Abstract: This is a trestle support bracket comprised of a main member referred to as a bracket housing, which is coupled to the trestle cross-beam and a second member, referred to as the wedge. The bracket housing is a four sided, open bottomed, walled frustum with inside surfaces (ridged) as the opposing inclined leg contact walls. The wedge member has an included angle which matches that of the inclined, ridged surfaces of the bracket housing. When trestle support legs are placed in position in the bracket housing and the wedge member is inserted between the legs, a bolt passing through the central hole of the wedge member and engaging the central threaded hole of the bracket housing will, when tightened, firmly secure the legs to the housing in an absolutely rigid manner.
Abstract: The present invention relates to a scaffold deck of simplified construction. The scaffold deck has two parallel side rails connected at the ends by means of parallel transom members. Hook members are provided at the junction of the transom and side rail members with the fasteners for each hook member commonly securing the respective transom and side rail. The side rails at the opposed interior edges include a substrate engaging slot extending in the length of the side rails and have an edge region beyond the substrate which forms part of the top working surface of the scaffold deck. The scaffold deck advantageously uses the side rails for forming an edge region of the scaffold deck whereby the amount of substrate between the side rails is reduced thereby reducing cost and improving the weight of the scaffold deck.
Abstract: A device for supporting the lower ends of ladder stiles on unlevel ground comprises a flat flexible mat (7) having at one end a ramp portion (1). In use, one stile rests on the flat mat and the other rests, at an appropriate height on the ramp portion, which faces the wall against which the ladder leans.
Abstract: A stabilized ladder power winch assembly includes a winch mounting subassembly with two channeled portions, a reversible mount bracket subassembly with a cantilevered portion, a tiltable prop subassembly having a safety rung support extension, a frame and corresponding and aligned handle and leg portions, and a stabilizer subassembly with lateral support portions. Each of the subassemblies is attached or mounted in combination with a conventional ladder for cooperating to raise an object from the ground or a base surface to the roof of a building or elevated surface. The winch mounting subassembly is mounted on a consecutive pair of rungs of a ladder and supports a conventional winch with a hoist line in a secure position for lifting an object.
Abstract: A lineman's safety strap assembly for attachment to a body belt, comprises: a pole strap having two ends; a cross belt strap extending between the two ends of the pole strap in order to form therewith a loop; the loop being able to open and close in order to engage and disengage the loop to and from a utility pole; two side straps; coupling clips for detachably connecting each side straps to the body belt; and connectors for connecting the side straps, cross-belt strap and pole strap together in such a manner that a lineman wearing the body belt is retained by the loop when the loop is closed around the pole and the body belt is connected to the side straps; at least one of the side straps being integral and continuous with the cross belt strap; the connectors means comprising a belt slide rigidly connected to at least one of the ends of the pole strap, for receiving and slidably holding the cross-belt strap.
Abstract: A safety cage utilized in connection with a cargo container hoisting bridle crane including a safety mechanism for securing the safety cage to the cargo container bridle. A plurality of locking pins are rotatably mounted within the roof assembly of the safety cage. Connector beams adapted for receiving the locking pins are mounted on the bridle in such a manner that when the bridle is lowered onto the top of the safety cage the locking pins are positioned within the connector beams. An activation assembly is provided by means of which the locking pins can be rotated to a locked position within the connector beams thereby securely joining together the safety cage and bridle.
Abstract: A staple is cut from a steel sheet with two parallel legs of rectangular cross section joined at one end by a broader web portion. The staple is driven partway into a roof understructure, leaving the web spaced therefrom to define an aperture for connection of a fall restraint lifeline to the staple which acts as an anchor for the lifeline.
Abstract: A stair track device adjustable to correspond with a variety of physically different stairways is shown. The stair track device includes right side rails which slidably engage one another in telescopic fashion to form a rail assembly. Locking pins fix the telescopic position of the rails with respect to one another. A corresponding mirror image left rail assembly is secured in position with respect to the right rail assembly by way of rods removably attached to each rail assembly. Lower and upper support members provide anti-skid support as well as establishing a proper angular relationship between the rail assemblies and the stairway. The rails can be detached from one another collapsed and compactly stored for easy transport to any location.
Abstract: A basic scaffolding tower assembly for building up, in modular fashion, a multi-level scaffolding system includes a pair of load-bearing tower panels spaced from and parallel to the building facade. The tower panels are joined together by a pair of landing channels extending perpendicularly to the building facade, thereby forming a generally rectangular tower structure. The landing channels support a work deck running parallel to the building facade, and the tower panels are spaced apart sufficiently to provide a drive-through passageway along the work deck wise enough for motorized construction equipment. Extension members carried by the landing channels extend inwardly towards the building facade and support, in cantilever fashon, a four foot or wider work deck immediately adjacent the facade. The tower assembly components are made of aluminum and are sufficiently robust to support twenty or more work levels.
Abstract: A child safety device used to restrain the freedom of movement and give protection against falling from a guardian attended, modern grocery cart. A safety device in light weight form that can be attached and released with the utmost ease and conveniently carried within the attendant's personal belongings. The belt component is wide enough to support the lower part of the abdomen. The front strap component of same width, braces the child's torso, conforms to and crisscrosses diagonally over the front mid section of the chest. Total tethering is accomplished by means of four clasp hooks. Two clasp hooks secure the shoulder straps to the top back seat of the modern grocery cart and two clasp hooks secure the belt components to the sides of the vertical frame or lower part of the fold down seat within the shopping cart and similar vehicles.
