Stackable Patents (Class 182/178.1)
-
Patent number: 10525300Abstract: A multipurpose exercise stand for compound fitness training includes a push-training bar assembly, and a base assembly adapted for locating the push-training bar assembly above a supporting surface. The push-training bar assembly includes first and second sets of parallel inside and outside dip grip segments. The first and second sets are sufficiently spaced apart to accommodate body lifting and body lowering movement of a user performing a dip exercise while gripping either of the two inside dip grip segments or the two outside dip grip segments.Type: GrantFiled: June 11, 2012Date of Patent: January 7, 2020Inventor: Donald Jeffrey Boatwright
-
Patent number: 10299594Abstract: A tie bar for connecting two horizontal beams includes first and second elongate walls arranged parallel to each other, and a third elongate wall arranged perpendicular to the first and second elongate walls and coupled to a lateral side of each of the first and second elongate walls. The tie bar further includes at least one pair of hook elements positioned at terminal ends of at least one of the first, second, or third elongate walls. Each of the hook elements includes a depending tab configured to be received by an elongate slot of a horizontal beam of a shelving unit. The first and second elongate walls may be top and bottom walls, respectively, the third elongate wall may be a side wall, and the at least one pair of hook elements may include first and second hook elements positioned on the second elongate wall.Type: GrantFiled: March 27, 2018Date of Patent: May 28, 2019Assignee: Edsal Manufacturing Company, Inc.Inventors: Mitchell Liss, David J. Wojtowicz, Anthony J. Troyner, Jeff Lamber, Mitchell E. Bianchin, Scott Fitzgerald
-
Patent number: 9561935Abstract: A method in the manufacture of an elevator, in which is formed an elevator arrangement, which includes an elevator hoistway, at least one elevator unit to be moved in the elevator hoistway, said unit(s) including at least an elevator car, a movable supporting structure in the elevator hoistway above the elevator car, roping suspended from the supporting structure for supporting the aforementioned at least one elevator unit to be moved, in which method the following steps are performed: a) the elevator car is used to transport passengers and/or freight, after which b) the supporting structure is lifted in the elevator hoistway, after which c) the elevator car is used to transport passengers and/or freight. In the method, between steps a) and c), additionally a step x) is performed, in which the section of the roping is lifted, separately from the lifting of the supporting structure, higher up in the elevator hoistway.Type: GrantFiled: June 23, 2014Date of Patent: February 7, 2017Assignee: KONE CORPORATIONInventor: Jussi Perälä
-
Patent number: 8978822Abstract: The invention relates to a vertical frame made of metal, particularly a scaffolding frame, having at least one first vertical shaft (21) and a bar-shaped, horizontal transversal arm (23) extending away from the same, the shaft and arm being permanently connected to each other, having the following characteristics: a first perforated disk having a plurality of openings is permanently mounted to the shaft (21), wherein the perforated disk is disposed concentrically to the shaft (21) and surrounds the shaft (21) in a flange manner; at least one first mounting device is provided on the shaft (21) at a distance to the perforated disk for mounting a fall-protection means; the transversal arm (23) on one end thereof has a first connecting head, and on the second end thereof facing away from the first end has a second connecting head by which the transversal arm (23) can be secured, or is secured, on a second vertical shaft (21) via a second perforated disk equipped with a plurality of openings by forming a verticalType: GrantFiled: October 5, 2007Date of Patent: March 17, 2015Assignee: Wilhelm Layher Verwaltungs-GmbHInventor: Helmut Kreller
-
Patent number: 8794381Abstract: A bracket (60) for securing a first kickboard (62) transversely of a second kickboard (54) comprises a socket (64) for receiving an end of the first kickboard and a clip (70) for securing the bracket to the second kickboard, the clip comprising a lateral extension (76) aligned with the longitudinal axis of the second kickboard for stabilizing the bracket thereon. Also disclosed are (1) a telescopic rail (46) for use in forming a guard or safety barrier for builders' trestles, staging, scaffolding or the like, comprising inner and outer telescopic parts (80, 82), in which the inner part is prevented from sliding free of the outer part in use; (2) a brace for stabilizing adjacent trestles; (3) a ladder support bracket; (4) removable safety rail components and (5) a longitudinal kickboard bracket attached to a trestle crossmember.Type: GrantFiled: April 28, 2005Date of Patent: August 5, 2014Assignee: Safestand LimitedInventor: Liam Clear
-
Patent number: 8678136Abstract: A tray is adapted to be attached to a scaffold, which may be achieved either through a clamp or by inserting an element into the end of a scaffold vertical member. A support structure of the tray may be affixed to a support structure, wherein the support structure is configured to provide a surface on which the user may position certain items. The tray has at least two axes of rotation with respect to the structure to which it is mounted, and the tray may be configured to be height adjustable. In one embodiment, the tray is configured specifically to support a paint container, and in another embodiment the tray is configured so that the support structure is formed as a tub.Type: GrantFiled: August 27, 2009Date of Patent: March 25, 2014Inventor: Lori Hamilton
-
Patent number: 8439166Abstract: A closed vertical frame for constructing a supporting frame, including at least two vertical supports disposed at a horizontal distance from each other, and at least two horizontal arms disposed at a vertical distance from each other. Each extends between the at least two vertical supports transversely to the vertical supports. A first horizontal arm is welded on both ends to a respective vertical support near the upper end thereof, and a second horizontal arm is welded on both ends likewise to these vertical supports near the lower end thereof. The vertical frame is reinforced with at least one diagonal rod extending between two vertical supports and two horizontal arms and is welded onto two vertical supports. Near the respective upper and/or lower end, a perforated disk having openings is welded to connect holding devices.Type: GrantFiled: November 8, 2008Date of Patent: May 14, 2013Assignee: Wilhelm Layher Verwaltungs-GmbHInventor: Helmut Kreller
-
Publication number: 20130048430Abstract: A scaffolding module comprising: a frame that, when in an erected configuration, defines an interior space; and a plurality of mounting regions that allow the module to be mounted with other said scaffolding modules, wherein when so mounted, the module frames are able to be interconnected to form a support structure for one or more scaffolding platforms.Type: ApplicationFiled: February 25, 2011Publication date: February 28, 2013Inventor: John C. Preston
-
Patent number: 8136633Abstract: A modified scaffold support post includes areas of reduced diameter, intermediate the length of the support post, having connecting rosettes secured to these reduced diameter areas. Preferably the areas of reduced diameter correspond to diameter of support tubes used as uprights in scaffold frames in North America (approximately 1.69 inches in outer diameter). Preferably the areas of reduced diameter are formed by swaging a tube of a larger diameter, typically approximately 1.90 inches. The modified support post is advantageously used with scaffold frames with connecting rosettes appropriately positioned on the uprights of the scaffold frames.Type: GrantFiled: August 29, 2008Date of Patent: March 20, 2012Inventor: Peter J. Rogers
-
Patent number: 8104576Abstract: The invention relates to scaffold steps, with two separate side pieces (11) and a plurality of separate step elements (13, 13?, 13?), which can be detachably coupled to each other and to the side pieces.Type: GrantFiled: May 22, 2006Date of Patent: January 31, 2012Assignee: Peri GmbHInventor: Artur Schwoerer
-
Patent number: 8076619Abstract: A heated stair mat includes a plurality of coextensively shaped mats configured in a staggered arrangement along a plurality of vertical and horizontal walls of the existing steps such that odd ones of the mats cover top surfaces of the existing steps while even ones of the mats cover front surfaces of the existing steps. Each of such mats is provided with a plurality of laterally spanning grooves juxtaposed between the heating elements and formed on top surfaces of the mats respectively. Such grooves have axially opposed open end portions for directing fluids and debris away from the top surface of the mats. The device further includes a plurality of heating elements, a mechanism for rotatably connecting the odd and even mats to each other, and a plurality of ring-shaped couplings.Type: GrantFiled: October 18, 2007Date of Patent: December 13, 2011Inventor: Mason Wingale
-
Patent number: 7975803Abstract: The invention relates to dismantlable scaffolding comprising accessible platforms on a plurality of levels and a multitude of vertical supports carrying said platforms. Said vertical supports preferably consist of several sections which can be fixed one on top of the other, are arranged at a distance from each other, and are preferably connected by means of platform bars at predetermined vertical distances. Said supports carry perforated anchor plates at predetermined vertical distances. Connecting railing elements can be applied to adjacent vertical supports. In order to apply at least one railing element above a platform, at least the highest railing elements of a level can be applied to the associated perforated anchor plate by means of a railing adapter element. When applied to the perforated anchor plate, said adapter carries a railing holding element above the anchor plate.Type: GrantFiled: June 13, 2002Date of Patent: July 12, 2011Assignee: Peri GmbHInventor: Arthur Schwoerer
