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:
Nov. 18, 1997
Filed:
Mar. 22, 1994
Applicant:
Inventors:
Sai Hoi Tsao, Ottawa, CA;
Forest Shih-Sen Chien, Sanchung, TW;
Assignee:
Industrial Technology Research Institute, Hsinchu, TW;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01H / ;
U.S. Cl.
CPC ...
361191 ;
Abstract
A versatile switching module to control the switching operation of multiple relay switches and to monitor the status of each relay includes a driving card and multiple relay cards, each relay card in turn including a number of relays, with each relay representing a testing channel made up of three testing terminals. In one embodiment, one driver card may be used to control four relay cards, each relay card having sixteen relays and each relay having four single-pole double-throw switches.