Patent US3681610A successfully refreshed from Google Patents.
US3681610A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety switch
Assignee: Individual
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Filing: 1971-04-21
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Granted: 1972-08-01
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Expires: 1991-04-21
Abstract
Abstract A safety system for any type of vehicle and which incorporates a means whereby the engine is shut off prior to a collision so to prevent the vehicle from catching fire and exploding, the device also including a four alarm system which at the same time is activated so to warn and notify other persons so that help can be summoned.
Inventors
- 👤 Jack R Pratt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:03
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
223 words
In a safety switch system, the combination of a means for shutting off the engine of a vehicle so to prevent a fire and explosion in case of a collision crash, said system including a means between a power source and an ignition of said engine, said means breaking an electrical circuit between said power supply and ignition while at the same time turning on an alarm system, said system incorporating slideable contact plate for selectively engaging either a pair of contacts between an ignition switch and an ignition coil or alternately engaging a pair of contacts of a warning system said means comprising slideable probe projecting forwardly of said vehicle, said probe being rearwardly slideable into a cylinder, said probe in its forward position closing a circuit between contacts for closing electrical power between said power supply and said ignition, said probe in an intermediate slideable position closing a circuit between a solenoid and said power supply, said solenoid manually operating a lever of a mechanical powered warning alarm, and said probe at its rear end having a transverse conductor to form a bridge between the contacts of said power supply and ignition or the contacts of said power supply and solenoid, said bridge at its rearmost position having passed beyond the last said pair of contacts, into an electrically disengaged location.
Claim 2
Dependent Claim
223 words
In a safety switch system, the combination of a means for shutting off the engine of a vehicle so to prevent a fire and explosion in case of a collision crash, said system including a means between a power source and an ignition of said engine, said means breaking an electrical circuit between said power supply and ignition while at the same time turning on an alarm system, said system incorporating slideable contact plate for selectively engaging either a pair of contacts between an ignition switch and an ignition coil or alternately engaging a pair of contacts of a warning system said means comprising slideable probe projecting forwardly of said vehicle, said probe being rearwardly slideable into a cylinder, said probe in its forward position closing a circuit between contacts for closing electrical power between said power supply and said ignition, said probe in an intermediate slideable position closing a circuit between a solenoid and said power supply, said solenoid manually operating a lever of a mechanical powered warning alarm, and said probe at its rear end having a transverse conductor to form a bridge between the contacts of said power supply and ignition or the contacts of said power supply and solenoid, said bridge at its rearmost position having passed beyond the last said pair of contacts, into an electrically disengaged location.
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) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |