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. 20, 1982
Filed:
Aug. 28, 1980
Applicant:
Inventor:
John P Snow, Sagamore Hills, OH (US);
Assignee:
Houdaille Industries, Inc., Ft. Lauderdale, FL (US);
Primary Examiner:
Int. Cl.
CPC ...
F16K / ;
U.S. Cl.
CPC ...
137512 ; 1375123 ; 13751627 ; 137539 ; 13751629 ; 251358 ;
Abstract
A ball check valve having a body with a through passageway having an internally restrictive frustoconical seat is provided with a frustoconical metallic backup member having a different cone angle than the seat and a large diameter ball having a maximum diameter greater than the maximum diameter of the backup member, the backup member having a contoured large diameter axial end face for receipt of a portion of the ball such that a seal is provided between the seat and the ball and between the backup member and the seat and means urging the ball against the backup member large diameter axial end and the backup member against the seat.