US3722629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for indicating the actuated position of a manual brake and of the wear of the brake lining especially for motor vehicles
Assignee: Volkswagen AG
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Filing: 1971-04-08
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Granted: 1973-03-27
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Expires: 1991-04-08
Abstract
Abstract In a brake having a plurality of relatively movable brake elements, a device for selectively moving the brake elements manually and/or by foot relative to each other, and an adjusting device to adjust the distance between the brake elements upon their wear, a device for indicating when the brake elements have been actuated manually and when a predetermined wear between the brake elements has been exceed, the indicating device includes a force transmitting arrangement associated with the manual moving device and with the adjusting device and adapted to move along a predetermined path upon actuation by the two last-mentioned devices, and an electric contact located in the above path and actuated by the force transmitting device upon movement thereof along the above path, the contact forming part of a signal circuit becoming energized upon actuation of the contact.
Inventors
- 👤 M Totschnig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:17
CPC Classifications
F; F16; F16D; F16D66/00; F16D66/02; F16D66/021; F16D66/022; F16D66/023; B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; F16D2066/003
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
157 words
A braking system having a pair of brake elements movable relative to each other, first control means operable for moving said brake elements in opposite directions between a normal position and a braking position; second control means operable for selectively moving said brake elements between said positions irrespective of said first control means, comprising, in combination, a pressure link connected near one end thereof with a predetermined play to one brake element, a two-armed lEver having one arm thereof connected to the other brake element, and its fulcrum connected near the free end of said pressure link; the other arm of said lever being coupled to said second control means; and a signal device including a limit switch located in the path of movement of said lever to actuate said signal device when said second control means is actuated, or when the wear of said elements exceeds said predetermined play and said first control means is actuated.
Claim 2
Dependent Claim
157 words
A braking system having a pair of brake elements movable relative to each other, first control means operable for moving said brake elements in opposite directions between a normal position and a braking position; second control means operable for selectively moving said brake elements between said positions irrespective of said first control means, comprising, in combination, a pressure link connected near one end thereof with a predetermined play to one brake element, a two-armed lEver having one arm thereof connected to the other brake element, and its fulcrum connected near the free end of said pressure link; the other arm of said lever being coupled to said second control means; and a signal device including a limit switch located in the path of movement of said lever to actuate said signal device when said second control means is actuated, or when the wear of said elements exceeds said predetermined play and said first control means is actuated.
Claim 3
Dependent Claim
39 words
The braking system according to claim 1, further comprising abutment means located in the path of movement of said other arm of said lever and supporting said limit switch, said limit switch being normally engaged by said other arm.
Claim 4
Dependent Claim
37 words
The braking system according to claim 1, wherein said pressure link defines at said one end an oblong hole and said one element is connected to said pressure link by a bolt guided in said oblong hole.
Claim 5
Dependent Claim
51 words
The braking system according to claim 1, further including adjusting means for limiting the maximum permissible distance between said elements upon wear thereof, and wherein said adjusting means is said force transmitting means so that the latter actuates operable for readjusting said play when said maximum permissible wear has been reached.
Claim 6
Dependent Claim
17 words
The braking system according to claim 2 wherein said abutment means is stationarily arranged at said brake.
Claim 7
Dependent Claim
32 words
The braking system according to claim 2, wherein said relatively movable elements include a stationary brake drum and a brake shoe, and wherein said abutment means is connected to said brake shoe.
Claim 8
Dependent Claim
19 words
The braking system according to claim 2, wherein said limit switch and said abutment means form one structural unit.
Claim 9
Dependent Claim
18 words
The braking system according to claim 2, wherein said limit switch is designed as a resiliently yieldable contact.
Claim 10
Dependent Claim
16 words
The braking system according to claim 1, wherein said limit switch includes a switch push rod.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |