Resources Contact Us Home
Shear bolt connected structural units

Image Number 6 for United States Patent #5537794.

An apparatus is disclosed for joining structural units. A structural unit, such as a precast concrete section of pipe, decking, bridge structure, building structure, or pavement, includes a plurality of spaced, longitudinally aligned tubular members. The ends of each structural unit are flush, and the ends of the tubular members are flush with the ends of the structural units. When two of such units are to be joined together, a guide member is inserted in one end of each of the first tubular members in the first structural unit, while an internally threaded insert member is inserted into a corresponding end of each tubular member in the second structural unit. The guide members and insert members have axial apertures with the aperture in the insert member being internally threaded. The two structural units are brought together so that each guide member on the first structural unit enters into the corresponding end of the tubular members containing the inserts in the second structural unit. A bolt is passed through each guide member and is threaded into the internally threaded aperture in the insert member. The bolts are tightened to join the two structural units together. A resilient gasket is cast into one end of a structural unit when it is formed or it is inserted into a groove which is formed in a face of a structural unit at the time the structural unit is formed. The resilient gasket is compressed between the surfaces of the two concrete sections thus forming a face seal at the joint therebetween. A method of assembling the structural units, and also a method of installing the structural units by jacking, are also disclosed.

  Recently Added Patents
Optical power measurement method, optical line terminal and optical network unit
Movable assemblies for an image reader unit and a cover unit in an image formation apparatus
Automatic population of feature capabilities on a communication device
Information processing apparatus, information processing method, and program
Display screen of a mobile terminal or portion thereof with a graphical user interface
Mobile target system
Method for detecting motion of an electrical device or apparatus
  Randomly Featured Patents
Low installation/removal force wear sleeve and method of use
Methyl methacrylate compositions
Respiratory nasal filter
Simultaneous plural code series generator and CDMA radio receiver using same
Methods for preparing fuel compositions from renewable sources, and related systems
Hydrostatic transaxle
Children's slide
Shock absorption in archery sights
Jewelry with adhesive insert for lifting objects
System for reflecting an image into a microscope