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, 1979
Filed:
Dec. 01, 1977
Ladd M Adams, Norman, OK (US);
Entek Corporation, Norman, OK (US);
Abstract
An improved rotary valve comprising a valve body having a flow passage extending therethrough and a rotary valve stem journaled in said valve body transversely intersecting the flow passage. The valve stem includes at least one spring biased spherical valve member carried in a radially aligned cavity formed in the valve stem. A valve seat is formed in the valve body coaxial with the flow passage and is conformed to sealingly receive the spring biased valve member therein when the valve is placed in the closed position. The valve stem is pressure equalized within the valve body. In one form the valve stem is provided with an external configuration adjacent the valve member and flow passage to maintain a constant flow rate through the open valve. In another form this external configuration is modified to provide for varying the flow rate through the open valve through manipulation of the valve stem. A pressure equalized probe mechanism is disclosed as well as methods of forming valve seats within the valve bodies to conform to the configuration of the associated valve members.