Patent ID: 8035244
Filing Date: 2011-10-11
Classification: E21B,F03B,H02K

Abstract:
1. An impulse rotor generator for generating power in response to a primary mud flow in a drill string, said generator comprising: a power rotor, at least one stationary magnetic pickup, a pickup coil mounted on said at least one stationary magnetic pickup, said power rotor being positioned at least in part in said primary mud flow and being rotatable in response to said primary mud flow, said power rotor having an axis of rotation that is transverse to said primary mud flow, said power rotor having a plurality of magnets affixed thereto, said magnets being arranged so as to magnetically couple with the at least one stationary magnetic pickup, wherein upon rotation of said power rotor in response to said primary mud flow, a current is produced in said pickup coil mounted on said at least one stationary magnetic pickup.