Patent US3763699A successfully refreshed from Google Patents.
US3763699A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas supported free running belts for testing operational characteristics of engine driven vehicles supported on the belts
Assignee: Neles Jamesbury Inc
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Filing: 1969-06-23
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Granted: 1973-10-09
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Expires: 1989-06-23
Abstract
Abstract A pair of parallel belts upon which the wheels of a vehicle are to be mounted, so that the wheels may turn while the vehicle is held stationary, and plenum chambers arranged under the belt and providing air under pressure impinging upon the belt under each wheel.
Inventors
- 👤 A Sangster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 05:27
CPC Classifications
G; G01; G01M; G01M17/00; G01M17/007; G01M17/0072; G01M17/0074
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
138 words
Apparatus for testing wheeled power-operated vehicles comprising a pair of generally horizontal endless conveyor belts in spaced parallel relation, each belt having a top and a bottom run, means supporting the belts, means providing upward fluid pressure at the under side of the top run of each belt lifting the same in the areas of the upward pressure, the means providing the upward pressure being located in the area of said wheels on a vehicle positioned on said belts, the means providing the upward pressure comprising plenum chambers each having an upper perforated surface, a source of supply for air under pressure supplying the plenum chambers, and means for selectively opening or closing the perforations in the plenum chamber to provide support under the contact points of the vehicle tires regardless of width and wheel base dimensions thereof.
Claim 2
Dependent Claim
138 words
Apparatus for testing wheeled power-operated vehicles comprising a pair of generally horizontal endless conveyor belts in spaced parallel relation, each belt having a top and a bottom run, means supporting the belts, means providing upward fluid pressure at the under side of the top run of each belt lifting the same in the areas of the upward pressure, the means providing the upward pressure being located in the area of said wheels on a vehicle positioned on said belts, the means providing the upward pressure comprising plenum chambers each having an upper perforated surface, a source of supply for air under pressure supplying the plenum chambers, and means for selectively opening or closing the perforations in the plenum chamber to provide support under the contact points of the vehicle tires regardless of width and wheel base dimensions thereof.
Claim 3
Dependent Claim
15 words
The apparatus of claim 1 wherein the means providing the upward pressure comprises plenum chambers.
Claim 4
Dependent Claim
34 words
The apparatus of claim 1 wherein the means providing the upward pressure comprises plenum chambers each having an upper perforated surface, and a source of supply for air under pressure supplying the plenum chambers.
Claim 5
Dependent Claim
36 words
The apparatus of claim 3 including means for selectively opening or closing the perforations in the plenum chamber to provide support under the contact point of the vehicle tires regardless of width and wheelbase dimensions thereof.
Claim 6
Dependent Claim
39 words
The apparatus of claim 1 including a dynomometer mounted on at least one of the belt supports for rotation by a belt, the dynamometer being loaded by the action of the vehicle engine, and indicating brake action upon demand.
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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |