Keyboard auxiliary bearing

Details Keyboard auxiliary bearing Keyboard auxiliary bearing

1984-08-03

1986-03-04

Marcus, Stephen

Electricity: circuit makers and breakers

Electric switch details

Actuators

400490, H01H 312

Patent

active

045741719

ABSTRACT:
An auxiliary bearing for use in a keyboard to prevent binding of keys having irregularly-shaped keycaps. The irregular keycap is mounted on a plunger which reciprocates in a main switch housing. The switch housing is attached to the keyboard. The keycap also has a coupler attached to its underside. The coupler engages a bearing in the form of a sleeve which supports the coupler along a portion of its length sufficient to preclude the coupler from tilting in the sleeve. The bearing member is mounted on an auxiliary housing which in turn is attached to the keyboard. The connection of the bearing to the auxiliary housing permits the bearing to shift laterally on the housing to permit alignment of the coupler and sleeve despite variations in the auxiliary housing location and the keycap location. But the bearing is prevented from tilting or skewing in the auxiliary housing by a set of cooperating hooks on the housing and bearing.

REFERENCES:
patent: 3916150 (1975-10-01), Abernethy et al.
patent: 3962556 (1976-06-01), Kravchuck
Gaunce, S. A., "Dogleg Keybutton Guide Design"--IBM Tech. Disclosure, Mar. 1984, vol. 26, No. 10A, pp. 4976-4977.

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