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. 20, 2004
Filed:
Nov. 08, 2001
Applicant:
Inventors:
Paul J. Duval, Lexington, MA (US);
Vladimir Vayner, Needham, MA (US);
Assignee:
Schlumberger Technologies, Inc., San Jose, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B25B 2/714 ;
U.S. Cl.
CPC ...
B25B 2/714 ;
Abstract
In instruments such as Wien filters, electrostatic and/or magnetic pole pieces must be mounted on and secured to a supporting structure with a very high degree of dimensional precision, usually by brazing. To that end, a fixture is provided for holding the parts to be assembled in precise relationship and to press the pole pieces into engagement with the supporting structure while the securing operation is being carried out. The pressing is accomplished by a gravity-produced force which is, therefore, independent of positional accuracies caused by very high temperatures, such as are encountered during brazing.