...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 7389620 | Composite pan for composite beam-joist construction Composite pan end connections for composite beam-joist construction are disclosed. Two versions of the composite pan can be fabricated on a standard break machine. A third version disclosed makes use of a standard steel stud. All three versions provide an economical... | 06/24/2008 |
| 7272914 | Steel joist A joist suitable for use in a composite concrete floor is disclosed. The joist comprises a top chord, a bottom chord; and a vertically extending intermediate web having a top end secured to the top chord and a bottom end secured to the bottom chord. The top chord co... | 09/25/2007 |
| 7143555 | Hybrid precast concrete and metal deck floor panel In one implementation of the present invention, corrugated metal deck panels are attached to concrete structural beams to form a precast panel. ... | 12/05/2006 |
| 7093401 | Light gauge metal truss system and method A truss system wherein the structural components and fixtures are formed from light gauge metal. The trusses are fabricated from roll formed truss chord members and truss web members. The truss chord members are roll formed to have a generally U-shaped cross-section... | 08/22/2006 |
| 7017314 | Apparatus and method for composite concrete and steel floor construction A composite floor system comprises a system of joists, where each of the joists has a top chord, a bottom chord and a web, including tension and compression members in the space between the top chord and the bottom chord and secured to the top and bottom chords, and... | 03/28/2006 |
| 7010890 | Precast, prestressed concrete truss A precast, prestressed concrete truss which spans between exterior columns and forms an interior or exterior load bearing wall of a building. The truss includes top and bottom chords interconnected by at least one web member. Prestressed reinforcing members in the t... | 03/14/2006 |
| 6973756 | Connector and system for supporting veneer panels A connector is provided for coupling a veneer panel to a back-up wall. The connector includes a veneer connector and a support member. The veneer connector is adapted to support a generally horizontal edge of the veneer panel. The support member includes a mounting ... | 12/13/2005 |
| 6755001 | Suspended concrete flooring system and method A suspended concrete flooring system (100) comprising a plurality of spaced-apart load-bearing members (110) or supporting walls that support a plurality of joists (122) having opposing sides and arranged substantially at right-angles to the loa... | 06/29/2004 |
| 6708459 | Sheet metal stud and composite construction panel and method A composite construction panel having a thin panel of concrete material and a reinforcing grid of sheet metal studs with embedment portions which are actually embedded into the concrete panel, each of the studs having a web, main web openings through the web, a righ... | 03/23/2004 |
| 6698148 | Demountable modular floor for watertight raised decks A demountable modular floor for watertight raised decks consisting of a plurality of modularly assemblable composite slabs made of steel sheet and concrete, provided with a drainage system for collecting and conveying the rainwater between the slabs, wher... | 03/02/2004 |
| 6691470 | Concrete building module roof form with I-beam and support apparatus A composite roof form includes first, second and third upright building walls laterally connected to define an interior building space, wall upper end segments of the at least a first upright building wall, a second upright building wall and a third uprig... | 02/17/2004 |
| 6598357 | Concrete building module roof form and support apparatus A composite roof form includes first, second and third upright building walls laterally connected to define an interior building space, wall upper end segments of the at least a first upright building wall, a second upright building wall and a third uprig... | 07/29/2003 |
| 6581346 | Metal fastener for bonding concrete to floors Thin metal anchoring plates provide mechanical bonding between flooring materials such as concrete and plywood. Teeth punched from the metal plates and bent at right angles on the topside form anchorage for the concrete slab and metal screws anchor the me... | 06/24/2003 |
| 6543195 | Composite structural framing system The structural framing system comprises a steel beam that supports flooring components interconnected through the addition of a solidifying material such as poured concrete. A structural framing system is created by anchoring steel beams to vertical colum... | 04/08/2003 |
| 6449914 | Grout sealing apparatus for concrete panels, decks, and support beams and methods for their fabrication Resilient and flexible grout seal strips for sealing off a space formed between the bottom of a concrete panel and a support beam on which the panels are supported, concrete panels, decks, and support beams having resilient and flexible grout seals and me... | 09/17/2002 |
| 6434903 | Section fixable to an anchoring base A section fixable in a mounted position to an anchoring base by means of fastening screws has at least one fastening segment extending in the mounted position substantially parallel to the anchoring base. The fastening segment is, for example, a fastening... | 08/20/2002 |
| 6279281 | Concrete forming system Disclosed is a concrete forming system for constructing an upper wall for a bridge or a building, including: a plurality of beams, each having a flange; a plurality of steel bars arranged between the two opposing beams; a plurality of slabs on the steel b... | 08/28/2001 |
| 6128878 | Portable storage building with concrete floor and method of assembling and moving same A concrete floor of a portable storage building is made for one or more storage units with each unit including a floor made through use of a single pair of mold sections or a plurality of pairs of mold sections interconnected for multiple storage units. E... | 10/10/2000 |
| 6115979 | Grout sealing apparatus for concrete panels, decks, and support beams and methods for their manufacture Resilient grout seal strips for sealing off a space formed between the bottom of a concrete panel and a support beam on which the panels are supported, concrete panels, decks, and support beams having resilient grout seals and methods for fabricating such... | 09/12/2000 |
| 6112482 | Floor and ceiling structures A composite floor or ceiling structure which comprises a profiled steel deck supported by a plurality of I-section steel beams each having an upstanding web bordered by upper and lower flange plates and covered in situ with concrete. The deck comprises a ... | 09/05/2000 |
| 6098359 | Method of constructing a suspended floor A method of constructing a suspended floor is described in which a plurality of beam-forming formwork assemblies are located in substantially parallel alignment, the beam-forming formwork assemblies are supported in support assemblies on a support base in... | 08/08/2000 |
| 6006483 | Deck panel for reinforced concrete slabs A deck panel for reinforced concrete slabs is disclosed. The deck panel is formed by integrating a plurality of deck girders with a deck plate into a single structure. In each of the deck girders, a single lattice member is welded to upper and lower steel... | 12/28/1999 |
| 5809722 | Girder supported reinforced concrete slab building structures with shearing connectors, and methods of constructing the building structures and connectors Reinforced concrete slab and girder building structures incorporate shearing connectors with lengthwise support parts to which lengthwisely spaced, transversely extending, rigid load transfer plates affix. A girder structure having one or more lengthwisel... | 09/22/1998 |
| 5664378 | Exodermic deck system An exodermic deck for structural floors including bridge floors, road beds, pedestrian walkways, or the like, comprises a composite structure of a grid component and a top component. The grid component is preferably made of steel and includes a plurality ... | 09/09/1997 |
| 5598676 | Hearth form for pour-forming a fireplace hearth A hearth form is utilized for pour-forming a fireplace hearth in the absence of eventual removal thereof from an opening established by floor joists and a conventional concrete masonry unit. The hearth form is preferably constructed from two relatively sl... | 02/04/1997 |
| 5561957 | Composite wood-concrete building member Building or construction members are provided which include wooden girders or beams which form a framework onto which is molded a concrete plate or slab. A connection is formed between the beams and the concrete slab at least one sheet metal strip (4) hav... | 10/08/1996 |
| 5544464 | Composite steel and concrete floor system An improved steel and concrete floor system in which a corrugated steel deck is supported on shelves fixed to the sides of parallel spaced joists. Each joist has a top chord forming a shear connector to cause composite action to occur between the joist an... | 08/13/1996 |
| 5507126 | Corrugated metal plate A corrugated metal plate comprises a metal plate provided at two opposite sides thereof with an insertion cap and an insertion seat. Two or more corrugated metal plates are joined together side by side by fastening the insertion cap of one corrugated meta... | 04/16/1996 |
| 5414972 | Reinforced structural member for building constructions A reinforced structural member for connection to a building panel, such as a pre-fabricated building panel used to construct walls, floors and roofs of a building. The reinforced structural member is a two-piece assembly comprising a structural member and... | 05/16/1995 |
| 5050358 | Structural members and building frames Structural members for building structures comprise indented, truncated, V-shaped profiles which include flanges extending horizontally from the open tops thereof. Structural beam members comprise open-ended, elongated members, while structural column mem... | 09/24/1991 |
| 4809474 | Prestressed composite floor slab and method of making the same A method of making a prestressed floor slab unit and floor system is disclosed involving the steps of creating a slab unit by imposing a first concrete slab over the central longitudinal portion of a corrugated cold formed steel deck sheet of generally re... | 03/07/1989 |
| 4653237 | Composite steel and concrete truss floor construction A steel and concrete secondary truss type framing member, steel deck concrete floor construction in which the top chord of the truss is formed in the shape of a modified "I" section having an upper flange, web and lower flange with a generally flat upper ... | 03/31/1987 |
| 4228624 | Heat-sound insulating wall The wall comprises a closed acoustic box-structure which is defined by a slightly ribbed sheet and a flat sheet. The box-structure has lateral ribs which extend beyond the sheet. A panel of high-density mineral wool which is of small thickness is enclosed... | 10/21/1980 |
| 4151694 | Floor system The system is preferably for use in building construction where concrete floors can be poured in place. The components of the system comprise parallel arranged joists preferably each constructed from three pieces to form an I-beam joist, bracing channels ... | 05/01/1979 |
| 4129917 | Bridge structure A bridge which has a bridge deck constructed of corrugated checkered metal plate and which is supported by a plurality of side-by-side box beams carried by spaced apart beam supports. The box beams have upright sides which are connected to upper and lower... | 12/19/1978 |
| 4056908 | Composite concrete slab and steel joist construction A composite action open-web steel joist, supporting beams and girders, and reinforced concrete slab interconnection. Upper apex portions of the steel joist webbing protrude through the upper chord members of the joist, and through apertures provided in th... | 11/08/1977 |
| 3956864 | Composite structural assembly In order to provide, in a composite structural assembly comprising a plurality of metallic support members disposed in side-by-side relationship and a layer of cementitious material disposed on the plurality of support members, for the securement of the s... | 05/18/1976 |