Various embodiments include a rotor key member, along with a related assembly and steam turbine. Particular embodiments include a rotor key member for retaining a circumferential seal in a steam turbine, the rotor key member including: a main body; a first arm extending from the main body; a second arm extending from the main body, wherein the first, arm, the second arm and the main body define a space spanning axially between the first arm and the second arm; and a hook extending from the second arm in a direction axially away from the space, the hook sized to contact a radially inner surface of the circumferential seal.

Various embodiments include a rotor key member, along with a related assembly and steam turbine. Particular embodiments include a rotor key member for retaining a circumferential seal in a steam turbine, the rotor key member including: a main body; a first arm extending from the main body; a second arm extending from the main body, wherein the first, arm, the second arm and the main body define a space spanning axially between the first arm and the second arm; and a hook extending from the second arm in a direction axially away from the space, the hook sized to contact a radially inner surface of the circumferential seal.

Various embodiments include a rotor key member, along with a related assembly and steam turbine. Particular embodiments include a rotor key member for radially retaining a circumferential seal in a steam turbine rotor body, the rotor key member including: a main body sized to contact an axial face of the circumferential seal; and a hook extending from the main body in a direction axially away from the circumferential seal, the hook sized to substantially complement a corresponding shelf in the steam turbine rotor body to restrict movement of the circumferential seal relative to the steam turbine rotor body.

Various embodiments include a rotor key member having: a body with a primary axis extending in a direction substantially perpendicular to an axial direction in a steam turbine, the body including: a first pair of opposing sides; a second pair of opposing sides extending between the first pair of opposing sides; a top surface and a bottom surface extending between the second pair of opposing sides; and a fillet, bevel or chamfer edge extending between a first one of the first pair of opposing sides and the bottom surface and extending an entire length of the body along the primary axis; and a slot within the body, the slot extending a portion of a length of the body along the primary axis between the second pair of opposing sides and forming an opening in a second one of the first pair of opposing sides.

Various embodiments include a rotor key member having: a body with a primary axis extending in a direction substantially perpendicular to an axial direction in a steam turbine, the body including: a first pair of opposing sides; a second pair of opposing sides extending between the first pair of opposing sides; a top surface and a bottom surface extending between the second pair of opposing sides; and a fillet, bevel or chamfer edge extending between a first one of the first pair of opposing sides and the bottom surface and extending an entire length of the body along the primary axis; and a slot within the body, the slot extending a portion of a length of the body along the primary axis between the second pair of opposing sides and forming an opening in a second one of the first pair of opposing sides.

The invention relates to detachable connections for pieces, mainly rigid ones, and can be used, in particular, for connecting elements of building constructions, for example, transparent domes, equipment frame bodies, furniture and toy elements etc. In the joint for connecting pieces having a curved surface, which comprises projections arranged on mated sides of the pieces, said projections having bulbous widenings at their ends and necks at their bases, and complementary grooves in the form of bulbous cavities that correspond to the bulbous widenings of the projections and change into narrow channels that match the necks of the projections, and wherein the surfaces of the ends of the projections and the surfaces of the bottom of the grooves mated thereto have conical shape, and the tips of the surfaces of the ends of projections and the bottom of the cavities are arranged on opposite sides relative to the connected pieces, the side surfaces of the projections and the side surfaces of the grooves mated thereto are formed by moving a straight line along the guide path, which is the intersection line of the spherical surface with the cylindric surface formed by moving a straight line along an S-shaped guide path, and wherein the side surfaces of the projections and the side surfaces of the grooves are smoothly mated with the surfaces of the ends of projections and the surfaces of the bottom of the grooves, respectively. A joint for connecting pieces delimited by curved surfaces is created.

The invention relates to detachable connections for pieces, mainly rigid ones, and can be used, in particular, for connecting elements of building constructions, for example, transparent domes, equipment frame bodies, furniture and toy elements etc. In the joint for connecting pieces having a curved surface, which comprises projections arranged on mated sides of the pieces, said projections having bulbous widenings at their ends and necks at their bases, and complementary grooves in the form of bulbous cavities that correspond to the bulbous widenings of the projections and change into narrow channels that match the necks of the projections, and wherein the surfaces of the ends of the projections and the surfaces of the bottom of the grooves mated thereto have conical shape, and the tips of the surfaces of the ends of projections and the bottom of the cavities are arranged on opposite sides relative to the connected pieces, the side surfaces of the projections and the side surfaces of the grooves mated thereto are formed by moving a straight line along the guide path, which is the intersection line of the spherical surface with the cylindric surface formed by moving a straight line along an S-shaped guide path, and wherein the side surfaces of the projections and the side surfaces of the grooves are smoothly mated with the surfaces of the ends of projections and the surfaces of the bottom of the grooves, respectively. A joint for connecting pieces delimited by curved surfaces is created.

A torque transmission device includes a shaft which has shaft teeth around its outer circumference, a hub which has hub teeth on an inner circumference, wherein the hub is arranged on the shaft in such a way that the shaft teeth and the hub teeth mesh with one another in order to transmit torque. The torque transmission device furthermore includes at least one spring element which passes entirely through the hub and is supported on the shaft and the hub and exerts a spring force on the hub and the shaft, wherein at least a component of the spring force is directed in such a way that around the entire circumference of the shaft and hub adjacent flanks of the shaft teeth and the hub teeth are pushed together.

Various embodiments include a rotor key member having: a body with a primary axis extending in a direction substantially perpendicular to an axial direction in a steam turbine, the body including: a first pair of opposing sides; a second pair of opposing sides extending between the first pair of opposing sides; a top surface and a bottom surface extending between the second pair of opposing sides; and a fillet, bevel or chamfer edge extending between a first one of the first pair of opposing sides and the bottom surface and extending an entire length of the body along the primary axis; and a slot within the body, the slot extending a portion of a length of the body along the primary axis between the second pair of opposing sides and forming an opening in a second one of the first pair of opposing sides.

Various embodiments include a rotor key member, along with a related assembly and steam turbine. Particular embodiments include a rotor key member for retaining a circumferential seal in a steam turbine, the rotor key member including: a main body; a first arm extending from the main body; a second arm extending from the main body, wherein the first, arm, the second arm and the main body define a space spanning axially between the first arm and the second arm; and a hook extending from the second arm in a direction axially away from the space, the hook sized to contact a radially inner surface of the circumferential seal.