A drive coupling assembly for a food processing device includes an adapter having a connection mechanism for connection of the adapter to a drive shaft of a motor of a food processing device, and a coupler body having an aperture and an opening, the opening being configured to receive a shaft of a blade of a food processing container, and the aperture being configured to releasably receive the adapter.

A torque transfer assembly for a bit holder includes an axial movement limiting subassembly and a rotation limiting subassembly. The axial movement limiting subassembly is configured to retain a drive body of the bit holder in proximity to a driven body of the bit holder. The rotation limiting subassembly is configured to cause torque applied to the drive body to be transferred to the driven body. The rotation limiting subassembly includes a first cam body at a distal end of the drive body and a second cam body at a distal end of the driven body. The first and second cam bodies are configured to transfer a majority of the torque between the drive body and the driven body indirectly via the torque transfer assembly by limiting rotation of the first cam body relative to the second cam body.

A molten metal rotor receives and retains an end of a molten metal rotor shaft. The rotor shaft has one or more projections at the end received in the rotor. The rotor has an inner cavity, a top surface with an opening leading to the inner cavity, and at least one abutment. The opening includes one or more portions for allowing each projection to pass through the opening and into the inner cavity. The rotor and/or shaft are then rotated so at least one of the outwardly-extending projections is under the top surface of the rotor and is against an abutment. A molten metal pump, rotary degasser scrap melter or other device used in molten metal may utilize a rotor/shaft combination as disclosed herein.

The present invention discloses a display screen module structure, comprising a mounting frame and a display screen mounted cooperatively, wherein the display screen comprises a bottom shell, a screen body arranged on a front surface of the bottom shell and a power box arranged on a back surface of the bottom case, wherein the display screen module structure further comprises a manual-automatic integrated unloading device, the manual-automatic integrated unloading device comprises an electric driving member, a transmission member, an abutment member and a push-out rod. For a display screen module with a short mounting position, a user separates a mounting frame body from a display screen by operating the rotation handle, thus reducing the power consumption, and being more environmentally friendly.

A universal joint includes a socket member and a driving member. The socket member includes a receiving hole, and an inner periphery of the receiving hole is formed with first evading portions and first abutting portions staggered with each other to cause the first abutting portions not connected to each other. Each first abutting portion is provided with a first abutting face, a second abutting face, and an adjacent edge formed between the first abutting face and the second abutting face. One side of the adjacent edge forms an adjacent edge angle being greater than 177 degrees and less than 180 degrees. The driving member includes a rounded base arranged in the receiving hole and a driving column opposite to the rounded base.

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 system for transferring torque from a driveshaft to a milling drum mountable on the driveshaft. The system includes a first coupler removably coupled to the driveshaft to co-rotate with the driveshaft. The first coupler defines an engagement surface. Also, the system includes a second coupler removably coupled to the milling drum. The second coupler defines a mating surface engageable with the engagement surface of the first coupler to engage the second coupler to the first coupler and transfer torque from the driveshaft to the milling drum.

A shaft and hub connection assembly including a shaft and a hub each extending along and rotatable about an axis. One of the shaft and the hub defines a male connection portion, and the other of the shaft and the hub defines a female connection portion. The female connection portion has a radially inner surface comprised of a plurality of inside faces. The male connection portion has a radially outer surface comprised of a plurality of outside faces that nest within the inside faces. A plurality of outside transition regions are located between the outside faces in a circumferential direction and are blended at an outside radius. A plurality of inside transition regions are located between the inside faces of the female connection portion in the circumferential direction and are blended at an inside radius. A gap is provided between the outside and inside transition regions.

A torque transfer assembly for a bit holder includes an axial movement limiting subassembly and a rotation limiting subassembly. The axial movement limiting subassembly is configured to retain a drive body of the bit holder in proximity to a driven body of the bit holder. The rotation limiting subassembly is configured to cause torque applied to the drive body to be transferred to the driven body. The rotation limiting subassembly includes a first cam body at a distal end of the drive body and a second cam body at a distal end of the driven body. The first and second cam bodies are configured to transfer a majority of the torque between the drive body and the driven body indirectly via the torque transfer assembly by limiting rotation of the first cam body relative to the second cam body.

A clamping hub includes a body and an aperture, defined by the body, configured to receive a shaft. The clamping hub also includes a clamp configured to secure the shaft in the aperture. the clamp includes a first deformable component that defines a first portion of the aperture and configured to, when deformed, change a size of the aperture and a second deformable component that defines a second portion of the aperture opposite from the first portion of the aperture and configured to, when deformed, change the size of the aperture.