F - Mech Eng,Light,Heat,Weapons – 04 – D
Patent
F - Mech Eng,Light,Heat,Weapons
04
D
103/20
F04D 3/02 (2006.01) E21B 4/02 (2006.01) F04C 2/107 (2006.01)
Patent
CA 1057120
ABSTRACT There is disclosed a fluid motor composed of a helical gear pair wherein an inner member has one or more external helical threads and a cooperating outer member has one or more internal helical threads, the number of helical threads on the inner and outer members differing by one. The outer member is secured to one of the sections of a water swivel which is conventional except that it has an axial intake, radial tube and inner member supporting guide and means are associated with an end of the inner member and with the other section of the water swivel to prevent relative rotation between said inner and outer members while permitting gyration with oscillation of the inner member in relation to the outer member. Each end of the device has a tapered thread. The motor may be used either end up. A drill pipe or suitable sub is threaded into one end of the device and a tool is threaded into the other end of the device, directly or with a sub between. In one embodiment the outer member of the gear pair is held stationary by the drill pipe which is threaded into it or with a sub between, and the tool which is threaded into the other end is rotated by the rotation of the inner member and the rotating part of the water swivel. In another embodiment, the drill pipe is threaded into the stationary part of the water swivel or with a sub between and thus the inner element of the gear pair is held stationary and the outer element is caused to rotate with the rotating portion of the water swivel, and thus the tool is driven by the outer element of the gear pair. The tool is useful in earth boring as in well drilling, coring, mining, foundation settings, and substrata exploration. Two or more devices according to the invention may be coupled together with various advantages.
265188
Clark Wallace
Clark Wallace
LandOfFree
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