Keyswitch design

Details Keyswitch design Keyswitch design

1982-08-25

1984-05-22

Shepperd, John W.

Electricity: circuit makers and breakers

Electric switch details

Actuators

H01H 312

Patent

active

044503326

ABSTRACT:
An improved keyswitch assembly comprises a housing, a plunger which is spring loaded into a first position, and a channel in the housing through which the plunger can slide from the first position to a second position. A keytop is coupled to the other end of the plunger. The plunger contains a tapered shaft portion. A corresponding frustrum shaped interior portion is provided in the channel which is adapted to mate with the tapered shaft when the plunger is in the first position. This structure eliminates excessive movement of the plunger in a lateral direction within the channel. The tapered shaft portion can be fabricated with a noncircular cross-section in order to prevent rotation of the plunger within the channel. In an alternate embodiment, tapered ribs are provided on the plunger along with corresponding tapered grooves in the channel.

REFERENCES:
patent: 540949 (1895-06-01), Clark
patent: 1273749 (1918-07-01), Demarest
patent: 1934988 (1933-11-01), May
patent: 3809838 (1974-05-01), Coppola
patent: 4013856 (1977-03-01), Joss et al.
patent: 4169974 (1979-10-01), Peers-Trevarton
patent: 4227163 (1980-10-01), Barnoski

Affiliated with

Also associated with

Rating

Keyswitch design does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Keyswitch design, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyswitch design will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1479543