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:
Mar. 23, 1993
Filed:
Dec. 20, 1991
Nguyen T Nguyen, San Jose, CA (US);
Sharon Pellerin, San Francisco, CA (US);
Steven P Saneski, Cupertino, CA (US);
Raynet Corporation, Menlo Park, CA (US);
Abstract
A printed circuit board apparatus includes a handle which has an extension plate which extends into an optical switch so as to prevent communication between an optical emitter and optical receiver. To remove the printed circuit board apparatus from its associated rack housing, rotation of the handle is first required which moves the plate and which causes the detector to go HIGH and signal to a telecommunications system that the board is soon to be removed so that a graceful switch can be made from that board to a redundant copy thereof. The printed circuit board apparatus further includes a deflectable lever which contacts to ground the rack housing upon inserting the printed circuit board apparatus into its associated rack housing so as to provide electrostatic discharge protection. The apparatus further includes a face plate which has a generic configuration so as to potentially accommodate any user interface permutation required by any printed circuit board to be inserted into the housing, with application specific labels being applied to each face plate to cover up any holes not providing any user interface information to a craftsperson for the associated printed circuit board. An electromagnetic interference gasket shield is also provided around a circumference of each printed circuit board assembly located in the rack housing.