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:
Oct. 22, 1991
Filed:
May. 21, 1991
Applicant:
Inventor:
Dennis E Persyk, Barrington, IL (US);
Assignee:
Siemens Gammasonics, Inc., Hoffman Estates, IL (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01T / ; G01T / ;
U.S. Cl.
CPC ...
25036303 ; 250368 ; 250367 ; 25036302 ;
Abstract
Photomultiplier tubes are bonded using silicone gel, which cures to a soft state. Small glass or plastic spheres are placed in the gel before it has cured so as to weaken it and make it easier to shear when the photomultiplier tubes are twisted or tipped. The resulting bond is mechanically and optically adequate but not so strong as to make it impossible to remove a photomultiplier tube which must be replaced.