Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Pilot casing mill










Image Number 2 for United States Patent #5027914.

A pilot casing mill for removing unwanted pipe from a well bore, which includes a cylindrical pilot having helical vanes and adapted for mounting on one end of a cylindrical mill body. The mill body is provided with longitudinal slots which receive outwardly-extending blades fitted with multiple cutting elements for engaging and cutting the pipe when the pilot casing mill is mounted on the end of a rotatable drill string and inserted in the well. In a preferred embodiment of the invention the blades are removably secured in the slots by removable wedge blocks and may be longitudinally adjusted in place to align adjacent rows of cutting elements, by operation of multiple adjusting screws seated against an adjusting screw ring mounted in a circumferential slot provided in the mill body.








 
 
  Recently Added Patents
Method and system for shared high speed cache in SAS switches
Tailoring the band gap of solar cells made of liquid silane by adding germanium
Integrated bug tracking and testing
Silicone hydrogel, lens for eye and contact lens
Method and apparatus for transmitting and receiving a signal in a communication system
Adding value to a rendered document
Devices, systems, and methods for tactile feedback and input
  Randomly Featured Patents
Pulse generating circuit for driving DC motor
Tetrahydrocarbostyril derivatives for the prophylaxis of asthma, hayfever and rhinitis
Anchor for seat belt component
Corner and/or edge protector
Method for erasing an NROM cell
Illumination apparatus and control device for controlling the illumination apparatus
Table for self-service shops
Write circuitry for hierarchical memory architectures
Electrical connectors
Digital pump with bypass inlet valve