Abstract: A rotational coupling device for use as a clutch and/or brake is provided having improved magnetic efficiency and structural integrity. A permanent magnet is coupled to one of a brake plate and an armature and axially aligned with a portion of the other for improved braking performance.

Abstract: A fluid actuated rotational coupling device is provided with improved sealing of fluid passages. The device includes a fluid actuated rotational coupling that is disposed on a rotatable shaft. The coupling defines a fluid port. A key is received within a keyway in the coupling and/or shaft and defines a fluid passage extending therethrough having fluid ports at either end aligned with the fluid port in the coupling and a fluid port in the shaft. The key also defines grooves formed in surfaces of the key and surrounding the fluid ports. Seals are disposed within the grooves in the key. By locating the fluid passage and seals in the key, the seals may be removed and replaced without removing the coupling from the shaft. Further, the seals are less likely to be damaged during installation of the coupling device on the shaft.

Abstract: An adjustable fluid cooled brake is provided that integrates the driven shaft and bearings with braking components to form a packaged assembly. The brake includes a driven shaft and two bearings disposed about the driven shaft. The brake further includes a housing disposed about the shaft and friction plates coupled to the housing and driven shaft. One end cap assembly of the brake is coupled to the housing and supports one of the bearings. The end cap assembly includes a pressure plate configured to compress the friction plates. Another end cap assembly is coupled to the housing and supports the other bearing. One of end cap assemblies is spaced from the housing by a spacer that may be adjusted to enable axial movement of the end cap assembly relative to the housing and the corresponding bearing thereby permitting adjustment of the brake.

Abstract: An industrial brake is provided through which tension and emergency braking are initiated at opposite axial ends of the brake in order to improve packaging and maintenance of the brake and to enable the addition of an emergency brake function to existing tension brakes without substantial modifications to the brake. The brake includes a housing disposed about a driven shaft and friction plates coupled to the housing and the shaft respectively. One friction plate comprises a liquid cooled fluid jacket. One end cap assembly is disposed at one axial end of the housing and provides a tension brake function. Another end cap assembly is disposed at the opposite axial end of the housing and provides an emergency brake function.

Abstract: A rotational coupling device for use as a clutch and/or brake is provided having a construction enabling improved torque transfer characteristics. The device includes a rotor rotatably coupled to an input shaft and an armature coupled to an output member and configured for selective engagement with the rotor. The rotor includes a hub having a central bore into which the input shaft extends. A support member, such as a spacer or pulley hub is coupled to the rotor hub using an axially projecting lug and notch construction. The structure of the device provides greater clearance for the input shaft and may eliminate the need for keys on the support member.

Abstract: A rotational coupling device for use as a clutch and/or brake is provided having improved magnetic efficiency and structural integrity. A field shell and a rotor of the device each define radially spaced, axially extending inner and outer poles. The inner pole of the rotor is disposed radially outwardly of the inner pole of the field shell resulting in improved magnetic efficiency.

Abstract: The present invention relates to a bi-directional overrunning clutch that enables movement of an object between multiple rotational bodies in either direction using a single motor. The clutch includes a pair of cam discs disposed about a driven shaft extending from the motor and spaced from one another, outer races disposed outwardly of each cam disc and rollers disposed between the cam discs and outer races. The cam discs are oriented such that rotation of the shaft in one rotation direction causes rotation of one outer race and freewheeling of the other outer race while rotation of the shaft in the opposite rotational direction causes rotation of the other outer face and freewheeling of the one outer race.

Abstract: A fluid jacket for a disc brake is provided that promotes a balanced flow of cooling fluid throughout the fluid jacket to most effectively remove heat from the disc brake. The fluid jacket includes an annular body configured for engagement with a friction surface. The annular body defines a plurality of concentric flow passages. The annular body further defines first and second axial flow passages in fluid communication with first and second flow passages, respectively of the plurality of concentric flow passages, with the first and second flow passage separated by a third concentric flow passage. The annular body further defines a radial flow passage extending between the first and second axial flow passages, and a fluid inlet in fluid communication with the radial flow passage.

Abstract: The present invention relates to a drive assembly including an adapter that enables the use of a lightweight backstopping clutch with a driven shaft. The adapter is coupled to the driven shaft for rotation therewith and forms a stub shaft smaller than the driven shaft. The clutch has an inner race that is disposed about the stub shaft and an outer race fixed against rotation so as to allow rotation of the stub shaft and driven shaft in one direction and inhibit rotation in an opposition direction.