A key switch utilizing a buckling compression spring to move a switch actuator mechanism includes a cylindrical core of resilient material located within an opening formed by the coils of the compression spring to attenuate the acoustical energy generated by the buckling and unbuckling action of the spring.
申请公布号
US4859820(A)
申请公布日期
1989.08.22
申请号
US19880175974
申请日期
1988.03.31
申请人
AMERICAN TELEPHONE AND TELEGRAPH COMPANY,;AT&T INFORMATION SYSTEMS INC.
发明人
GOTFRYD, CASIMER;KAY, STEPHEN L.;KLOTZ, HARTLAND P.;WENTZEL, ROBERT M.
