US3665384A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Road vehicle electrical system with transducers detecting faults and producing unique outputs operating a receiving and display unit
Assignee: ZF International UK Ltd
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Filing: 1970-08-25
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Granted: 1972-05-23
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Expires: 1990-08-25
Abstract
Abstract A fault detecting system for a road vehicle includes a plurality of fault transducers, each producing its own unique output in the event of a fault. The receiving and display unit is operable by these unique outputs for indicating each fault, and a single cable is used to connect all the transducers to the receiving and display unit.
Inventors
- 👤 Andrew Peter Ives
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:41
CPC Classifications
G; G08; G08B; G08B23/00; G07; G07C; G07C5/00; G07C5/08; G07C5/0816
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
78 words
A fault detecting system for a road vehicle, comprising a plurality of fault transducers each producing in the event of a fault an output in the form of a voltage level, each of said transducers producing a different voltage level, so that the output produced by each transducer is unique, a receiving and display unit operable by said unique output for indicating each fault, and a single cable connecting all the transducers to the receiving and display unit.
Claim 2
Dependent Claim
78 words
A fault detecting system for a road vehicle, comprising a plurality of fault transducers each producing in the event of a fault an output in the form of a voltage level, each of said transducers producing a different voltage level, so that the output produced by each transducer is unique, a receiving and display unit operable by said unique output for indicating each fault, and a single cable connecting all the transducers to the receiving and display unit.
Claim 3
Dependent Claim
49 words
A system as claimed in claim 1 in which the receiving and display unit includes a plurality of voltage-sensitive switching circuits, each of which is sensitive to a small voltage range so that only one of the switching circuits is operated by a given voltage on said single cable.
Claim 4
Dependent Claim
92 words
A system as claimed in claim 1 in which the receiving and display unit includes a plurality of switching circuits each of which requires a minimum voltage to cause it to operate, so that a given voltage level corresponding to a given fault operates its own switching circuit, but is also capable of operating the switching circuits which can be operated by lower voltage levels, the switching circuits being interconnected so that for a given voltage level, operation of the switching circuit which can be operated by lower voltage levels is prevented.
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) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |