Resources Contact Us Home
Expandable reamers for earth boring applications

Image Number 13 for United States Patent #7900717.

An expandable reamer apparatus for drilling a subterranean formation includes a tubular body, one or more blades, each blade positionally coupled to a sloped track of the tubular body, a push sleeve and a drilling fluid flow path extending through an inner bore of the tubular body for conducting drilling fluid therethrough. Each of the one or more blades includes at least one cutting element configured to remove material from a subterranean formation during reaming. The push sleeve is disposed in the inner bore of the tubular body and coupled to each of the one or more blades so as effect axial movement thereof along the track to an extended position responsive to exposure to a force or pressure of drilling fluid in the flow path of the inner bore.

  Recently Added Patents
Apparatus and method for scrolling a screen of a portable terminal having a touch screen
High-frequency-link power-conversion system having direct double-frequency ripple current control and method of use
Method for conformal plasma immersed ion implantation assisted by atomic layer deposition
Thin film switch and press key/keyboard using the same
Real ear measurement system using thin tube
Automotive lighting system
Information recording medium and information processing method for accessing content with license or copyright protection
  Randomly Featured Patents
Lighting support post
Magnetic memory device, method for writing into magnetic memory device and method for reading magnetic memory device
Omnidirectional antenna for around a mast
Support for holding watches
Closing device for original cover
Turbulence generating device adjacent the inlet end of each discharge port of a multi-cylinder piston-type compressor for providing internal pulsation and noise suppression
Prolyl hydroxylase inhibitors and methods of use
Composition for cover rubber of rubber pipes or hoses
Method for making nanolipidic particles
Gripping apparatus and method