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:
Mar. 20, 1984
Filed:
Jan. 05, 1982
James A Madden, Gainesville, FL (US);
General Electric Company, Gainesville, FL (US);
Abstract
An apparatus is disclosed for providing a circumferential groove in a thin-walled cylindrical metal object such as the can or container (A) for a battery cell. As each object moves along a path (51, 90) defined between guide rails (42, 44, 46, 48, 88) and star wheels (56, 58, 78), it is supported on a spring-biased plunger (102-112) positioned in a rotatable support table (96-100). In the preferred embodiment, a groove-forming mandrel (132-138) is gradually inserted into the object as it moves along the path so that a radially extending shoulder (134) of the mandrel engages the lip of the open end of the object before the object is contacted by a groove-forming wheel (158, 160) which is rotated adjacent the path. A tapered surface (138) on the grooving mandrel and a radially extending flange (160) on the grooving wheel cooperate to form a circumferentially extending groove in the wall of the object while the object rotates. Following formation of the groove, the mandrel is withdrawn from the object. A corresponding method of forming such a circumferential groove also is disclosed.