Dual action magnetic brakes and related methods are provided. In one aspect, such a brake includes a housing, a rotatable shaft extending through the housing, and a braking assembly in the housing. The braking assembly includes a coil and a braking member. The coil can generate a magnetic field when energized with electrical current. The braking member, and one or more flexible members attached thereto, can move in response to the presence or absence of the magnetic field to facilitate rotation or non-rotation of the shaft.

Dual action magnetic brakes and related methods are provided. In one aspect, such a brake includes a housing, a rotatable shaft extending through the housing, and a braking assembly in the housing. The braking assembly includes a coil and a braking member. The coil can generate a magnetic field when energized with electrical current. The braking member, and one or more flexible members attached thereto, can move in response to the presence or absence of the magnetic field to facilitate rotation or non-rotation of the shaft.

A bale wrapping device for a round baler includes a drive roller by which a wrapping material is able to be unrolled from a wrapping material roller. The drive roller is connected to a drive and brake apparatus. The drive and brake apparatus is connected to a brake belt which is able to be tensioned in a variable manner. The bale wrapping device further comprises a tensioning lever apparatus and the brake belt is connected to the tensioning lever apparatus. The pre-tensioning of the brake belt is adjustable by means of the tensioning lever apparatus between at least three different pre-tensionings.

A bale wrapping device for a round baler includes a drive roller by which a wrapping material is able to be unrolled from a wrapping material roller. The drive roller is connected to a drive and brake apparatus. The drive and brake apparatus is connected to a brake belt which is able to be tensioned in a variable manner. The bale wrapping device further comprises a tensioning lever apparatus and the brake belt is connected to the tensioning lever apparatus. The pre-tensioning of the brake belt is adjustable by means of the tensioning lever apparatus between at least three different pre-tensionings.

The invention relates to a bearing assembly (10) comprising at least one first bearing element (12) and a second bearing element (14) which are rotatably connected relative to each other along a common longitudinal axis (14). The bearing assembly (10) comprises a brake device (18) which inhibits the rotation of the two bearing elements (12) relative to each other by means of a frictional force produced by the brake device (18), wherein the brake device (18) has at least one frictional element (20) and at least one clamping device (22), by means of which the frictional element (20) is permanently clamped against one of the two bearing elements (12). The bearing assembly also comprises a coupling device (30) which can be moved between an open state and a closed state. In the closed state, the brake device (18) is engaged, whereby when the two bearing elements (12) rotate relative to each other, the rotation is inhibited by the frictional force produced by the brake device (18), and in the open state, the brake device (18) is disengaged.

A window blind assembly includes a frame, an input shaft rotatably disposed in the frame, a blind unit, a winding unit for placing the blind unit in a retracted state when the input shaft is rotated in a first rotational direction and for shifting the blind unit to an expanded state when the input shaft is rotated in a second rotational direction, a control unit operable to drive rotation of the input shaft in the first and second rotational directions, a force-assisting unit having a spring capable of exerting a spring force on the control unit to resist the weight of the blind unit acting thereon, and a brake unit connected to the input shaft and generating a frictional force to resist rotation of the input shaft in the second rotational direction.

A positive positioning device comprises a plurality of stacked plates, a body, a spring-biased piston and a piston release device. The plurality of stacked plates have a central opening defined to receive a pivot shaft. The body houses the plurality of stacked plates and has an internal bore within which a cylinder is defined. The spring-biased piston is shaped to slide within the bore to apply a force to the stacked plates to resist rotation of a pivot shaft inserted through the central opening in the stacked plates. The piston release device is actuatable by a user to release the piston to decrease force applied to the stacked plates and allow free rotation of the pivot shaft.

Implementations relate to a brake mechanism for a spherical wheel. In some implementations, a wheel mechanism includes a spherical wheel and a base coupled to the spherical wheel via a rotary bearing contacting a surface of the spherical wheel, where the rotary bearing is configured to allow the spherical wheel to rotate. The wheel mechanism includes a brake ring coupled to the base and configured to selectively engage and disengage the surface of the spherical wheel, where the brake ring provides friction opposing rotation of the spherical wheel when engaged.

Implementations relate to a brake mechanism for a spherical wheel. In some implementations, a wheel mechanism includes a spherical wheel and a base coupled to the spherical wheel via a rotary bearing contacting a surface of the spherical wheel, where the rotary bearing is configured to allow the spherical wheel to rotate. The wheel mechanism includes a brake ring coupled to the base and configured to selectively engage and disengage the surface of the spherical wheel, where the brake ring provides friction opposing rotation of the spherical wheel when engaged.

A drive system for an agricultural baler that includes a power take off (PTO) shaft configured for being operably connected in between an agricultural vehicle and the agricultural baler and for supplying motive power to the agricultural baler, a gearbox configured for being mounted on the agricultural baler and connected to the PTO shaft for receiving motive power from the PTO shaft, a pickup drive shaft operably connected to the gearbox and configured for being operably connected to a reel of a pickup unit of the agricultural baler, at least one sensor associated with the pickup drive shaft and configured for sensing a rotational movement of the pickup drive shaft, and an electrical processing circuit operably connected to the at least one sensor. The electrical processing circuit is configured for disconnecting motive power to the reel.