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. 25, 1997
Filed:
Jun. 19, 1996
Applicant:
Inventor:
John W Sims, Weedsport, NY (US);
Assignee:
Welch Allyn, Inc., Skaneateles Falls, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445 49 ; 205666 ;
Abstract
A one piece electrode is disclosed for use in miniature and subminiature lamps having a large diameter post section and a smaller diameter lead-in section. The lead-in section is formed by an electrochemical process from a wire that has an outer diameter equal to the desired post diameter. A smooth evenly tapered transition section between the post and lead-in sections is created during the etching process which permits heat to pass through the electrode at a controlled and predictable rate.