Did You Know...
...that the Slinky toy was the result of a failed attempt by engineer Richard James to produce an antivibration device for ship instruments? His goal was to develop a spring that would instantaneously counterbalance the wave motion that rocks a ship at sea. Instead, he developed the Slinky.
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| Number | Title | Issue Date |
| 7207756 | Seat mounting rail, particularly for a commercial aircraft A seat mounting rail suitable for mounting passenger seats to a floor, for example an aircraft cabin floor, is divided into an upper section for securing a seat and a lower section for mounting the rail to the floor. The upper section is preferably made of a titaniu... | 04/24/2007 |
| 7197854 | Prestressed or post-tension composite structural system A prestressed or post-tensioned composite structural system for bridge floors, road beds, pedestrian walkways, building floors, building walls, or similar structural elements. The structural system comprises a composite structure comprising an unfilled grating as a ... | 04/03/2007 |
| 7100885 | Seat mounting rail, particularly for a commercial aircraft A seat mounting rail for securing seats to a floor of a passenger aircraft is made of a seat securing upper section and a rail mounting lower section. Both sections are made of different metals. The upper section is made of a titanium alloy for corrosion protection.... | 09/05/2006 |
| 6993881 | Joist assembly and chord for use in such joist assembly A joist assembly having a top chord with a slot formed therein, a bottom chord with a slot formed therein, and a tubular member of serpentine configuration having an upper portion received within the slot of the top chord and a lower portion received within the slot... | 02/07/2006 |
| 6871462 | Composite action system and method The present invention provides a composite action system and a method for fabricating the same to meet OSHA safety requirements and allow for welding off the work site. An improved structural system achieves the desired composite behavior by providing one or more st... | 03/29/2005 |
| 6568139 | Bridge structure with concrete deck having precast slab A precast concrete slab for forming a deck in a bridge superstructure has a chamfer on forward and trailing edges so that adjacent slabs can mate. The slab is reinforced with bars which protrude laterally from the slab on opposite sides and which, in use,... | 05/27/2003 |
| 5941035 | Steel joist and concrete floor system A concrete floor system includes the use of sheet metal pan or decking and sheet metal z-shaped closures sitting upon low profile open web steel joist providing a non-structural or structural concrete brake above the walls forming vibration damping and so... | 08/24/1999 |
| 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 |
| 5513474 | Double-walled formwork element and process for manufacturing it Proposed is a double-walled formwork element comprising two large-area panels suitable for use as mould shuttering, particularly in the concrete construction industry. The two panels are joined to each other by force-locking, liquid-tight and gas-tight en... | 05/07/1996 |
| 5177918 | Wall structure A shock-absorption wall structure comprising a framework of elastic beams having a light steel frame covered with a certain number of base plates is disclosed. The base plates have at least two or more rows of parallel sheets in the upper/lower sides or l... | 01/12/1993 |
| 5113631 | Structural system for supporting a building utilizing light weight steel framing for walls and hollow core concrete slabs for floors and method of making same A structural support system for a building is formed from preferably prefabricated, light weight steel framed, bearing wall panels and precast, hollow core concrete floor slabs that are positively interlocked by, for example, splice plates, provided at th... | 05/19/1992 |
| 4715155 | Keyable composite joist The present invention provides apparatus for composite slab construction, comprising an open web of zig-zag structure upper and lower knuckles and at least one chord united to the web to form a joist. The chord will include an upper chord comprising a sea... | 12/29/1987 |
| 4628654 | Composite floor structures A composite floor structure comprising a floor slab of concrete or other compression resistant material; and at least one reinforced beam under the floor slab. The beam comprises permanent shuttering including an open-mouthed, upwardly facing channel form... | 12/16/1986 |
| 4468907 | Device for protecting steel reinforcements for concrete as well as a method and device for producing them A protective device (12) for steel reinforcements (16) includes a bottom box (22) and a cover (24) which can be inserted into it. In the bottom (26) of the bottom box there are slots (32) through which parts (18) of the steel reinforcements (16) which pro... | 09/04/1984 |
| 4213281 | Construction of roofs, floors and beams The present invention relates to improvements in the construction of roofs, floors, and more specifically, to a structure permitting the pouring of reinforced concrete without the need of other frames or centering. This becomes possible by using a beam wi... | 07/22/1980 |
| 3965641 | Sheet metal structural shape and use in insulated decking structure and method A sheet metal structural shape for use as a purlin or sub-purlin in deck construction which is symmetrical about a vertical bisecting plane having a central vertical web, two legs projecting downwardly from the bottom of said web at an angle of about 45°... | 06/29/1976 |
