Abstract: A fluid rotary machine includes first and second bodies and that are rotatable relative to each other. The second body is inside the first body to define a working fluid space there between. In addition, the machine includes a plurality of gates. Each gate 18 is supported by the first body and is movable in a radial direction with respect to the first and second bodies to extend into and retract from the working fluid space. The machine also includes a magnetic gate control system configured to exert control of the motion and/or position of the gates in the radial direction. The magnetic gate control system is a dispersed system including magnets or magnets and components made of ferromagnetic materials. The magnetic gate control system may be dispersed between the gates, and one or both of the bodies.

Abstract: A rotary fluid machine 10 has a rotor 12, a stator 14, and a plurality of gates. The rotor 12 and stator 14 are rotatable relative to each other and arranged one inside the other to define a working chamber 18 there between. Gates 16 are supported in radial gate slots 20 formed in the rotor 12 and cyclically extend from and retract into the gate slots 20 as the rotor 12 rotates about stator 14. A plurality of demountable lobes is supported on an outer circumferential surface 24 of stator 14. The surface 24 forms a surface of the working chamber 18. Circumferential surface 24 is composed of an intermediate surface 48 which extends in an axial direction and opposite curved surfaces 46. The gate 16 has opposite rounded corners 130 separated by an axial planar surface 132.

Abstract: A fluid rotary machine includes first and second bodies and that are rotatable relative to each other. The secondbody is inside the first body to define a working fluid space there between. In addition, the machine includes a plurality of gates. Each gate 18 is supported by the first body and is movable in a radial direction with respect to the first and second bodies to extend into and retract from the working fluid space. The machine also includes a magnetic gate control system configured to exert control of the motion and/or position of the gates in the radial direction. The magnetic gate control system is a dispersed system including magnets or magnets and components made of ferromagnetic materials. The magnetic gate control system may be dispersed between the gates, and one or both of the bodies.

Abstract: A rotary fluid machine 10 has a rotor 12, a stator 14, and a plurality of gates. The rotor 12 and stator 14 are rotatable relative to each other and arranged one inside the other to define a working chamber 18 there between. Gates 16 are supported in radial gate slots 20 formed in the rotor 12 and cyclically extend from and retract into the gate slots 20 as the rotor 12 rotates about stator 14. A plurality of demountable lobes is supported on an outer circumferential surface 24 of stator 14. The surface 24 forms a surface of the working chamber 18. Circumferential surface 24 is composed of an intermediate surface 48 which extends in an axial direction and opposite curved surfaces 46. The gate 16 has opposite rounded corners 130 separated by an axial planar surface 132.

Abstract: A fluid rotary machine (10) includes an inner housing (12) provided with a manifold (68) for directing working fluid through the machine (10) and an outer housing (14) coupled to the inner housing (12) so that the outer housing (14) can rotate relative to the inner housing (12). A plurality of swinging gates (16) are supported along one longitudinal edge in corresponding sockets (38) formed along the inner circumferential surface (32) of outer housing (14). A plurality of elongated lobes (30) are supported on and evenly spaced about the inner housing (12). There is one intake port (24) and one exhaust port (26) between adjacent lobes (30). The gates (16) are biased so as to ordinarily seal against the inner housing (12). High pressure fluid enters through the inlet port (24) to a region between a lobe (30) and gate (16) causing the outer housing (14) to rotate. Eventually the gate (16) wipes across an exhaust port (26) venting the high pressure fluid through the exhaust port.

Abstract: A rotary machine (10) comprises an inner housing (12) having valving means (14) which includes a shaft (15) for directing working fluid through the machine (10) and, an outer housing (16) within which the inner housing resides. A working chamber (18) is defined between the inner and outer housings (12 and 16). A plurality of gates (20) are supported by the inner housing and are swingable along their respective longitudinal axis between a sealing position in which the gates form a seal against surface (22) of outer housing (16) and a retracted position in which the gates (20) lie substantially against surface (24) of the housing (12).

