Electricity: circuit makers and breakers – Electric switch details – Actuators
Patent
1992-12-18
1993-12-07
Recla, Henry J.
Electricity: circuit makers and breakers
Electric switch details
Actuators
200329, 200344, 200517, 200521, 400490, 4004912, H01H 1370
Patent
active
052685454
ABSTRACT:
A low profile tactile keyswitch including a horizontally positioned elastic column spring which buckles under an axial load to provide a tactile feel for the keyswitch. The ends of the spring are maintained between two spring holders which are urged together as the keybutton is depressed. Stabilizing arms pivotally attached to the keybutton are used to stabilize the keybutton and also to carry extensions which engage the spring holders to move them together as the keybutton is depressed. The keyswitch is operable to be placed in an inactive configuration in which the keybutton is lowered without placing the spring under added compression.
REFERENCES:
patent: 3624332 (1971-11-01), Van Benshoten
patent: 4118611 (1978-10-01), Harris
patent: 4433225 (1984-02-01), Cowles
patent: 4580022 (1986-04-01), Oelsch et al.
patent: 4902862 (1990-02-01), Oelsch et al.
patent: 5012055 (1991-04-01), Matsui
IBM Technical Disclosure Bulletin, vol. 17, No. 11, Apr. 1975, pp. 3377-3378, entitled "Low-Force Displacement Capacitor Actuator For Calico Keyboards" by R. H. Harris.
IBM Technical Disclosure Bulletin, vol. 31, No. 7, Dec. 1988, pp. 304-306, entitled "Keybutton Stabilizer" by D. A. Bruner.
Barrett Glen
Lexmark International Inc.
McArdle, Jr. John J.
Recla Henry J.
LandOfFree
Low profile tactile keyswitch does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low profile tactile keyswitch, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low profile tactile keyswitch will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2017379