-
Publication number: 20090301815Abstract: A modified scaffold support post includes areas of reduced diameter, intermediate the length of the support post, having connecting rosettes secured to these reduced diameter areas. Preferably the areas of reduced diameter correspond to diameter of support tubes used as uprights in scaffold frames in North America (approximately 1.69 inches in outer diameter). Preferably the areas of reduced diameter are formed by swaging a tube of a larger diameter, typically approximately 1.90 inches. The modified support post is advantageously used with scaffold frames with connecting rosettes appropriately positioned on the uprights of the scaffold frames.Type: ApplicationFiled: August 29, 2008Publication date: December 10, 2009Inventor: Peter J. Rogers
-
Patent number: 7258199Abstract: A multilevel access platform comprising a plurality of stackable modules. Each module includes elongated column members that are generally parallel and coextensive, and a plurality of levels of elongated lateral members that extend transversely between and are connected to the column members. Each level of the lateral members is located at vertically spaced positions relative to the column members and each of the lateral members border a side of the module. At least one platform section is provided for each level and is supported by one level of the lateral members. The stackable modules include a staircase that extends between each level of the lateral members. The multilevel access platform includes a base assembly provided to stabilize and independently secure the multilevel platform. A method for erecting the multilevel access platform includes the step of stacking each module to meet a desired height of a building construction.Type: GrantFiled: May 27, 2004Date of Patent: August 21, 2007Inventor: Richard Hayes, Sr.
-
Patent number: 7228940Abstract: A replaceable locking and securing device for securing a first member to a second member includes a replaceable bracket, a lock and a fastener. The bracket defines one opening when the bracket is operatively connected to the first member.Type: GrantFiled: August 11, 2004Date of Patent: June 12, 2007Assignee: bil-jax, inc.Inventor: Matthew D. Stringer
-
Patent number: 7195101Abstract: The scaffold has demountable elements which can be connected to one another to make up lateral frames that incorporate vertical members, flooring platforms or planks, diagonal bracing bars, and handrail poles, and is characterized in that the said lateral frames are composed of an inverted L-shaped element and a straight pole which is connected, by a quick coupling without clearance, to the horizontal arm of the L, and is optionally complemented by further poles to make up the lateral frames, both the straight pole and the vertical or longer arm of the inverted L-shaped element being provided with quick couplings with swinging clamping pieces which are intended to receive the flattened ends of reinforcing tie rods and safety-rail poles.Type: GrantFiled: June 1, 2005Date of Patent: March 27, 2007Assignee: Ingenieria de Encofrados y Servicios, S.L.Inventor: Jose Luis Ubinana Felix
-
Patent number: 7188707Abstract: 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: GrantFiled: October 7, 2005Date of Patent: March 13, 2007Assignee: Bothwell Enterprises, Inc.Inventors: Timothy B. Bothwell, Roy Watson
-
Patent number: 7077239Abstract: The invention is a scaffold access system for use in a scaffold frame of horizontal and vertical scaffold members. The system includes double barrel scaffold horizontal member, a series of short scaffold boards, a series of long scaffold boards, a short vertical scaffold member, a safety gate, and a series of short horizontal members. The double barrel scaffold horizontal member has a upper tube and a lower tube joined in a vertical relationship and a third tube slidable in the lower tube. Each tube has an interior and an exterior end. The upper tube and the third tube have an attachment member positioned on its respective exterior end. The upper tube has an upstanding vertical stub, to which is attached the short vertical scaffold member. The short scaffold boards and the long scaffold boards are placed on the scaffold frame to define a scaffold deck with an access opening.Type: GrantFiled: March 12, 2004Date of Patent: July 18, 2006Assignee: Deltak Manufacturing, Inc.Inventors: Yates W. Hayman, Ken Hensley, Robert E. Lea
-
Patent number: 7032712Abstract: 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: GrantFiled: February 22, 2002Date of Patent: April 25, 2006Assignee: Peri GmbHInventor: Artur Schwörer
-
