US3683329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brake signal circuit
Assignee: Individual
•
Filing: 1969-09-08
•
Granted: 1972-08-08
•
Expires: 1989-09-08
Abstract
Abstract Apparatus for displaying a warning signal such as a light or horn in response to the sudden operation of the brake pedal of a vehicle. Sudden depression of the brake pedal of a vehicle causes the induction of a current in a switching circuit which causes actuation of a warning device. Means are provided to maintain the warning device actuated until depression of the brake pedal is terminated.
Inventors
- 👤 Gernot Sattler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:48
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44; B60Q1/441
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
133 words
Apparatus for displaying a warning signal in response to the sudden operation of the brake pedal of an auto, comprising: an inductance coil for inducing a current flow therein proportional to the rate of change of magnetic flux threading said inductance coil; a magnet secured to said brake pedal and extending through said inductance coil to provide magnetic flux threading said inductance coil such that operation of said brake pedal alters the relative position of said magnet, thereby changing the magnetic flux threading said inductance coil; an electrically activated signal means; and a relay connected to said inductance coil and responsive to the current induced in said inductance coil for completing an alarm signal circuit to provide electric power to said signal means in accordance with the current induced in said inductance coil.
Claim 2
Dependent Claim
133 words
Apparatus for displaying a warning signal in response to the sudden operation of the brake pedal of an auto, comprising: an inductance coil for inducing a current flow therein proportional to the rate of change of magnetic flux threading said inductance coil; a magnet secured to said brake pedal and extending through said inductance coil to provide magnetic flux threading said inductance coil such that operation of said brake pedal alters the relative position of said magnet, thereby changing the magnetic flux threading said inductance coil; an electrically activated signal means; and a relay connected to said inductance coil and responsive to the current induced in said inductance coil for completing an alarm signal circuit to provide electric power to said signal means in accordance with the current induced in said inductance coil.
Claim 3
Dependent Claim
58 words
Apparatus according to claim 1 wherein said relay includes a rotatable connector arm for operating an alarm signal switch in said alarm signal circuit, and wherein said alarm signal circuit includes: retaining means responsive to the passage of current through said alarm signal circuit for maintaining said rotatable connector arm in position for closing said alarm signal switch.
Claim 4
Dependent Claim
12 words
Apparatus according to claim 2 wherein said retaining means is an electromagnet.
Claim 5
Dependent Claim
42 words
Apparatus according to claim 2 wherein said alarm signal circuit includes series connected line switch means responsive to the depression of said brake pedal such that release of said brake pedal opens sail line switch means to interrupt said alarm signal circuit.
Claim 6
Dependent Claim
12 words
Apparatus according to claim 4 wherein said signal means is a light.
Claim 7
Dependent Claim
12 words
Apparatus according to claim 4 wherein said signal means is a horn.
References Cited (Backward Citations)
US1676412A
Cited
GB387941A
Cited
US2156751A
Cited
US2119811A
Cited
US2283277A
Cited
US2820411A
Cited
US3214732A
Cited
US3336575A
Cited
US3304381A
Cited
US3492638A
Cited
US3559788A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-08 | 1976-02-07 | 1976-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-08 | 1980-02-07 | 1980-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-08 | 1984-02-07 | 1984-08-08 | $7700.00 | Window Closed / Lapsed |