Wiping elastomeric switch

Details Wiping elastomeric switch Wiping elastomeric switch

1998-07-17

1999-10-19

Gellner, Michael L.

Electricity: circuit makers and breakers

Electric switch details

Contact

200242, 200512, H01H 118

Patent

active

059672978

ABSTRACT:
An elastomeric switch is provided having self cleanings contacts. The switch includes a substrate and a switch actuator configured for reciprocating motion along an axis generally perpendicular to a surface of the substrate. A first switch contact, including a contact surface generally perpendicular to the actuator axis of motion is, carried by the switch actuator. A second switch contact is cantilevered from the surface of the substrate. Reciprocation of the actuator in a first direction toward the substrate acts to force the first contact against the distal end of the second contact. The two contacts are deflected together as result of further reciprocation of the actuator in the first direction. As the contacts are deflected, the distal end of the second contact is scraped across the contact surface of the first contact, thereby removing contaminants and other debris from the contact surface of the first contact. As the contacts are deflected, the second contact is mechanically biases against the first contact to eliminate contact bounce.

REFERENCES:
patent: 4436970 (1984-03-01), Swisher
patent: 4716262 (1987-12-01), Morse
patent: 4839474 (1989-06-01), Hayes-Pankhurst et al.

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