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Class Information
Number: 200/344
Name: Electricity: circuit makers and breakers > Electric switch details > Actuators > Push button > Mechanism to keep key level
Description: Subject matter wherein structure is included to prevent tilting or sideways motion of the push button when other than a direct straight-line force is applied.










Patents under this class:
1 2 3 4 5 6 7

Patent Number Title Of Patent Date Issued
5117076 Quieting device for keytop leveling mechanisms May. 26, 1992
5066842 Key top Nov. 19, 1991
5003140 Long keybutton stabilizer Mar. 26, 1991
4998318 Knob device Mar. 12, 1991
4985603 Electric switch having reduced actuator play Jan. 15, 1991
4918271 Pushbutton type keyboard switch Apr. 17, 1990
4902862 Keyboard switch device for facilitating removal and replacement of push buttons Feb. 20, 1990
4885443 Sealed backlit switch assembly Dec. 5, 1989
4771146 Keyboard key top mounting structure Sep. 13, 1988
4764770 Stabilized molded rubber keyboards Aug. 16, 1988
4709128 Easily positionable keyboard Nov. 24, 1987
4626639 Apparatus for stabilizing a keyboard switch assembly against cantilever movement Dec. 2, 1986
4580022 Keyboard key with means for supporting large key surface Apr. 1, 1986
4574171 Keyboard auxiliary bearing Mar. 4, 1986
4535210 Keyswitch stabilizing device Aug. 13, 1985
4475832 Parallel guide for push-button switches with multiple buttons Oct. 9, 1984
4468145 Keyboard space bar stabilizer Aug. 28, 1984
4453063 Keyswitch configuration with torque rod holder Jun. 5, 1984
4433225 Keytop levelling mechanism Feb. 21, 1984
4392037 Stabilized button for an electrical keyboard Jul. 5, 1983
4384796 Keyboard space bar stabilizer May. 24, 1983
4311893 Push button assembly Jan. 19, 1982
4181826 Dome switch actuating apparatus Jan. 1, 1980

1 2 3 4 5 6 7










 
 
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