Rajan E Varadan

54944015, Feb 27, 1996

Dec 15, 1994

8/356110

Rajan Varadan - Orangevale CA

F01D 118

415 80

An orifice motor which includes a plurality of spaced-apart rotors positioned along a shaft and enclosed within a casing or housing. Each rotor includes at least one jet orifice thorugh which fluid passes and is ejected tangentially to the peripheral surface of the rotor. The apparatus also includes a high pressure fluid inlet at a first end of the shaft, and a plurality of exit ports together with an exit chamber at a second end of the shaft. Bearings and seals are employed to protect frictionally related surfaces. Fluid is injected into one end of the apparatus and travels axially through the apparatus, passing through each of the rotors by way of the orifices. As the fluid exits the orifices, a pinwheel effect is created which causes the rotors to spin, thus causing the attached shaft to spin. As fluid exits each rotor, it is introduced to the next rotor downstream, where it exits in the same way. The fluid pressure drops as it passes each successive rotor due to momentum imparted to the rotors by the fluid.

60930047, Jul 25, 2000

Feb 12, 1998

9/022814

Rajan Varadan - Sacramento CA
Richard Bach - Kingsley MI

Zenergy LLC - Kingsley MI

F01C 110

418 48

A pump or motor having a three-lobed rotor capable of being used within a hypocycloidal two-lobed stator that is designed primarily for use with a one-lobed rotor. The three-lobed rotor design allows for interchangeability with the two-lobed stator to provide for varying fluid displacements to meet particular demands. A specific application allows for the combination of both the three-lobed rotor along with a one-lobed rotor within the same two-lobed stator, thereby improving the efficiency of the pump or motor.

55494641, Aug 27, 1996

Aug 31, 1995

8/521784

Rajan Varadan - Orangevale CA

F04C 2107

418 48

A progressing cavity pump having a rotor with a longitudinal bore and including at least one helix is mounted eccentrically within a stator having at least two helices. In a first embodiment the rotor is driven by an eccentric drive shaft which shares a journal surface with the rotor bore along the entire length of the rotor. In the second and third embodiments, the rotor is driven by a drive shaft concentric with the stator which drives a drive block having a bore that is eccentric relative to the stator. A rotor hub is rotatably mounted within the drive block bore. The drive shaft additionally drives a longitudinal auxiliary shaft within the longitudinal bore of the rotor. The auxiliary shaft is fixedly coupled to a second drive block which drives the rotor head. As external rotational actuation is applied to the drive shaft, the drive block rotates, acting as a crank on the rotor hub to drive the rotor. Simultaneously, the drive shaft actuates the longitudinal auxiliary shaft which drives the second drive block, the second drive block then acting as a crank on the head of the rotor.

55494650, Aug 27, 1996

Aug 31, 1995

8/522461

Rajan Varadan - Orangevale CA

F04C 2107

418 48

A progressing cavity pump having a rotor with a longitudinal bore and including at least one helix is mounted eccentrically within a stator having at least two helices. In a first embodiment the rotor is driven by an eccentric drive shaft which shams a journal surface with the rotor bore along the entire length of the rotor. In the second and third embodiments, the rotor is driven by a drive shaft concentric with the stator which drives a drive block having a bore that is eccentric relative to the stator. A rotor hub is rotatably mounted within the drive block bore. The drive shaft additionally drives a longitudinal auxiliary shaft within the longitudinal bore of the rotor. The auxiliary shaft is fixedly coupled to a second drive block which drives the rotor head. As external rotational actuation is applied to the drive shaft, the drive block rotates, acting as a crank on the rotor hub to drive the rotor. Simultaneously, the drive shaft actuates the longitudinal auxiliary shaft which drives the second drive block, the second drive block then acting as a crank on the head of the rotor.