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:
Sep. 11, 1979
Filed:
Apr. 10, 1978
Applicant:
Inventor:
John A Charnock, Toronto, CA;
Assignee:
ERCO Industries Limited, Islington, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05B / ;
U.S. Cl.
CPC ...
13 1 / ;
Abstract
In joining together electrode segments through nipples for use in electric furnaces, certain designated threads adjacent the interface of the segments are inactivated so that only those threads tending to self-tighten with increasing temperature are active. In this way, any tendency for the joint to loosen upon heating is avoided and all the stress is borne by self-tightening threads.