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, 1992
Filed:
Feb. 28, 1991
Michael L Nowicki, House Springs, MO (US);
Dema Engineering Company, St. Louis, MO (US);
Abstract
This selector valve (20) may be used to control flow from a chemical supply (22) and a proportioner (14) attached to a faucet (12). The valve includes a valve body (30) having a central passage (32) receiving a rotatable stem assembly (38) having a stem (40) provided with interior passages (94, 96). The stem passages (94, 96) selectively communicate between an inlet line (18) and any one of a plurality of transverse intermediate passages (44, 46 and 48), or a transverse outlet passage (50), and an outlet line (16) depending on the rotational position of said stem (40). Each intermediate passage (44, 46 and 48) includes a metering adaptor (54, 56 and 58) and the outlet passage (50) also includes a metering adaptor (60). When the stem passages (96) is aligned with the metering adaptor (54, 56 and 58) of an intermediate passage (44, 46 and 48) fluid flows through that adaptor by way of connecting passages (102, 100, 104 and 87) to the outlet line (16). When the stem passage (96) is aligned with the metering adaptor (60) of the outlet passage (50) fluid flows through that adaptor directly to the outlet line (16).