Drilling apparatus for hard ground

Details Drilling apparatus for hard ground Drilling apparatus for hard ground

2005-01-11

2005-01-11

Will, Thomas B. (Department: 3671)

Excavating

Rotary digger

C037S094000, C175S098000, C175S099000, C299S059000

Reexamination Certificate

active

06839988

ABSTRACT:
An apparatus for drilling trenches in the ground comprising a main frame having two vertical main faces, a drilling assembly comprising a support disposed at the bottom of said frame, means for causing said drilling assembly to move in vertical translation relative to said main frame by applying a predetermined force to said drilling assembly relative to said main frame, and anchoring means mounted on said main faces for anchoring the main frame to the walls of said trench. The anchoring means comprise a plurality of deformable elements secured to said main faces of the top frame, means for injecting a fluid under pressure into said inflatable elements thereby applying a force between said main frame and the walls of the trench, and means enabling said fluid under pressure to escape from said inflatable elements whereby no force is transmitted between said main frame and the walls of the trench.

REFERENCES:
patent: 2637527 (1953-05-01), Andrews, Jr.
patent: 3357506 (1967-12-01), de Bosredon
patent: 3443648 (1969-05-01), Howard
patent: 3710878 (1973-01-01), Endo et al.
patent: 3773121 (1973-11-01), Ikeda
patent: 3894587 (1975-07-01), Sourice
patent: 4202416 (1980-05-01), Blaschke et al.
patent: 4314615 (1982-02-01), Sodder et al.
patent: 4373278 (1983-02-01), Myrick
patent: 4694915 (1987-09-01), Bauer et al.
patent: 4742876 (1988-05-01), Barthelemy et al.
patent: 4744425 (1988-05-01), Hentschel
patent: 4824176 (1989-04-01), Barre
patent: 5056242 (1991-10-01), Miotti
patent: 5836089 (1998-11-01), Lipsker
patent: 6443227 (2002-09-01), Hocking et al.
patent: 6446364 (2002-09-01), Herrero Codina
patent: 61270773 (1988-05-01), None
patent: 01207566 (1991-03-01), None
patent: 04285371 (1994-04-01), None
patent: 1007263 (1999-04-01), None

Affiliated with

Also associated with

Rating

Drilling apparatus for hard ground does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Drilling apparatus for hard ground, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drilling apparatus for hard ground will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3405891