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. 17, 1998
Filed:
Aug. 24, 1995
Applicant:
Inventors:
Bernard John Gane, Harpenden, GB;
Laurence Albert Fletcher, Barton Le Clay, GB;
Assignee:
MTL Instruments Group plc, Bedfordshire, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H05K / ;
U.S. Cl.
CPC ...
361765 ; 361673 ; 338195 ; 338308 ;
Abstract
An electrical safety barrier for use as a protective device between a hazardous area and a non-hazardous area has a substrate of ceramic material which carries thick film printed resistors and other surface mounted safety components, such as Zener diodes. By using such hybrid circuit technology one can achieve a very slim barrier, reduce the number of soldered connections usually required, and obtain high power density due to the high thermal conductivity of the ceramic. The ceramic substrate is encapsulated within a housing which includes a ground shoe assembly to enable the barrier to be mounted on a rail.