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:
Jun. 23, 1998
Filed:
Sep. 30, 1996
Robert W Smetters, Schaumburg, IL (US);
Ted J Makowan, Schaumburg, IL (US);
Val-Matic Valve and Manufacturing Corp., Elmhurst, IL (US);
Abstract
An improved seat for air valves and combination air release and air valves is provided. The improved seal for an air valve has a resilient member with a top surface and a bottom surface and a through hole therebetween; a circular raised bead positioned on the top surface having a diameter larger than that of the through hole and a circumferential slot arranged in the through hole; and having a diameter larger than that of the through hole so that a lip is formed between the bottom surface and the circumferential slot. In addition, a seal for an air valve having a resilient member with a top surface and a bottom surface and a through hole therebetween; a circular raised bead positioned on the bottom surface, the circular raised bead having a diameter larger than that of the through hole; and a notch circumscribing the through hole and having a diameter larger than that of the through hole so that contact surface is formed between the notch and the through holes is also provided. The seal is preferably a hard elastomer of up to approximately 90 durometer.