Abstract: A device for securing a wheel nut on a wheel hub of a motor vehicle, in particular a wheel nut of a center lock on a motor vehicle wheel, wherein the device is designed in the manner of a securing cover, and wherein the securing cover has a cylindrical flange region, which rests at least over a certain area on the end of the hollow axle stub, and a cylindrical extension, which extends from the flange region in the direction of the axle stub, is provided with an external thread and interacts with an internal thread arranged in the hollow axle stub of the wheel hub.

Abstract: A heavy duty wheel-axle assembly for industrial trolley carts in which wheel assemblies are mounted at either end of an axle, an inner bearing race of each wheel positively non-rotationally secured to the axle by interengagement of a non-round shaped position of the axle fitting into a corresponding opening in the race. A hex shape on one end is used to fix one wheel assembly, held by a bolt threaded into a threaded axial bore in the one end of the axle. A pin is inserted into one of a series of axial hub in the hub outside face to engage one side of the bolt hex head. A tee head on the other end of the axle is fit into a recess in the outside face of the other but to establish a non-rotative connection.

Abstract: A fasting device has a shaft and a clamping assembling. The clamping assembly has an outer housing shaped so as to retain the object to be clamped in position and an inner core rotatably disposed within the outer housing and in threaded engagement with a hole in one of the outer housing. A sprag is disposed within the outer housing and located in a slot in the inner core, both the inner core and the sprag plate having through holes to receive the shaft. A bias spring biases the sprag into engagement with the inner core.

Abstract: A conveyor trolley with a pair of wheels rolling on a flat upper face of an upper end rail portion of a guide rail, one wheel acting as a drive wheel and attached to an output shaft of a speed-reducing unit mounted on a trolley body movably supported on the guide rail, and a motor for driving the output shaft via a speed-reducing mechanism in the speed-reducing unit, the trolley having a collector unit for supplying power to and communicating control signals with the motor, guide rollers for laterally binding and positioning the upper rail portion and a lower rail portion of the guide rail, a wheel securing unit disposed between an annular concave portion defined in a boss of the drive wheel and the output shaft, the wheel securing unit including an outer ring, an inner ring having a wedge-shaped cross section to be engaged into the outer ring and a tightening member for securing the wheels to the output shaft by reducing an inner diameter of the inner ring and by enlarging an outer diameter of the outer ring

Abstract: A laminated nut composed of laminations of tapped conical spring washer segments in which at least one of the segments has a different load-deflection ratio than another segment, thereby to provide for more uniform loading of the threads on the laminated segments, and to provide for self locking of the nut on the bolt by thread interference. A lock mechanism is also provided that automatically and positively locks the nut to the associated bolt, as is required for safety purposes and to avoid legal charges of product liability.