A screw device is provided which can detect damage to a groove of a screw shaft, the damage being hidden by a nut, with a high probability. At least two circulation components are mounted on a nut in such a manner as to form at least two circulation circuits that circulate rolling elements. The nut is provided with a sensor that detects a displacement of a groove of a screw shaft between the adjacent circulation circuits.

A screw device is provided which can detect damage to a groove of a screw shaft, the damage being hidden by a nut, with a high probability. At least two circulation components are mounted on a nut in such a manner as to form at least two circulation circuits that circulate rolling elements. The nut is provided with a sensor that detects a displacement of a groove of a screw shaft between the adjacent circulation circuits.

A piston actuation device for the supply of a pressure medium in a pressure medium circuit of a brake system of a motor vehicle. A piston actuation device includes a piston actuable by a spindle drive to execute a back-and-forth translation movement in the direction of a piston guidance axis. The spindle drive has a spindle nut and a spindle that cooperates with the spindle nut via a screw drive. The screw drive converts a rotation movement of the spindle nut into a translation movement of the spindle in the direction of a spindle movement axis. To transmit the translation movement to the piston, the piston and the spindle are connected to each other in an axially fixed manner. The axially fixed connection between the piston and the spindle includes an articulated joint, which allows for a concentricity deviation between the piston guidance axis and the spindle movement axis.

A piston actuation device for the supply of a pressure medium in a pressure medium circuit of a brake system of a motor vehicle. A piston actuation device includes a piston actuable by a spindle drive to execute a back-and-forth translation movement in the direction of a piston guidance axis. The spindle drive has a spindle nut and a spindle that cooperates with the spindle nut via a screw drive. The screw drive converts a rotation movement of the spindle nut into a translation movement of the spindle in the direction of a spindle movement axis. To transmit the translation movement to the piston, the piston and the spindle are connected to each other in an axially fixed manner. The axially fixed connection between the piston and the spindle includes an articulated joint, which allows for a concentricity deviation between the piston guidance axis and the spindle movement axis.

A system includes a linear guide, drive device, spindle nut and spindle extending along an axis. The spindle nut is arranged on the spindle, with the spindle nut and spindle engaged. The drive device connects to the spindle nut in a torque-proof manner to rotate the spindle nut about the axis, moving the spindle parallel to the axis. The spindle has a spindle groove extending parallel to the axis on an outer circumferential side. The linear guide includes a guide housing arranged in a torque-proof manner, and a ledge element. The guide housing has a radially outwardly extending receptacle. The ledge element includes a radially outwardly disposed carrier and a ledge radially inwardly of the carrier, connected to the carrier and extending parallel to the axis. The ledge element engages the carrier in the receptacle and the ledge in the spindle groove, guiding the spindle parallel to the axis.

A hand operated tool for binding a load. The tool including a hollow tube with interior left hand and right hand threads at opposing ends. Opposing rods with exterior threads on one end and a releasable connection device on the other end that is screwed into each end of the tube. A gear rigidly mounted and encircling the tube allowing a pivotly attached ratcheting U-pawl to engage the gear teeth, the U-pawl attached to and carried by a handle assembly mounted on each side of the gear, the handle protruding perpendicular from the tube. The handle turning the tube in a first rotational direction drawing the rods closer together tightening the bind, the handle turning the tube in a second rotational direction moving the rods farther apart loosening the bind, the rods remaining stationary in rotation during rotation of the tube. A blocking device may be installed to prevent the U-pawl from pivoting into a position to turn the tube in the second rotational direction, that would loosen the bind on the load, the blocking device allowing normal ratcheting and turning of the tube in the first rotational direction tightening the bind on the load. A recessed-pawl partially pivoting independently of the U-pawl and engaging with the gear to prevent the tube from turning in the second-rotational-direction that would loosen the bind on the load when the U-pawl is in a neutral position whereby the U-pawl is not engaged with the gear. In addition, a tension-detecting-device suitable to detect or measure the tension on the ratchet load binder rods and also monitor and communicate the tension to the operator is also provided.

A hand operated tool for binding a load. The tool including a hollow tube with interior left hand and right hand threads at opposing ends. Opposing rods with exterior threads on one end and a releasable connection device on the other end that is screwed into each end of the tube. A gear rigidly mounted and encircling the tube allowing a pivotly attached ratcheting U-pawl to engage the gear teeth, the U-pawl attached to and carried by a handle assembly mounted on each side of the gear, the handle protruding perpendicular from the tube. The handle turning the tube in a first rotational direction drawing the rods closer together tightening the bind, the handle turning the tube in a second rotational direction moving the rods farther apart loosening the bind, the rods remaining stationary in rotation during rotation of the tube. A blocking device may be installed to prevent the U-pawl from pivoting into a position to turn the tube in the second rotational direction, that would loosen the bind on the load, the blocking device allowing normal ratcheting and turning of the tube in the first rotational direction tightening the bind on the load. A recessed-pawl partially pivoting independently of the U-pawl and engaging with the gear to prevent the tube from turning in the second-rotational-direction that would loosen the bind on the load when the U-pawl is in a neutral position whereby the U-pawl is not engaged with the gear. In addition, a tension-detecting-device suitable to detect or measure the tension on the ratchet load binder rods and also monitor and communicate the tension to the operator is also provided.

An actuating mechanism for actuating a gearbox emergency release of a gearbox of a motor vehicle having a parking lock and being mechanically locked by means of the parking lock when the parking lock is activated, having at least one actuating element fixed to the vehicle, by means of which the parking lock can be manually and mechanically deactivated, and having a tool formed separate from the actuating element, by which the actuating element can be manually and mechanically activated for the manual deactivating of the parking lock, wherein the tool comprises a threaded spindle and at least one corresponding movement element, which can be moved by a relative rotation between the threaded spindle and the movement element in translation along the threaded spindle and relative to it, in order to thereby actuate the actuating element.

An actuating mechanism for actuating a gearbox emergency release of a gearbox of a motor vehicle having a parking lock and being mechanically locked by means of the parking lock when the parking lock is activated, having at least one actuating element fixed to the vehicle, by means of which the parking lock can be manually and mechanically deactivated, and having a tool formed separate from the actuating element, by which the actuating element can be manually and mechanically activated for the manual deactivating of the parking lock, wherein the tool comprises a threaded spindle and at least one corresponding movement element, which can be moved by a relative rotation between the threaded spindle and the movement element in translation along the threaded spindle and relative to it, in order to thereby actuate the actuating element.

A supported spindle for a device equipped with a spindle nut. The supported spindle includes a spindle body extending along its center longitudinal axis, a support plate, which is welded onto the spindle body in such a way that a weld seam formed between the spindle body and the support plate extends around the center longitudinal axis of the spindle body, and a ring element framing a section of the center longitudinal axis of the spindle body, which contacts the support plate on at least one first contact surface of the ring element and contacts the spindle body on at least one second contact surface of the ring element in such a way that the ring element is clamped between the support plate and the spindle body.