Patent US3861237A successfully refreshed from Google Patents.
US3861237A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Parking brake actuating mechanism
Assignee: Caterpillar Inc
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Filing: 1973-05-29
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Granted: 1975-01-21
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Expires: 1993-05-29
Abstract
Abstract A parking brake actuating mechanism comprises a pedal actuated lever and a bellcrank, both pivotally mounted on a stationary support. A link is pivotally interconnected between the lever and a first arm of the bellcrank and a brake actuating linkage is interconnected between a second arm of the bellcrank and a conventional parking brake. Upon depression of the pedal actuated lever, the bellcrank will pivot to engage the parking brake whereupon a manually releasable detent mechanism will automatically hold the parking brake in such an engaged condition of operation.
Inventors
- 👤 William T Mounts
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 07:53
CPC Classifications
B; B60; B60T; B60T7/00; B60T7/02; B60T7/04; B60T7/045; B60T7/047; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20528; Y10T74/20558; Y10T74/20576; Y10T74/20636; Y10T74/20672; Y10T74/20708
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
82 words
A brake actuating mechanism comprising a stationary support, a pedal actuated lever pivotally mounted on said support, a bellcrank pivotally mounted on said support, a link pivotally interconnected between said lever and a first arm of said bellcrank, brake actuating means connected to a second arm of said bellcrank and adapted to be connected to a parking brake, and adjustment means for selectively adjusting the position of a first pivot pin, pivotally mounting said link on said lever, axially along said lever.
Claim 2
Dependent Claim
82 words
A brake actuating mechanism comprising a stationary support, a pedal actuated lever pivotally mounted on said support, a bellcrank pivotally mounted on said support, a link pivotally interconnected between said lever and a first arm of said bellcrank, brake actuating means connected to a second arm of said bellcrank and adapted to be connected to a parking brake, and adjustment means for selectively adjusting the position of a first pivot pin, pivotally mounting said link on said lever, axially along said lever.
Claim 3
Dependent Claim
19 words
The brake actuating mechanism of claim 1 further comprising a parking brake operatively connected to said brake actuating means.
Claim 4
Dependent Claim
60 words
The brake actuating mechanism of claim 1 wherein said adjustment means comprises an adjustable rod pivotally mounted on said support by a second pivot pin also pivotally mounting said lever on said support, said first pivot pin secured to a member adjustably mounted on said rod and said first pivot pin projecting through an elongated slot formed in said lever.
Claim 5
Dependent Claim
43 words
The brake actuating mechanism of claim 1 further comprising combined brake locking and release means for automatically locking said mechanism in its brake engaged condition of operation and for manually unlocking said mechanism to release it to its brake disengaged condition of operation.
Claim 6
Dependent Claim
54 words
The brake actuating mechanism of claim 4 wherein said combined brake locking and release means comprises a second lever connected to said first-mentioned lever, a slide bar movably mounted on said support and pawl and ratchet means for automatically locking said slide bar and said first-mentioned lever in said brake engaged condition of operation.
Claim 7
Dependent Claim
41 words
The brake actuating mechanism of claim 5 wherein the pawl and ratchet means comprises a pawl pivotally mounted on said support and at least one notch formed on said slide bar adapted to be engaged by a tooth of said pawl.
Claim 8
Dependent Claim
16 words
The brake actuating mechanism of claim 6 further comprising a handle pivotally mounted on said pawl.
Claim 9
Dependent Claim
24 words
The brake actuating mechanism of claim 7 further comprising spring means for urging the tooth of said pawl into pivoted engagement with said notch.
Claim 10
Dependent Claim
30 words
The brake actuating mechanism of claim 8 further comprising second spring means for urging said slide bar to a retracted position disengaging the tooth of said pawl from said notch.
Claim 11
Dependent Claim
74 words
In combination with a brake actuating mechanism, a combined brake locking and release means for automatically locking said mechanism in its brake engaged condition of operation and for manually unlocking said mechanism to release it to its brake disengaged condition of operation comprising a lever, a slide bar movably mounted on a support and pawl and ratchet means for automatically locking said slide bar and said lever in said brake engaged condition of operation.
Claim 12
Dependent Claim
74 words
In combination with a brake actuating mechanism, a combined brake locking and release means for automatically locking said mechanism in its brake engaged condition of operation and for manually unlocking said mechanism to release it to its brake disengaged condition of operation comprising a lever, a slide bar movably mounted on a support and pawl and ratchet means for automatically locking said slide bar and said lever in said brake engaged condition of operation.
Claim 13
Dependent Claim
39 words
The combination of claim 10 wherein the pawl and ratchet means comprises a pawl pivotally mounted on said support and at least one notch formed on said slide bar adapted to be engaged by a tooth of said pawl.
Claim 14
Dependent Claim
14 words
The combination of claim 11 further comprising a handle pivotally mounted on said pawl.
Claim 15
Dependent Claim
22 words
The combination of claim 12 further comprising spring means for urging the tooth of said pawl into pivoted engagement with said notch.
Claim 16
Dependent Claim
28 words
The combination of claim 13 further comprising second spring means for urging said slide bar to a retracted position disengaging the tooth of said pawl from said notch.
References Cited (Backward Citations)
US2943511A
Cited
US3261438A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-20 | 1978-07-22 | 1979-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-20 | 1982-07-22 | 1983-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-20 | 1986-07-22 | 1987-01-21 | $7700.00 | Window Closed / Lapsed |