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Class Information
Number: 405/254
Name: Hydraulic and earth engineering > Foundation > Columnar structure (e.g., pier, pile) > With driving or cutting tip > Longitudinally ribbed
Description: Method or apparatus wherein the elongated member or driving tip is provided with a protruding ridge along its length or a portion thereof.

Patents under this class:

Patent Number Title Of Patent Date Issued
7556454 Irregularly surfaced H pile Jul. 7, 2009
7494299 Piling apparatus having rotary drive Feb. 24, 2009
7114886 Structural helical pile Oct. 3, 2006
7018139 Structural helical pile Mar. 28, 2006
6382879 Pile and method thereof May. 7, 2002
6264403 Pile and method of driving a pile Jul. 24, 2001
5797704 Pier foundation and method of installation Aug. 25, 1998
5295767 Stabilizer for an in situ column drilling apparatus Mar. 22, 1994
4986373 Post hole digger Jan. 22, 1991
4911581 Pre-cast concrete pile and method and apparatus for its introduction into the ground Mar. 27, 1990
4657441 Penetration conductor pipe drive shoe Apr. 14, 1987

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