Dual lateral switch device
Patent 4301337 Issued on November 17, 1981. Estimated Expiration Date: 
March 31, 2000. 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.
March 31, 2000. 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 ReferencesKeyboard assembly with overlapped flexible printed circuit cable switch Membrane switch apparatus having sequential bridging contact arrangement Membrane keyboard apparatus having common apertured electrode, aperture inserted electrodes and conductive bubble contactors Keyboard switch assembly having foldable printed circuit board, integral spacer and preformed depression-type alignment fold Patent #: 4066851 InventorApplicationNo. 06/135386 filed on 03/31/1980US Classes:200/5A, With independent operators200/518, Plural actuators operate single switch84/658, Force or velocity responsive84/670, Constructional details84/690, With variable resistance selector84/720, Keyswitch structure902/21With specific data output means or indicatorExaminersPrimary: Scott, J. R.Attorney, Agent or FirmInternational ClassesH01H 13/702 (20060101)H01H 13/70 (20060101) H01H 1/02 (20060101) H01H 1/029 (20060101) AbstractA dual switch apparatus has two switches simultaneously actuated in response to a single touch force where at least one of the switches has a pressure responsive variable contact resistance. A first support member has a first and a second conductor disposed thereon and a second support member has a third and a fourth conductor disposed thereon so that the first and third conductors and the second and fourth conductors have mirror image conductor patterns. A semiconducting composition layer is disposed to cover at least one of the four conductors. The first and second support members are positioned facing one another with the first and third conductors and the second and fourth conductors transversely aligned so that a transverse force causes the first and third conductors and the second and fourth conductors to move into electrically conducting relationship. A spacer maintains the first and second support members in normally spaced relationship. A utilization circuit may be coupled across each of the first and third and second and fourth conductors. In one embodiment, the first conductor has two electrically isolated contact members with interdigiting fingers with the third conductor acting as a shunt. | |
