Readily Detachable Platform Patents (Class 182/119)
  • Patent number: 10633872
    Abstract: A framework platform element, in particular for scaffolding, includes a framework platform body made from sheet metal material and extending in a longitudinal direction, with a stepping surface region providing a stepping surface on a top side and with side panel regions connecting to the stepping surface region in transition regions, formed by shaping the sheet metal material in two edge regions of the stepping surface region and situated at a distance from one another in a transverse direction. At least one side panel region has an end profile region, formed by shaping the sheet metal material, in an end region spaced apart from the transition region in a vertical direction, wherein in at least one transition region and/or in at least one end profile region, at least one curved shaped region is provided. A radius of curvature is less than or equal to a material thickness of the sheet metal material in at least sections in at least one curved shaped region.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: April 28, 2020
    Assignee: Wilhelm Layher Verwaltungs GmbH
    Inventor: Helmut Kreller
  • Patent number: 10435894
    Abstract: A scaffold upon which a person stands includes a platform with a first leg assembly rotatably attached to the platform. The scaffold includes a latch assembly having a latch pivot axis coupled to the platform. The scaffold includes a stud attached to a first leg of the first leg assembly to which the latch assembly engages when the first leg assembly is moved into the extended position to automatically lock the first leg assembly in the extended position where the latch assembly is in a set position. When the latch assembly is moved out of the set position, the stud on the first leg disengages from the latch assembly and the first leg assembly is able to rotate about the first leg assembly pivot axis to a folded position. A method for using a scaffold.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: October 8, 2019
    Assignee: Werner Co.
    Inventors: Steve Woodward, Joe Dangrow, Thomas W. Parker, Michael A. Somerfield
  • Patent number: 10047531
    Abstract: A cup lock connection system for scaffold equipment advantageously has a locating arrangement for aligning ledgers, braces and other components on the cup lock at predetermined angular positions relative to the scaffold upright. The connecting ledgers, braces and other components preferably have a connecting head receivable on the cup lock connection in one of two orientations. In one orientation the aligning feature is active. In the second orientation the connection can be made without using the alignment functionality.
    Type: Grant
    Filed: June 13, 2016
    Date of Patent: August 14, 2018
    Inventor: Peter J. Rogers
  • Patent number: 10023446
    Abstract: Embodiments of transformable tables are disclosed. A transformable table has a lifting mechanism and a platform secured to the lifting mechanism. The platform has a stationary panel; a plurality of expansion panels positioned on either side of the stationary panel; and a plurality of extension panels in slidable engagement with the expansion panels and the stationary panel. The stationary panel, the expansion panels, and the extension panels are formed from a plurality of hollow tubes, and the hollow tubes re spaced apart a predetermined distance to form forming spaces therebetween and are secured together with a reinforcement member. The expansion panels extend laterally outward from the stationary panel, and the extension panels extend longitudinally outward from the connection with the expansion panels and the stationary panel.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: July 17, 2018
    Assignee: Shinn Fu Corporation
    Inventors: Derek Ryan Cudney, Ryan A. Jorgensen
  • Patent number: 9551160
    Abstract: A scaffold includes a first end frame assembly. The scaffold includes a second end frame assembly. The scaffold includes a first side brace assembly supported by the first end frame assembly and the second end frame assembly. The scaffold includes a second side brace assembly supported by the first end frame assembly and the second end frame assembly. Each end frame assembly has a first rail with holes and a caster assembly and a second rail with holes and a caster assembly, and a horizontal that is attached to each rail. Each side brace assembly has a locking pin in proximity to each end which engages with a hole in a respective rail, and an associated guard disposed about each pin. Each locking pin has a handle which has a length that extends below the associated guard on an interior side of the guard. A method for a scaffold.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: January 24, 2017
    Assignee: Werner Co.
    Inventor: Preston L. Gealy
  • Patent number: 8727074
    Abstract: A platform assembly includes a ladder that comprises a plurality of steps coupled to and extending between a pair of legs. A platform is provided that may be coupled to a selected one of the steps.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: May 20, 2014
    Inventor: Heeralall Bhajan
  • Patent number: 8544605
    Abstract: A scaffolding (20) comprises vertical frame elements (22), crossbeams that extend therebetween, flooring units (27) which have mounting aids (28) to be mounted on the crossbeam (21), and at least one anti-release device (40) for securing the flooring units (27) against being released. The anti-release device (40) can be removably connected to the crossbeam (21) and has a securing member (41) which corresponds to the length of the crossbeam, is to be placed on the mounting aid (28), and is fitted with at least one hook-shaped fastening element (42) that penetrates a hole (33) located in the crossbeam and partially embraces the crossbeam (21) in the anti-release state. One end of the securing member (41) is provided with a pivotable plate which is fastened by means of a hinge and is pivoted from the open position into the locking position and retained by means of a spring mechanism (60).
    Type: Grant
    Filed: March 10, 2009
    Date of Patent: October 1, 2013
    Assignee: Wilhelm Layher Verwaltungs-GmbH
    Inventor: Helmut Kreller
  • Patent number: 8490747
    Abstract: A scaffold includes a frame assembly. The scaffold includes planks that are disposed on the frame assembly. The scaffold includes wheels attached to the frame assembly on which the frame assembly rolls. The scaffold includes a project tray which extends from the frame assembly. The scaffold includes a telescoping tube assembly that is mounted to the frame assembly and on which the tray is mounted. A method for using a scaffold. The method includes the steps of placing a telescoping tray assembly at a desired height relative to a frame assembly having planks disposed on it by moving the tray assembly which extends from the frame assembly. There is the step of locking the tray assembly at the desired height to the frame assembly.
    Type: Grant
    Filed: June 30, 2006
    Date of Patent: July 23, 2013
    Assignee: Werner Co.
    Inventors: David A. Winslow, Yick B. Shum, John J. Dylik, Marcus Burzynski
  • Patent number: 8453796
    Abstract: A ladder system includes a ladder having a ladder top, the ladder top having at least a first slot. A container having at least a first protrusion that engages with the first slot to hold the container to the top. A method for working from a ladder. The method includes the steps of filling a container with objects and engaging a first protrusion of the container with a first slot of a top of the ladder to hold a container to the top.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: June 4, 2013
    Assignee: Werner Co.
    Inventors: Kyle G. Astor, Robert J. Glenn, II
  • Patent number: 8448748
    Abstract: A dual-use ladder and bridge modular system preferably includes tubes, gussets, flanges, and/or joints. In a preferred embodiment, the tubes, gussets, flanges, and/or joints are made of carbon fiber. A method connects and disconnects modular carbon fiber ladder segments. Another method creates a lightweight carbon-fiber beam with exceptionally high stiffness and strength using a combination of carbon-fiber braid material, uni-directional cloth, and pultruded carbon-fiber strips. A carbon fiber ladder segment and tube connectors are also disclosed.
    Type: Grant
    Filed: December 23, 2009
    Date of Patent: May 28, 2013
    Assignee: Allred & Associates, Inc.
    Inventors: Jimmie B. Allred, III, Joseph Kummer, Michael D. Griswold, Michael J. Hall, Matthew A. Bush
  • Patent number: 8381873
    Abstract: A convertible ladder and scaffold assembly includes a plurality of uprights and a plurality of beams each extending from one of the uprights. A plurality of hinges each hingedly connect one of the uprights to one of the beams about a rotational axis (AR) to provide an assembly having ladder, scaffold, push-cart, and storage configurations. Each of the hinges defines catches and present a stop releasably engaging catches for preventing rotation about the rotational axis (AR). At least one lever bar releasably engages a plurality of the stops for simultaneously releasing a plurality of the stops from engaging catches. Each of the lever bars have a plurality of lever sections for providing leverage to disengage the stops from the catches. Each of the lever bars has a grip section interconnecting the lever sections for simultaneously releasing a plurality of the stops from engaging the catches.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: February 26, 2013
    Assignee: Affinity Tool Works
    Inventors: Mark Cross, Eric Primeau
  • Patent number: 8210312
    Abstract: The mobile work platform is a collapsible frame assembly that can support tools, supplies, and workers. The collapsible frame involves two distinct embodiments wherein a first embodiment involves a frame assembly that simply folds flat when not in use, and a second embodiment involves a rotating ladder assembly in conjunction with a frame assembly that can fold flat when not in use. Both embodiments include ladder rungs upon each side to enable climbing upon said device as well as removable scaffolds.
    Type: Grant
    Filed: June 25, 2009
    Date of Patent: July 3, 2012
    Inventor: Adrien R. Tetreault, Jr.
  • Patent number: 7886873
    Abstract: A panel-type construction element comprises a substantially rectangular base panel (1), which is particularly suited, for example, for use as a covering for facade scaffolding. Numerous dimples (2) can preferably be configured on the upper face of the base panel parallel to the longer side of the panel and continuous transversal areas (3) that are devoid of dimples and that respectively run at intervals in the longitudinal direction of the base panel are configured over the entire width of the latter. In the areas (3), transversal ribs (7), which project downwards and are connected to the underside and the respective abutting areas of flange surfaces (4) provided on the underside of the base panel to project downwards from the two longer sides of the base panel. The combination of longitudinal and transversal elements permits a simple, rigid and light-weight construction element, which if configured in plastic exhibits excellent weather and corrosion-proof properties and is extremely stable.
    Type: Grant
    Filed: February 6, 2003
    Date of Patent: February 15, 2011
    Assignee: SwissFiber AG
    Inventors: Josef Peter Kurath-Groll Mann, Walter Roland Weiler-Bisig
  • Patent number: 7861826
    Abstract: The present disclosure relates to platforms for ladders. More particularly, the present disclosure relates to a platform configured to be coupled to rungs of the ladder.
    Type: Grant
    Filed: August 30, 2007
    Date of Patent: January 4, 2011
    Assignee: Cosco Management, Inc.
    Inventors: Thomas J. Meyers, Paul F. Meyers
  • Publication number: 20100282540
    Abstract: Various embodiments of ladders, ladder components, accessories for ladders, ladder systems and related methods are provided. In one embodiment a ladder and platform system is provided having at least two ladders and a platform or plank. The platform or plank has coupling mechanisms that provide adjustable but secure coupling of the platform to the ladders, either with the top cap or with the rungs. Other embodiments include storage devices and paint trays for use with ladders and ladder systems incorporating such devices.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 11, 2010
    Applicant: WING ENTERPRISES, INCORPORATED
    Inventors: N. Ryan Moss, Ryan Crawford, Ben K. Jackson, Stephen E. Boynton, Heidi Phillips, Keith Emmel
  • Patent number: 7694374
    Abstract: Disclosed is a modular bridge, typically for temporary use to enable persons to pass between upper floors of adjacent buildings during fire fighting or disaster relief operations, which can be rapidly assembled and deployed within a confined space and entirely from the “home” side of the gap to be crossed. It comprises a plurality of man-portable box section bridge modules adapted to be connected together end to end and projected in cantilever fashion from one side of the gap to the other. The assembly of modules is supported in and guided through a launch frame, with modules being added to the rear of the assembly and pushed through the frame until the gap is spanned. Removable lever arms of the frame are used to counterbalance the weight of the projected bridge modules during the course of deployment.
    Type: Grant
    Filed: February 2, 2007
    Date of Patent: April 13, 2010
    Assignee: Qinetiq Limited
    Inventors: Douglas Hugh Jones, Ian John Dunn, Colin Peter Morgan, Scott Ardley, Linda Mary Patricia Starink
  • Publication number: 20100071994
    Abstract: The present invention is to provide a new multi-functional collapsible platform ladder of H shape, comprises a shelf rack, a pair telescopic ladders and a fixing framework, wherein the shelf rack are abutted and linked by a pair platform decks, and has hanger disposed at each distal outer ends thereof; the pair telescopic ladders are juxtaposed at each end of the shelf rack respectively with hanger of the shelf rack hooking on desired rung thereof; and the fixing framework comprises a pair foldable scaffolds, a pair joists and two pair tubular holders, which has a caster disposed thereof. By all foregoing parts, it can be transformed into H-shaped, ?-shaped or single telescopic ladder with multiple functions and features in height adjustment and collapsibility to achieve effects of easy transportation and saving storing space.
    Type: Application
    Filed: September 25, 2008
    Publication date: March 25, 2010
    Inventor: Chiu-Chu Tseng
  • Publication number: 20090178885
    Abstract: A ladder and walkboard support is installed within an open side of a construction scaffold, providing additional support rungs within the open side. The support has upper hooks that hang from an upper scaffold rung and lower saddles that engage the vertical surfaces of a lower scaffold rung, preventing the lower end of the support from swinging when installed. Walkboards may span a pair of supports installed in opposing open sides.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 16, 2009
    Inventor: William J. Heath
  • Patent number: 7389856
    Abstract: An elevated work platform to support workers thereon comprising a plurality of support sections held in operative relationship relative to each other by a peripheral frame wherein each support section comprises a plurality of transverse support members held in spaced relationship relative to each other by a plurality of longitudinal members and the peripheral frame comprises a pair of side frame members each including a channel to receive opposite end portions of the transverse support members of each support section to hold the support sections in operative position relative to the other support sections.
    Type: Grant
    Filed: July 26, 2004
    Date of Patent: June 24, 2008
    Inventor: Grady J. Irvin
  • Patent number: 7188707
    Abstract: A scaffold plank assembly for engagement to a scaffolding frame. The scaffold plank assembly comprises an elongate, non-metal plank defining opposed first and second ends and at least one interior cavity. Attached to respective ones of the opposed ends of the plank is a pair of end connectors. Each of the end connectors comprises a main body defining an arcuate body engagement surface, and at least two arms which are attached to the main body. Each of the arms also defines an arcuate arm engagement surface which is substantially continuous with the body engagement surface. Attached to and extending from the main body is at least one attachment finger which is extensible into the interior cavity of the plank. The body and arm engagement surfaces are sized and configured to be cooperatively engageable to the scaffolding frame.
    Type: Grant
    Filed: October 7, 2005
    Date of Patent: March 13, 2007
    Assignee: Bothwell Enterprises, Inc.
    Inventors: Timothy B. Bothwell, Roy Watson
  • Patent number: 7086500
    Abstract: An extensible, self locking platform includes a first assembly having a first plurality of substantially parallel longitudinally extending members and a second assembly having a second plurality of substantially parallel longitudinally extending members. The first and second assemblies are longitudinally, slidably coupled with each other. The platform may also include one or more catch devices. In one embodiment, at least one catch member is pivotably coupled to the first assembly with an associated stop member. The stop member is configured to maintain a rotation of the at least one catch member at less than a full revolution such that when the catch member is being abutted against an elevated support structure and the platform is being laterally displaced relative thereto, the catch member will also abut the stop member and prevent further displacement of the platform relative to the elevated support structure.
    Type: Grant
    Filed: October 31, 2003
    Date of Patent: August 8, 2006
    Assignee: Wing Enterprises, Inc.
    Inventors: N. Ryan Moss, Darius S. Penrod
  • Patent number: 7032712
    Abstract: The invention relates to a scaffold with vertical supports arranged spaced apart next to one another and/or behind one another, with horizontal carriers arranged between adjacent vertical supports and with scaffold decks which releasably lie at their end regions on oppositely disposed horizontal carriers another and preferably extending parallel to one another, preferably by means of hooks,.
    Type: Grant
    Filed: February 22, 2002
    Date of Patent: April 25, 2006
    Assignee: Peri GmbH
    Inventor: Artur Schwörer
  • Patent number: 6971477
    Abstract: A scaffolding (10) for elevating a worker (not shown) above a floor or ground surface is disclosed. The scaffolding (10) broadly includes a pair of frames (12) and (14), cross bracing (16) coupling the frames (12,14) together, and a plurality of walkboards (18, 20, and 22) removably supported between the frames (12,14). Each of the frames (12,14) includes a plurality of slotted ledgers (32, 34, 36, 38) and (40, 42, 44, 46) coupled to and extending horizontally between corresponding support posts (24,26) and (28,30), respectively. Each ledger is configured to facilitate initial assembly of the frames (12,14) and to prevent undesired shifting of a walkboard supported thereon. For example, the ledger (38) is defined by a U-shaped wall (60) that presents an arcuate walkboard bearing support surface (62) having open, recessed slots (64,66,68,70,72) defined therein. Each slot is configured and dimensioned to receive a portion of the supported walkboard and prevent shifting of the walkboard along the ledger axis.
    Type: Grant
    Filed: September 24, 2004
    Date of Patent: December 6, 2005
    Inventor: Steven J. Wyse
  • Patent number: 6761247
    Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).
    Type: Grant
    Filed: September 27, 2002
    Date of Patent: July 13, 2004
    Inventor: Steven J. Wyse
  • Patent number: 6745871
    Abstract: A composite scaffold plank for resting on two spaced, substantially parallel horizontal scaffold support members. The plank has an elongated planar panel with elongated reinforcing ribs mounted at a lateral edge substantially perpendicularly to the second major surface of the planar panel. The reinforcing ribs are substantially parallel and equally spaced from one another. There are notches defining tabs at each end of the planar panel that form a finger joint with another similar plank abutting the plank's end. Transverse channels formed in the ribs fit over the frame's horizontal support members.
    Type: Grant
    Filed: March 27, 2002
    Date of Patent: June 8, 2004
    Inventor: Chad D. Armstrong
  • Publication number: 20040094362
    Abstract: A scaffolding (10) for elevating a worker (not shown) above a floor or ground surface is disclosed. The scaffolding (10) broadly includes a pair of frames (12) and (14), cross bracing (16) coupling the frames (12,14) together, and a plurality of walkboards (18, 20, and 22) removably supported between the frames (12,14). Each of the frames (12,14) includes a plurality of slotted ledgers (32, 34, 36, 38) and (40, 42, 44, 46) coupled to and extending horizontally between corresponding support posts (24,26) and (28,30), respectively. Each ledger is configured to facilitate initial assembly of the frames (12,14) and to prevent undesired shifting of a walkboard supported thereon. For example, the ledger (38) is defined by a U-shaped wall (60) that presents an arcuate walkboard bearing support surface (62) having open, recessed slots (64,66,68,70,72) defined therein. Each slot is configured and dimensioned to receive a portion of the supported walkboard and prevent shifting of the walkboard along the ledger axis.
    Type: Application
    Filed: November 15, 2002
    Publication date: May 20, 2004
    Inventor: Steven J. Wyse
  • Publication number: 20040050621
    Abstract: Platform assemblies may be built up using a substantial number of inverted U-shaped vertical supports with platform hold down members that hold the platforms in place, thus avoiding slippage or pilferage. The hold down members form a unitary structure with the supports and platform assemblies to hold the platforms securely in place. The unitary structure of the scaffolding assembly with hold down members acts as a deterrent against pilferage of the platforms because the unitary structure does not allow the planks to be removed unless the platform assembly is substantially disassembled. It also reduces the steps required to assemble a secure platform assembly with hold down members thus saving time while still preventing slippage and pilferage. The hold down members may have holes at one end, and these holes have a diameter slightly greater than the outer diameter (OD) of the guide pipes at the junctions between vertically extending pipes.
    Type: Application
    Filed: September 13, 2002
    Publication date: March 18, 2004
    Inventors: Michael D. Masino, Jeffery J. Masino, Alan C. Rose
  • Publication number: 20030226714
    Abstract: Platform assemblies may be built up using a substantial number of inverted U-shaped vertical supports with platform hold down members that hold the platforms in place, thus avoiding slippage or pilferage. The hold down members form a unitary structure with the supports and platform assemblies to hold the platforms securely in place. The unitary structure of the scaffolding assembly with hold down members acts as a deterrent against pilferage of the platforms because the unitary structure does not allow the planks to be removed unless the platform assembly is substantially disassembled. It also reduces the steps required to assemble a secure platform assembly with hold down members thus saving time while still preventing slippage and pilferage. The hold down members have holes at one end, and these holes have a diameter slightly greater than the outer diameter (OD) of the guide pipes at the junctions between vertically extending pipes.
    Type: Application
    Filed: June 5, 2002
    Publication date: December 11, 2003
    Inventor: Michael D. Masino
  • Publication number: 20030183453
    Abstract: A composite scaffold plank for resting on two spaced, substantially parallel horizontal scaffold support members. The plank has an elongated planar panel with elongated reinforcing ribs mounted at a lateral edge substantially perpendicularly to the second major surface of the planar panel. The reinforcing ribs are substantially parallel and equally spaced from one another. There are notches defining tabs at each end of the planar panel that form a finger joint with another similar plank abutting the plank's end. Transverse channels formed in the ribs fit over the frame's horizontal support members.
    Type: Application
    Filed: March 27, 2002
    Publication date: October 2, 2003
    Inventor: Chad D. Armstrong
  • Patent number: 6530456
    Abstract: The invention relates to scaffolding, especially facade scaffolding, comprising vertical poles (11) located one behind the other, preferably in pairs, and interconnected at given vertical intervals by means of cross struts (12). Said vertical poles (11) consist preferably of individual elements (11′) and form support frames (43) with said cross struts (12). Base plates (13) are also positioned between the cross struts (12) of neighbouring support frames (43). Diagonal poles (27) are arranged between at least some of the neighbouring vertical poles (11). According to the invention, scaffolding of this type is configured in such a way that at least one end of the diagonal poles (27) engages in an aperture (16) provided in the designated vertical pole (11) by means of a hook (15, 15′). Said opening lies at least essentially in the plane defined by the axes (17) of the neighbouring vertical poles (11).
    Type: Grant
    Filed: December 19, 2001
    Date of Patent: March 11, 2003
    Assignee: PlusEight Technology AB
    Inventor: Harry Wallther
  • Patent number: 6471003
    Abstract: Scaffolding (10) having safety features for coupling scaffolding structural members so as to prevent equipment damage and worker injury from inadvertent disassembly, while permitting quick assembly and disassembly when desired. The scaffolding (10) incorporating the safety features broadly comprises legs (12); beams (14); a platform (16); coupling braces (18); platform pins (20); and platform clips (22). The first safety feature is a rounded, spring-biased, rotation-limited G-pin for adjustably coupling the beams (14) with the legs (12). The G-pin's rounded shape and a perpendicularly projecting stop (51) minimize risks of inadvertent removal. The second feature is a lockable pin (44) operable to independently couple structural members (12,14) in the event the G-pin is inadvertently removed. The third and fourth features are platform pins (20) and spring-biased platform clips (22) operable to prevent, respectively, undesirable horizontal and vertical movement of the platform (16).
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: October 29, 2002
    Inventor: Steven J. Wyse
  • Patent number: 6431316
    Abstract: A scaffold plank comprising a rectangularly configured main body which defines opposed ends, and a pair of end caps secured to respective ones of the opposed ends of the main body. Both the main body and the end caps are preferably fabricated from a recycled/recyclable plastic material. Additionally, the main body may be provided with one or more internal steel reinforcement bars for purposes of selectively increasing the level of structural integrity/rigidity thereof.
    Type: Grant
    Filed: July 11, 2000
    Date of Patent: August 13, 2002
    Inventor: Timothy Benson Bothwell
  • Patent number: 6419046
    Abstract: A scaffold end cap comprises a tapered tubular portion, a flange and a blocking member. The end cap is secured in a scaffold tube by an interference fit resulting from the compression of the end cap as it is pushed into the tube. The end cap prevents debris from entering the scaffold tube, since debris in a scaffold tube can be dangerous especially when scaffold is manipulated above ground level. In an alternative embodiment, the end cap is provided without a flange, in order that the end cap can be located entirely within a scaffold tube. Circumferential ribs are provided on the inner surface of the tubular portion, and longitudinal ribs are provided on the outer surface.
    Type: Grant
    Filed: September 14, 2000
    Date of Patent: July 16, 2002
    Assignee: Ninefields Cubby Limited
    Inventor: John Cubbison
  • Patent number: 6394228
    Abstract: An accessory for a T-post, having a longitudinal axis, comprises: a first bar having a central portion and a longitudinal axis; a second bar having a central portion and a longitudinal axis; and a connecting mechanism for fixedly but removably connecting the first and second bars together in a secure and fixed relationship to the T-post. The central portions of the first and second bars are adapted to be received around the T-post such that the longitudinal axes of the bars are substantially parallel to one another but substantially perpendicular to the longitudinal axis of the T-post.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: May 28, 2002
    Inventors: Kendall M. Stephens, Norman D. Gideon
  • Patent number: 6371245
    Abstract: A clamp for securing wood planks in side-by-side relationship when supported on a scaffolding structure, has a recess which receives the planks in such side-by-side relationship; the clamp securely engages outer side walls of a plurality of wood planks in the side-by-side relationship, with the upper faces of the planks above the recess such that an uninterrupted platform upper surface is formed by the upper faces of the planks.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: April 16, 2002
    Inventor: Flavio Luciano Diana
  • Patent number: 6318499
    Abstract: A composite scaffolding plank made from a plurality of wooden boards positioned in side to side parallel abutment. At least one of such boards is a whole natural wooden board, and at least one of such boards is a laminated wooden board. A plurality of spaced pins extend transversely through the wooden boards. A cam means on the pins pulls and holds the boards together. In addition, my invention is a method of forming wide wooden planks from two or more narrow wooden boards (as described) by positioning the boards in side to side parallel abutment and embedding a plurality of spaced pins transversely through the boards. Further, a method of increasing the strength of a wooden plank is to cut the plank longitudinally into sections, add at least one laminated wooden board, position the sections in side to side parallel abutment, and subsequently embed a plurality of spaced pins in the sections.
    Type: Grant
    Filed: May 26, 1999
    Date of Patent: November 20, 2001
    Inventors: Joseph Honein, Carl R. Cook
  • Patent number: 6223857
    Abstract: A scaffolding platform (20), having side rails (22,24), one-piece end cross members (26,28), and a panel (30) is utilized to elevate a work surface (32) provided by the panel (30). In an alternate embodiment, the end cross members (26,28) are unitary and hooks (56) are attached to the end cross members (26,28) with hook joints (92). If a hook (56) is damaged, the hook (56) can be removed without separating any of the corner joints (68) which attach the rails (22,24) to the end cross members (26,28). An intermediate cross member (31) is also provided to support the panel (30). The intermediate cross member (31) includes an upper support member (76) which engages the panel (30) and a lower support member (78) which engages the rails (22,24) to maintain spacing.
    Type: Grant
    Filed: October 28, 1999
    Date of Patent: May 1, 2001
    Inventor: Steven J. Wyse
  • Patent number: 6202789
    Abstract: A composite scaffolding plank made from a plurality of wooden boards positioned in side to side parallel abutment. At least one of such boards is a whole natural wooden board, and at least one of such boards is a laminated wooden board. A plurality of spaced pins extend transversely through the wooden boards. A cam on the pins pulls and holds the boards together. In addition, my invention is a method of forming wide wooden planks from two or more narrow wooden boards (as described) by positioning the boards in side to side parallel abutment and embedding a plurality of spaced pins transversely through the boards. Further, a method of increasing the strength of a wooden plank is to cut the plank longitudinally into sections, add at least one laminated wooden board, position the sections in side to side parallel abutment, and subsequently embed a plurality of spaced pins in the sections.
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: March 20, 2001
    Inventors: Joseph Honein, Carl R. Cook
  • Patent number: 6105723
    Abstract: A steel plank for scaffolding which comprises a thin sheet metal bendment with a top surface and a bottom surface. The steel plank also comprises an elongated bottom plate attached to the thin sheet metal bendment. The steel plank further comprises a non-slip material attached to the bottom side of the bottom plate.
    Type: Grant
    Filed: December 23, 1996
    Date of Patent: August 22, 2000
    Assignee: Harsco Corporation
    Inventor: Michael S. D'Alessio
  • Patent number: 6076991
    Abstract: An end cap system for scaffolding planks, especially for hollow core planks. The end cap includes an extrusion having a plank-receiving portion on one side and a rib profile on the other for slidingly receiving scaffolding hooks. The end cap permits similar parts to be used for a wide variety of plank widths and allows for replacement of damaged hooks or the exchange of hook configurations. In the most preferred embodiment, the hooks are fixed to the end cap, such as by a set screw, after they are slidingly located at the desired position. The end caps may be used with either "high" or "low" hooks.
    Type: Grant
    Filed: May 14, 1998
    Date of Patent: June 20, 2000
    Assignee: Safway Steel Products, Inc.
    Inventors: Stig Karlsen, Roger Frank
  • Patent number: 6045287
    Abstract: A connecting device is provided for a bearing bar consisting of a tube having such a connecting device at each of its two ends. The connecting device may be used to join horizontal and vertical scaffolding elements. The connecting device consists of a bearing head and a clamping device and is of such a design that its top edge lies in a plane with that of the tube attached thereto. In addition, the connecting device has bolts for a non-positive connection with overlying elements suspendable thereover. These constructional features of the connecting device allow the overlying elements, which have holes or eyelets to be pushed over the bolts of the bearing bar for suspending in the scaffold, to be placed close up to the post elements, so that virtually no gap between the overlying element and the post element is formed.
    Type: Grant
    Filed: December 15, 1998
    Date of Patent: April 4, 2000
    Assignee: Plettac AG
    Inventor: Wolfgang Busch
  • Patent number: 6000495
    Abstract: A scaffolding system having a first frame connected to a second frame with at least one platform disposed therebetween. The first frame includes a first set of posts connected together by an upper cross member. The second frame includes a second set of posts connected together by a lower cross member. The platform is adapted to be detachably secured to the upper cross member and sandwiched between the upper cross member and the lower cross member such that an upper surface of the lower cross member is generally flush with the platform, thus forming a continuous walking surface. The lower cross member prevents removal of the platform while the second frame is connected to the first frame.
    Type: Grant
    Filed: January 22, 1998
    Date of Patent: December 14, 1999
    Assignee: Bil-Jax, Inc.
    Inventor: David A. Brinegar
  • Patent number: 5967262
    Abstract: Platform units for scaffolding must be light and strong in design and be usable without risk of accident. Therefore, all their parts are designed for a long service life, and should also be included in the static analysis. High rigidity of the corner joints of the rectangular support frame for the platform unit is thereby advantageous as well as having the narrowest possible gaps between adjacent platform units. The invention uses for this purpose, a three-dimensional arrangement of the mounting brackets on the support frames, which combine relative structural symmetry with the fact that the mounting brackets are offset, and thus permit a narrow gap formation between the platform units. The corner joints of the support frames are, in spite of their light construction, resistant to distortion and any uncertainty due to the use of wooden planks for the floor surface is avoided by using a friendly holding frame.
