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:
Oct. 02, 2001
Filed:
Dec. 18, 2000
Genichi Kimizuka, Kawaguchi, JP;
Enplas Corporation, , JP;
Abstract
A highly durable, inexpensive valve seat and valve unit are achieved by using a synthetic resin for forming the valve seat. The synthetic resin valve seat is equipped with a first valve aperture and a second valve aperture for inflow, and a third valve aperture for outflow. At least either the first valve aperture or the second valve aperture is set in communication with the third valve aperture through a communication hole of a movable valve seat, or the first and second valve apertures are closed by the movable valve seat. A protuberance that slidably contacts the movable valve seat is formed on a surface of the synthetic resin valve seat that opposes the movable valve seat and on the opening edges of at least the first valve aperture and the second valve aperture such that the protuberance surrounds the first valve aperture and the second valve aperture.