Abstract: A walkway assembly (10) for attachment to a support structure such as a roof of a building includes a primary support (13) for on-site attachment to the support structure, a plurality of tread modules (41) each attached relative to the primary support and moveable between a first position and a second position at which a part of each tread module is spaced further from the primary support than when at the first position, and at least one riser unit (48) for supporting the tread modules relative to the primary support in at least the second of the first and second positions.

Abstract: A tread module (10) for a walkway or stairway includes a body of material which defines a load-carrying surface (14), the tread module including at least two sub-module sections (20,21,22) which are formed integrally with one another and inter-connected by at least one severable formation (23) whereby the tread module may be reduced in size by severance of the severable formation(s).

Abstract: A buckle for use with a safety harness includes a plurality of slots each for receiving an end of a harness belt section, each slot having associated therewith a retainer which is moveable into and out of engagement with an abutment surface defined by the end of a belt section, first bias elements normally to urge the retainers to move to a position at which they each engage with an abutment surface of the end of a belt section following insertion into a slot, at least one of the retainers having associated therewith a lever which is pivotable against the action of the first bias elements to move the retainer to a release position at which it is free from engagement with the abutment surface, and an actuation member operable to act on the or each lever whereby the or each lever moves a retainer to the release position.

Abstract: A walkway assembly (10) for attachment to a support structure such as a roof of a building includes a primary support (13) for on-site attachment to the support structure, a plurality of tread modules (41) each attached relative to the primary support and moveable between a first position and a second position at which a part of each tread module is spaced further from the primary support than when at the first position, and at least one riser unit (48) for supporting the tread modules relative to the primary support in at least the second of the first and second positions.

Abstract: A buckle for use with a safety harness includes a plurality of slots each for receiving an end of a harness belt section, each slot having associated therewith a retainer which is moveable into and out of engagement with an abutment surface defined by the end of a belt section, first bias elements normally to urge the retainers to move to a position at which they each engage with an abutment surface of the end of a belt section following insertion into a slot, at least one of the retainers having associated therewith a lever which is pivotable against the action of the first bias elements to move the retainer to a release position at which it is free from engagement with the abutment surface, and an actuation member operable to act on the or each lever whereby the or each lever moves a retainer to the release position.

Abstract: A tread module (10) for a walkway or stairway includes a body of material which defines a load-carrying surface (14), the tread module including at least two sub-module sections (20,21,22) which are formed integrally with one another and inter-connected by at least one severable formation (23) whereby the tread module may be reduced in size by severance of the severable formation(s).

Abstract: A spreader bar device for a patient handling hoist includes a housing connectable to a hoist, a spool which is rotatably mounted on the housing, an elongate flexible hoist attachment element attachable to the hoist and which is extendably windable on the spool, opposing elongate spreader arms which extend from the housing, and a harness attachment element by which a patient harness is attachable to the spreader arms. The spreader arms are pivotable about the housing whereby an angular spacing between the longitudinal extents of the arms is adjustable so that the arms have a plurality of selectable working positions.