Abstract: A telescopic boom and lift apparatus positions a vertical support and platform and includes a telescopic boom unit and a rigid mechanical lift linkage to pivot the boom unit with automatic leveling of the support. The telescopic boom unit is pivoted to a base, with a motor unit coupled to extend and retract the boom unit. A rigid linkage unit is pivotally interconnected to the base and the tip boom of the boom unit. The linkage unit is constructed and arranged to support the boom unit in the retracted, collapsed position and to exert a lifting and pivot force on the boom unit in response to extension of the tip boom. Parallelogram linkages on the boom unit and lift unit are coupled to a pivot unit at the tip boom and maintains a precise orientation of the vertical support and platform. The lift arm unit includes parallel rigid arms which are laterally spaced such that the boom unit collapses into the lift unit to form a compact assembly.
Abstract: This invention is a tray that attaches to the side of hollow-rung ladders. The tray is sized large enough to accommodate an industry standard paint-roller-pan and hold it in a convenient position for the user either at the left side or at the right side of the ladder. The tray mounts to the ladder via a shaft that passes thru one hollow-rung. Secure attachment to various width ladders is accomplished via a safety-clip inserted into one of the series of thru-holes in the free end of the shaft that extends thru the hollow-rung. Adjustment of the tray to horizontal is accomplished via a movable L-shaped support that penetrates into a second hollow-rung. This invention contains fewer and simpler parts in comparison to prior inventions.
Abstract: A can supporting device supports a can from the rung of a ladder when the side rails of the ladder abut an upright supporting surface and has a support band of L configuration with first and second arms. The first arm has a hooked free end for hooking onto a rung of the ladder. The free end of the second arm has a retainer for a can resting on the second arm. A circular band is affixed to the first arm of the support band and encircles and thereby restricts movement of the can. An abutting bracket is affixed to the support band in movable relation to the support band into abutment with a rung of the ladder. This stabilizes the position of the supporting device and the can.
Abstract: A support platform for vehicles having a hanger frame that fits over and is supported by the upper portion of a vehicle wheel and a supported platform carried by the hanger frame and foldable with respect to the frame.
Abstract: A descent controller (30) for lowering a load along a rope (32). Controller is a friction cylinder or capstan (31) of a length adapted to receive a plurality of turns of rope (32) between top and bottom end plates (34, 35) adjacent the upper and lower ends of said cylinder which overhang the cylinder (31) and define radial slots (40, 41) sized to loosely receive the rope. An upwardly narrowing tapered slot (44) defined diametrically through the capstan (31) receives and releasably grips the rope. An annular clamp ring (48) is slidably mounted on the cylinder (31) and defines a radial aperture (49) which loosely receives the rope as it exits from the tapered slot (44). A spring (41) biases the ring (48) upwardly along the said friction cylinder (31) for releasably wedging the rope (32) in the tapered slot.
February 7, 1991
Date of Patent:
July 21, 1992
Frost Engineering Development Corp.
Horace M. Varner, Ernest L. Stech, Richard H. Frost
Abstract: The present invention pertains to a plastic ladder. The plastic ladder includes a front section which has a first hollow side rail and a second hollow side rail disposed essentially in parallel with the first side rail. The first and second side rails are made of plastic and have reinforced pockets disposed along the respective rails at predetermined locations. The plastic ladder also has a plurality of hollow plastic steps. Each of the steps is attached to the first and second rails at corresponding reinforced pockets therein such that each step forms a flat weight bearing platform upon which a user can stand. Each step has blow molded tread patterns which provide a slip resistant surface. The ladder also has a rear section comprised of a third hollow plastic side rail and a fourth hollow plastic side rail disposed essentially in parallel with the third hollow plastic side rail.
Abstract: An effective riser reducer step device is provided, which consists of a mechanism placed upon a tread of a step of a staircase for reducing the height of a riser of the step. Another mechanism is for moving the riser height reducing mechanism to the tread of each successive step of the staircase, so that a physically impaired person suffering from atrophy, back and leg problems can ascend and descend the steps of the staircase.
Abstract: A collapsible folding step-stool which is mountable to a cabinet door. The step stool comprises (1) a bracket mountable to the cabinet door; (2) a platform movable between a lowered, generally horizontal, operative position and a raised, generally vertical, inoperative position; (3) a plurality of parallel arms attached at their first ends to the platform and pivotally coupled at their second ends to the bracket; and (4) a plurality of parallel support legs movable between a generally vertical operative position perpendicular to the platform and a generally vertical inoperative position parallel with the platform and the bracket. The support legs have upper ends pivotally coupled to the platform and lower ends which, when the platform is in the operative position, are adapted to rest on the floor with the lower ends of the legs at a lower elevation than the bottom of the bracket.
March 5, 1991
Date of Patent:
July 21, 1992
Anthony D. Caminiti, Judith A. Caminiti
Abstract: A stackable sacffold module (11) having four vertically extending support columns or members (13,14) to which there is pivotally attached at least two work platforms (12), there is further provided clamps (44) which retain the work platforms (12) fixed to the support columns (13,14), when the module (11) is in an erect configuration. The clamps (44) are releasable to allow folding of the module (11) to a transport configurations, with the support members (13, 14) being located adjacent each other.