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. 07, 1980
Filed:
Aug. 14, 1978
John D Muchow, Long Beach, CA (US);
Valve Concepts International, Carson, CA (US);
Abstract
The invention is an improvement for controlling the flow of fluid in a conduit to be used in combination with a ball valve. The ball valve includes a valve body which has a bore extending therethrough and which also has an inlet and an outlet which are axially aligned and adapted to be mechanically coupled to the conduit. The valve body also has an aperture therein. The ball valve also includes a sperical valve member having a port the axis of which is alignable with the axis of the bore of the valve body and a stem having an inner end mechanically coupled to the spherical valve member and an axially outer end which extends through the aperture of the valve body. The ball valve further includes a device for forming a seal between the aperture of the valve body and the stem. The improvement includes a cylindrical sealing member which has an outer cylindrical sidewall and which is axially aligned with the port of the spherical valve member. The cylindrical sealing member has an enclosed top end and a plurality of oppositely disposed holes in its outer cylindrical sidewall so that an erosion trim control is formed in order to cause the flow to impinge upon itself at the center of the cylindrical sealing member. The cylindrical sealing member is slideably engaged within the port of the spherical valve member. The improvement also includes an adjustment mechanism for adjusting the position of the cylindrical sealing member along the axis of the port of the spherical sealing valve member.