A clutch having two stages for applying varied torque between an input shaft and an output shaft includes a clutchpack having input friction plates and output friction plates. The clutch further includes a first spring configured to apply a first pressure to the clutchpack to compress the clutchpack. The clutch further includes a second spring configured to apply a second pressure to the clutchpack to compress the clutchpack. The clutch further includes an engagement nut configured to move in response to rotation of the output shaft relative to the input shaft to compress the second spring in order to increase an amount of the second pressure applied to the clutchpack.

A mortuary cargo loading system having a transport bed adjacent to a motorized winch, a cable engaged with and extending from the motorized winch, a cargo stopper comprising a first end, a second end, and a guide therebetween, and a cargo stopper support having at least one bore for receiving a cargo stopper. The mortuary cargo loading system further has the cargo stopper support and the motorized winch connected to a surface of a vehicle cargo space, the first end of the cargo stopper is engaged with the at least one bore, the cable is engaged with the guide, and the transport bed is connected to the cargo stopper support.

A clutch having two stages for applying varied torque between an input shaft and an output shaft includes a clutchpack having input friction plates and output friction plates. The clutch further includes a first spring configured to apply a first pressure to the clutchpack to compress the clutchpack. The clutch further includes a second spring configured to apply a second pressure to the clutchpack to compress the clutchpack. The clutch further includes an engagement nut configured to move in response to rotation of the output shaft relative to the input shaft to compress the second spring in order to increase an amount of the second pressure applied to the clutchpack.

The invention relates to a free fall winch comprising a drum, which can be rotationally driven by a winch drive, wherein a free fall brake is provided for braking the drum in free fall operation. According to the invention, a torque acting on the free fall winch, which depends on the free fall braking torque, is detected by means of a detection device, and a brake actuation force with which the free fall brake is actuated is controlled or adjusted by a control device according to the detected torque.

A mortuary cargo loading system having a transport bed adjacent to a motorized winch, a cable engaged with and extending from the motorized winch, a cargo stopper comprising a first end, a second end, and a guide therebetween, and a cargo stopper support having at least one bore for receiving a cargo stopper. The mortuary cargo loading system further has the cargo stopper support and the motorized winch connected to a surface of a vehicle cargo space, the first end of the cargo stopper is engaged with the at least one bore, the cable is engaged with the guide, and the transport bed is connected to the cargo stopper support.

Described herein are methods and systems to dampen oscillations of a payload coupled to a tether of a winch system arranged on an unmanned aerial vehicle (UAV). For example, the UAV's control system may dampen the oscillations by causing the UAV to switch to a forward flight mode in which movement of the UAV results in drag on the payload, thereby damping the oscillations. In another example, the control system may cause the UAV to reduce an extent flight stabilization along at least one dimension, thereby resulting in damping of the detected oscillations due to energy dissipation during movement of the UAV along the dimension. In this way, the control system could select and carry out one or more such techniques, and could do so during retraction and/or deployment of the tether.

Described herein are methods and systems to dampen oscillations of a payload coupled to a tether of a winch system arranged on an unmanned aerial vehicle (UAV). For example, the UAV's control system may dampen the oscillations by causing the UAV to switch to a forward flight mode in which movement of the UAV results in drag on the payload, thereby damping the oscillations. In another example, the control system may cause the UAV to reduce an extent flight stabilization along at least one dimension, thereby resulting in damping of the detected oscillations due to energy dissipation during movement of the UAV along the dimension. In this way, the control system could select and carry out one or more such techniques, and could do so during retraction and/or deployment of the tether.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.

A system for servicing a pulverizer includes a pulverizer having a housing, a journal assembly pivotally connected to the housing, a grinding mechanism operatively connected to the journal assembly, and an opening within the housing adjacent to the journal assembly and providing an access point to an interior of the housing, and a hoist apparatus mounted to the housing. The hoist apparatus includes a frame assembly received about the opening in the housing, a sheave assembly including a plurality of sheaves supported by the frame assembly, a motor operatively connected to one of the plurality of sheaves, and a cable received by the sheave assembly. The motor is operable to at least one of retract the cable through the sheave assembly to rotate a component out of the pulverizer through the opening and controllably let out the cable to rotate the component into the pulverizer through the opening.

A multi-cable subsea lifting system including two or more load-cable lifting apparatus (2a, 2b); a load cable (4a, 4b) extending from each load-cable lifting apparatus (2a, 2b) to a subsea attachment point; a torque measuring device (22) associated with each load cable (4a, 4b); one or more subsea anti-cabling devices (20), each anti-cabling device (20) including a motor (24) connected to a respective load cable (4a, 4b); and a controller (30) in communication with each motor (24) and torque measuring device (22); wherein the controller (30) is configured to actuate each motor (24) to impart a rotational force to its respective load cable (4a, 4b) in response to measurements obtained from the torque measuring device (22) with the aim to limit cabling, remove cabling or control heading either automatically or from external control.