A vibratory plow has a lift bracket. The lift bracket couples to an upper link by an upper spring having an upper energy absorptive member. The upper spring and upper energy absorptive member are configured to limit upper link movement relative to the lift bracket in a first direction. The lift bracket is coupled to the upper link by a lower spring having a lower energy absorptive member; the lower spring and lower energy absorptive member are configured to limit upper link movement relative to the lift bracket in a direction opposite the first direction. The upper link is coupled to a shaker box which is attached to a plow blade. The shaker box is configured to travel from a baseline position a first distance greater than two inches in the first direction before the upper spring compresses enough that the upper energy absorptive member dampens shaker box movement.

A system for laying an underwater pipeline on a bed of a body of water has a construction site to form a string of an underwater pipeline, the string being defined by a curved portion shaped substantially like a portion of the bed of the body of water characterized by an abrupt change in slope; at least two vessels to transfer, in the body of water, the string from the construction site to a laying site in the body of water and substantially on the vertical of a path along which to lay the string; and a plurality of floating devices configured to be coupled to the string and so as to selectively support and sink the string in the body of water, and progressively lay the string along the path on the bed of the body of water.

A system for laying an underwater pipeline on a bed of a body of water has a construction site to form a string of an underwater pipeline, the string being defined by a curved portion shaped substantially like a portion of the bed of the body of water characterized by an abrupt change in slope; at least two vessels to transfer, in the body of water, the string from the construction site to a laying site in the body of water and substantially on the vertical of a path along which to lay the string; and a plurality of floating devices configured to be coupled to the string and so as to selectively support and sink the string in the body of water, and progressively lay the string along the path on the bed of the body of water.

A pneumatic wheel attachment for an excavator boom that provides an efficient means for trench compaction. The pneumatic wheel attachment includes a pneumatic compaction wheel, a wheel yoke, and a boom mounting assembly. The pneumatic compaction wheel is a large tire with a large foot print. The wheel yoke holds and supports the pneumatic compaction wheel and includes a first leg, a second leg, and a connecting plate. The first leg and the second leg are positioned opposite to each other. The first leg is connected perpendicular to the connecting plate while the second leg is mounted perpendicular to the connecting plate. The pneumatic compaction wheel is rotatably mounted in between the first leg and the second leg with a rotation axis being oriented perpendicular to the first leg. The boom mounting assembly is adjacently connected to the connecting plate, opposite the first leg and the second leg.

The present invention relates to a ground sawing machine comprising a frame supported by rear wheels (34a, 34b) and front wheels (36a, 36b) arranged for moving the ground sawing machine over a surface (38). At least one motor (40, 6) and a saw blade (2) are mounted to the frame, at least one motor (40) being arranged to propel the saw blade (2) to cut against the surface (38). The pointing direction (80) relative the surface (38) of the rear wheels (34a, 34b) and/or the front wheels (36a, 36b) is adjustable by means of an electrically controlled actuator (56) which is controlled by means of control means (70, 71, 72) arranged to provide at least three different control signals, one for left turn, one for right turn and one for center. The control signal for left turn and right turn are arranged for adjusting the pointing direction (80) of the adjustable wheels (34a, 34b) correspondingly, and the control signal for center is arranged for adjusting the pointing direction (80) of the adjustable wheels (34a, 34b) to a predetermined value.

A vehicle having a long track or wheel-trail wheel combination on one side and a smaller ground engaging member, such as a short track or wheel on the other. The vehicle has a work attachment on one end of its frame, which is provided clearance on the side of the vehicle with the short track or wheel. A control system is provided to allow an operator to properly control a direction of the vehicle despite the fact that different forces may be required to operate the long track and the short track or wheel.

The invention provides a boring machine (10) for making a trench (T) in soil (S), the machine comprising a frame (12) that extends along a longitudinal direction (A), said frame (12) carrying a boring device (20) provided with four rotary boring members driven by four motors about axes of rotation that are stationary relative to one another.

A vehicle-attached, task-associated excavation implement with interchangeable rotational excavation apparatuses is conceptualized in this application. The implement is similar to McGee's Tractor-Mounted Excavation Implement, but is conceptualized in a new way of combing parts or portions of the implement with vehicles currently existing in the prior art, without the need for a tractor equipped with power-take-off. This vehicle-attached implement can be supported by a variety of motorized vehicles, utilizing a variety of apparatus-powering options. An assortment of steering options could be used, and movements of the apparatuses, either with or separate from the implement, provide diverse functionality. Tasks supported by the rotational excavating apparatuses include Foundation footings, trenches, rounded ditches, shallow V-shaped ditches, landscape or garden beds, and shallow graded depressions for sidewalks or simple slabs. Excavating apparatuses have claws or cutting elements attached to surface at angles to propel soil directionally.

A vehicle-attached, task-associated excavation implement with interchangeable rotational excavation apparatuses is conceptualized in this application. The implement is similar to McGee's Tractor-Mounted Excavation Implement, but is conceptualized in a new way of combing parts or portions of the implement with vehicles currently existing in the prior art, without the need for a tractor equipped with power-take-off. This vehicle-attached implement can be supported by a variety of motorized vehicles, utilizing a variety of apparatus-powering options. An assortment of steering options could be used, and movements of the apparatuses, either with or separate from the implement, provide diverse functionality. Tasks supported by the rotational excavating apparatuses include Foundation footings, trenches, rounded ditches, shallow V-shaped ditches, landscape or garden beds, and shallow graded depressions for sidewalks or simple slabs. Excavating apparatuses have claws or cutting elements attached to surface at angles to propel soil directionally.

The display system for remote control of a working machine includes a plurality of camera units and an image processing device, both provided on or in a working machine, and a display device and a remote control device, both provided in the remote control side. The display device detects movement of the head of an operator and transmits the detected movement of the head of the operator to the remote control device. The remote control device transmits, to the image processing device over wireless communications, the movement of the head of the operator transmitted from the display device. The image processing device adjusts, for transmission to the display device, parts of left-eye and right-eye panoramic images according to the movement of the head of the operator transmitted from the remote control device.