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:
Aug. 12, 2008
Filed:
Sep. 19, 2007
Applicant:
Henry J. Gohlke, Houston, TX (US);
Inventor:
Henry J. Gohlke, Houston, TX (US);
Assignee:
Rectorseal Corporation, Houston, TX (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B29C 45/14 (2006.01); B29C 45/16 (2006.01); F16J 3/02 (2006.01); F16K 24/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
In some embodiments, a process for manufacturing a diaphragm for an air admittance valve includes disposing a first center disk into a first cavity of a first mold, the first center disk includes a hollow stem. A material is provided into the first mold, through the hollow stem and laterally outwardly beyond a perimeter of the first center disk. The material is allowed to harden to form a lateral membrane coupled to the first center disk and extending laterally beyond a perimeter of the first center disk.