US3748639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety belt alarm system
Assignee: Individual
•
Filing: 1971-11-26
•
Granted: 1973-07-24
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Expires: 1991-11-26
Abstract
Abstract A motor vehicle seat belt alarm system includes a body structure and a seat belt assembly. Transmitter and receiver devices are attached to the body structure and to a portion of the seat belt assembly to determine if the latter passes in front of a passenger in the vehicle. Electrical circuitry energizes an alarm when the seat belt assembly is not fastened or properly positioned. The transmitter device may produce an ultrasonic signal.
Inventors
- 👤 T Dobedoe
- 👤 R Robins
- 👤 F Brookes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:00
CPC Classifications
B; B60; B60R; B60R22/00; B60R22/48; B60R2022/4808; B60R2022/4816; B60R2022/4858; B60R2022/4866; B60R2022/4883; B60R2022/4891
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
114 words
A motor vehicle seat belt alarm system for the protection of a passenger in said motor vehicle, which comprises: a motor vehicle body structure; a forward-facing passenger seat mounted within said body structure; a seat belt assembly connected to said body structure; transmitter means and receiver means, said receiver means being responsive to said transmitter means, for determining if a portion of said seat belt assembly passes in front of said passenger when said passenger is in said seat; an alarm; and electrical circuit means for energizing said alarm when said transmitter means and said receiver means determines that said portion of said seat belt assembly does not pass in front of said passenger.
Claim 2
Dependent Claim
114 words
A motor vehicle seat belt alarm system for the protection of a passenger in said motor vehicle, which comprises: a motor vehicle body structure; a forward-facing passenger seat mounted within said body structure; a seat belt assembly connected to said body structure; transmitter means and receiver means, said receiver means being responsive to said transmitter means, for determining if a portion of said seat belt assembly passes in front of said passenger when said passenger is in said seat; an alarm; and electrical circuit means for energizing said alarm when said transmitter means and said receiver means determines that said portion of said seat belt assembly does not pass in front of said passenger.
Claim 3
Dependent Claim
33 words
A seat belt alarm system in accordance with claim 1, wherein said transmitter means is fixed to said seat belt assembly portion and wherein said receiver means is fixed to said body structure.
Claim 4
Dependent Claim
33 words
A seat belt alarm system in accordance with claim 1, wherein said receiver means is fixed to said seat belt assembly portion and wherein said transmitter means is fixed to said body structure.
Claim 5
Dependent Claim
31 words
A seat belt alarm system in accordance with claim 1, wherein said electrical circuit means includes seat load sensing switch means for indicating the presence of said passenger in said seat.
Claim 6
Dependent Claim
42 words
An alarm system in accordance with claim 4, wherein said electrical circuit means further includes timer and switch means for cutting-out said transmitter means and said receiver means a predetermined time interval after said receiver means has responded to said transmitter means.
Claim 7
Dependent Claim
100 words
A seat belt alarm system in accordance with claim 5, wherein said alarm comprises a first alarm and a second alarm and wherein said electrical circuit means further includes circuit means for energizing said first alarm when said transmitter means and said receiver means determines that said seat bealt assembly portion does not pass in front of said passenger, and circuit means for energizing said second alarm when said transmitter means and said receiver means determines that said seat belt assembly portion does not pass in front of said passenger and said vehicle is in a pedetermined normal driving condition.
Claim 8
Dependent Claim
63 words
A seat belt alarm system in accordance with claim 8, wherein said electrical circuit means includes means for preventing, once said vehicle has been placed in said normal driving condition, energization of said second alarm for a predetermined time interval after said transmitter means aNd said receiver means determines that said seat belt assembly portion does not pass in front of said passenger.
Claim 9
Dependent Claim
107 words
A seat belt alarm system in accordance with claim 1, wherein said alarm comprises a first alarm and a second alarm and wherein said electrical circuit means further includes circuit means for energizing said first alarm when said transmitter means and said receiver means determines that said seat belt assembly portion does not pass in front of said passenger, and wherein said electrical circuit means further includes circuit means for energizing said second alarm when said transmitter means and said receiver means determines that said seat belt assembly portion does not pass in front of said passenger and said vehicle is in a predetermined normal driving condition.
Claim 10
Dependent Claim
63 words
A seat belt alarm system in accordance with claim 10, wherein said electrical circuit means includes means for preventing, once said vehicle has been placed in said normal driving condition, energization of said second alarm for a predetermined time interval after said transmitter means and said receiver means determines that said seat belt assembly portion does not pass in front of said passenger.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |