The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 1991
Filed:
Sep. 27, 1989
Noriyuki Matsuoka, Tokyo, JP;
Junji Ishida, Tokyo, JP;
Yamaichi Electric Mfg. Co., Ltd., Tokyo, JP;
Abstract
An IC socket includes a socket body having a plurality of contacts arranged in such a manner as to contact terminal members of an IC package. A contact shutter member is vertically movably mounted on the socket body and adapted, when lowering, to push the contacts against their elastic property so that the contacts will be displaced backward and downward to remove the contact relation. A contact shutter device in the IC socket is characterized by each of the contact having a contact piece portion extending upward from a fixedly embedded portion thereof through a curved spring piece, a cantilever arm extending backward from the contact piece portion, the cantilever arm being provided with a pressing force receiving portion formed on a free end portion thereof and pushed down by the contact shutter member, and a push-start point of the pressing force receiving portion by the contact shutter device being set to a position which is higher than a contact point of the contact piece portion with respect to the terminal members.