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:
Dec. 03, 1991
Filed:
Mar. 21, 1990
Matsuoka Noriyuki, Tokyo, JP;
Yamaichi Electric Mfg. Co., Ltd., Tokyo, JP;
Abstract
An IC socket has an IC accommodating portion, at least one ejection lever disposed in the IC accommodating portion, and a socket board for supporting a generally central portion of the lever in such a manner as to be able to effect a seesaw motion. An IC is supported by a push-up lever portion on one end of the lever for effecting the seesaw motion. A push-down force is exerted on the push-down lever portion on the other end for effecting a seesaw motion of the lever, thereby to move up the push-up lever portion on the one end in order to push up the IC. The IC socket is characterized in that the push-up lever portion is provided with a small projection on a lower surface of the push-up lever portion and a cone-shaped concave portion is formed at a position corresponding to the small production in the socket board so that the lever is correctly positioned with respect to the socket board.