A power transmission apparatus including a transmission, a case that accommodates the transmission, a counter drive gear to which power from the transmission is transmitted, a counter driven gear that meshes with the counter drive gear, and a drive pinion gear that is disposed and spaced apart in an axial direction from the counter driven gear and that rotates together with the counter driven gear, the power transmission apparatus.

A power transmission apparatus including a transmission, a case that accommodates the transmission, a counter drive gear to which power from the transmission is transmitted, a counter driven gear that meshes with the counter drive gear, and a drive pinion gear that is disposed and spaced apart in an axial direction from the counter driven gear and that rotates together with the counter driven gear, the power transmission apparatus.

A drum brake device for a vehicle includes a first brake shoe and a second brake shoe movably coupled to a back plate, and spaced apart from each other; a wheel cylinder positioned between one end of the first brake shoe and one end of the second brake shoe, and configured to expand the distance between the one end of the first brake shoe and the one end of the second brake shoe; and an actuator positioned between another end of the first brake shoe and another end of the second brake shoe, and configured to provide a driving force to expand the distance between the one end of the first brake shoe and the one end of the second brake shoes and to expand the distance between the another end of the first brake shoe and the another end of the second brake shoe.

A drum brake device for a vehicle includes a first brake shoe and a second brake shoe movably coupled to a back plate, and spaced apart from each other; a wheel cylinder positioned between one end of the first brake shoe and one end of the second brake shoe, and configured to expand the distance between the one end of the first brake shoe and the one end of the second brake shoe; and an actuator positioned between another end of the first brake shoe and another end of the second brake shoe, and configured to provide a driving force to expand the distance between the one end of the first brake shoe and the one end of the second brake shoes and to expand the distance between the another end of the first brake shoe and the another end of the second brake shoe.

An illustrative example drum brake device includes a drum having an inner, braking surface. At least one brake shoe includes a friction lining and a support structure for the friction lining. The support structure includes a window having a first portion that is wider than a second portion. A shoe mount is configured to be received through the first portion of the window and engage the support structure adjacent the second portion of the window in a manner that resists movement of the brake shoe in two dimensions and allows selective movement of the brake shoe in a third dimension for allowing the friction lining to selectively engage the braking surface.

An automatic transmission is provided with a brake including a hub member coupled to a transmission case, a drum member coupled to a given rotary member, friction plates, a piston configured to engage the friction plates, and a hydraulic chamber for engagement disposed radially inward of the hub member and to which hydraulic fluid for biasing the piston in an engaging direction is supplied. The piston includes a pressing part configured to press the friction plates, a hydraulic chamber for engagement forming part, and a coupling part coupling the pressing part to the hydraulic chamber for engagement and extending radially. The hub member includes spline parts with which the friction plates are spline-engaged. Notches are formed by cutting the coupling part of the piston so as to be spaced apart from each other in circumferential directions, and end parts of the spline parts in axial directions enter into the notches.

An automatic transmission is provided with a brake including a hub member coupled to a transmission case, a drum member coupled to a given rotary member, friction plates, a piston configured to engage the friction plates, and a hydraulic chamber for engagement disposed radially inward of the hub member and to which hydraulic fluid for biasing the piston in an engaging direction is supplied. The piston includes a pressing part configured to press the friction plates, a hydraulic chamber for engagement forming part, and a coupling part coupling the pressing part to the hydraulic chamber for engagement and extending radially. The hub member includes spline parts with which the friction plates are spline-engaged. Notches are formed by cutting the coupling part of the piston so as to be spaced apart from each other in circumferential directions, and end parts of the spline parts in axial directions enter into the notches.

A brake unit for use in utility vehicles includes an actuating element and a piston element, wherein the actuating element is displaceable along an actuation axis, wherein the piston element is displaceable along a piston axis and is secured against displacement transversely to the piston axis, wherein the actuation axis and the piston axis stand substantially transversely to each other, wherein the actuating element comprises an actuating face and wherein the piston element comprises a piston face, and wherein a plurality of roller bodies is arranged between the actuating face and the piston face for transmission of an actuating force between the actuating element and the piston element.

A brake unit for use in utility vehicles includes an actuating element and a piston element, wherein the actuating element is displaceable along an actuation axis, wherein the piston element is displaceable along a piston axis and is secured against displacement transversely to the piston axis, wherein the actuation axis and the piston axis stand substantially transversely to each other, wherein the actuating element comprises an actuating face and wherein the piston element comprises a piston face, and wherein a plurality of roller bodies is arranged between the actuating face and the piston face for transmission of an actuating force between the actuating element and the piston element.

A drum brake device for a vehicle includes a first brake shoe and a second brake shoe movably coupled to a back plate, and spaced apart from each other; a wheel cylinder positioned between one end of the first brake shoe and one end of the second brake shoe, and configured to expand the distance between the one end of the first brake shoe and the one end of the second brake shoe; and an actuator positioned between another end of the first brake shoe and another end of the second brake shoe, and configured to provide a driving force to expand the distance between the one end of the first brake shoe and the one end of the second brake shoes and to expand the distance between the another end of the first brake shoe and the another end of the second brake shoe.