Patent number: 7017710Abstract: A scaffolding element used in conjunction with an upright alignment member, such as a pole. The scaffolding element having at least one connector member at each end portion thereof. The opposing connector members are oriented transversely relative to one another, such that the connector members of adjacent scaffolding elements can interlock at right angles to one another, forming a structure of interlocking scaffolding elements. The connector members can be formed from a metal plate or can be a casting, for example.Type: GrantFiled: April 3, 2001Date of Patent: March 28, 2006Inventors: Pieter Wouter Booysen, Michael Walter Seitz
-
Patent number: 6994187Abstract: A scaffold pick-up device having a vertical joint clamp which bridges a vertical scaffold joint to stiffen the bridged vertical joint, and a scaffold lift assembly, which attaches onto the top section of a vertical scaffold member and has an attachment point for a shackle or other lifting gear.Type: GrantFiled: August 2, 2004Date of Patent: February 7, 2006Inventors: Ken Hensley, Yates W. Hayman
-
Patent number: 6953106Abstract: A collapsible scaffolding tower having four uprights arranged in two pairs, wherein each of the uprights is formed of three or more telescopically collapsible sections and rigid horizontal bars extend between the sections of the uprights in each pair to form two telescopically collapsible ladder structures, which rest directly on the ground when the tower is in use.Type: GrantFiled: May 30, 2002Date of Patent: October 11, 2005Inventors: James Thomas Weston, Richard Weston
-
Patent number: 6938730Abstract: The adjustable height workhorse is a height adjustable workspace for allowing a worker to easily hang sheet rock on walls at elevated heights. The workhorse provides a platform supported by a frame having a plurality of vertical posts and a plurality of horizontal height adjustment bars. The frame is positioned on a base board. A plurality of wheels is disposed underneath of the base board. The wheels allow the workhorse to be repositioned while the worker is on the platform. The height adjustment bars are mounted on either side of the frame. The bars are positioned at varying heights so that the worker may adjust the height of the platform. The platform is disposed across the frame and is supported by the height adjusting bars. The platform is of suitable size to support a worker and the worker's sheet rock material while providing enough room for the worker to operate.Type: GrantFiled: September 11, 2003Date of Patent: September 6, 2005Inventor: Nathaniel Hairston
-
Patent number: 6932195Abstract: An intermediate scaffold member join comprising a top side, a first side and a second side cooperating to form a channel therebetween. The channel is sized to accept a horizontal scaffold member. The first side has a clamp for attaching to a horizontal scaffold member, the clamp joining a horizontal scaffold member substantially perpendicular to a horizontal scaffold member positioned in the channel. Positioned on the top side is a vertical stub directed away from the channel, where the vertical stub is connectable to a vertical scaffold member.Type: GrantFiled: March 12, 2004Date of Patent: August 23, 2005Assignee: Deltak Manufacturing, Inc.Inventors: Yates Westley Hayman, Ken Hensley, Robert E. Lea
-
Publication number: 20040231922Abstract: The invention relates to dismantlable scaffolding comprising accessible platforms on a plurality of levels and a multitude of vertical supports carrying said platforms. Said vertical supports preferably consist of several sections which can be fixed one on top of the other, are arranged at a distance from each other, and are preferably connected by means of platform bars at pre-determined vertical distances. Said supports carry perforated anchor plates at pre-determined vertical distances. Connecting railing elements can be applied to adjacent vertical supports. In order to apply at least one railing element above a platform, at least the highest rating elements of a level can be applied to the associated perforated anchor plate by means of a railing adapter element. When applied to the perforated anchor plate, said adapter carries a railing holding element above the anchor plate.Type: ApplicationFiled: June 9, 2004Publication date: November 25, 2004Inventor: Arthur Schwoerer
-
Patent number: 6814184Abstract: A high-rigidity structure is formed using vertical column members comprising hollow right cylinders with four integral, radially-projecting, equally-spaced flanges. The flanges have a plurality of holes for mounting structural elements along the length of the columns. A set of platforms may be supported by structure that resides in the space immediately below the platforms, thus access to the platforms is unobstructed by support structure for the platforms above. This arrangement allows the platform to be serviced by hoists from more than one side, and for access from the hoists to be unobstructed.Type: GrantFiled: February 27, 2001Date of Patent: November 9, 2004Inventor: Lawrence Blinn, Jr.
-
Publication number: 20040200668Abstract: A multi-level construction scaffold comprises a pair of H-shaped end frames spaced by horizontal guard rails. The guard rails are pivotally connected at opposed ends thereof to the end frame members, thereby allowing the guard rails to pivot in parallel when one of the frame member is lifted relative to the other. Each end frame includes a pair of uprights interconnected by a horizontal platform support located at a distance below the guard rails engaged with the end frames. In this way, the safety guard rails of a next level to be erected can be installed directly from the underlying level.Type: ApplicationFiled: April 14, 2003Publication date: October 14, 2004Inventor: Benoit Duplessis
-
Patent number: 6779631Abstract: A scaffold pick-up device having a vertical joint clamp which bridges a vertical scaffold joint to stiffen the bridged vertical joint, and a scaffold lift assembly, which attaches onto the top section of a vertical scaffold member and has an attachment point for a shackle or other lifting gear.Type: GrantFiled: June 26, 2001Date of Patent: August 24, 2004Assignee: Deltak Manufacturing, Inc.Inventors: Ken Hensley, Yates Westley Hayman
-
Patent number: 6739429Abstract: A corner scaffold structure is comprised of three vertical legs. These three legs are connected to one another at their upper distal ends by three horizontal legs which generally form a right isosceles triangle. Similarly, there are three horizontal legs connected to and joining the vertical legs near the lower distal ends thereof. Because of the three-dimensional geometry of the corner scaffold structure, multiple hop irons can be secured to each side of the structure to provide additional support to scaffold planks, increasing their stability.Type: GrantFiled: October 17, 2001Date of Patent: May 25, 2004Inventor: Gregory Peals
-
Patent number: 6691828Abstract: A scaffold stringer which is a plate and a series of tread mounts attached at substantially uniform distances along the plate, the tread mounts forming an angle with the plate, each tread mount having an associated finger projection positioned above each tread mount and projecting outwardly from the stringer, the scaffold stringer additionally has least one attachment member for attaching the stringer to a scaffold structure.Type: GrantFiled: June 14, 2002Date of Patent: February 17, 2004Assignee: Deltak Manufacturing, Inc.Inventors: Yates Westley Hayman, Kenneth Ray Hensley
-
Publication number: 20030230454Abstract: Provided herein is a stand useful by hunters to observe or hunt game in remote locations. A hunting stand according to the invention is readily assembled and disassembled by virtue of connective means disclosed. A hunting stand according to the invention is readily portable to locations inaccessible to hunting stands of the prior art, and has greater structural stability over prior hunting stands.Type: ApplicationFiled: June 17, 2002Publication date: December 18, 2003Inventor: George Morgan
-
Publication number: 20030226714Abstract: 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: ApplicationFiled: June 5, 2002Publication date: December 11, 2003Inventor: Michael D. Masino
-
Patent number: 6585083Abstract: Two ladders are connected together with cross-braces to form a scaffold. Platforms of the scaffold are supported on rungs of the ladders. A C-shaped bracket connects to the ladder legs. The bracket has an ear for connecting a brace.Type: GrantFiled: February 16, 2001Date of Patent: July 1, 2003Inventor: Roland R. Santarlasci
-
Patent number: 6578667Abstract: An access platform comprising a series of stackable polyurethane foam block assemblies that when properly secured to each other creates a set of steps and handholds similar to a ladder. At the top of the platform a maintenance person can stand on a nonskid surface and perform the work needed at any required height. The ladder is radially curved to fit between the thrust reverser sleeve (deployed) and the inner fan duct wall. This radial diameter between the GE, Rolls Royce and Pratt Whitney engines varies within inches. The main access blocks of the access platform can be used on all three engines by using different foam wedges and wall blocks to secure the assembly tightly in place. Over 70% of the blocks are useable on all three engine types, thus reducing the number of overall parts required.Type: GrantFiled: February 23, 2001Date of Patent: June 17, 2003Assignee: The Boeing CompanyInventors: Thomas R. Weneck, Mickey A. Williamson
-
Patent number: 6557666Abstract: A modular hoarding includes vertical posts secured to the ground. The vertical posts are spaced apart. Detachable, horizontally oriented cross-members are secured to the vertical posts. Detachable wall panels are secured to the horizontally oriented cross-members. The wall panels are secured in abutting positions to form a modular wall structure. The cross-members and wall panels are secured to the posts and cross-members respectively so that the cross-members and panels may be detached after use. The cross-members may be secured at various selected positions along the vertical posts. Similarly, the wall panels may be secured to the cross-members at various selected positions relative to the cross-members.Type: GrantFiled: December 17, 1999Date of Patent: May 6, 2003Inventor: Jean Drouin
-
Publication number: 20030047382Abstract: A safety apparatus capable of installation around the top level of a scaffolding from one scaffolding level below includes a plurality of support posts and rails. The support posts each have a set of hooks for pivotably attaching rails, and are each capable of attachment to a scaffolding by workers at a lower level so that a portion of the support post extends above the scaffolding's top level work surface. Apparatus installation entails pivotably attaching rails to a first support post, which is raised to the edge of the scaffolding and attached. A second support post is then pivotably attached to the free ends of the rails and similarly raised and attached to form a barrier along one edge of the scaffolding. Auxiliary rails may be pivotably attached to an installed support post from the lower level, and the free ends of these auxiliary rails may be pivotably attached to a third support post, which may then be raised and attached to form an adjacent safety barrier.Type: ApplicationFiled: September 7, 2001Publication date: March 13, 2003Inventor: Danny Panacci
-
Patent number: 6450291Abstract: A fram with a support post, a first connector support member mounted at an intermediate position of the post and a second connector support member or members mounted at an upper or lower position, or both the upper and the lower positions, of the support post. A lateral member is secured to a side portion of the support post in a fixed, removable or rotatable state. A connector is mounted at an outer end of the lateral member at a vertical position corresponding to the first or the second connector support member.Type: GrantFiled: August 28, 1998Date of Patent: September 17, 2002Assignee: Nisso Sangyo, Co., Ltd.Inventor: Tatsuo Ono
-
Patent number: 6443262Abstract: A tubular frame scaffolding system including base pads, vertical trusses, work platforms, access ladders, diagonal support braces, horizontal guard rails, intermediate guard rail panels, top guard rail panels, top guard rail posts, and toeboards. The guard rails and the toeboards act as safety devices to protect against accidental falls during the use of the tubular frame scaffolding system.Type: GrantFiled: December 30, 1999Date of Patent: September 3, 2002Assignee: Waco International CorporationInventor: Rached N. Karanouh
-
Patent number: 6435305Abstract: A stackable step stool having a platform and obtusely angled legs where the design of the stackable step stool allows the stackable step stools to be stacked on top of one another in an alternating manner. The platform is typically rectangular with rounded corners. A raised ridge surrounds the top surface of the platform. The support frame consists of two inverted U-shaped legs. Each of the inverted U-shaped legs has a center portion with two obtusely angled leg portions extending from the center portion. The center portions of the inverted U-shaped legs attach to opposite sides of the platform. The obtusely angled legs are angled away from the platform such that the stackable step stools can be stacked on top of one another in an alternating manner. The stackable step stools are stacked on top of one another with the upper stackable step stool being displaced by at least the width of the legs. Additional stackable step stools can be stacked on top of the stack in an alternating manner.Type: GrantFiled: May 29, 1998Date of Patent: August 20, 2002Assignee: MECO CorporationInventor: Eric A. Ward
-
Publication number: 20020096398Abstract: Top rails of a ladder, where the top rails include a left and right top rail, each attachable to or forming part of the left and right hand rails respectively of the ladder. The two top rails are designed to diverge, creating room for a climber to easily pass between the two top rails. Each top rail is attachable to either a scaffold horizontal or vertical member through an attachment member positioned at or near the end of each top rail.Type: ApplicationFiled: January 22, 2001Publication date: July 25, 2002Inventor: Yates Westley Hayman
-
Patent number: 6415891Abstract: A scaffold stringer which is plate and a series of tread mounts attached at substantially uniform distances along the plate, the tread mounts forming an angle with the plate, each tread mount having an associated finger projection positioned above each tread mount and projecting outwardly from the stringer, the scaffold stringer additionally has least one attachment member for attaching the stringer to a scaffold structure.Type: GrantFiled: November 8, 2000Date of Patent: July 9, 2002Inventors: Yates Westley Hayman, Kenneth Ray Hensley
-
Patent number: 6408587Abstract: A structural member, e.g. a truss for erection of temporary structures, comprises a number of elongate elements disposed in spaced generally parallel relationship to one another with transversely extending elements therebetween, and an element extending longitudinally of the structural member has a formation extending lengthwise of it for engagement by an attachment member which is to be retained to the longitudinally extending element at any of a range of positions therealong. The attachment member may provide for connection of a safety element to the structural member, and be freely movable therealong in use.Type: GrantFiled: December 21, 2000Date of Patent: June 25, 2002Assignee: Total Fabrications LimitedInventors: Christopher Patrick Noel Cronin, Neil Howard Darracott
-
Patent number: 6405830Abstract: A scaffold toeboard system for use on a scaffold where the system includes a bracket attachable to a horizontal scaffold frame member, a first sleeve attached to the bracket, where the sleeve has at least one slot, and a toeboard having two ends, with each end having a clip section which is insertable into the sleeve slot, and a lock, where the lock is a second sleeve slidable with respect to the first sleeve and which engages with the clip section to prevent removal of the toeboard.Type: GrantFiled: June 28, 2000Date of Patent: June 18, 2002Assignee: Deltak Manufacturing, Inc.Inventor: Yates Westley Hayman
-
Publication number: 20020036118Abstract: It is intended to provide a frame having versatility, superior in assembling performance, easy to be assembled and disassembled, easy to handle and not restricted by the place for custody, as well as a prefabricated scaffolding, a shoring, or a support beam, which is very economical.Type: ApplicationFiled: August 28, 1998Publication date: March 28, 2002Applicant: NISSO SANGYO, CO. LTD.Inventor: TATSUO ONO
-
Patent number: 6354402Abstract: 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 each 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: GrantFiled: June 16, 2000Date of Patent: March 12, 2002Inventor: Michael D. Masino
-
Publication number: 20010013446Abstract: A scaffolding frame comprising two parallel posts which are connected by two traverses arranged perpendicularly with respect to the posts. The lower traverse is removably suspended on suspension knobs on the posts. The suspension knobs have a connection which is essentially T-shaped in cross section, whereby the lower traverse has angled brackets at its ends, each of which has a recess therein, which in the upper region is the same as or insignificantly wider than the shank of the T-shaped connection, and in the lower region is the same as or insignificantly wider than the head of the T-shaped connection. The connections extend in the mounted state of the traverse through the recesses. The brackets each have on the outwardly facing surface above the recesses a flange which rests on the upper side of the free end of the suspension knob.Type: ApplicationFiled: January 25, 2001Publication date: August 16, 2001Inventor: Guenther Krause
-
Patent number: 6223856Abstract: The invention relates to a dismountable scaffolding with vertical struts and horizontal struts. A base plate extends between said struts and is provided with hook-shaped end fittings on each front face. Said base plate can be placed on a rail section in such a way that vertical locking or unlocking can be selectably achieved by sliding the end fitting in the direction of the rail section. Horizontal antislip locking is achieved and cancelled by raising the end fitting, thereby preventing said fitting from sliding into an inactive vertical locking position when it is in an active vertical position.Type: GrantFiled: November 24, 1999Date of Patent: May 1, 2001Assignee: Peri GmbHInventor: Artur Schwoerer
-
Patent number: 6220391Abstract: A scaffolding structure is configured to provide dual walk-through areas with each walk-through area being at different elevations of a scaffolding section. Each section of the scaffolding structure includes two end frames with each end frame having a forward column, a center column, and a rearward column. The forward and center columns are connected by a walk board support and the center and rearward columns are connected by a work board support. The end frames are interconnected by a walk board joined at one end with the walk board support of one end frame and joined at the other end with the walk board support of the other end frame. A work board also interconnects the end frames in similar fashion with one end of the work board joined with the work board support of one end frame and the other end of the work board joined with the work board support of the other end frame.Type: GrantFiled: October 6, 1999Date of Patent: April 24, 2001Assignee: WCM Development CompanyInventor: Bethel Y. White