An anti-rotational locking apparatus for locking an elongate rotatable element in a particular rotational position with respect to a housing include: a sleeve having an internal profile for slidably receiving therethrough a rotatable elongate element having a portion with an external profile configured to positively engage with the internal profile of the sleeve; a housing; and a locking pin. The sleeve has a flange with a first opening therein and the housing has a second opening therein, the locking pin being insertable in the openings. The flange is arranged for slidable alignment with the second opening in the housing such that when the openings are aligned, the locking pin may be inserted in the openings to lock the flange to the housing and thereby prevent rotation of the flange and of an elongate element extending therethrough and engaged therewith with respect to the housing.

An anti-rotational locking apparatus for locking an elongate rotatable element in a particular rotational position with respect to a housing include: a sleeve having an internal profile for slidably receiving therethrough a rotatable elongate element having a portion with an external profile configured to positively engage with the internal profile of the sleeve; a housing; and a locking pin. The sleeve has a flange with a first opening therein and the housing has a second opening therein, the locking pin being insertable in the openings. The flange is arranged for slidable alignment with the second opening in the housing such that when the openings are aligned, the locking pin may be inserted in the openings to lock the flange to the housing and thereby prevent rotation of the flange and of an elongate element extending therethrough and engaged therewith with respect to the housing.

The invention relates to a ratchet tightener for tensioning chains, belts and similar, comprising two end pieces 3 and 4 between which a lead screw 2 is arranged and screwed to same, wherein the axial distance between said end pieces 3 and 4 can be altered by rotating the lead screw 2 by means of a ratchet, characterised in that the threaded rod 8 is in the form of a tube into which the threaded rod 7 can descend.

The invention relates to a ratchet tightener for tensioning chains, belts and similar, comprising two end pieces 3 and 4 between which a lead screw 2 is arranged and screwed to same, wherein the axial distance between said end pieces 3 and 4 can be altered by rotating the lead screw 2 by means of a ratchet, characterised in that the threaded rod 8 is in the form of a tube into which the threaded rod 7 can descend.

According to an embodiment, a device for tightening an article includes a housing, a spool rotatably positioned within the housing, a knob operably coupled with the spool to cause the spool to rotate within the housing, and a stop mechanism. The device is configured so that incremental rotation of the knob in a first direction causes a corresponding incremental rotation of the spool within the housing that incrementally tensions a tension member and thereby tightens the article. The device is also configured so that incremental rotation of the knob in a second direction causes a corresponding incremental rotation of the spool that incrementally loosens the tension member's tension. The stop mechanism is configured to prevent rotation of the spool in the second direction when the tension member's tension achieves or falls below a tension threshold.

According to an embodiment, a device for tightening an article includes a housing, a spool rotatably positioned within the housing, a knob operably coupled with the spool to cause the spool to rotate within the housing, and a stop mechanism. The device is configured so that incremental rotation of the knob in a first direction causes a corresponding incremental rotation of the spool within the housing that incrementally tensions a tension member and thereby tightens the article. The device is also configured so that incremental rotation of the knob in a second direction causes a corresponding incremental rotation of the spool that incrementally loosens the tension member's tension. The stop mechanism is configured to prevent rotation of the spool in the second direction when the tension member's tension achieves or falls below a tension threshold.

Expandable heavy equipment 1, comprising a first frame element 5, a connector 11, at least one elongated pull element 14, and further frame elements 7. The pull element 14 is connected to the first frame element 5 with a first coupler 31 and to one 9 of the further frame elements 7 with a second coupler 35. The pull element 14 is in a folded state in a transport condition and in an extended state in a working condition. The pull element 14 comprises load bearing fibers/fibres 141 extending from the first coupler 31 to the second coupler 35. The pull element 14 comprises at least one flexible part 43 and at least two stiff parts 45. The flexible part 43 has a lower bending stiffness than the two stiff parts 45 and enables the pull element 14 to be arranged in the folded state.

Expandable heavy equipment 1, comprising a first frame element 5, a connector 11, at least one elongated pull element 14, and further frame elements 7. The pull element 14 is connected to the first frame element 5 with a first coupler 31 and to one 9 of the further frame elements 7 with a second coupler 35. The pull element 14 is in a folded state in a transport condition and in an extended state in a working condition. The pull element 14 comprises load bearing fibers/fibres 141 extending from the first coupler 31 to the second coupler 35. The pull element 14 comprises at least one flexible part 43 and at least two stiff parts 45. The flexible part 43 has a lower bending stiffness than the two stiff parts 45 and enables the pull element 14 to be arranged in the folded state.

The invention is directed to a toggle 1 for rigging of a boat or a crane, comprising a first coupling end 100 comprising a first coupling means 110 having a first axis of engagement 120 and a second coupling end 200 comprising a second coupling means 210 having a second axis of engagement 220. The first and the second coupling means 100, 200 are arranged a distance apart from each other. A closed-loop connecting means 300 is made from a fibre-reinforced plastic. The closed-loop connecting means 300 is looped about the first axis of engagement 120 and about the second axis of engagement 220, mechanically interconnecting the first coupling means 110 with the second coupling means 210.

A wire strainer including a drive means having a mounting block with a drum mounted for rotation relative thereto, and an actuation means connected to the drum for selectively causing the drum to rotate relative to the mounting block. A line member is operatively connected to the drum in a manner such that rotation of the drum in one direction causes the drum to pull the line member relative to the mounting block. Locking means is operatively connected to the mounting block and adapted to selectively lock the drum against rotation in the opposite direction. Gripping means is operatively connected to the mounting block, wherein the gripping means is adapted to be releasably attached to a wire to be strained. The line member includes securing means for releasably securing the line member to a strainer post or similar anchor.