1
Dave D Nagel, Thomas Aparicio Jr: Well drilling tool with diamond radial/thrust bearings. Maurer Engineering, Neal J Mosely, October 18, 1983: US04410054 (247 worldwide citation)

A turbodrill is disclosed for connection to a drill string and has a rotating shaft for turning a drill bit. The turbodrill has rotor and stator blades operated by drilling mud flowing therethrough to rotate the shaft. The shaft is provided with radial/thrust bearing consisting of a pair of annular ...


2
Thomas Aparicio Jr, Dave D Nagel, Ron Graham: Powered ratchet wrench. Gratec, Neal J Mosely, November 6, 1984: US04480510 (19 worldwide citation)

A powered ratchet wrench for turning threaded members, such as nuts or bolt heads, consists of a wrench assembly having a reaction arm adapted to be positioned over a threaded member, viz. nut or bolt, for supporting the same and operating a socket wrench through a ratchet mechanism applying a torqu ...


3
Thomas Aparicio Jr, Ron Graham: Adjustable powered wrench. Gratec, Neal J Mosely, February 21, 1984: US04432256 (8 worldwide citation)

An adjustable powered wrench for turning threaded members consists of a wrench adapted to be positioned over a threaded member, viz. nut or bolt, for applying a torque for tightening or loosening the same. The wrench has an operating arm for transmission of power, preferably having a head with teeth ...