US4467219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable time delay apparatus for controlling the start of a vehicle
Assignee: Dedenbear Products Inc
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Filing: 1982-06-07
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Granted: 1984-08-21
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Expires: 2002-06-07
Abstract
Abstract A circuit for providing an adjustable period of delay in a vehicle which is started by engaging the engine of the vehicle and a brake means, then disengaging the brake means after the period of delay, has a relay for selectively engaging and disengaging the brake. A variable time delay provides the period of delay. A switch selectively causes the relay to engage the brake and then to disengage the brake after the period of delay. A safety activation means prevents the relay from engaging the brake means in the absence of the switch selected to cause the relay to engage the brake means.
Inventors
- 👤 Dennis Reid
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:56
CPC Classifications
H; H01; H01H; H01H43/00; H01H43/02; H01H43/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
129 words
A variable time-delay circuit for controlling the start of a vehicle after a preset period of delay wherein said vehicle is started by engaging the engine of said vehicle and braking means to hold said vehicle, then disengaging said braking means after said period of delay, said apparatus, having electrical power supplied thereto, comprising: relay means for selectively engaging and disengaging said braking means; adjustable time delay means for setting said period of delay; switch means for selectively causing said relay means to engage said brake means and to disengage said brake means after said period of delay; and safety activation means preventing said relay means from engaging said braking means in the absence of said switch means selected to cause said relay means to engage said brake means.
Claim 2
Dependent Claim
129 words
A variable time-delay circuit for controlling the start of a vehicle after a preset period of delay wherein said vehicle is started by engaging the engine of said vehicle and braking means to hold said vehicle, then disengaging said braking means after said period of delay, said apparatus, having electrical power supplied thereto, comprising: relay means for selectively engaging and disengaging said braking means; adjustable time delay means for setting said period of delay; switch means for selectively causing said relay means to engage said brake means and to disengage said brake means after said period of delay; and safety activation means preventing said relay means from engaging said braking means in the absence of said switch means selected to cause said relay means to engage said brake means.
Claim 3
Dependent Claim
14 words
The apparatus of claim 1, wherein said relay means is an electrically operated solenoid.
Claim 4
Dependent Claim
33 words
The apparatus of claim 1 further comprising filtering means for filtering the electrical power supplied to said apparatus; and voltage regulation means for regulating the voltage of the electrical power to said apparatus.
Claim 5
Dependent Claim
21 words
The apparatus of claim 1, wherein said safety activation means is interposed between said relay means and the electrical power thereto.
Claim 6
Dependent Claim
13 words
The apparatus of claim 4, wherein said safety activation means comprises a switch.
Claim 7
Dependent Claim
50 words
The apparatus of claim 4, wherein said safety activation means comprises: an electrically operated solenoid; a relay contact, operable by said solenoid and disposed between said relay means and the power thereto; and a capacitor in parallel electrically with said solenoid and disposed in series electrically with said switch means.
Claim 8
Dependent Claim
15 words
The apparatus of claim 1, wherein said variable time delay means is a digital means.
Claim 9
Dependent Claim
67 words
The apparatus of claim 7, wherein said digital means comprises: pulse generating means for generating pulses; counter means for counting said pulses; time switch means for setting said period or delay; comparator means for comparing the setting of said time switch means with said counter means and for producing a signal when said setting and said counting are equal; and said signal for disengaging said relay means.
Claim 10
Dependent Claim
15 words
The apparatus of claim 1, wherein said variable time delay means is an analog means.
Claim 11
Dependent Claim
55 words
The apparatus of claim 9, wherein said analog means further comprises: charging means; a variable resistor, having a variable resistance for setting said period of delay; said charging means charging through said variable resistor causing said period of delay; and level detection means for disengaging said relay means after said charging means has been charged.
Claim 12
Dependent Claim
21 words
The apparatus of claim 10, wherein said charging means is a capacitor and said resistor in parallel electrically with said capacitor.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-08-21 | 1988-02-20 | 1988-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-08-21 | 1992-02-20 | 1992-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-08-21 | 1996-02-20 | 1996-08-21 | $7700.00 | Window Closed / Lapsed |