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US 4,059,165 AGranted
Versatile fluid motor and pump
OwnerWallace Clarkinventor
Life of this patent
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OwnerWallace Clarkinventor
Estimating the term…
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 outer 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.
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including an inner member having one or more external helical threads, a cooperating outer member having one or more internal helical threads, the number of helical threads on said inner and outer members differing by one and a swivel having relatively rotatable sections;
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including an inner member having one or more external helical threads, a cooperating outer member having one or more internal helical threads, the number of helical threads on said inner and outer members differing by one, and a swivel having relatively rotatable sections;
The combination of claim 11 wherein the bit is of a tulip configuration to provide an upper bearing for the bit leg against the bore hole wall.
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including an inner member having one or more external helical threads, a cooperating outer member having one or more internal helical threads, the number of helical threads on said inner and outer members differing by one, and a swivel having relatively rotatable sections;
The combination of claim 15 wherein at least one of the connections between a motor and a coupling or between a drill stem and a motor has a shoulder and threads disposed at an angle of a few degrees to the axis of the motor or coupling or drill stem, so as to provide for a rock and roll action of the bit.
The combination of claim 18 wherein the bit is of a tulip configuration to provide an upper bearing for the bit leg against the bore hole wall.
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including a inner member having one or more external helical threads, a cooperating outer member having one or more internal helical threads, the number of helical threads on said inner and outer members differing by one and a swivel having relatively rotatable sections;
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including an inner member having one or more external helical threads, and a cooperating outer member having one or more internal helical threads the number of helical threads on said inner and outer member differing by one;
First and second fluid motors coupled together in generally axial tandem relation, each of said motors comprising a helical gear pair including an inner member having one or more external helical threads, and a cooperating outer member having one or more internal helical threads the number of helical threads on said inner and outer members differing by one;
In combination, first and second generally axially aligned fluid motors and a member coupling said fluid motors together;
In combination, first and second fluid motors and a member coupling said fluid motors together;
In combination, first and second generally axially aligned Moineau fluid assemblies serving as a fluid pump or a fluid motor, each of said assemblies comprising inner and outer helical thread gear members, and means for drivingly coupling said assemblies together, the threads on the inner and outer members of said assemblies being of the same hand, said coupling means including a swivel having generally concentric relatively rotatable sections, first means for connecting the axially adjacent ends of said inner members to one of said swivel sections, and second means for connecting the axially adjacent ends of said outer members to the other of said swivel sections, said first connecting means including means for preventing either inner member from rotating relative to said one swivel section while permitting said inner members independently to gyrate and oscillate relative to said one swivel section.
An apparatus for drivingly coupling first and second generally axially aligned Monieau fluid pumps or motors, each having cooperating inner members with external helical threads and outer members with internal helical threads, said threads being of the same hand, said coupling apparatus comprising a swivel having relatively rotatable sections, first means for connecting said inner members to one of said swivel sections, and second means for connecting said outer members to said other swivel section, said first connecting means including means providing inwardly opening receivers on said one swivel section and means for engaging one of said receivers, said engaging means extending outwardly from each inner member, each engaging means and its receiver preventing rotation of its inner member relative to said one swivel section and permitting said inner member to gyrate and oscillate relative to said one swivel section.
Dependencies are inferred from the claim text.