US3962912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Test bench device for vehicles
Assignee: Individual
•
Filing: 1975-03-19
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Granted: 1976-06-15
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Expires: 1995-03-19
Abstract
Abstract A test bench device is utilized for testing instruments used on road vehicles and the like, and permits testing to be carried out while the vehicle is in motion. The apparatus comprises in combination a plurality of pulse transmitter means, a first of which is positioned on the rear wheels of the vehicle, and a second of which is positioned on the gear-box drive of the vehicle, and a third of which is positioned to record movement of a tape means or the like which unwinds in accordance with movement of the vehicle along a test course. In a modification, the vehicle moves between two fixed exterior datum points defining a path along which the vehicle is moved to effect measurement. For verifying distances and corresponding times in taxi-meters, the apparatus comprises a portable variable speed motor, a digital tachometer combined with the motor, a chronometer, a quartz standard emitting vibrations and serving for calibration of the chronometer, and an optoelectronic transducer adapted to sense changes of the price indicator in the taxi-meter.
Inventors
- 👤 Jean Borie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:41
CPC Classifications
G; G01; G01M; G01M17/00; G01M17/007; G01M17/0072
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
190 words
A device for testing road vehicles having a pair of road wheels and a gearbox output shaft, said device comprising, in combination: i. measuring means moving with said vehicle along a flat road surface, ii. a first pulse transmitter coupled to said measuring means, and a first pulse counter associated with said first pulse transmitter to indicate the distance moved by the vehicle, iii. second pulse transmitter means coupled to said pair of road wheels of the vehicle, and a second pulse counter associated with said second pulse transmitter means for determining the extent of rotation of said road wheels, iv. third pulse transmitter means coupled to said gearbox output shaft, and a third pulse counter associated with said third pulse transmitter means, whereby for a given distance of movement of the vehicle as indicated by the first pulse counter, the second pulse counter indicates the extent of rotation of the road wheels corresponding to that distance of movement, and the third pulse counter indicates the number of rotations of the gearbox output shaft corresponding to said distance of movement and to said extent of rotation of the road wheels.
Claim 2
Independent Claim
190 words
A device for testing road vehicles having a pair of road wheels and a gearbox output shaft, said device comprising, in combination: i. measuring means moving with said vehicle along a flat road surface, ii. a first pulse transmitter coupled to said measuring means, and a first pulse counter associated with said first pulse transmitter to indicate the distance moved by the vehicle, iii. second pulse transmitter means coupled to said pair of road wheels of the vehicle, and a second pulse counter associated with said second pulse transmitter means for determining the extent of rotation of said road wheels, iv. third pulse transmitter means coupled to said gearbox output shaft, and a third pulse counter associated with said third pulse transmitter means, whereby for a given distance of movement of the vehicle as indicated by the first pulse counter, the second pulse counter indicates the extent of rotation of the road wheels corresponding to that distance of movement, and the third pulse counter indicates the number of rotations of the gearbox output shaft corresponding to said distance of movement and to said extent of rotation of the road wheels.
Claim 3
Dependent Claim
105 words
A device, as claimed in claim 1, wherein said second pulse transmitter means comprises a first wheel transmitter coupled to a first wheel of said pair of road wheels and a second wheel transmitter means coupled to a second wheel of said pair of road wheels, said second pulse counter being arranged to record the pulses received from said first wheel transmitter for a first half revolution of the associated wheel, and to record the pulses received from said second wheel transmitter for a second half revolution of the associated wheel, whereby said second pulse counter indicates the mean circumference of said pair of wheels.
Claim 4
Dependent Claim
76 words
A device, as claimed in claim 1, wherein said measuring means comprises a spool of filamentary material mounted at a fixed point on the ground in relation to the path of movement of the vehicle, and a rotary pulse transmitter, said filamentary material being passed about said rotary pulse transmitter and connected to the vehicle, whereby as the vehicle moves along the ground the pulse transmitter is rotated corresponding to the distance moved by the vehicle.
Claim 5
Dependent Claim
52 words
A device, as claimed in claim 1, wherein said first pulse transmitter of said measuring means is mounted on the vehicle, and wherein actuating means are disposed at spaced positions along a path of movement of the vehicle and adapted to actuate the first pulse transmitter as it passes said spaced positions.
References Cited (Backward Citations)
US1924144A
Cited
US2781659A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-15 | 1979-12-15 | 1980-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-15 | 1983-12-15 | 1984-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-15 | 1987-12-15 | 1988-06-15 | $7700.00 | Window Closed / Lapsed |