A furniture system having a furniture item which includes an electrically-adjustable component, a control unit and a linear actuator for adjusting a component of the furniture item is provided. The linear actuator includes a gear mechanism including a hollow element and a first stage formed as a friction wheel stage. The linear actuator further includes a motor on a drive side and an adjustment member arranged on an output side. The linear actuator, in particular the motor, the gear mechanism and the adjustment member are adapted to alter a length of the adjustment member using the motor and the gear mechanism. The control unit is coupled with the linear actuator and adapted to actuate the linear actuator for adjusting the component.

A furniture system having a furniture item which includes an electrically-adjustable component, a control unit and a linear actuator for adjusting a component of the furniture item is provided. The linear actuator includes a gear mechanism including a hollow element and a first stage formed as a friction wheel stage. The linear actuator further includes a motor on a drive side and an adjustment member arranged on an output side. The linear actuator, in particular the motor, the gear mechanism and the adjustment member are adapted to alter a length of the adjustment member using the motor and the gear mechanism. The control unit is coupled with the linear actuator and adapted to actuate the linear actuator for adjusting the component.

Disclosed are embodiments of thrust absorbing planetary traction drives that utilize roller-shaft traction interfaces that are slanted to absorb thrust created on a turbo shaft by a turbine or compressor. Slanted traction surfaces on the sun portion of the turbo shaft are slanted inwardly so that the turbo shaft remains centered in the planetary traction drive. Either double roller planets or single roller planets can be used to absorb thrust in the axial direction of the turbo shaft. Various curved and slanted surfaces can be utilized to create traction interfaces that hold and stabilize the turbo shaft both axially and radially.

Disclosed are embodiments of thrust absorbing planetary traction drives that utilize roller-shaft traction interfaces that are slanted to absorb thrust created on a turbo shaft by a turbine or compressor. Slanted traction surfaces on the sun portion of the turbo shaft are slanted inwardly so that the turbo shaft remains centered in the planetary traction drive. Either double roller planets or single roller planets can be used to absorb thrust in the axial direction of the turbo shaft. Various curved and slanted surfaces can be utilized to create traction interfaces that hold and stabilize the turbo shaft both axially and radially.

A high speed ratio drive system is formed of planet rollers, each having varying diameter, an outer fixed ring in contact with one diameter of the planet rollers, and an outer drive ring in contact with another diameter of the planet rollers. An inner drive element is provided by a sun drive roller in contact with the planet rollers or by a planet carrier. Preferably the system has an axial reflective symmetry minimizing twisting forces on the planet rollers.

An apparatus includes a first ring having an open annular space and a variable-width groove disposed on an interior peripheral surface of the first ring; a second ring rotatable within the open annular space of the first ring, where the second ring has a respective variable-width groove disposed on an exterior peripheral surface of the second ring; and a plurality of rollers disposed between, and configured to roll on, the interior peripheral surface of the first ring and the exterior peripheral surface of the second ring and rotatable therebetween.

An axial end of an output shaft facing toward an input shaft has a first hole that is concentric with the output shaft and that axially extends to a predetermined depth. An axial end of the input shaft facing toward the output shaft has a second hole that is concentric with the input shaft and that axially extends to a predetermined depth. A connection pin is inserted in the first hole and the second hole to connect the first hole and the second hole. When the output shaft and the input shaft axially approach each other, the connection pin interposed between the output shaft and the input shaft allows the output shaft and the input shaft to avoid coming into contact with each other.

An axial end of an output shaft facing toward an input shaft has a first hole that is concentric with the output shaft and that axially extends to a predetermined depth. An axial end of the input shaft facing toward the output shaft has a second hole that is concentric with the input shaft and that axially extends to a predetermined depth. A connection pin is inserted in the first hole and the second hole to connect the first hole and the second hole. When the output shaft and the input shaft axially approach each other, the connection pin interposed between the output shaft and the input shaft allows the output shaft and the input shaft to avoid coming into contact with each other.

An accessory drive pulley assembly is configured to transfer rotational power from an engine crankshaft to one or more vehicle accessories. The accessory drive pulley has an inner race rotatable about an axis and having an outer surface. An outer race is located radially outward from the inner race and has an inner surface facing the inner race. A wedge plate is located radially between the outer surface and the inner surface. The wedge plate is configured to expand and contract radially to selectively lock and unlock the inner race with the outer race. When locked, an associated pulley can rotate at a different speed than when unlocked.

An accessory drive pulley assembly is configured to transfer rotational power from an engine crankshaft to one or more vehicle accessories. The accessory drive pulley has an inner race rotatable about an axis and having an outer surface. An outer race is located radially outward from the inner race and has an inner surface facing the inner race. A wedge plate is located radially between the outer surface and the inner surface. The wedge plate is configured to expand and contract radially to selectively lock and unlock the inner race with the outer race. When locked, an associated pulley can rotate at a different speed than when unlocked.