Weight or ambient pressure-responsive mechanical pressure switch
Patent 4401896 Issued on August 30, 1983. Estimated Expiration Date: 
May 26, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 26, 2001. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 2780693 3048748 3209089 3662229 3723684 3830991 3920940 Electrical switch for use by the disabled Keyboard strip switch assembly having multifurcated conductive screen contact with contact cleaning wiping-action Scales annunciator InventorsApplicationNo. 06/266714 filed on 05/26/1981US Classes:307/118, Fluid pressure, density, level, velocity or humidity200/83Z, Manual actuating means200/85R, WEIGHT200/86R, Treads340/666, Weight361/188Variable impedanceExaminersPrimary: Tolin, G. P.Attorney, Agent or FirmInternational ClassesH01H 3/14 (20060101)H01H 3/02 (20060101) AbstractAn electrically non-conductive separator having a hole formed therethrough is interposed between a pair of switch contacts having a modulus of elasticity. A cover of electrically non-conductive flexible material covers the switch contacts. Electrically conductive leads are electrically connected to, and extend from, the switch contacts. The positions of the switch contacts relative to each other are determined by differences in pressure and control the operation of an electrical circuit electrically connected to the leads to operate a circuit to perform a function.Field of SearchFluid pressure, density, level, velocity or humidity | |
