Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Prefabricated unit construction modular bridging system










Image Number 5 for United States Patent #4912795.

A prefabricated modular unit construction bridging system in which all components are identical and interchangeable to meet any variation of span, width of roadway, number of lanes of traffic, and live load specification for any temporary, semi-permanent, or permanent bridge. The bridge is capable of being dismantled and the individual modular components used elsewhere to form a new bridge. The panels, when connected end-to-end to form the main load-bearing trusses of the bridge side girders, are of such a shape that they can be pinned together at their bottom chord level to support the standard cross-beams and modular deck units/bracing throughout the bridge and provide gaps between adjacent panels at their top chord level into which can be pinned other standard chord units of such a length calculated to eliminate entirely both the natural pin-hole deflection inherent in 2-pinned modular truss structures and the elastic deflection under dead load. Some or all of the elastic deflection due to live load may also be eliminated. Also, the same shaped basic panels can be up-turned to form a second story of panels in double story truss constructions. The bottom chords of the up-turned panels form the top chord of each truss of the side girders, and the bottom chord of the lower panels form the bottom chord of each truss of the side girders.








 
 
  Recently Added Patents
Plants and seeds of corn variety CV294874
Method and apparatus for efficiently inserting fills in an integrated circuit layout
Electronic devices with voice command and contextual data processing capabilities
Leg stretching device
Change management automation tool
Programming of DIMM termination resistance values
Control device for radiation imaging apparatus and control method therefor
  Randomly Featured Patents
Pressure sensitive sensor and method of treating terminal of pressure sensitive sensor
Golf putter head
Exercising apparatus
Disposable hypodermic syringe
Injection mold apparatus for containers of plastics material
Wire holder
Exterior of vehicle tailgate
Substituted 2-(anilinomethyl)-2-imidazoline derivatives, compositions containing these derivatives, and the use thereof for combating pests
Voter information system
Method of forming an article including reinforcing elements encapsulated in thermoplastic material