Platform Patents (Class 182/222)
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Patent number: 4763755Abstract: A release assembly for an aerial device for pivotally releasing a worker's bucket from an upright orientation to a horizontal orientation. The assembly consists of protrusions from the worker's bucket and a rotatable latch plate for selectively engaging and disengaging the protrusions.Type: GrantFiled: June 3, 1987Date of Patent: August 16, 1988Assignee: Pitman Manufacturing Co., Inc.Inventor: Robert J. Murray
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Patent number: 4756386Abstract: A support structure is disclosed for a scaffolding system. The support structure is collapsible and adjustable in height. The support structure includes a first rigid cross bar having a first and second pair of support legs disposed at both ends of the cross bar. The support legs of the pairs are hingedly connected to the first cross bar. First and second intermediate supports are connected to opposite ends of the first cross bar and extend downwardly therefrom between opposing support legs. Releasable brace means are provided for rigidly tying free ends of the intermediate supports to opposing legs of the support structure. A second rigid cross bar is provided as being sized to extend between the first and second intermediate support structures. A lock pin releasably secures first and second ends of the second cross bar to the first and second intermediate supports at spaced intervals along the lengths of the intermediate supports.Type: GrantFiled: March 4, 1987Date of Patent: July 12, 1988Inventor: Virgil Blanchard
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Patent number: 4749060Abstract: Modular stage platform comprises a pair of parallel, spaced-apart base members each comprising an elongated extrusion having an upstanding wall defining a continuous toe plate and an inwardly facing channel at the bottom thereof, the channels of the pair of spaced apart base members being opposed to each other, a plurality of equispaced transverse tubular members having opposite ends inserted into said opposed channels and secured thereto along said base members, a pair of parallel, spaced-apart midrails, each comprising an elongated U-shaped extrusion having a pair of walls depending downwardly from a web, said walls having opposed ridges formed on their inner sides spaced from the distal ends thereof and spaced from the web to form a continuous, downwardly-facing recess along the length of each rail and an inner box-like cavity, a plurality of equispaced vertical tubular members having their upper ends inserted into said recess and their lower ends abutting the base member channel rigidly secured thereto inType: GrantFiled: September 3, 1987Date of Patent: June 7, 1988Assignee: Swing Stage LimitedInventor: Henry Vandelinde
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Patent number: 4742890Abstract: A work platform comprising a moulded polymeric resin fibre-reinforced generally channel-section shell having a lip flange extending inwardly from each channel side, and comprising tensile elongation resisting reinforcement comprising fibres extending longitudinally at least along marginal zones of the channel base and of the lip flanges adjacent the channel sides, and said channel sides comprising fibrous reinforcement resisting tensile elongation of said sides in the direction perpendicular to said marginal zones, whereby said platform is rendered substantially rigid to bending about axes transverse of said channel structure.Type: GrantFiled: October 22, 1987Date of Patent: May 10, 1988Assignee: Protective Plastics LimitedInventor: Jakob de Blauw
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Patent number: 4703833Abstract: A holder or attachment in box like form for use with a stepladder is provided. The box like attachment is provided with a connecting member secured to the bottom of the box with the connecting member being in the form of a tongue. The tongue of the box like member is adapted to reside or fit within the slots formed between support members on a foldable shelf which forms a part of a conventional stepladder and the box is adapted to hold wall papering equipment, cans of paint and tools such as hammers, saws, pliers and screw drivers.Type: GrantFiled: September 18, 1986Date of Patent: November 3, 1987Inventor: Phil J. Bachman
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Patent number: 4648484Abstract: A support assembly for e.g. a scaffold support platform, comprises two horizontally spaced elongate elements 10 mounted between two longitudinally spaced supports 12 and 14 by means of respective hook connectors 16 and 18. The elements 10, connectors 16-18 and supports 12-14 are so dimensioned and arranged with respect to one another that upwardly directed disconnection of the connectors from their supports is prevented unless the element 10 is first deliberately displaced in a direction parallel to its longitudinal axis. Upon such displacement, the element 10 may be tilted upon one support to permit upwardly directed disconnection from the other support.Type: GrantFiled: June 12, 1986Date of Patent: March 10, 1987Assignee: GKN Kwikform LimitedInventor: Dennis W. Lovering
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Patent number: 4638604Abstract: A stage system and apparatus for construction of flat stages, choral risers, and the like which utilizes a basic structural flat rectangular panel module with an edge of extruded material having a re-entrant groove on the outer surface and upper and lower sockets on each side of each corner of the panel to receive support legs fashioned to be received in the bottom sockets. Railing stanchions are provided to seat in the top sockets. In the vertically spaced and overlapping choral risers, the top sockets serve to locate the overlap and mechanically lock the panels in an overlap position. Inserts received in the re-entrant groove interengage with the re-entrant groove of an adjacent panel to provide lateral and vertical stability to adjacent panels.Special leg brackets are provided to engage the bottom sockets of two to four adjacent module panels to provide vertical support and lateral retention. Leg assemblies can be formed as a folding frame to facilitate shipping and storage.Type: GrantFiled: May 7, 1984Date of Patent: January 27, 1987Assignee: Stage Rite CorporationInventors: O. David Rogers, John Bardwick, III, Kenneth Staten
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Patent number: 4631874Abstract: A bleacher structure for spectators comprising a system of interconnected upright posts crossbeams, and diagonal stiffening members with channel beam seats and footrests locked into the structure by means of tab members in the crossbeams and clips bolted to the crossbeams.Type: GrantFiled: April 24, 1985Date of Patent: December 30, 1986Inventor: Jewell C. Griffin, Jr.
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Patent number: 4583617Abstract: A rescue basket is provided with a centrally placed guide tube extending upwardly from the bottom of the basket, thereby forming a guide for a handling wire which extends through the tube and under the basket is connected to a weight.Type: GrantFiled: November 26, 1984Date of Patent: April 22, 1986Inventor: Per Berger
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Patent number: 4561165Abstract: A method and apparatus for making hook-to-rail connections for scaffolds or the like, namely a method of securing an offset hook to a rail or beam of generally I-shape by inserting an arcuate plate of such ductility as to be deformable upon extension thereof to fill spacing between the flanged ends of the rail or beam and the hook and to secure the hook to the rail.Type: GrantFiled: June 4, 1984Date of Patent: December 31, 1985Assignee: R. D. Werner Co., Inc.Inventor: Thomas E. Bayer
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Patent number: 4534447Abstract: A foldable scaffold is disclosed, including a frame and a person-supporting plank. The frame comprises two upwardly-extending end ladders. A backwardly-located truss pivotally joins the ladders together and includes a hinge at the intermediate portion thereof for pivotal forward movement of the latter from a fully-extended truss position to a folded truss position. The latter movement produces relative lateral movement of the ladders from spaced-apart positions, one toward the other, to near-abutting positions. The frame also includes a hinge to releasably immobilize the hinge and maintain the truss in fully-extended position. The person-supporting plank is removably fixed to and extends between the ladders when the truss in its fully-extended position.Type: GrantFiled: April 3, 1984Date of Patent: August 13, 1985Inventor: Lucien Champigny
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Patent number: 4534448Abstract: Improved scaffold clamps are described. These clamps provide a complete enclosure means for securing a plurality of planks in side-by-side relationship. The enclosure means bears a rigid working plate with a press screw extending longitudinally therethrough for exerting pressure against the edges of the enclosed planks. These clamps provide an improved means for stabilizing scaffold platforms.Type: GrantFiled: February 2, 1983Date of Patent: August 13, 1985Inventor: Peter C. Trainer
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Patent number: 4499967Abstract: An interconnected scaffolding platform having at least two elongated staging sections which are butted together so as to lie colinearly and in a common plane. A pair of lateral plates longitudinally project from the confronting ends of each of the sections. The plates are staggered with respect to each other to permit interfitting of the plates. A transverse bore is formed through all of the plates to define a passageway. A U-shaped bar arrangement interfits through the passageway and has depending arms which can secure the interconnected staging sections to a support member.Type: GrantFiled: November 9, 1983Date of Patent: February 19, 1985Inventor: Carl E. Anderson
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Patent number: 4496029Abstract: A scaffold plank comprising a layer or layers of covering member wrapping a plurality of hollow, lightweight elongated members rectangular in cross section and arranged in side-by-side contact to provide at each end a plurality of transversely aligned opening mouths into which a corresponding number of inwardly projecting plug portions of a transverse end member are matingly fit, whereby plank ends are protected from deformation, damage, and incoming of mud or water. The plurality of elongated members may be replaced by a single piece of partitioned tubular member which is a rectangular in cross section and has two or more opening mouths formed respectively at opposite end thereof.Type: GrantFiled: March 30, 1983Date of Patent: January 29, 1985Inventor: Shigeharu Kuroda
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Patent number: 4475625Abstract: A platform for attachment to an aerial boom, said platform being constructed of lightweight dielectric material and mounting collapsible guard rails. The platform includes braces which stabilize and position it on the aerial boom.Type: GrantFiled: March 1, 1982Date of Patent: October 9, 1984Inventor: Shannon K. Clements
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Patent number: 4445591Abstract: A hunter's tree stand (10) comprising a planar seat member (16) of generally rectilinear form having a pair of opposed generally V-shaped notches (18, 19) formed in its opposite ends which are adapted to engage and partially surround, in intimate face-to-face relation, the facing portions of a pair of diverging tree branches (14, 15) at the fork (11) formed thereby, a sharp, laterally projecting V-shaped metal knife-like edge (20) secured to the undersurface of the seat member (16) in juxtaposition to and projecting laterally from the first V-shaped notch (18), and an L-shaped bracket (22) releasably secured to the undersurface of the seat member (16) by means of one or more bolt and nut combinations (29, 31) for permitting lateral extension of said L-shaped bracket (22) relative to the second of the V-shaped notches (19) to permit the depending bracket leg (25) to be placed in face-to-face contact with the other of the diverging branches (14) and positively secured thereto by one or more threaded fasteners (Type: GrantFiled: January 13, 1983Date of Patent: May 1, 1984Inventor: Paul M. Mitchell
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Patent number: 4445590Abstract: A scaffold plank correction arrangement comprises a pair of identical connectors, each having a horizontal flat portion attached to a plank and a folded-down tongue portion integrally formed therewith. A transverse slit is provided in the flat portion of each connector, which slit extends parallelly to the common boundary between the flat portion and the tongue. When the connectors are placed in an overlapping relationship, the tongue of one connector protrudes through the slit in the other connector whereby a direct connection is formed between the ends of two adjacent planks (FIG. 2).Type: GrantFiled: March 26, 1982Date of Patent: May 1, 1984Assignee: Floby DurkInventor: Carl-Bertil Ihrman
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Patent number: 4441583Abstract: A cable hanger bracket is provided for hanging a swinging scaffold from a walkway grating comprising vertical parallel side walls, a connected bottom wall and U-type oppositely extending bends for overlapping the grating of a steel grating walkway. A softener member device is secured between the parallel side walls and the connecting bottom wall and is designed to prevent cutting or chafing of a loop of cable about the softener member and between the parallel side walls. The cable hanger has U-bends and downwardly extending walls which overlap the grating and bind thereto in the event of overloading of a platform supported by cables and the hanger bracket.Type: GrantFiled: March 28, 1983Date of Patent: April 10, 1984Inventor: Ronald R. Vaught
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Patent number: 4391348Abstract: A scaffold is disclosed having a platform and at least a pair of generally horizontally extending, spaced support members beneath the platform. A pair of longitudinally spaced openings are formed in the platform through one surface to extend generally perpendicular thereto. A hollow cylinder is mounted in each opening having a pin mounted therein for movements between a retracted position and an extended, operative position. The platform can be disposed on the support members with the pins in the operative positions to prevent the platform from sliding off the support members, and the platform can be turned over to move the pins to the retracted positions for transport and storage purposes.Type: GrantFiled: September 16, 1981Date of Patent: July 5, 1983Inventor: Ronald L. Rieland
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Patent number: 4372424Abstract: In a scaffolding assembled of vertical posts, trough-shaped crossbars secured to the posts and gangplanks hooked on the edges of crossbars by claws, a safety device for securing the gangplanks against accidental lifting includes oblong holes formed in the bottom of the trough-shaped crossbars, a rail arranged above each crossbar and overlapping the claws, each rail being provided with a downwardly directed projection formed at its end with a bent portion insertable into the holes and engageable with the crossbar, and a locking plate hinged to the end of the rail which is situated away from the direction of bending of the hook-shaped portions.Type: GrantFiled: May 22, 1981Date of Patent: February 8, 1983Inventor: Ruth Langer
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Patent number: 4372425Abstract: An auxiliary attachment for portable framework type of scaffolding assembly adapted for erection alongside a vertical face of a structure. The usual framework includes outwardly extended brackets to mount and support a horizontal worker platform formed of planking pieces. The auxiliary attachment of this invention is detachably and adjustably connectable to the front of the scaffold framework. A portion of the auxiliary attachment extends outwardly beyond the scaffold and provides support means for unsupported cantilever plank ends terminating adjacent a projection or abutment extending outwardly beyond the vertical structure face.Type: GrantFiled: January 12, 1981Date of Patent: February 8, 1983Inventor: Michael Murphy
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Patent number: 4352597Abstract: A slidably assembled dock is described having spaced facing side channels slidably receiving platform modules, the edges of said modules being within said channels, and the channels being tied together by elongated eye bolt elements which extend through the positioned platform modules. The platform modules have an upper layer notched at the edge to fit smoothly with the channel upper flanges, a lower layer resting on the channels, and connector stringers therebetween.Type: GrantFiled: January 12, 1981Date of Patent: October 5, 1982Inventor: Charles Kay
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Patent number: 4349297Abstract: The boat dock consists of a series of laterally spaced, tubular stanchions of adjustable height having tee fittings at their upper ends threaded into the ends of adjacent tubular stringers. Plastic resin planks are slideably engaged over the tubular stringers.Type: GrantFiled: November 19, 1980Date of Patent: September 14, 1982Inventor: Terrance J. Misener
