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. 11, 1989
Filed:
Dec. 15, 1987
Applicant:
Inventor:
Robert H Johns, Natrona Heights, PA (US);
Assignee:
Allegheny Ludlum Corporation, Pittsburgh, PA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01K / ; G01K / ;
U.S. Cl.
CPC ...
374152 ; 136234 ; 266 99 ; 337298 ; 374167 ; 374139 ;
Abstract
A thermocouple selection switch for monitoring thermocouples positioned within tunnel furnace cars allows a plurality of thermocouples to be monitored, while, at the same time, avoiding the requirement of precisely aligning the tunnel furnace car with an external probe. The selection switch is comprised of a plurality of switch stations, each of which contain longitudinally extending contact rails which when contacted with an external probe at any point along the length of the contact rails establishes electrical contact with opposite sides or wires of thermocouple.