A method of manufacturing a connecting rod is provided. The method includes the steps of (1) forming, on a long rod material, a rotation transmitting portion having a non-circular cross section; (2) cutting the rod material to provide the rotation transmitting portion at each of both ends; and (3) forming, by cutting work, a small-diameter column portion and a tapered portion at a first end of the cut rod material from a tip-end side. The small-diameter column portion has a diameter smaller than a diameter of the rotation transmitting portion. The tapered portion is provided continuously from the small-diameter column portion and gradually increases in diameter. The rotation transmitting portion is provided continuously from the tapered portion.

A method of manufacturing a connecting rod is provided. The method includes the steps of (1) forming, on a long rod material, a rotation transmitting portion having a non-circular cross section; (2) cutting the rod material to provide the rotation transmitting portion at each of both ends; and (3) forming, by cutting work, a small-diameter column portion and a tapered portion at a first end of the cut rod material from a tip-end side. The small-diameter column portion has a diameter smaller than a diameter of the rotation transmitting portion. The tapered portion is provided continuously from the small-diameter column portion and gradually increases in diameter. The rotation transmitting portion is provided continuously from the tapered portion.

An electrically isolated coupler may include a driven body, a drive body and an insulating member. The drive body is made of first metallic material and has a driven end configured to interface with a fastening component. The driven body includes a first interface portion and the drive body includes a second interface portion. The drive body is made of a second metallic material and has a drive end configured to interface with a driving tool. The insulating member is disposed between the drive body and the driven body to electrically isolate the drive body and the driven body from each. The first interface portion includes at least one axially extending portion that extends toward the drive body, and the second interface portion includes at least one axially extending portion that extends toward the driven body. The insulating member is disposed between the respective at least one axially extending portions of the first and second interface portions.

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 shaft-hub connection, in particular for a gearbox of a motor vehicle, comprising a shaft, at least one hub which is connected to the shaft, wherein the hub is of tubular design and a shaft end of the shaft engages on a first hub end of the hub, and a closure element is arranged on a second hub end of the hub. A cavity is formed between the closure element and the shaft end of the shaft. The closure element is designed in such a manner that gaseous medium can escape via the closure element in the event of a positive pressure in the cavity.

A power transmission apparatus includes a first/second/third rotary shaft, and a positioning member. The first rotary shaft is connected to an output shaft of a drive source. The second rotary shaft is spline-fitted to a rotary shaft of an electric motor. The third rotary shaft is connected to the first rotary shaft and the second rotary shaft. The positioning member is configured to apply an elastic force in a rotational direction to the rotary shaft and the second rotary shaft in a portion where the rotary shaft and the second rotary shaft overlap each other; set each of a position in the rotational direction of a spline of the rotary shaft of the electric motor and a spline of the second rotary shaft to a specified position, and applies the elastic force in the rotational direction to the rotary shaft and the second rotary shaft.

A power transmission apparatus includes a first/second/third rotary shaft, and a positioning member. The first rotary shaft is connected to an output shaft of a drive source. The second rotary shaft is spline-fitted to a rotary shaft of an electric motor. The third rotary shaft is connected to the first rotary shaft and the second rotary shaft. The positioning member is configured to apply an elastic force in a rotational direction to the rotary shaft and the second rotary shaft in a portion where the rotary shaft and the second rotary shaft overlap each other; set each of a position in the rotational direction of a spline of the rotary shaft of the electric motor and a spline of the second rotary shaft to a specified position, and applies the elastic force in the rotational direction to the rotary shaft and the second rotary shaft.

A cartridge for an electrophotographic image forming apparatus includes a developing roller, a rotatable member for transmitting a rotational force to the developing roller, a coupling member, and a frame. The coupling member is capable of moving between a first coupling member position in which the coupling axis is substantially coaxial with the rotational axis of the rotatable member and a second coupling member position in which the coupling axis is not coaxial with the rotational axis of the rotatable member. When the frame is in a first frame position, the coupling member is in the first coupling member position and a rotational force receiving portion of the coupling member engages with a rotational force applying portion of the apparatus, and, when the frame is in the second frame position, the coupling member is in the second coupling member position and the rotational force receiving portion engages with the rotational force applying portion.

A cartridge for an electrophotographic image forming apparatus includes a developing roller, a rotatable member for transmitting a rotational force to the developing roller, a coupling member, and a frame. The coupling member is capable of moving between a first coupling member position in which the coupling axis is substantially coaxial with the rotational axis of the rotatable member and a second coupling member position in which the coupling axis is not coaxial with the rotational axis of the rotatable member. When the frame is in a first frame position, the coupling member is in the first coupling member position and a rotational force receiving portion of the coupling member engages with a rotational force applying portion of the apparatus, and, when the frame is in the second frame position, the coupling member is in the second coupling member position and the rotational force receiving portion engages with the rotational force applying portion.

The present invention describes an accessory gearbox with a shaft incorporated into a casing and connectable at least in one lateral end area to an accessory unit, with the shaft at least in the lateral end area being designed as a hollow shaft having an inner toothing. To lubricate the inner toothing in the area of the casing at least one baffle device is provided which is designed for guiding hydraulic fluid present in the area of the casing, under the effect of gravity, in the direction of at least one opening provided in the shaft.