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:
Jan. 25, 1983
Filed:
Aug. 29, 1980
Applicant:
Inventor:
Gilbert N Butterwick, Leola, PA (US);
Assignee:
RCA Corporation, New York, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313102 ; 313181 ;
Abstract
A photomultiplier tube comprises an evacuated envelope having a photoemissive cathode formed on an interior surface of the envelope. An evaporator support assembly is attached to a dynode assembly in such a manner as to align and precisely locate the dynode assembly with respect to the interior wall surface of the tube. The evaporator support assembly provides a structure for attaching an alkali source within the tube in a manner which guarantees mechanical and electrical reproducibility. The evaporator support structure also includes a structure for making contact to the photocathode of the tube.