Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Variable choke valve










Image Number 11 for United States Patent #7377327.

Embodiments of the present invention generally provide a more reliable variable choke flow control valve. In one embodiment, a variable choke valve for use in a wellbore is provided. The valve includes a tubular housing having an axial bore therethrough and a port through a wall thereof. The valve further includes a tubular sleeve having an axial bore therethrough and first and second holes through a wall thereof and disposed within the housing. The first hole is larger than the second hole, and the sleeve is actuatable among three positions: a first position where the first hole is aligned with the port, a second position where the second hole is aligned with the port, and a third position where the sleeve wall is aligned with the port.








 
 
  Recently Added Patents
Diaminocyclohexane compounds and uses thereof
Imaging lens having five lens elements, and electronic apparatus having the same
Semiconductor devices having multi-width isolation layer structures
Shoe bag
Point-of-sale cart
Method for detecting directions of regularity in a two-dimensional image
Probe for ultrasound diagnostic apparatus
  Randomly Featured Patents
Adjustment apparatus for ski boot
Preparation and use of steroid-polyanionic polymer-based conjugates targeted to vascular endothelial cells
Printing plate mounting and proofing machine and method for using same
Method and means for anterior lumbar exact cut with quadrilateral osteotome and precision guide/spacer
Cargo security seal
Microactuator, head gimbal assembly, and magnetic disk drive
Football with fins
Method and apparatus for continuous processing of semiconductor wafers
Nectarine tree named `NECTARTIC`
Universal inspection workpiece holder