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:
Sep. 05, 2000
Filed:
Apr. 26, 1999
Applicant:
Inventors:
Gregg T Black, Livonia, MI (US);
Michael C Lefebvre, West Bloomfield, MI (US);
Assignee:
DaimlerChrysler Corporation, Auburn Hills, MI (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01M / ; G01M / ; F02M / ;
U.S. Cl.
CPC ...
73 40 ; 73 492 ; 73 37 ;
Abstract
A method and apparatus for leak testing a first and a second cavity of a part. A fixture is provided for engaging and individually sealing the cavities of the part. Pressurized fluid from a pressure source is introduced into each of the cavities. The first cavity is allowed to stabilize and its leak rate is measured using a pressure-measuring device. The first cavity is then vented. Upon stabilization of the second cavity, the leak rate thereof is similarly measured. The second cavity is then also vented. The leak rates are then evaluated to determine if a leak is present in either of the cavities.