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:
Dec. 28, 2004
Filed:
Nov. 08, 2002
Hamamatsu Photonics K.K., Hamamatsu, JP;
Abstract
A hermetically sealed vessel for a photomultiplier tube made of a side tube ( ), a faceplate and a stem plate. The side tube is made by assembling a plurality of plates ( ) with a curled end. An end face ( ) on a corner ( ) at an open end of the side tube facing the faceplate is at a higher level than the faces other than the end face ( ). When being heated, the end face ( ) is deeply embedded into the faceplate, which enhances the joint between the side tube and the faceplate. Because the whole open end of the side tube ( ) facing the faceplate is embedded into the faceplate, the joint between the side tube ( ) and the faceplate is ensured, thereby improving throughput for the joining operation. The side tube is readily integral with the faceplate, which contributes to enhanced hermeticity of the sealed vessel.