A wire puller may be provided. The wire puller may comprise a middle portion, a restraint frame, and a front portion. The middle portion may comprise a gear box, a front bracket, a back bracket, and a capstan. The gear box may comprise a drive shaft and the capstan may comprise a hook pin. The restraint frame may be attached to the back bracket. The front portion may be attached to the front bracket. The front portion may comprise a pivot frame, a tube, an arm, a first side plate, a second side plate, a roller, and a flip out support. The pivot frame may comprise a locking mechanism.

The removable roof system includes a set of guy ropes (10), each of the guy ropes extending between a top anchor point (2) and a bottom anchor point (3) of a structure to be covered, a velum (1) mobile between a deployed configuration in which the velum covers the structure to be covered and a retracted configuration in which the structure to be covered is uncovered, and a set of carriages (20) to which the velum is attached, arranged so as to be moved along the guy ropes of the set of guy ropes between the top and bottom anchor points in order to cause the velum to pass between its deployed and retracted configurations and comprising for each of the guy ropes of the set of guy ropes at least one motorized carriage, at least one motorized carriage cooperating with the associated guy rope by meshing or by alternating wedging.

Winch with a grip pulley for moving along a lifting strand, in particular a rope or cable, including a frame; a drive pulley with a single groove mounted on said frame; a guide means capable of guiding the lifting strand under tension from the upper region of said frame towards the lower region thereof, the guide means comprising on the lower region side of said frame a guide pulley close to the drive pulley and transferring the taut lifting strand onto the drive pulley; a clamping pulley, close to said guide pulley, exerting pressure on the lifting strand towards said drive pulley and acting on the wrapped end of the lifting strand on said pulley on the free strand side.

This device comprises a drum (42) to be driven in rotation about a central axis (B-B′), wherein the drum (42) defines a circumferential casing (50) for winding the elongate element around the central axis (B-B′), wherein the elongate element is intended to form at least one turn around the central axis (B-B′) on the circumferential casing (50). It comprises a mechanism (44) for driving the turn(s) of the elongate element along the circumferential casing (50). The drive mechanism (44) comprises at least one assembly (80) following movement of the turn in a direction of movement (D) forming a non-zero angle with the local axis of the turn, taken at a contact region of the turn on the movement assembly (80).

The present invention relates to a safety arrangement for a portable power driven system, such as an ascender/descender arrangement, specifically in relation to safety means for minimizing risks with items rotating during the operation of the power driven system.

A winch assembly is described and shown herein. The winch assembly may include a first housing member having a first retaining member formed therein and a second housing member having a second retaining member formed therein, the second housing member secured to the first housing member forming a winch housing. The winch assembly may further include a drive system generally positioned within the winch housing, and a winch drum operatively coupled with the drive system and rotationally secured with the first and second retaining members.

A road barrier transfer machine includes an improved capstan control system that reduces unwanted migration of road barrier spans without requiring inaccurate visual observations and reliance on outdated scripts. The barrier transfer machine includes a moveable chassis, an entry snout, an exit snout, a conveyor system, a capstan system, and the capstan control system. The capstan control system automatically operates the capstan system or provides instructions to an operator of the machine to maintain the tension and compression of a road barrier span within desired ranges to reduce unwanted migration of the span.

The present invention relates to a portable power-driven system, such as an ascender/descender arrangement, specifically in relation to means for ensuring that a rope used in relation to the portable power-driven system is securely handled when in the operational state.

A cable drive system having a cable drum housing, a cable drum unit mounted therein for rotation by a drive motor, a first control cable and a second control cable. The first and second control cables are each windably held on the cable drum unit for the purpose of driving the protection device. The first control cable is guided out of a first housing part of the cable drum housing along a first direction, and the second control cable is guided out of a separate, second housing part of the cable drum housing along a second direction. Different mounting positions of the first housing part are provided in which the first housing part is in different rotational positions relative to the second housing part, with the result that the first guidance direction has a different orientation than the second guidance direction in the different mounting positions.

A slide-out room system includes a motor-driven sheath with wound cables for extending and retracting the slide-out room. The cables and the sheath are configured such that rotation of the sheath in one direction displaces the cables to extend the room and such that rotation of the sheath in an opposite direction displaces the cables to retract the room.