US3952284A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable fluid pressure actuated vehicle tail light system
Assignee: Lee Raymond Organization Inc
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Filing: 1974-10-09
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Granted: 1976-04-20
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Expires: 1994-10-09
Abstract
Abstract A tail light system for a vehicle which indicates the severity of braking action of the equipped vehicle. Multiple tail lights are each operated by individual switches linked to the hydraulic brake system so that the quantity or color of the indicated lights is responsive to the pressure of the hydraulic brake system, with each switch responsive to a different hydraulic pressure.
Inventors
- 👤 Robert D. Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:09
CPC Classifications
H; H01; H01H; H01H35/00; H01H35/24; H01H35/26; H01H35/2657; B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/444
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A vehicle tail light indication system which indicates the severity of braking application of the vehicle in which it is installed comprising a multiplicity of tail lights each individually connected to an individual electric switch, each said electric switch being linked by mechanical means to the hydraulic fluid of the hydraulic brake line of the attached vehicle, each said switch being responsive in action to the magnitude of hydraulic pressure of the brake line, with each switch fitted with adjustment means to regulate the threshold responsiveness of the switch to a specific magnitude of hydraulic pressure, so that the braking application effect is indicated by the number of tail lights that are simultaneously actuated.
Claim 2
Dependent Claim
114 words
A vehicle tail light indication system which indicates the severity of braking application of the vehicle in which it is installed comprising a multiplicity of tail lights each individually connected to an individual electric switch, each said electric switch being linked by mechanical means to the hydraulic fluid of the hydraulic brake line of the attached vehicle, each said switch being responsive in action to the magnitude of hydraulic pressure of the brake line, with each switch fitted with adjustment means to regulate the threshold responsiveness of the switch to a specific magnitude of hydraulic pressure, so that the braking application effect is indicated by the number of tail lights that are simultaneously actuated.
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) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |