US3978447A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety transmitting device
Assignee: Lawrence Peska Associates Inc
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Filing: 1975-07-01
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Granted: 1976-08-31
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Expires: 1995-07-01
Abstract
Abstract A safety transmitting device for warning a motor vehicle at a railroad crossing of the approach of a train includes a tuning fork mechanically communicating with the tracks, wherein the vibrations of the tracks causes the fork to transmit sound waves. The sound waves are converted to the electro-magnetic waves by a transmitter unit. The fork and transmitter unit are positioned at a predetermined distance from the crossing. The electromagnetic waves are picked up by a receiver unit in the motor vehicle and converted to the electrical energy which causes activation of a sound device and flashing light unit in the interior of the motor vehicle as well as activation of an electrical pump in the brake line assembly of the vehicle which causes automatic slow application of the brakes.
Inventors
- 👤 Frederick M. Bankes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:37
CPC Classifications
B; B61; B61L; B61L29/00; B61L29/24; B61L29/246; G; G08; G08G; G08G1/00; G08G1/16; G08G1/164
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
162 words
A safety transmitting device for warning motor vehicle approaching a railroad crossing of the simultaneous approaching of a train along the tracks, which comprises: a. a tuning fork adapted to mechanically communicate with said tracks, a vibration of said tracks due to said train moving on said tracks introducing a vibration in said tuning fork, said tuning fork emitting sound waves therefrom and said tuning fork adapted to be located at a predetermined distance from said crossing; b. a transmitter unit located next to said tuning fork for converting said sound waves from said fork to electromagnetic waves and transmitting said electromagnetic waves therefrom; c. a receiver unit adapted to be received in said motor vehicle and to receive said electromagnetic waves; d. a flashing light unit adapted to be received in an interior of said motor vehicle just forwardly of a driver; and e. an electric circuit of a battery of said motor vehicle, said flashing light and said receiver unit.
Claim 2
Dependent Claim
162 words
A safety transmitting device for warning motor vehicle approaching a railroad crossing of the simultaneous approaching of a train along the tracks, which comprises: a. a tuning fork adapted to mechanically communicate with said tracks, a vibration of said tracks due to said train moving on said tracks introducing a vibration in said tuning fork, said tuning fork emitting sound waves therefrom and said tuning fork adapted to be located at a predetermined distance from said crossing; b. a transmitter unit located next to said tuning fork for converting said sound waves from said fork to electromagnetic waves and transmitting said electromagnetic waves therefrom; c. a receiver unit adapted to be received in said motor vehicle and to receive said electromagnetic waves; d. a flashing light unit adapted to be received in an interior of said motor vehicle just forwardly of a driver; and e. an electric circuit of a battery of said motor vehicle, said flashing light and said receiver unit.
Claim 3
Dependent Claim
14 words
A device according to claim 1, wherein said circuit further includes an on/off switch.
Claim 4
Dependent Claim
27 words
A device according to claim 1, wherein said circuit further includes an electric pump adapted to be received in a brake line assembly of said motor vehicle.
Claim 5
Dependent Claim
37 words
A device according to claim 1, wherein said electric circuit further includes a sound device for emitting an audible signal to said driver, said sound device adapted to be mounted in said interior of said motor vehicle.
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) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |