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Class 37/350 - Having screw digger


Subclass of Class 37 - Excavating
Definition: Apparatus including a trenching tool of the auger type with
No. of patents: 20
Last issue date: 07/07/2009


NumberTitleIssue Date
7555854Earth auger head and excavation method
It is an object of the present invention to provide a more efficient and economically superior earth auger head in which a percussive excavation mechanism part (down-the-hole hammer) is incorporated in order to break up portions that are unsuitable for rotary excava...
07/07/2009
7311011Apparatuses for interaction with a subterranean formation, and methods of use thereof
An access casing assembly structured for placement at least partially within a subterranean formation by forcing the access casing assembly thereinto, comprising a plurality of casing sections operably coupled to form a central elongated cavity for providing access ...
12/25/2007
6997633Coupling for split-boom power tool
A power tool coupling system for coupling two boom members of a split-boom power tool. The coupling system includes a first section and a second section. The first section is adapted to be fixedly attached to an end of a first one of the boom members. The first sect...
02/14/2006
6948265Excavation apparatus
An excavating apparatus having a prime mover with a longitudinal centerline and a main frame with an engine, a ground drive system and an excavation boom operatively attached thereto wherein the excavation boom has a first end and a second end. The first end of the ...
09/27/2005
6813850Continuous ditch excavator
A continuous ditch excavator includes an excavating auger rotatably mounted on a chassis in a centrally-disposed excavation work area defined by forward and rear portions. Two driving elements are rotatably-mounted in laterally spaced-apart relation to each other on...
11/09/2004
6571492Continuous ditch excavator
A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive elements carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground sur...
06/03/2003
6318005Dredge with improved auger shroud
A dredge supporting a pivotal ladder with a suction auger on its free end. A shroud assembly including front, center and rear sections surrounds a large portion of the periphery of the auger. The shroud assembly is pivotal about the axis of the auger and ...
11/20/2001
6305879Continuous ditch excavator
A continuous ditch excavator including a chassis having a forward portion and a rear portion, first and second motive devices carried by the chassis in laterally spaced-apart relation to each other for cooperatively driving the chassis along a ground surf...
10/23/2001
6151810Connecting device of soil removing member for excavator
A connecting device of a soil removing member for an excavator is used for connecting two soil removing members, wherein a helical ejecting blade is attached on an outer periphery of a rotational shaft. The rotational shaft in one soil removing member is ...
11/28/2000
5737859Earth leveling apparatus
An earth leveling apparatus includes a vehicle having runners for movement in an operative direction, an elongated screw mounted to the vehicle and rotatable on its axis, and extending transversely of the operative direction of movement of the vehicle, an...
04/14/1998
5224797Apparatus for laying porous irrigation pipe, cable, conduit, and the like
A rotatable apparatus for placing lengths of flexible pipe and cable a distance beneath the surface of the ground leaving the soil substantially intact. The pipe laying apparatus includes a shaft having an exterior, a plurality of cutting bits removably m...
07/06/1993
5199195Articulated toothed excavating apparatus
An excavating device for scraping away the high shoulder material on the road sides. The device includes a rotating drum on which are permanently attached tooth-supports arranged in a helix. On the supports are fastened spikes and teeth, different types f...
04/06/1993
5050320Multi-shaft kneading auger system
The present invention relates to a multi-shaft kneading auger system having a plurality of kneading shafts or rotating shafts used to form a continuous wall in the ground. Grouting blades driven by chains, are positioned near the lower ends of the kneadin...
09/24/1991
5033214Trenching attachment mounting system
A system for removably mounting a trenching attachment to hook and eye mounts on an end of a power unit. The trenching attachment includes a mounting frame having hook-engaging shafts and eye-engaging pins, a head drive assembly, a trenching boom assembly...
07/23/1991
5007770Method and apparatus for constructing a subsurface retaining wall
One or more rotating augers with drilling heads are aligned within a rectilinear casing with a rectilinear cutting head defining one of a plurality of adjacent vertical slots that may be excavated to within about one inch of an adjacent structure or prope...
04/16/1991
4819348Ditch forming machine
The present invention relates to a ditch forming machine and is specifically concerned with providing such a machine for forming the oppositely sloping sides of a ditch in a single pass. Prior art machines could only form one side of the ditch at a time w...
04/11/1989
4742627Digging boom assembly
A digging boom assembly including a first section which is attached to a trencher and a second section that may be disconnected from the first section and replaced with another identically configured section of longer or shorter length. The boom assembly ...
05/10/1988
4472089Channel construction machinery having a levelling and material lining application attachment
Channel construction machinery is provided with a levelling and material lining application attachment to thus provide a continuous mode of channel construction operation in either the longitudinal or transverse direction of operation with respect to the ...
09/18/1984
4162102Method and device for loosening stony soil
A method for loosening stony soil by means of a rotating cutting head fastened to the rear of a tractor and having cutting members to be drawn through the soil and being mounted according to a helical line. Stony soil can be readily loosened to the desired dep...
07/24/1979
4057117Auger spoil disposal box
An auger drilling apparatus includes a spoil disposal box guided on the lower end of the auger leads. The auger extends vertically through the box and deposits spoil from the hole being drilled into the box. During drilling, the box rests on the ground at...
11/08/1977
 
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