US4241813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Band brake parking lever
Assignee: Bendix Corp
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Filing: 1979-06-29
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Granted: 1980-12-30
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Expires: 1999-06-29
Abstract
Abstract A band brake assembly includes a housing which carries a rotatable member and a band with a friction lining substantially surrounding the rotatable member. A parking brake lever is connected to a parking brake actuator and also to a plurality of links which are connected to respective ends of the band. The parking brake lever engages the housing and pivots relative to the housing to move the links and separate the band ends and contract the band in response to the movement of the parking brake actuator. A pivotal connection joins the links to each other and to the parking brake lever.
Inventors
- 👤 Norman C. Van De Sompele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:09
CPC Classifications
F; F16; F16D; F16D49/00; F16D49/08; F16D49/10; F16D49/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
192 words
In a band brake assembly having a housing, a rotatable member carried by said housing, a band disposed within said housing and carrying a friction lining substantially surrounding said rotatable member, a pair of unitary links having a common pivotal connection therebetween, each link being connected with a respective end of said band, a hydraulic service brake actuator cooperating with said pair of links to contract said friction lining into engagement with said rotatable member to retard the rotation of said rotatable member, a parking brake actuator, and a unitary parking brake lever connected to said parking brake actuator, said parking brake lever including a first end pivotally engaging said housing and a second end remote from said first end connecting with said parking brake actuator and engaging said common pivotal connection and cooperating with said pair of links to contract said friction lining into engagement with said rotatable member upon a parking brake application, characterized by said unitary parking brake lever being engageable with said housing, the engagement of said lever with said housing defining a fulcrum about which said lever pivots in response to operation of said parking brake actuator.
Claim 2
Dependent Claim
192 words
In a band brake assembly having a housing, a rotatable member carried by said housing, a band disposed within said housing and carrying a friction lining substantially surrounding said rotatable member, a pair of unitary links having a common pivotal connection therebetween, each link being connected with a respective end of said band, a hydraulic service brake actuator cooperating with said pair of links to contract said friction lining into engagement with said rotatable member to retard the rotation of said rotatable member, a parking brake actuator, and a unitary parking brake lever connected to said parking brake actuator, said parking brake lever including a first end pivotally engaging said housing and a second end remote from said first end connecting with said parking brake actuator and engaging said common pivotal connection and cooperating with said pair of links to contract said friction lining into engagement with said rotatable member upon a parking brake application, characterized by said unitary parking brake lever being engageable with said housing, the engagement of said lever with said housing defining a fulcrum about which said lever pivots in response to operation of said parking brake actuator.
Claim 3
Dependent Claim
23 words
The band brake assembly of claim 1, wherein: said pivotal connection also pivotally connects said pair of links with said parking brake lever.
Claim 4
Dependent Claim
24 words
The band brake assembly of claim 3, wherein: said pivotal connection is located between said first and second ends of said parking brake lever.
References Cited (Backward Citations)
US1464761A
Cited
FR766500A
Cited
DE1030201B
Cited
US3036668A
Cited
US3220514A
Cited
US3386534A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-30 | 1984-06-30 | 1984-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-30 | 1988-06-30 | 1988-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-30 | 1992-06-30 | 1992-12-30 | $7700.00 | Window Closed / Lapsed |