Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Apparatus for providing a support column










Image Number 15 for United States Patent #8043028.

A primary earth penetrating mandrel formed of a hollow shell steel plate octagonal in cross-section has an upper end and a blunt lower end joined by an upwardly and outwardly tapered wall. The mandrel is driven downwardly in the earth to simultaneously form a vertical tapered cavity while compacting the sidewall of the cavity to provide structural integrity. The mandrel is then moved upwardly from the bottom of the cavity and aggregate is deposited in the bottom of the cavity following which the mandrel is lowered so that its blunt lower end engages the deposited aggregate and densifies the aggregate by vertical vibratory action and static force with these steps being repeated until the pier top is near the surface of the earth at which time the upper aggregate portions are densified by either the primary mandrel or a secondary mandrel having a substantially larger lower end surface than the lower end surface of the primary mandrel. A second embodiment includes a conduit in the primary mandrel for injecting concrete or grout into aggregate previously deposited in the cavity.








 
 
  Recently Added Patents
Method of sending CTI messages in a communication system
Distributed IP-PBX signal processing
Method and system of a sensor interface having dynamic automatic gain control
Evaluating programmer efficiency in maintaining software systems
System and method for browsing tabbed-heterogeneous windows
Enhancement of semiconducting photovoltaic absorbers by the addition of alkali salts through solution coating techniques
Method and system for constructing a customized web analytics application
  Randomly Featured Patents
Rim for a sink
Recording-medium recording and reproducing device
Integrated circuit internal heating system and method therefor
Computer apparatus and methods supporting different categories of users
Plate or similar article
Table with adjustable foot
Brake for rollable receiving elements utilized particularly in airplanes
Ink jet printing apparatus
Viscoelastic polymer bank with improved mobility control
Crosstalk-resistant multi-input to single output analog switching device