    Type: Grant
    Filed: December 30, 1996
    Date of Patent: October 19, 1999
    Assignee: Krausse-Werk GmbH & Co. KG
    Inventor: Gunther Krause
  • Patent number: 5918700
    Abstract: A scaffolding component comprising an inverted channel member and an integral top part, recesses are provided at the juncture of the channel member and the top part for receiving hooks of a platform.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: July 6, 1999
    Assignee: SGB Services PLC
    Inventor: Ian K. Gregory
  • Patent number: 5915497
    Abstract: Working platforms for scaffolding must be light and functional and easily stackable. It must therefore be possible to include all their components with a long useful life in the static calculations as well. The requirements include both great rigidity in the corner joint of a rectangular bearing frame for the working platform and the smallest possible gaps between adjacent platforms. Above all, however, the smallest possible number of components must be used to keep the costs of such a working platform within limits. To this end the invention makes use of a U-shaped folded footplate (2) clamped between the longitudinal bearing members (11) of the bearing frame. If, in addition, at least the longitudinal bearing members (11) are rectangular hollow sections, no dirt or residual building material can enter the working platform.
    Type: Grant
    Filed: July 28, 1997
    Date of Patent: June 29, 1999
    Assignee: Krause-Werk GmbH & Co. KG
    Inventor: Gunther Krause
  • Patent number: 5894909
    Abstract: A scaffolding assembly having at least one pair of substantially parallel spaced-apart scaffolding components, each of which extends between a pair of substantially vertical spaced-apart uprights and supports a respective end of a deck plate extending therebetween. Each scaffolding component is adapted to receive a respective end of said deck plate and prevent accidental disengagement of said deck plate due to wind or accidental contact. Each end of the scaffolding component is provided with oppositely directed tongues extending laterally therefrom, said tongues being adapted to engage securing means mounted on each of said uprights.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: April 20, 1999
    Assignee: SGB Services PLC
    Inventor: John R. E. Cornish
  • Patent number: 5882136
    Abstract: An end cap system for scaffolding planks, especially for hollow core planks formed of fiberglass or other composite materials, is disclosed. The end cap includes an extrusion having a plank-receiving portion on one side and a rib profile on the other side for slidingly receiving scaffolding hooks. A reinforcing member is placed in the hollow core, extending between its walls, and surrounding the fastening device securing the end cap to the plank, to resist deformation of the plank by the compressive force of the fastening device. The end cap permits similar parts to be used for a wide variety of plank widths and allows for replacement of damaged hooks or the exchange of hook configurations, such as between "high" or "low" hooks.
    Type: Grant
    Filed: July 18, 1997
    Date of Patent: March 16, 1999
    Assignee: Safway Steel Products, Inc.
    Inventors: Mary B. Pyritz, Robert M. Reilly, Stig Karlsen
  • Patent number: 5868220
    Abstract: A support leg comprising an upstanding member and securing means for securing both an elongated member and a platform to the support leg.
    Type: Grant
    Filed: April 18, 1997
    Date of Patent: February 9, 1999
    Assignee: Peritech Systems Public Limited Company
    Inventor: David Ian Seale
  • Patent number: 5823292
    Abstract: A clamp connector for scaffolding must not only make it possible to join two scaffolding components rapidly and securely but also be inexpensive to manufacture, have a long life and be suitable for use with a wide variety of scaffolding designs. To this end, the invention calls for there to be an aperture (PA) in each of the shaped-section bars of the scaffolding units to be fixed together, the aperture being designed to hold a crossbar (12) and to be locked by a moving clamp (6).
    Type: Grant
    Filed: March 20, 1997
    Date of Patent: October 20, 1998
    Assignee: Krause-Werk GmbH & Co., KG
    Inventor: Gunther Krause
  • Patent number: 5769181
    Abstract: A ladder support bracket for staging in which a pair of ladders are supported in a vertical position spaced from a wall and having a staging element supported by the ladder rungs. The support bracket is a rigid A-frame and the ladder is tightly clamped between the apex portion of the frame and the crossbar.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: June 23, 1998
    Assignees: Charles F. Gussow, Chris T. Honegger
    Inventors: Charles F. Gussow, Chris T. Honegger