Static molds – Miscellaneous mold adjuncts – In situ construction engineering or building type
Reexamination Certificate
2000-12-13
2002-12-03
Callo, Laura A. (Department: 3635)
Static molds
Miscellaneous mold adjuncts
In situ construction engineering or building type
C052S127200, C052S655100, C052S749100, C052S749100, C052S749100, C403S348000
Reexamination Certificate
active
06488257
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to a concrete form structural attaching plate system, and more particularly, to a structural attaching plate system for the use as temporary attachment, such as in concrete falsework forming for bridge deck, concrete slab construction, concrete wall construction and the like.
Various types of structural concrete attach systems are used to assemble concrete falsework forms in bridge deck overhang concrete, concrete slab construction, concrete wall construction and the like. Most of such structural attach systems incorporate a fastener or wedge assembly component that serves as a structural-attaching component in the system. For example, one such system made by Universal form clamp co., Bellwood, Ill. includes a coil loop straight insert, which incorporates a single or double coil loop component. The double loop component allows a fastener to be used through the loops and through a support member. The support member, wood, steel, or the like is attached to a system of load carrying components to control the pressure or weight of a concrete form or slab. Plywood or other forms of sheathing is attached to the support member to mold or form the surface of structural concrete. The load carrying components are spaced according to their load carrying capacity along the length of the support member. The support member is held into a firm position using the coil loop straight insert and against the support component. A load-carrying tie is positioned through the load carrying component, between the support members and through the plywood or sheathing. The various locations and spacing of the load carrying component along the support member requires a hole that is fixed in location for the fastener.
Another type of system is shown in the B3S L-Bolts made by the Williams Form Engineering Corporation of Grand rapids, Mich. includes an L-shaped rod, threaded on each end, which is attached to a support member. The support member is attached to an alignment member or load-carrying member at the free end of the L-Bolt. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. A hole that has a fixed location must be incorporated and positioned in the support member to attach the L-Bolt.
Another type of system is shown in the F1D-02 made by the Williams Form Engineering Corporation of Grand Rapids, Mich. includes a wedge type L-Bolt, which has a pressed recess on each end of the L-Bolt. The pressed recess incorporates as wedge device to tighten against the support member. The support member is attached to an alignment member or load-carrying member at the free end of the L-Bolt. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. A hole that has a fixed location must be incorporated and positioned in the support member to attach the wedge type L-Bolt.
Another type of system is shown in the F1D-06 made by the Williams Form Engineering Corporation of Grand Rapids, Mich. includes a steel plate for positioning the support member onto the load carrying component. The attachment plate incorporates a series of holes to fix the attach plate to the support member. The load-carrying member is then set atop the plate and supported by the attachment plate. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. A fixed steel plate location must be positioned. in the support member to attach the load-carrying member.
Another type of system is shown in the F2E Coil Waler Holder made by the Williams Form Engineering Corporation of Grand Rapids, Mich. includes a coil thread welded to an attachment plate forming an attachment holder which is fastened to a support member. A coil bolt fastener and plate is used to attach the load carrying member to the support member. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. An attachment holder is positioned and attached for each load-carrying member.
Another type of system is shown in the B9G Slotted coil bolt made by the Williams Form Engineering Corporation of Grand Rapids, Mich. includes a threaded fastener and attachment plate. The support member is attached to a modular forming surface and is used can be used as an alignment component or load-bearing member. The modular forming component is used for the molding or support of structural concrete. A fixed position must be incorporated into the modular forming surface to attach the support component.
Another type of system is shown in the A2I linear clamp made by the Williams Form Engineering Corporation of Grand Rapids, Mich. includes an attachment plate, a looped rod component and a rotating wedge. The attachment plate is fastened to a support member and the looped rod encases the load carrying or alignment member. The wedge component is engaged onto the load carrying or alignment member and tightened. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. The attachment plate must be positioned and fixed on the support member for each alignment or load-bearing member attachment. As the spacing of the alignment or load-bearing member is changed, the attachment plate must be moved or an additional A2I system installed.
Another type of attach system is shown in the Cam-Lock Forming System, which is made by Gates & Sons, Inc. of Denver, Colo. which includes a cam lock bracket and lever assembly. The support member is attached to the plywood or sheathing using the cam lock bracket and a load-bearing tie assembly. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. The support member will support the plywood or sheathing between each cam lock bracket. The alignment member is attached to the support member with the use of a stiff-back cam. A hole must be positioned in the plywood or sheathing to locate and position the cam lock bracket. A cam lock bracket must be fixed and positioned to attach an alignment member. As the spacing of the cam lock bracket is required, a hole must be re-positioned into the plywood or sheathing for the attachment of the cam lock bracket. As the spacing of the stiff-back cam is required, the cam lock bracket must be re-positioned.
Another type of attach system, which is in the system made by Symons Corporation, of Des Plaines, Ill. include the use of a attachment clip, clamping nut and fastener bolt. The aluminum support member has a fixed formed slot along the length of the support member for the clamping nut engagement. The clamping nut is contained within the support member's formed slot and the attachment clip is fastened to the load-bearing member. The aluminum support member contains a wood nail strip to attach plywood or sheathing. Plywood or sheathing is attached to the support member for the molding or support of structural concrete. The formed slot in the support member is an integral component of the support member. The nail strip for plywood or sheathing attachment can be replaced, as usage requires.
Another type of attach system, which is in the system made by Doka International, of Deutsche Doka, Schalungstechnik GmbH, include the use of H20 flange clamp on an I-shaped wood support member, the attachment will include a U-shaped loop plate component and two fastener components. The U-shaped loop plate component will engage the flange of a steel load-carrying member and will engage the two fastener components on the opposite flange of the load-bearing member. The plate portion of the U-shaped loop plate component will engage the lower flange surface of the I-shaped wood support member. A fastening nut on the two fastening components will draw the plate portion of the U-shaped loop plate component against the lower flange surface of the I-shaped wood support member. Plywood or sheathing is attached to the I-shaped wood support member for the molding or support of structural concrete.
Another type of attach system
Callo Laura A.
Denk Paul M.
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