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Patent number: 4340130Abstract: The scaffold system of this invention includes structures for retaining hollow folded metal planks on scaffold end frames or scaffold side brackets. A plank retaining lug is used to engage the underside of a plank and cooperates with a hold-down shoulder to retain the plank in place. A frame header may use the structures described to retain planks on both sides of an end frame. The frame header may be releasably mounted to a conventional scaffold end frame. Side brackets may be equipped with the structures to retain planks cantilevered from the scaffolding system.Type: GrantFiled: July 24, 1980Date of Patent: July 20, 1982Assignee: Kwikform America, Inc.Inventors: George E. Payne, Richard G. Meehan
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Patent number: 4331218Abstract: A scaffold plank has a horizontal metal walkway provided with a plurality of perforations with selectively upwardly and downwardly extending collars, two side flange members each extending along one side edge of the walkway and formed by a side portion of the latter, and two end profiled members each extending beneath the walkway along one end edge of the latter and connected with the walkway and the side flange members. Each end profiled member is provided with an element for suspending the plank.Type: GrantFiled: March 19, 1980Date of Patent: May 25, 1982Inventor: Eberhard Layher
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Patent number: 4323140Abstract: A novel safety platform for use in a vertical shaft such as a manhole. The platform comprises a pair of support beams with the ends of each support beam mounted in the wall of the shaft. At least one panel extends across the shaft and bridges the support beams with a novel wedge clip at one end of the panel to allow the panel to be opened or secured in the closed position. A novel pivotting means is provided at the other end of the panel which pivotally secures the panel to the opposite support beam. The platform may be installed easily with fewer problems than the prior art yet provides increased safety factors for the user.Type: GrantFiled: July 18, 1980Date of Patent: April 6, 1982Inventors: Anthony Foscarini, John Foscarini, Corrado Comello
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Patent number: 4276956Abstract: A process of erecting interior combustion and checker chambers in a hot blast stove by lining the checker chamber and building the chamber wall from a vertically movable scaffold in the checker chamber shaped to conform with the interior thereof, laying up checkerwork in the checker chamber beneath the movable scaffold, these two operations being supplied from outside the stove through feed openings at progressive heights, and lining the combustion chamber from a vertically movable work scaffold within the combustion chamber. All three principle operations are carried on concurrently.Type: GrantFiled: January 16, 1980Date of Patent: July 7, 1981Assignee: Andco IncorporatedInventors: Ronald S. Mamula, Samuel C. Dotson
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Patent number: 4254846Abstract: An apparatus and method for the removal of insulating liners and the like from their outer containers is disclosed. The apparatus comprises a strap attached to a hook means. The hook means is adapted to engage the upper edge portion of the container and the strap is of sufficient length to extend from the hook means down the corresponding inner side wall portion of the container across the bottom and up and beyond the opposite side wall portion of the container while the liner is fully inserted within the container. The method includes pulling the end of the strap which extends beyond the side wall portion opposite the hook means, thereby forcing the liner from the container.Type: GrantFiled: May 24, 1979Date of Patent: March 10, 1981Inventor: Davide A. Soave
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Patent number: 4187929Abstract: A scaffold stabilizer for use on a scaffold platform, consisting of a multiplicity of longitudinal planks of uniform thickness assembled in side-by-side contact to form a supporting floor or platform for workers. The stabilizer comprises a generally C-shaped unitary metallic clamping member comprising upper and lower plate members rigidly connected to an end plate member, the upper and lower plate members being sufficiently long and defining therebetween an opening sufficiently wide and long to receive a multiplicity of flooring planks in close side-by-side engagement. At least one of the plate members is bowed towards the other so as to provide a tight frictional engagement with one surface of the planks present therein. The upper and lower plate members are provided with means for securing and tightening the ends thereof together at a location adjacent the outermost plank contained within the clamping member.Type: GrantFiled: August 3, 1978Date of Patent: February 12, 1980Inventor: Leonide A. Cyr
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Patent number: 4164268Abstract: One or more elongated roller assemblies may be selectively mounted at a variety of positions along the inner edge of a scaffold platform. The inner and outer edges of the platform each include a series of correspondingly spaced apertures therethrough which receive the support rods or shafts of the roller assemblies. When the roller assemblies are emplaced the rollers lie between the inner edge of the platform and the vertical wall of the building along which the scaffolding is moving, and the mounting or support rods extend entirely through the platform and act as reinforcement of the assembly.Type: GrantFiled: March 20, 1978Date of Patent: August 14, 1979Assignee: Clear Day, Inc.Inventors: Paul Jones, John H. Scheffer
