Patent US3741033A successfully refreshed from Google Patents.
US3741033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle emergency brake actuating mechanism
Assignee: PENNSYLVANIA WIRE ROPE CORP
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Filing: 1971-12-29
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Granted: 1973-06-26
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Expires: 1991-12-29
Abstract
Abstract A vehicle emergency brake actuating mechanism wherein an overcenter toggle linkage is operatively connected between the foot pedal lever and the brake actuating cable, whereby pressure can be applied to the emergency brake pedal to selectively brake the vehicle in a manner similar to the conventional hydraulic brake system, or to fully actuate the emergency brake by forcing the toggle linkage to the over-center locked position. A brake release lever is provided for moving the toggle linkage to the release position, and a resilient connection is provided between the toggle linkage and the end of the brake actuating cable to insure a constant tension on the emergency brake system.
Inventors
- 👤 D Wilke
- 👤 J Kraus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:33
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; Y10T74/20564
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
82 words
In a vehicle emergency brake actuating mechanism of the type including a foot pedal lever and a brake actuating cable, the improvement comprising an over-center type toggle linkage operatively connected between the foot pedal lever and the brake actuating cable, whereby pressure can be applied to the emergency brake pedal to selectively brake the vehicle in a manner similar to the conventional hydraulic brake system, or to fully actuate the emergency brake by forcing the toggle linkage to the overcenter locked position.
Claim 2
Dependent Claim
82 words
In a vehicle emergency brake actuating mechanism of the type including a foot pedal lever and a brake actuating cable, the improvement comprising an over-center type toggle linkage operatively connected between the foot pedal lever and the brake actuating cable, whereby pressure can be applied to the emergency brake pedal to selectively brake the vehicle in a manner similar to the conventional hydraulic brake system, or to fully actuate the emergency brake by forcing the toggle linkage to the overcenter locked position.
Claim 3
Dependent Claim
129 words
A vehicle emergency brake actuating mechanism according to claim 1, wherein the foot pedal lever is pivotally connected to a fixed bracket, the pivotal connection of the foot pedal lever to the bracket forming the fixed pivot of the toggle linkage, and a lever pivotally connected to the end portion of the foot pedal lever, the pivotal connection of the lever to the foot pedal lever forming the movable pivot of the toggle linkage, whereby when the movable pivot is disposed on one side of the center line of the fixed pivot the foot pedal lever is in the released position, and when the movable pivot is disposed on the opposite side of the center line of the fixed pivot the foot pedal lever is in the locked position.
Claim 4
Dependent Claim
69 words
A vehicle emergency brake actuating mechanism according to claim 2, wherein a release lever is pivotally connected to the bracket and adapted to engage the toggle linkage when said movable pivot is disposed on said opposite side of the fixed pivot, said release lever being movable to cam the toggle linkage to the one side of the center line of the fixed pivot to release the foot pedal lever.
Claim 5
Dependent Claim
50 words
A vehicle emergency brake actuating mechanism according to claim 2, wherein the end of the brake actuating cable is secured to one end of said lever, the tension in said cable maintaining the movable pivot on said opposite side of the center line of the fixed pivot when disposed thereat.
Claim 6
Dependent Claim
55 words
A vehicle emergency brake actuating mechanism according to claim 4, wherein a resilient connector is mounted between the lever and the end of the brake actuating cable to thereby insure constant tension on the brake system to compensate for variations of length within the system due to extreme temperature variAtions, or varying chassis load conditions.
Claim 7
Dependent Claim
44 words
A vehicle emergency brake actuating mechanism according to claim 5, wherein the resilient connector comprises a rubber block secured to said lever, said cable extending through said block and held therein by a nut washer assembly threaded on the end portion of the cable.
Claim 8
Dependent Claim
38 words
A vehicle emergency brake actuating mechanism according to claim 5, wherein the resilient connector comprises a leaf spring having one end connected to the end of the brake actuating cable and the opposite end connected to said lever.
Claim 9
Dependent Claim
61 words
A vehicle emergency brake actuating mechanism according to claim 4, wherein said lever and said foot pedal lever are disposed on one side of said bracket, an elongated slot formed in said bracket, a transverse pin connected to the end of said lever and extending through said slot, the end of said brake actuating cable being operatively connected to said pin.
Claim 10
Dependent Claim
104 words
In a vehicle brake actuating mechanism of the type including a foot pedal lever and associated linkage including a lever connected to a brake actuating cable, the improvement comprising, a rubber block mounted between the end of the brake actuating cable and the lever to thereby insure constant tension on the brake system to compensate for variations of length within the system due to extreme temperature variations, or varying chassis load conditions, said rubber block being secured to said lever, and said cable extending through said rubber block and held therein by a nut washer assembly threaded on the end portion of the cable.
Claim 11
Dependent Claim
104 words
In a vehicle brake actuating mechanism of the type including a foot pedal lever and associated linkage including a lever connected to a brake actuating cable, the improvement comprising, a rubber block mounted between the end of the brake actuating cable and the lever to thereby insure constant tension on the brake system to compensate for variations of length within the system due to extreme temperature variations, or varying chassis load conditions, said rubber block being secured to said lever, and said cable extending through said rubber block and held therein by a nut washer assembly threaded on the end portion of the cable.
Claim 12
Dependent Claim
80 words
In a vehicle brake actuating mechanism of the type including a foot pedal lever and associated linkage including a lever connected to a brake actuating cable, the improvement comprising, a leaf spring having one end connected to the end of the brake actuating cable and the opposite end connected to said lever, to thereby insure constant tension on the brake system to compensate for variations of length within the system due to extreme temperature variations, or varying chassis load conditions.
Claim 13
Dependent Claim
80 words
In a vehicle brake actuating mechanism of the type including a foot pedal lever and associated linkage including a lever connected to a brake actuating cable, the improvement comprising, a leaf spring having one end connected to the end of the brake actuating cable and the opposite end connected to said lever, to thereby insure constant tension on the brake system to compensate for variations of length within the system due to extreme temperature variations, or varying chassis load conditions.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-06-25 | 1976-12-25 | 1977-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-25 | 1980-12-25 | 1981-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-25 | 1984-12-25 | 1985-06-26 | $7700.00 | Window Closed / Lapsed |