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:
Nov. 22, 2016
Filed:
Dec. 06, 2012
Applicant:
Federal-mogul Burscheid Gmbh, Burscheid, DE;
Inventors:
Assignee:
Federal-Mogul Burscheid GmbH, Burscheid, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M 3/38 (2006.01); G01M 13/00 (2006.01);
U.S. Cl.
CPC ...
G01M 3/38 (2013.01); G01M 13/00 (2013.01); G01M 13/005 (2013.01);
Abstract
A method and an apparatus for measuring the light gap tightness of a piston ring, that is provided with a joint and produced so as to be non-round by clamping the open piston ring, while substantially closing the joint, by way of an accessory device in the circumferential direction, and by exerting a defined force in the region of at least one of the joint ends of the piston ring in the direction of a wall of the accessory device, wherein optical means are used to establish whether the joint region of the piston ring which is subjected to the action of the force is seated against the wall of the accessory device in a light-tight manner.