Electricity: circuit makers and breakers – Electric switch details – Actuators
Reexamination Certificate
2006-04-04
2010-06-29
Leon, Edwin A. (Department: 2833)
Electricity: circuit makers and breakers
Electric switch details
Actuators
Reexamination Certificate
active
07745751
ABSTRACT:
A member for a push-button switch has key top members positioned close to each other through a distance of 1.5 mm or shorter at low cost and with high yield. The member has multiple key top members having resin key top cores and thermoplastic films covering the key top cores other than the lower surfaces thereof. The key top members are formed so that an interval between at least one set of adjacent key top members is 1.5 mm or shorter. In the key top members adjacent to each other through a distance of 1.5 mm or shorter, the maximum thickness of the thermoplastic films covering the key top cores is within the range of 75 to 350 μ, and the ratio of the minimum thickness of the thermoplastic films covering the key top cores to the maximum thickness is within the range of 0.4 to 0.9.
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The above references (exept U.S. Patent 6,571,457, which corresponds to U.S. Publication 2001001786) were cited in a Dec. 19, 2008 Supplementary European Search Report of the counterpart European Patent Application No. 06 731 584.6-2214 (PCT/JP2006/307637).
Egawa Toshihiko
Kuwabara Tomohiko
Nagasawa Tsutomu
Takahashi Masahide
Cowan Liebowitz & Latman P.C.
Leon Edwin A.
Montague Mark
Shin-Etsu Polymer Co., Ltd
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