US4186595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake testing apparatus
Assignee: Dominion Tool and Die Co Inc
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Filing: 1978-09-08
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Granted: 1980-02-05
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Expires: 1998-09-08
Abstract
Abstract Two embodiments of a testing device for testing the hydraulic braking system of a motor vehicle. Each embodiment includes a supporting portion that is adapted to be fixed relative to a component of the vehicle in proximity to the brake pedal, such as the steering column and a force applying portion that is adapted to apply pressure to the brake pedal. Sensing means are provided that sense both the pressure applied to the brake pedal and the degree of travel of the brake pedal during a given time period.
Inventors
- 👤 Erich Domitter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:24
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/28; B; B60; B60T; B60T17/00; B60T17/18; B60T17/22; B60T17/221; B60T17/222; B60T17/223
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
A testing device for a pedal operated system comprising a supporting housing adapted to be fixed against movement relative to the pedal, a force applying portion supported for movement by said supporting housing into engagement with the pedal, power means within said housing for moving said force applying portion relative to said supporting portion for applying a force to the pedal, distance sensing means within said housing for sensing the distance of travel of said force applying portion relative to the supporting housing and force sensing means carried by said force applying portion for sensing the force applied to said pedal.
Claim 2
Dependent Claim
101 words
A testing device for a pedal operated system comprising a supporting housing adapted to be fixed against movement relative to the pedal, a force applying portion supported for movement by said supporting housing into engagement with the pedal, power means within said housing for moving said force applying portion relative to said supporting portion for applying a force to the pedal, distance sensing means within said housing for sensing the distance of travel of said force applying portion relative to the supporting housing and force sensing means carried by said force applying portion for sensing the force applied to said pedal.
Claim 3
Dependent Claim
42 words
A testing device as set forth in claim 1 wherein the force applying portion has a nose piece adapted to engage the pedal and another piece supporting said nose piece, the force sensing means comprising a strain gauge positioned between said pieces.
Claim 4
Dependent Claim
19 words
A testing device as set forth in claims 1 or 2 wherein the distance sensing means comprises a rheostat.
Claim 5
Dependent Claim
89 words
A testing device as set forth in claim 1 wherein the supporting housing is formed with a first, longitudinally extending bore, the power means comprising a piston slidably supported in said first bore and operative to apply a force to the force applying portion, said force applying portion having a tubular part affixed thereto and slidably supported in said bore, there being a second bore in said supporting housing parallel to said first bore, said force applying portion having a second tubular part slidably supported in said second bore.
Claim 6
Dependent Claim
29 words
A testing device as set forth in claim 4 wherein the distance sensing means is responsive to the movement of the second tubular part relative to the supporting housing.
Claim 7
Dependent Claim
20 words
A testing device as set forth in claims 1 or 2 wherein the distance sensing means comprises a rotary encoder.
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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |