Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1980-12-08
1982-09-28
Scott, James R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
200159B, 200329, 200340, 235145R, H01H 1370
Patent
active
043519881
ABSTRACT:
A keyboard assembly comprises a base, a plurality of pressure-operated switches mounted on said base, a keyboard comprising support means overlying the switches and having a plurality of key locations formed therewith, each including a key hinged at one side to the support means and disposed in operative relation to one of the switches, the support means defining a first aperture in each key location to permit movement of the key therethrough, each of the keys including a cantilever switch actuator which is initially formed in a first position on one side of the support means and then rotated so that it extends beneath said key from a toggle hinge on one side thereof to a second aperture in each key location on an opposite side of said key, said actuator being positioned to engage the corresponding switch when the key is depressed, an enlarged end portion of said switch actuating means being received in said second aperture, and coacting therewith during key depressing movement, said switch actuating means being retained in the rotated position beneath its key by said toggle hinge.
REFERENCES:
patent: 3489342 (1970-01-01), Anderson
patent: 3612802 (1971-10-01), Beadle et al.
patent: 3668356 (1972-06-01), Kekas
patent: 3707609 (1972-12-01), Dapot et al.
patent: 3800104 (1974-03-01), Lien et al.
patent: 3823309 (1974-07-01), Caruso
patent: 3839785 (1974-10-01), Boulanger
patent: 4029916 (1977-06-01), Chu
patent: 4032729 (1977-06-01), Koistinen
patent: 4055734 (1977-10-01), Hayden
patent: 4066860 (1978-01-01), Kawasaki
patent: 4092527 (1978-05-01), Luecke
patent: 4096364 (1978-06-01), Lynn et al.
patent: 4127752 (1978-11-01), Lowthorp
patent: 4160886 (1979-07-01), Wright et al.
IBM Tech. Disc. Bull.; J. L. Yarborough, "Nonteasable Switch Actuator", vol. 16, No. 5, pp. 1520, 1521; Oct. 1973.
Cavender J. T.
NCR Corporation
Scott James R.
Sessler Jr. Albert L.
LandOfFree
Keyboard switch assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Keyboard switch assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Keyboard switch assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-400834