Eugene L Mathews

US Patent:

53756649, Dec 27, 1994

Filed:

Jun 15, 1993

Appl. No.:

8/078438

Inventors:

Michael M. McDowell - Bellevue WA
Eugene A. Mathews - Woodinville WA

International Classification:

E02D 706

US Classification:

173 1

Abstract:

A hydraulic pile driver (9) including a backhoe (10), a lead (30), a vibratory hydraulic hammer (38), and a winch (46), for driving pin pile or needle pile (44) into the ground. The lead (30) is limited in height, as is the backhoe (10) in size, so that the pile driver (9) can be used within the interiors of many building structures. The vibratory hydraulic hammer (38) operates at a rate greater than 400 blows per minute and generates a force greater than 100 foot-pounds.