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, 1995
Filed:
Jan. 29, 1993
Hans G Schick, Anacortes, WA (US);
Upchurch Scientific, Inc., Oak Harbor, WA (US);
Abstract
A multiport selection valve which is biocompatible and can be used at pressures of up to 2000 psi is described. A housing made of a polymer such as polyetheretherketone has a plurality of selection ports and a common port. Located within the housing and the end at which the ports are located is a rotor seal. Located within and adjacent to the rotor seal is a rotor tip. The rotor tip has a passageway therethrough to allow fluid communication between the desired selection port and the common port. In the preferred embodiment of the invention, the housing rotor seal and the rotor tip are made of synthetic polymers which are biocompatible. The valve also includes a rotor to which a knob is attached, thus allowing an operator to select a particular selection port. In an alternative embodiment, the valve of the present invention can be attached to a bulkhead and an actuator, thereby allowing automatic operations in accordance with programmed instructions.