A first embodiment of a torque tube coupler may include an outer body that includes a first abutting surface and a second abutting surface adjacent to the first abutting surface. Set screws may be inserted into one or more channels of the first abutting surface. Tightening the set screws may force the abutting surfaces away from each other and the outer body to press against an inner surface of a torque tube. Another embodiment of the torque tube coupler may include a central ring sized based on a size of a torque tube. The torque tube coupler may also include a set of fingers that extend away from a first side of the central ring and are shaped to flex radially outward. The torque tube coupler may include a core disposed within the set of fingers that, when drawn towards the central ring, causes the fingers to flex radially outwards.

A first embodiment of a torque tube coupler may include an outer body that includes a first abutting surface and a second abutting surface adjacent to the first abutting surface. Set screws may be inserted into one or more channels of the first abutting surface. Tightening the set screws may force the abutting surfaces away from each other and the outer body to press against an inner surface of a torque tube. Another embodiment of the torque tube coupler may include a central ring sized based on a size of a torque tube. The torque tube coupler may also include a set of fingers that extend away from a first side of the central ring and are shaped to flex radially outward. The torque tube coupler may include a core disposed within the set of fingers that, when drawn towards the central ring, causes the fingers to flex radially outwards.

This invention is a splint joint for a drive shaft including a receptacle with an interior and with a drive shaft extending from the receptacle. A bushing having a bushing body is inserted into the receptacle interior and the receptacle and bushing are immovably affixed in resistance to rotation by friction. In this variation the bushing is affixed to a bushing ring with the combined bushing and bushing ring inserted into the receptacle. The process of affixing includes, in this variation, machine bolts drawing the bushing and bushing ring together. The bushing and the bushing ring each have a single split and both have a spring function. As the bushing and bushing ring are drawn together the bushing ring is expanded into friction contact with the bushing receptacle interior and the bushing is compressed into friction contact with the bushing ring thereby inhibiting rotation relative to the bushing receptacle. Push bolts allow the bushing to be urged away from the bushing ring allowing the disassembly of the shaft when repair is required.

A pump for pumping a liquid, includes an impeller and an axially extending drive shaft assembly, wherein a distal end of the drive shaft assembly is received in a central recess of the impeller. The drive shaft assembly includes a drive shaft and a connector. The connector includes a sleeve that is in telescopic engagement with the drive shaft. During operation of the pump the impeller is displaceable in the axial direction in relation to the sleeve between a distal rest position and a proximal position. The impeller is biased towards the distal rest position by a spring member arranged between the sleeve and the impeller. The connector includes a hollow adjustment screw that is in threaded engagement with an interior side of the sleeve to limit the maximum degree of telescopic overlap between the sleeve and the drive shaft.

A pump for pumping a liquid, includes an impeller and an axially extending drive shaft assembly, wherein a distal end of the drive shaft assembly is received in a central recess of the impeller. The drive shaft assembly includes a drive shaft and a connector. The connector includes a sleeve that is in telescopic engagement with the drive shaft. During operation of the pump the impeller is displaceable in the axial direction in relation to the sleeve between a distal rest position and a proximal position. The impeller is biased towards the distal rest position by a spring member arranged between the sleeve and the impeller. The connector includes a hollow adjustment screw that is in threaded engagement with an interior side of the sleeve to limit the maximum degree of telescopic overlap between the sleeve and the drive shaft.

A first embodiment of a torque tube coupler may include an outer body that includes a first abutting surface and a second abutting surface adjacent to the first abutting surface. Set screws may be inserted into one or more channels of the first abutting surface. Tightening the set screws may force the abutting surfaces away from each other and the outer body to press against an inner surface of a torque tube. Another embodiment of the torque tube coupler may include a central ring sized based on a size of a torque tube. The torque tube coupler may also include a set of fingers that extend away from a first side of the central ring and are shaped to flex radially outward. The torque tube coupler may include a core disposed within the set of fingers that, when drawn towards the central ring, causes the fingers to flex radially outwards.

A mixer for generating a flow of liquid includes a stationary body, an axially extending drive shaft protruding from the stationary body, a propeller, and a clamping sleeve assembly configured to interconnect the drive shaft and the propeller with each other in order to transmit a rotational motion. The clamping sleeve assembly has an axial clamping length and includes an inner clamping sleeve and an outer clamping sleeve. The inner clamping sleeve has the shape of a tubular wall having an inner surface abutting the drive shaft and an outer surface abutting the outer clamping sleeve and wherein the outer clamping sleeve has the shape of a tubular wall having an inner surface abutting the inner clamping sleeve and an outer surface abutting the propeller. Both the inner surface of the outer clamping sleeve and the outer surface of the inner clamping sleeve are cylindrical along the axial clamping length.

A mixer for generating a flow of liquid includes a stationary body, an axially extending drive shaft protruding from the stationary body, a propeller, and a clamping sleeve assembly configured to interconnect the drive shaft and the propeller with each other in order to transmit a rotational motion. The clamping sleeve assembly has an axial clamping length and includes an inner clamping sleeve and an outer clamping sleeve. The inner clamping sleeve has the shape of a tubular wall having an inner surface abutting the drive shaft and an outer surface abutting the outer clamping sleeve and wherein the outer clamping sleeve has the shape of a tubular wall having an inner surface abutting the inner clamping sleeve and an outer surface abutting the propeller. Both the inner surface of the outer clamping sleeve and the outer surface of the inner clamping sleeve are cylindrical along the axial clamping length.

A mixer for generating a flow of liquid includes a stationary body, an axially extending drive shaft protruding from the stationary body, a propeller, and a clamping sleeve assembly configured to interconnect the drive shaft and the propeller with each other in order to transmit a rotational motion. The clamping sleeve assembly has an axial clamping length and includes an inner clamping sleeve and an outer clamping sleeve. The inner clamping sleeve has the shape of a tubular wall having an inner surface abutting the drive shaft and an outer surface abutting the outer clamping sleeve and wherein the outer clamping sleeve has the shape of a tubular wall having an inner surface abutting the inner clamping sleeve and an outer surface abutting the propeller. Both the inner surface of the outer clamping sleeve and the outer surface of the inner clamping sleeve are cylindrical along the axial clamping length.

A mixer for generating a flow of liquid includes a stationary body, an axially extending drive shaft protruding from the stationary body, a propeller, and a clamping sleeve assembly configured to interconnect the drive shaft and the propeller with each other in order to transmit a rotational motion. The clamping sleeve assembly has an axial clamping length and includes an inner clamping sleeve and an outer clamping sleeve. The inner clamping sleeve has the shape of a tubular wall having an inner surface abutting the drive shaft and an outer surface abutting the outer clamping sleeve and wherein the outer clamping sleeve has the shape of a tubular wall having an inner surface abutting the inner clamping sleeve and an outer surface abutting the propeller. Both the inner surface of the outer clamping sleeve and the outer surface of the inner clamping sleeve are cylindrical along the axial clamping length.