US3601796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Accelerator release signal light delay actuator
Assignee: Individual
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Filing: 1970-04-13
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Granted: 1971-08-24
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Expires: 1990-04-13
Abstract
Abstract An accelerator release signal light delay actuator in a vehicle electric circuit to actuate signal lamps on the vehicle after a time interval of 4 to 8 seconds whenever the accelerator is continuously in an engine idle position and the ignition switch is closed. The lamp is operated at less than normal available voltage but will operate at normal available voltage when the vehicle brake is applied. The signal lamp remains lighted until the accelerator pedal is depressed or the ignition switch is opened.
Inventors
- 👤 Rudolf G Mortimer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:58
CPC Classifications
B; B60; B60Q; B60Q1/00; B60Q1/26; B60Q1/44
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
166 words
In a electrical circuit for a motor vehicle having an accelerator and including a DC power source, a light and a normally closed ignition switch; an accelerator release signal light delay actuator for said light comprising a normally open accelerator switch in series with said ignition switch and adapted to close on release of accelerator; a normally nonconducting power transistor adapted when turned on to deliver electric power to said light and energizing same; a time delay device in circuit with said accelerator switch when closed including a resistance and capacitor; a unijunction transistor having a predetermined trigger voltage connected to and controlled by said capacitor, as it progressively charges up to said trigger voltage over a predetermined interval when said accelerator switch is closed; and a silicon controlled rectifier in said circuit interposed between said unijunction transistor and power transistor, whereby when the unijunction transistor fires, said capacitor discharges, developing a voltage pulse which fires the silicon controlled rectifier which turns on said power transistor.
Claim 2
Dependent Claim
166 words
In a electrical circuit for a motor vehicle having an accelerator and including a DC power source, a light and a normally closed ignition switch; an accelerator release signal light delay actuator for said light comprising a normally open accelerator switch in series with said ignition switch and adapted to close on release of accelerator; a normally nonconducting power transistor adapted when turned on to deliver electric power to said light and energizing same; a time delay device in circuit with said accelerator switch when closed including a resistance and capacitor; a unijunction transistor having a predetermined trigger voltage connected to and controlled by said capacitor, as it progressively charges up to said trigger voltage over a predetermined interval when said accelerator switch is closed; and a silicon controlled rectifier in said circuit interposed between said unijunction transistor and power transistor, whereby when the unijunction transistor fires, said capacitor discharges, developing a voltage pulse which fires the silicon controlled rectifier which turns on said power transistor.
Claim 3
Dependent Claim
52 words
In the accelerator release signal light delay actuator of claim 1, a first resistance in said circuit between said power transistor and power source whereby said light is energized by normally reduced voltage determined by the voltage drop across said first resistance and power transistor energizing said light to a predetermined intensity.
Claim 4
Dependent Claim
53 words
In the accelerator release signal light delay actuator of claim 1, said light being a brake light, and a normally open brake switch in circuit with said light whereby closing of said brake switch directly energizes said light to full normal voltage at a predetermined intensity, said power transistor being no longer conducting.
Claim 5
Dependent Claim
54 words
In the accelerator release signal light delay actuator of claim 2, said light being a brake light; and a normally open brake switch in circuit with said light whereby closing of said brake switch directly energizes said light to full normal voltage at a predetermined increased intensity, said power transistor being no longer conducting.
Claim 6
Dependent Claim
23 words
In the accelerator release signal light delay actuator of Claim 1, said time delay being in the range of 4 to 8 seconds.
Claim 7
Dependent Claim
40 words
In the accelerator release signal light delay actuator of claim 1, a resistor between said unijunction transistor and the ground side of said circuit, for determining the extent of voltage pulse delivered on discharging of said capacitor through said resistance.
Claim 8
Dependent Claim
160 words
In an electrical circuit for a motor vehicle having an accelerator and includiNg a DC power source, a light and a normally closed ignition switch; an accelerator release signal light delay actuator for said light comprising a normally open accelerator switch in series with said ignition switch and adapted to close on release of accelerator; a normally nonconducting power transistor adapted when turned on to deliver electric power to said light and energizing same; a time delay device in circuit with said accelerator switch when closed including a unijunction transistor having a predetermined trigger voltage, said time delay device adapted to progressively charge up to said trigger voltage over a predetermined interval when said accelerator switch is closed; and a silicon controlled rectifier in said circuit interposed between said unijunction transistor and power transistor, whereby when the unijunction transistor fires, a voltage pulse is developed through said unijunction transistor which fires the silicon controlled rectifier turning on said power transistor.
Claim 9
Dependent Claim
160 words
In an electrical circuit for a motor vehicle having an accelerator and includiNg a DC power source, a light and a normally closed ignition switch; an accelerator release signal light delay actuator for said light comprising a normally open accelerator switch in series with said ignition switch and adapted to close on release of accelerator; a normally nonconducting power transistor adapted when turned on to deliver electric power to said light and energizing same; a time delay device in circuit with said accelerator switch when closed including a unijunction transistor having a predetermined trigger voltage, said time delay device adapted to progressively charge up to said trigger voltage over a predetermined interval when said accelerator switch is closed; and a silicon controlled rectifier in said circuit interposed between said unijunction transistor and power transistor, whereby when the unijunction transistor fires, a voltage pulse is developed through said unijunction transistor which fires the silicon controlled rectifier turning on said power transistor.
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) | 1974-08-23 | 1975-02-22 | 1975-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-08-23 | 1979-02-22 | 1979-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-08-23 | 1983-02-22 | 1983-08-24 | $7700.00 | Window Closed / Lapsed |