Variable time delay apparatus for controlling the start of a vehicle
First Claim
1. 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.
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Accused Products
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.
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Citations
12 Claims
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1. 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:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. 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:
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relay means for selectively engaging and disengaging said braking means; adjustable time delay means for setting said period of delay; and switch means for selectively causing said relay means to engage said brake means and to disengage said brake means after said period of delay. .Iaddend. .Iadd.13. The apparatus of claim 12, wherein said relay means is an electrically operated solenoid. .Iaddend. .Iadd.14. The apparatus of claim 12, 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. .Iaddend. .Iadd.15. The apparatus of claim 12, wherein said adjustable time delay means is a digital means. .Iaddend. .Iadd.16. The apparatus of claim 15, wherein said digital means comprises; pulse generating means for generating pulses; counter means for counting said pulses; time switch means for setting said period of 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. .Iaddend. .Iadd.17. The apparatus of claim 12, wherein said adjustable time delay means is an analog means. .Iaddend. .Iadd.18. The apparatus of claim 17, wherein said analog means further comprises; charging means; a variable resistance means for setting said period of delay; said charging means charging through said variable resistance means causing said period of delay; and level detection means for disengaging said relay means after said charging means has been charged. .Iaddend. .Iadd.19. The apparatus of claim 18, wherein said variable resistance means is a variable resistor. .Iaddend. .Iadd.20. The apparatus of claim 19, wherein said charging means is a capacitor and said resistor is in parallel electrically with said capacitor. .Iaddend.
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Specification