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:
May. 30, 1978
Filed:
Aug. 05, 1974
Verne P Donner, Palatine, IL (US);
Deltrol Corp., Bellwood, IL (US);
Abstract
The ball in a ball type check valve is guided by a wire form ball cage. The cage is formed of two spring wire pieces each having two ball guiding legs, attached by cross members formed with interfitting loops which hold the pieces together by spring tension. Each guiding leg is formed with a reverse bend extending outwardly and then rearwardly along the valve body walls, this positioning the guide in the valve body. The cage is formed larger than the inside of the valve body in which it fits and also serves as a retainer for the ball valve spring. The assembly of the cage, spring and ball valve is inserted through the outlet port and the cage expands behind a shoulder in the body, locking it in place by spring tension.