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. 04, 1986
Filed:
Sep. 09, 1985
Vernon F Thompson, Crestwood, MO (US);
Tomco, Inc., St. Louis, MO (US);
Abstract
A test fixture for EGR valves has a support with a flat upper surface with a well opening through it spaced from the boundaries of the upper surface. A conduit, open at two ends, communicates with the atmosphere at one end and with the well intermediate its ends. A venturi tube communicates with the other end of the conduit. The venturi tube has a throat portion and an aspirating line communicating at one end with the throat portion of the venturi tube and at the other with a vacuum fitting for connection to the vacuum fitting of an EGR valve resting on the flat upper surface of the fixture. A pressure fitting is connected to the venturi tube to accommodate a complementary fitting from a source of gas under pressure. The venturi tube and conduit are dimensioned and arranged to deliver a vacuum to the vacuum fitting and a pressure to the well of a magnitude at which the EGR valve will operate normally if the EGR valve is in operating condition.