Abstract: A rotary machine (10) comprises an inner housing (12) having valving means (14) which includes a shaft (15) for directing working fluid through the machine (10) and, an outer housing (16) within which the inner housing resides. A working chamber (18) is defined between the inner and outer housings (12 and 16). plurality of gates (20) are supported by the inner housing and are swingable along their respective longitudinal axis between a sealing position in which the gates form a seal against surface (22) of outer housing (16) and a retracted position in which the gates (20) lie substantially against surface (24) of the housing (12).

Abstract: A rotary hydraulic machine (10) for incorporation in a drill string (92) of a well formation (86). The machine (10) is particularly adapted to act as a motor and includes an outer housing (11) of a generally cylindrical configuration having a radial inner surface (12). Rotatably mounted within the housing (11) is a shaft assembly (13) including a shaft (14) upon which a stator (15) is mounted. The stator (15) includes a plurality of lobes (16) which have a maximum radius approximately equal to the radius of the surface (12). A plurality of gates (35) are radially movably mounted in the housing (11) and engage the stator (15). The shaft (14) is hollow to provide for the delivery and the removal of hydraulic fluid to the working chambers (45 and 46) of the machine (10).

Abstract: A rotary hydraulic machine (10) for incorporation in a drill string (92) of a well formation (86). The machine (10) is particularly adapted to act as a motor and includes an outer housing (11) of a generally cylindrical configuration having a radial inner surface (12). Rotatably mounted within the housing (11) is a shaft assembly (13) including a shaft (14) upon which a stator (15) is mounted. The stator (15) includes a plurality of lobes (16) which have a maximum radius approximately equal to the radius of the surface (12). A plurality of gates (35) are radially movably mounted in the housing (11) and engage the stator (15). The shaft (14) is hollow to provide for the delivery and the removal of hydraulic fluid to the working chambers (45 and 46) of the machine (10).

Abstract: A rotary hydraulic machine (10) for incorporation in a drill string (92) of a well formation (86). The machine (10) is particularly adapted to act as a motor and includes an outer housing (11) of a generally cylindrical configuration having a radial inner surface (12). Rotatably mounted within the housing (11) is a shaft assembly (13) including a shaft (14) upon which a stator (15) is mounted. The stator (15) includes a plurality of lobes (16) which have a maximum radius approximately equal to the radius of the surface (12). A plurality of gates (35) are radially movably mounted in the housing (11) and engage the stator (15). The shaft (14) is hollow to provide for the delivery and the removal of hydraulic fluid to the working chambers (45 and 46) of the machine (10).

Abstract: A puller assembly (10,42) comprising at least two angled brackets (12) each pivotally secured at a first end (14) to a base (18), each of the angled brackets (12) having a second end (16) remote from the first end (14) and disposed oppositely with respect to the base (18), a screw means (24) threadedly engaged with the second ends (16) and disposed so as to allow adjustment of the distance between the second ends (16), a drive bolt (20) threadedly engaged in the base (18) centrally of the angled brackets (12) and a leg (32) pivotally fixed to a respective one of the angled brackets (12) and disposed to attach to an object to be pulled.

Abstract: A torque transmitting device characterized by a shaft (14) having a horizontal axis (17), a first end, a second end, said first end being arranged to be inserted foremost into a bore in a workpiece, wherein the shaft (14) is formed with at least one groove (16) extending longitudinally of the shaft (14), a workpiece engaging jaw (19) is mounted in each groove (16), slotted annular collar (13) is provided for retaining each jaw (19) in its respective groove (16). Each groove (16) may be angled with respect to the longitudinal axis (17) of the shaft (14) so that each jaw is non-aligned with the longitudinal axis (17) of the shaft (14).

Abstract: A torque transmitting device characterized by a shaft (14) having a horizontal axis (17) and a first end and a second end said first end being arranged to be inserted foremost into a bore in a workpiece, wherein the shaft (14) is formed with at least one groove (16) extending longitudinally of the shaft (14), a workpiece engaging jaw (19) is mounted in the or each groove (16), means (13) is provided for retaining the or each jaw (19) in its respective groove (16) and wherein the or each groove (16) is tilted with respect to the longitudinal axis (17) of the shaft (14) so that the or each jaw is non-aligned with the longitudinal axis (17) of the shaft (14).