Seat cushion switch with delay circuit
First Claim
1. A weight activated seat cushion electric switch comprising:
- a resilient compressible apertured separator having a slot;
an electrically conductive mat on either side of said separator cooperating with said separator wherein pushing on said mats creates electric contact between said mats;
a protective sheet covering both said conductive mats;
an electronic delay circuit fitted into said slot;
said electronic delay circuit further comprising an electric connection to at least one conductive mat;
said elecronic delay circuit functioning to provide a delayed open circuit signal after said conductive mats are pushed apart by said resilient compressible apertured separator.
2 Assignments
0 Petitions
Accused Products
Abstract
A general purpose time delay weight activated switch is disclosed. A foam seat cushion contains wire mesh electrical switch closing contacts. Sitting or rising from the cushion opens and closes the switch. A solid state adjustable timer is also imbedded in the cushion, or adjacent to the cushion. Its purpose is to delay the opening of the switch several seconds. An ideal application for the device is to automaticlly lock an emergency brake in a delivery van. The driver leaving the parked vehicle automatically locks the parking brake or vehicle brakes when leaving the vehicle when the present invention is combined with a parking brake or vehicle brake locking means. The invention'"'"'s delay circuit allows the driver to bounce up and down on a bumpy road without setting off the switch. Other uses for this special purpose seat cushion include railroad, farm equipment, industrial and power boat safety systems.
26 Citations
5 Claims
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1. A weight activated seat cushion electric switch comprising:
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a resilient compressible apertured separator having a slot; an electrically conductive mat on either side of said separator cooperating with said separator wherein pushing on said mats creates electric contact between said mats; a protective sheet covering both said conductive mats; an electronic delay circuit fitted into said slot; said electronic delay circuit further comprising an electric connection to at least one conductive mat; said elecronic delay circuit functioning to provide a delayed open circuit signal after said conductive mats are pushed apart by said resilient compressible apertured separator. - View Dependent Claims (2, 3, 4)
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5. A weight activated seat cushion electric switch comprising:
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a resilient compressible apertured separator having a slot in one corner; an electrically conductive mat on either side of said separator cooperating with said separator wherein pushing on said mats creates electric contact between said mats; a protective sheet covering both said conductive mats; an electronic delay circuit fitted into said slot; said electronic delay circuit further comprising an electric connection to one conductive mat; said electronic delay circuit functioning to provide a delayed open circuit signal after said conductive mats are pushed apart by said resilient compressible apertured separator.
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Specification