Winch (1) comprising a drum (2), a cable (6) which can be wound around the drum (2), means (7) for fastening the load (20) to the cable (6), a motor (3) with a motor shaft (4), a control (17) for the motor (3) that drives the motor shaft (4) to rotate in two opposite directions, and mechanical transmission means (5) for transmitting the rotational movement of the motor shaft (4) to the drum (2), said means (5) being configured so as to allow, in the state in which the motor shaft (4) is driven to rotate in a first direction D1, the transmission of the rotational movement of the motor shaft (4) to the drum (2) in the direction of winding the cable (6) around the drum (2). In the state in which the motor shaft (4) is driven to rotate in the second direction D2, the mechanical movement transmission means (5) are configured so as to not allow the transmission of the rotational movement of the motor shaft (4) to the drum (2), and at least part of these mechanical means (5) is configured to form, in this second operating mode, a brake preventing the drum (2) from being driven to rotate.

Winch (1) comprising a drum (2), a cable (6) which can be wound around the drum (2), means (7) for fastening the load (20) to the cable (6), a motor (3) with a motor shaft (4), a control (17) for the motor (3) that drives the motor shaft (4) to rotate in two opposite directions, and mechanical transmission means (5) for transmitting the rotational movement of the motor shaft (4) to the drum (2), said means (5) being configured so as to allow, in the state in which the motor shaft (4) is driven to rotate in a first direction D1, the transmission of the rotational movement of the motor shaft (4) to the drum (2) in the direction of winding the cable (6) around the drum (2). In the state in which the motor shaft (4) is driven to rotate in the second direction D2, the mechanical movement transmission means (5) are configured so as to not allow the transmission of the rotational movement of the motor shaft (4) to the drum (2), and at least part of these mechanical means (5) is configured to form, in this second operating mode, a brake preventing the drum (2) from being driven to rotate.

The present invention relates to a flexible air duct winding and unwinding device for air supply, including an air duct reel assembly, a flexible air duct, two reel seats, a rotating air inlet assembly and a rotating drive assembly for driving the rotation of the air duct reel assembly; the air duct reel assembly includes a reel body, a reel air duct shaft, and a reel rotating shaft, the rotating air inlet assembly includes an inlet air duct, a fixed air duct and a rotating air duct rotatably inserted in the fixed air duct, the air outlet end of the inlet air duct is connected with the air inlet end of the fixed air duct, the air outlet end of the rotating air duct is fixedly connected with the reel air duct shaft, and the output shaft of the rotating drive assembly is fixedly connected with the reel rotating shaft.

The present invention relates to a flexible air duct winding and unwinding device for air supply, including an air duct reel assembly, a flexible air duct, two reel seats, a rotating air inlet assembly and a rotating drive assembly for driving the rotation of the air duct reel assembly; the air duct reel assembly includes a reel body, a reel air duct shaft, and a reel rotating shaft, the rotating air inlet assembly includes an inlet air duct, a fixed air duct and a rotating air duct rotatably inserted in the fixed air duct, the air outlet end of the inlet air duct is connected with the air inlet end of the fixed air duct, the air outlet end of the rotating air duct is fixedly connected with the reel air duct shaft, and the output shaft of the rotating drive assembly is fixedly connected with the reel rotating shaft.

A method for passive aerial cord release mechanisms and an aerial cord release mechanism for an aerial vehicle (AV). A method includes determining a retracting force to be applied to a winch of an aerial vehicle (AV), wherein the determined retracting force is a force required to retract a cord to be coiled around the winch within the AV, and the cord is temporarily coupled to the winch, such that an external force exceeding a predetermined threshold causes decoupling between the cord and the winch.

A method for passive aerial cord release mechanisms and an aerial cord release mechanism for an aerial vehicle (AV). A method includes determining a retracting force to be applied to a winch of an aerial vehicle (AV), wherein the determined retracting force is a force required to retract a cord to be coiled around the winch within the AV, and the cord is temporarily coupled to the winch, such that an external force exceeding a predetermined threshold causes decoupling between the cord and the winch.

The present invention is directed to a self-locking non-backdrivable gear system. The gear system may comprise a primary motor input and gear box. The primary motor input is for rotation of the gearbox about the axis of a drive shaft. The gearbox may comprise an input ring gear, one or more locking gears, fixed gear, and output gear. In operation, rotation of the primary motor input causes rotation of the ring gear which causes rotation of the locking gear which causes rotation of the output gear which causes rotation of the drive shaft. However, in the absence of rotation of the ring gear, a rotational force applied to the output gear causes the gear teeth on the fixed and output gears to lock the gear in place.

The present invention is directed to a self-locking non-backdrivable gear system. The gear system may comprise a primary motor input and gear box. The primary motor input is for rotation of the gearbox about the axis of a drive shaft. The gearbox may comprise an input ring gear, one or more locking gears, fixed gear, and output gear. In operation, rotation of the primary motor input causes rotation of the ring gear which causes rotation of the locking gear which causes rotation of the output gear which causes rotation of the drive shaft. However, in the absence of rotation of the ring gear, a rotational force applied to the output gear causes the gear teeth on the fixed and output gears to lock the gear in place.

The present invention is directed to a self-locking non-backdrivable gear system. The gear system may comprise a primary motor input and self-lubricating gear box. The primary motor input is for rotation of the gearbox about the axis of a drive shaft. The gearbox may comprise an input ring gear, one or more planet locking gears, fixed spur gear, and output spur gear. In operation, rotation of the primary motor input causes rotation of the ring gear which causes rotation of the planet locking gear which causes rotation of the output spur gear which causes rotation of the drive shaft. However, in the absence of rotation of the ring gear, a rotational force applied to the output spur gear causes the gear teeth on the fixed and output spur gears to lock the planet gear in place.

Disclosed is a motorized winch system having a frame, a motor, and a drum with a first end and a second end connected to the motor. The system has a winch cable configured to wind around the drum with a first end connected to the drum, having a winding portion and a distal portion. The system has a winch cable locator assembly with a cam bar rotatably mounted to the frame, a cam follower connected to the cam bar such that the cam follower slides from the first end to the second end of the drum and reverses to slide back to the first end of the drum, and a cable guide coupled to the cam follower, configured to guide the cable onto the drum. The system has a removable cam gear with an operating position operably connected to the motor, and a manual position disconnected from the motor.