US4024795A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle brake actuating systems
Assignee: Girling Ltd
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Filing: 1975-10-31
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Granted: 1977-05-24
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Expires: 1995-10-31
Abstract
Abstract A power assisted pedal assembly comprises a brake pedal pivotally connected at one end to a lever which is pivotal about a fixed point, the brake pedal having a connection intermediate its ends with an actuating member of a master cylinder to apply an operating force to the actuating member, and a power assistor operable in response to movement of the brake pedal to apply an assisting force to the brake pedal. The power assistor has a force-transmitting member which is separate from the actuating member and which is in force-transmitting engagement with the lever on or close to the line of action of the force applied to the actuating member by the brake pedal. The brake pedal and the lever pivot about the fixed point when the power assistor is operative and the pedal pivots about a point intermediate the fixed point and the connection between the lever and the actuating member upon failure of the power assistor.
Inventors
- 👤 Patrick Frank Sawyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:44
CPC Classifications
B; B60; B60T; B60T13/00; B60T13/10; B60T13/24; B60T13/241; B60T13/246; B60T13/248; B60T7/00; B60T7/02; B60T7/04; B60T7/06
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
215 words
A power assisted pedal assembly comprising a lever pivotable about a fixed point, a brake pedal, a link having a first pivotal connection at one end with said lever and a second pivotal connection at the other end with said brake pedal, an actuating member adapted for connection to brake operating means and having a connection with said brake pedal intermediate the ends of said brake pedal whereby said brake pedal can apply a force to said actuating member along a predetermined line of action, and a power assisting means operable in response to movement of said brake pedal to apply an assisting force to said brake pedal said power assisting means having a force-transmitting member which is separate from said actuating member and which is in force-transmitting engagement with said lever and said link in the region of said line of action of the force applied to said actuating member by said brake pedal and so that said brake pedal, link and lever pivot about said fixed point when said power assisting means is operative, said pedal having a second pivot point intermediate said fixed point and said connection between said lever and said actuating member and means causing said pedal to pivot about said second point upon failure of said power assisting means.
Claim 2
Dependent Claim
215 words
A power assisted pedal assembly comprising a lever pivotable about a fixed point, a brake pedal, a link having a first pivotal connection at one end with said lever and a second pivotal connection at the other end with said brake pedal, an actuating member adapted for connection to brake operating means and having a connection with said brake pedal intermediate the ends of said brake pedal whereby said brake pedal can apply a force to said actuating member along a predetermined line of action, and a power assisting means operable in response to movement of said brake pedal to apply an assisting force to said brake pedal said power assisting means having a force-transmitting member which is separate from said actuating member and which is in force-transmitting engagement with said lever and said link in the region of said line of action of the force applied to said actuating member by said brake pedal and so that said brake pedal, link and lever pivot about said fixed point when said power assisting means is operative, said pedal having a second pivot point intermediate said fixed point and said connection between said lever and said actuating member and means causing said pedal to pivot about said second point upon failure of said power assisting means.
Claim 3
Dependent Claim
40 words
A pedal assembly according to claim 1, wherein said second pivot point intermediate said fixed point and said connection between said lever and said actuating member is constituted by said second pivotal connection of said link with said brake pedal.
Claim 4
Dependent Claim
31 words
A pedal assembly according to claim 1, wherein said force-transmitting means has a connection with said lever in the region of said connection between said actuating member and said brake pedal.
Claim 5
Dependent Claim
18 words
A pedal assembly according to claim 1, wherein said actuating member and said force-transmitting member have coincident axes.
Claim 6
Dependent Claim
17 words
A pedal assembly according to claim 1, wherein said force-transmitting member is parallel with said actuating member.
Claim 7
Dependent Claim
49 words
A pedal assembly according to claim 1, including first biasing means which bias said link and said pedal towards each other in the region of their said connection and second biasing means which bias said link and lever away from each other in the region of their said connection.
Claim 8
Dependent Claim
42 words
A pedal assembly according to claim 1, including an operating member which is movable to actuate said power assisting means, wherein said operating member is engaged by said link and operated in response to movement of said link relative to said lever.
Claim 9
Dependent Claim
37 words
A pedal assembly according to claim 7, including means permitting a small degree of initial movement of said pedal and said link relative to said lever, said initial movement of said link actuating the power assisting means.
Claim 10
Dependent Claim
19 words
A pedal assembly according to claim 1, wherein said force-transmitting member engages said brake pedal rearwardly of said pedal.
Claim 11
Dependent Claim
42 words
A pedal assembly according to claim 1, wherein said power assisting means is connected to said lever at said connection of said link with said lever, whereby said power assisting means acts on said brake pedal in the region of that connection.
Claim 12
Dependent Claim
19 words
A pedal assembly according to claim 1, wherein said power assisting means is located rearwardly of said brake pedal.
Claim 13
Dependent Claim
21 words
A pedal assembly according to claim 1, wherein said power assisting means is connected to the lower end of said lever.
Claim 14
Dependent Claim
27 words
A pedal assembly according to claim 1, wherein said power assisting means is located on the same side of said brake pedal as said brake actuating means.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |