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:
Jul. 05, 1988
Filed:
May. 23, 1986
Semyon Brayman, Southfield, MI (US);
Vladimir Sheyman, Birmingham, MI (US);
Antares Engineering, Inc., Madison Heights, MI (US);
Abstract
Apparatus is disclosed for detecting minute leaks in wheel rims, including a bell jar cover lowered over a rim previously placed in position on a support member, engagement of surfaces on the cover and support member with the tire bead flanges of the wheel rim creating a separate hermetically sealed interior and exterior test chamber, each defined in part by the periphery of the wheel rim. These testing chambers are first evacuated, and the exterior chamber then pressurized with a gas composed at least in part of a trace gas, while the interior chamber is placed at or below atmopsheric pressure. A scavenging gas flow is initiated through the interior chamber after a brief delay, which flow is collected and directed to a trace gas sensor to detect the presence of trace gas in the interior chamber resulting from leakage through the wheel rim. In order to eliminate residual trace gas, each test chamber is evacuated and purged with air flow prior to opening of the housing and removal of the wheel rim tested.