Patent US4000408A successfully refreshed from Google Patents.
US4000408A
Expired / Lapsed
US
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Vehicular electrical safety apparatus
Assignee: Lawrence Peska Associates Inc
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Filing: 1975-06-03
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Granted: 1976-12-28
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Expires: 1995-06-03
Abstract
Abstract This disclosure pertains to apparatus mounted to the frame of a vehicle, sensitive to impacts exceeding a predetermined level. The impact device disables a main control relay which feeds all of the electrical circuitry of the vehicle. Turning the ignition switch to the "off" position also de-energizes the main control relay in the same fashion as the impact device further insuring that all electrical circuits in the vehicle are fully disabled.
Inventors
- 👤 Leo McCartney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:30
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
52 words
Vehicular electrical safety apparatus comprised of two main normally open relay contacts interposed between one battery terminal and the balance of the vehicle's electrical wiring, wherein the coil of said relay is in series with an impact switch and an ancillary ignition switch circuit and connected to the terminals of said battery.
Claim 2
Dependent Claim
52 words
Vehicular electrical safety apparatus comprised of two main normally open relay contacts interposed between one battery terminal and the balance of the vehicle's electrical wiring, wherein the coil of said relay is in series with an impact switch and an ancillary ignition switch circuit and connected to the terminals of said battery.
Claim 3
Dependent Claim
85 words
The vehicular electrical safety apparatus of claim 1 wherein said impact switch in the normal operating condition comprises a contact block in pressure contact with two contact points forming a closed electrical circuit, an expansion spring providing opposed force upon said contact block and a cam, pivotable lever means weighted at one end and fastened to said cam at the other, socket means providing a seat for said cam, said lever means axially parallel to said expansion spring, means to adjustably compress said expansion spring.
Claim 4
Dependent Claim
36 words
The vehicular electrical safety apparatus of claim 2 wherein said lever means uniformly pivotably responsive to impact forces directed radially at any angle transverse to the axis of said lever when in said normal operating condition.
Claim 5
Dependent Claim
58 words
The vehicular electrical safety apparatus of claim 1 wherein the ancillary ignition switch circuit is electrically independent from other electrically switched circuits comprising said ignition switch, means to close said ancillary switch circuit upon the closing of any of said other circuits, means to open said ancillary circuit upon the openings of all said other electrically switched circuits.
Claim 6
Dependent Claim
54 words
The ancillary switch of claim 4 comprised of annular ring having an insulating material form an arcuate portion thereof, to stationary electrical contacts angularly displaced from each other making contact with said ring and said insulating material and upon rotation of said ring and said insulating material said contacts electrically connecting with each other.
References Cited (Backward Citations)
US3251033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-12-28 | 1980-06-28 | 1980-12-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-12-28 | 1984-06-28 | 1984-12-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-12-28 | 1988-06-28 | 1988-12-28 | $7700.00 | Window Closed / Lapsed |