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:
Jun. 04, 2002
Filed:
Aug. 13, 1999
Applicant:
Inventors:
Nathan R. Kane, Somerville, MA (US);
Brian R. Tranter, High Wycombe, GB;
Assignee:
PerkinElmer, Inc., Wellesley, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B21C 3/730 ;
U.S. Cl.
CPC ...
B21C 3/730 ;
Abstract
A method of making a folded metal bellows wherein an n-sided mandrel is positioned within a metal tube at an initial position. A convolution is formed by: axially moving and turning the mandrel with respect to and within the tube from the initial position to a second position. The mandrel is then fixed to the tube and driven towards the initial position while turning the mandrel (and the tube).