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Class Information
Number: 52/633
Name: Static structures (e.g., buildings) > Openwork; e.g., truss, trellis, grille, screen, frame, or rebar chair
Description: Structure which, per se, or when resting on a supporting surface defines an area having through passages or openings even though in use such passages or openings are filled by material in which the structure may be embedded, said structure consisting of: (1) a perforated sheet (2) plural members held at spaced intervals, (3) a single elongated member shaped to define an area or (4) means spacing an elongated member from a surface, e.g., truss, frame, trellis, lattice, grating, grid, grille, screen, ring, loop, reinforcing rod spacer (often called a rebar chair), foraminous sheet and the like.


Sub-classes under this class:

Class Number Class Name Patents
52/645 Components adjustably or collapsibly connected 211
52/639 Curvilinear or peaked truss 119
52/659 Embedded-type free, discrete elements; e.g., set or rings 48
52/660 Fabric or lattice; e.g., indeterminate grating 90
52/656.1 Outside corner or peripherally bordered (i.e., framing, etc.) 191
52/697 Shaft with truss-braced cross-arm 29
52/690 Side-by-side terminus shafts; e.g., truss 158
52/677 Spacer-positioner; e.g., rebar chair 136
52/637 Superimposed three-dimensional units 62
52/648.1 Three-dimensional space-defining 123
52/634 Truss with unitary chord and web; e.g., sheet metal 34
52/647 Wire connected to flange of i- or t-type member 8


Patents under this class:
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Patent Number Title Of Patent Date Issued
7451575 Floor system Nov. 18, 2008
7441990 Process for the construction of a segment of an open-air work by prefabricated structural members, and prefabricated structural member related thereto Oct. 28, 2008
7318302 Equipment support for a metal building Jan. 15, 2008
7278631 Composite support system for a fill media cooling tower Oct. 9, 2007
7251919 Lightweight building component Aug. 7, 2007
7228670 Structural truss and method of making same Jun. 12, 2007
7174689 Concrete anchor float Feb. 13, 2007
7171792 Pipe and cable truss system Feb. 6, 2007
7159365 System for making walls Jan. 9, 2007
7160601 Entryway with dimensionally stable plastic components Jan. 9, 2007
7152368 Garden trellis Dec. 26, 2006
7116282 Tower reinforcement Oct. 3, 2006
7082707 Support truss for a messaging sign Aug. 1, 2006
6993879 Molded plastic truss work Feb. 7, 2006
6990782 Method for assembling building with thin and lightweight shaped-steel members Jan. 31, 2006
6920721 Building system Jul. 26, 2005
6892502 Space frame support structure employing weld-free, single-cast structural connectors for highway signs May. 17, 2005
6871469 Triangulation of a lattice girder, in particular of a jib element for a tower crane Mar. 29, 2005
6854237 Structural walls Feb. 15, 2005
6763645 Protecting building frames from fire and heat to avoid catastrophic failure Jul. 20, 2004
6742912 Light Straightener Jun. 1, 2004
6694700 Fastener attaching frame members of a patio enclosure Feb. 24, 2004
6675546 Universal connector Jan. 13, 2004
6655102 Camouflaged structure and method of camouflaging a structure against a background having a generally uniform composition Dec. 2, 2003
6553736 Interlocking truss system Apr. 29, 2003
6513298 Web connector Feb. 4, 2003
6460307 Boom attachment for a prime mover Oct. 8, 2002
6412246 Structural truss Jul. 2, 2002
6378264 Structure body and method of manufacture thereof Apr. 30, 2002
6354056 Apparatus and method for providing a reinforced roof truss Mar. 12, 2002
6321502 Method of making connector hub Nov. 27, 2001
6302474 Door reinforcement device Oct. 16, 2001
6295770 Steel frame building structure Oct. 2, 2001
6266938 Steel floor structure Jul. 31, 2001
6260327 Structural member of a truss Jul. 17, 2001
6240687 Frame construction for modular office furniture Jun. 5, 2001
6205736 Structural frame element Mar. 27, 2001
6176060 Manufacture of trusses Jan. 23, 2001
6145268 Apparatus and method for providing a reinforced roof truss Nov. 14, 2000
6082068 Method and apparatus for assembling a lightweight stackable truss Jul. 4, 2000
6067767 Connecting element for multiple-sided, in particular three-sided lattice girders May. 30, 2000
6061989 Modular structural components May. 16, 2000
6026626 Truss Feb. 22, 2000
6023902 Frame structure and method of construction by using the same Feb. 15, 2000
5930972 Frame piece for a switchgear cabinet Aug. 3, 1999
5761873 Web, beam and frame system for a building structure Jun. 9, 1998
5727272 Composite structure, especially bridge Mar. 17, 1998
5715642 Steel-frame system and member Feb. 10, 1998
5664388 Structural shear resisting member and method employed therein Sep. 9, 1997
5651635 Concrete barrier with reinforcement Jul. 29, 1997

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