US4876525A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Emergency warning brake system
Assignee: Individual
•
Filing: 1988-02-22
•
Granted: 1989-10-24
•
Expires: 2008-02-22
Abstract
Abstract On a vehicle, an emergency signal indicating a skidding condition is displayed by flashing the brake lights which are controlled by an antiskid brake system.
Inventors
- 👤 Sylvia Gross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:04
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/448
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
In a vehicle equipped with an external signal visible to other motorists, which indicates that the brakes of said vehicle have been applied; and equipped with an antiskid brake system: control system, in combination with an antiskid brake system, in combination with an external brake signal visible to other motorists, controlling the brake signal to pulsate when the antiskid brake system pulsates.
Claim 2
Dependent Claim
62 words
In a vehicle equipped with an external signal visible to other motorists, which indicates that the brakes of said vehicle have been applied; and equipped with an antiskid brake system: control system, in combination with an antiskid brake system, in combination with an external brake signal visible to other motorists, controlling the brake signal to pulsate when the antiskid brake system pulsates.
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) | 1992-10-23 | 1993-04-24 | 1993-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-23 | 1997-04-24 | 1997-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-23 | 2001-04-24 | 2001-10-24 | $7700.00 | Window Closed / Lapsed |