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:
Apr. 08, 2014
Filed:
Oct. 05, 2011
Frederick Joseph Whiting, La Grange, IL (US);
Griffin Mcneil Doak, Downers Grove, IL (US);
Frederick Joseph Whiting, La Grange, IL (US);
Griffin McNeil Doak, Downers Grove, IL (US);
Whiting Technologies Corporation, Willowbrook, IL (US);
Abstract
Rotary valves are provided having an elongate spool defining coaxially aligned inlet and outlet ports for respectively receiving and discharging a fluid, and spool inlet and outlet orifices. A rotary cage assembly defines an annular cage recess and cage inlet and outlet orifices in communication with the recess and coaxially surrounds the spool for reciprocal rotations thereabout. An actuator assembly is coupled to the rotary cage assembly for moving the rotary cage assembly between open and closed positions. When in the open position the cage inlet and outlet orifices are in fluid communication with the spool inlet and outlet orifices, respectively, to allow fluid to flow from the spool inlet port to the spool outlet port by way of the annular cage recess. When in the closed position however fluid communication is blocked between at least the cage and spool outlet orifices.