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Patent number: 4161232Abstract: A safety deck for vehicles, e.g. for use behind a tractor cab or the like, and securing structure therefor is disclosed to utilize J-bolts having resilient members secured to their bases wherein the J-bolts effect securing means of deck structure to the chassis of a vehicle.Type: GrantFiled: February 15, 1978Date of Patent: July 17, 1979Inventor: Leopold Bustin
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Patent number: 4139080Abstract: A tree platform supported between two tree branches made up of a platform-like member having ends suitable to slide down between two diverging tree branches, two legs are hinged to the underside of the platform member and a turnbuckle engages the lower ends of the legs forcing them out into engagement with the tree branches thereby holding the platform in place. The turnbuckle ends are generally elliptical in shape and have outer peripheral grooves which receive the loops of two ropes that dangle from the turnbuckle and ladder steps are supported on the two ropes providing a ladder for a person to climb into place on the platform. The ladder will also provide a rope for a hunter to drag a deer.Type: GrantFiled: March 6, 1978Date of Patent: February 13, 1979Inventor: Milton C. Wells
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Patent number: 4121377Abstract: Greenhouse plants are displayed on horizontal shelves supported between side rails extending at an angle between vertical support posts, the posts being interconnected in pairs between confronting vertical grooves formed in the posts. Each shelf is assembled from elongated sections held in parallel spaced relation to each other by spacers at the longitudinal ends of the shelf which are received within grooves formed in the side rails.Type: GrantFiled: March 14, 1977Date of Patent: October 24, 1978Inventors: Peter A. Allen, Robert S. Richfield
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Patent number: 4050257Abstract: An economical, lightweight, easily assembled and disassembled dock assembly.Type: GrantFiled: December 3, 1975Date of Patent: September 27, 1977Inventors: Blanchard St. Clair Parks, Bernette Frederick Parks
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Patent number: 4047594Abstract: A scaffold and platform adaptable for assembly and disassembly consisting of similar rectangular platform blocks functioning together as lateral beams, each provided with upper and lower frames which are each adjustable manually as to height and which are supported always by means of two scissor members on the two opposite longitudinal sides, whereby the legs of the scissors are articulated with one end at a corner point of the lower frame, and can be arrested at their other upper end at the lateral beams of the upper frames in different positions, being characterized by intermediate slabs which are attachable at their upper frames and are insertable between the longitudinal sides of the platform blocks and wherein said intermediate slabs are joined to the middle longitudinal area of the upper frame-lateral beams of the platform block by attaching elements, which engage with the adjusting path of the upper ends of the legs of the scissors and limit the adjustment of height of the platform blocks to a permissiType: GrantFiled: May 17, 1976Date of Patent: September 13, 1977Inventor: Hans Jochen Eisenberg
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Patent number: 3994036Abstract: A platform mountable to extend between a pair of vertically movable stagings to provide a vertically movable elongated staging. The staging platform is composed of a plurality of like configured bridge sections vertically pivotably connected end to end and maintained in horizontal alignment between the spaced stagings and stretched taut beneath the bridge sections to prevent the staging platform from sagging while allowing the platform to bend upwardly. The pivotal connecting means between the bridge sections being spaced laterally at deck level of the platform and thus having substantial capability for flexing in response to longitudinal twisting forces exerted thereon.Type: GrantFiled: March 26, 1976Date of Patent: November 30, 1976Inventor: Sidney L. Fisher
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Patent number: 3957240Abstract: A scaffolding bracket for attachment to a ship's bulkhead, or other vertical wall structure, having flanged, horizontally extending strengthening bars is provided with a beam and a hook member for engagement with a strengthening bar, at an arbitrarily selected point. One end of the beam, in mounted position, reaches in below the bar and is provided with an upwardly directed stanchion, upon which a two armed lever is pivotably mounted. A longer part of this lever is directed towards the hook member, leaving a clearance between its end and the hook member suitable for the reception of the flange of the strengthening bar.Type: GrantFiled: April 10, 1975Date of Patent: May 18, 1976Assignee: AB GotaverkenInventor: Kurt Johansson