Hydraulic propulsion unit

Hydraulic and earth engineering – Earth treatment or control – Shoring – bracing – or cave-in prevention

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

37189, 405282, E21D 700

Patent

active

042795486

ABSTRACT:
An apparatus and a method for excavating and pile reinforcing trenches which requires the removal of, and access to, no more top soil than is defined by the actual dimensions of the ditch. A box-like central structure serves as a frame within which excavation by customary means, e.g., externally positioned hoes, takes place. The outside walls of said central structure form temporary trench walls supporting the surrounding dirt. The inside walls of said central structure form a rear section, narrower in width than the front section and set off therefrom in a step-like fashion, behind which flat piling is driven in before the entire unit advances. Advancement is carried out by means of lateral anchoring base and a longitudinal propulsion mechanism both riding on a trolley structure extending from the rear of the box frame and alternatively expanding and contracting periodically. In addition, vertical shafts with cutting teeth are disposed within the front edges of the box frame walls to facilitate tunneling forward during the propulsion cycle.

REFERENCES:
patent: 1149937 (1915-08-01), Murphy
patent: 3214919 (1965-11-01), Kusatake
patent: 3461579 (1969-08-01), Turner
patent: 3473243 (1969-10-01), Turner
patent: 3593528 (1971-07-01), Pavese
patent: 3608319 (1971-09-01), Quitadamo
patent: 3750409 (1973-08-01), Orfei
patent: 3820345 (1974-06-01), Brecht
patent: 3916629 (1975-11-01), Thompson
patent: 3967463 (1976-07-01), Grandori
patent: 4060992 (1977-12-01), Heitkamp et al.
patent: 4094152 (1978-06-01), Jutte

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Hydraulic propulsion unit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Hydraulic propulsion unit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic propulsion unit will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2432721

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.