut having rounded edges engaged in notches in said lever means and in an end member fixed to the said opposite end of said brake band remote from its anchored end.
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) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |