Resources Contact Us Home
Downhole motor

Image Number 2 for United States Patent #6230823.

A downhole hydraulic motor consisting of an outer rim having six or eight lobes on the toothed inner surface, a rotor having four or six lobes respectively on the toothed outer surface as well as a number of planetary gears being constantly engaged with both the outer rim and the rotor and dividing the space between the rim and the rotor into a number of working chambers changing their volume with the rotation of the motor. The working fluid is supplied to the working chambers through channels both in the rotor and the side covers, one of which can slide inside the outer rim to allow adjustment of the gap between the ends of the planetary gears and the side covers.

  Recently Added Patents
Architecture for accelerated computer processing
Use of natural query events to improve online advertising campaigns
Point-of-sale cart
Tire for motorcycle
Wireless device with extendable antenna
Bi-level switching with power packs
Cytokine receptors associated with myelogenous haematological proliferative disorders and uses thereof
  Randomly Featured Patents
Retaining lock for chain link fence slats
Polyarylate-polyethylene composite laminated structures
Products and process for preparing low-fat roasted nuts
Suspension package
Combined television camera with video cassette recorder
Egg transfer apparatus
Combination closed-circuit washer and drier
Reaction system for performing in the amplification of nucleic acids
Vibration gyro sensor
Electronic digital time display apparatus