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7537417 |
Corner connection for temporary shoring
A connection arrangement for temporary shoring in an excavation site is used to secure I-beams together at corners within the excavation site. Typically, four I-beams are connected together to form...
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7530767 |
Trench box safety ladder
Various embodiments of the present invention relate to trench box safety ladders and methods of constructing trench boxes with safety ladders. In one embodiment, a trench box comprises two side...
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7402003 |
Trench box moving apparatus and method
There is disclosed an apparatus and method for moving with an excavator arm a trench box having a pair of adjacent spreader bars at a forward end. The apparatus has a bracket end for connecting to...
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7258511 |
Shoring system
Improved shoring systems and methods are disclosed. In one embodiment, a shoring system includes first and second opposing side walls. A manifold is pivotally connected to the first side wall and...
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7140808 |
Catwalk device and method
A catwalk is provided for use in trenching operations that provides increased safety and improves efficiency. Methods are also provided that save time over the prior process of building multiple...
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7128500 |
Corner connection for temporary shoring
A connection arrangement for temporary shoring in an excavation site is used to secure I-beams together at corners within the excavation site. Typically, four I-beams are connected together to form...
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7021868 |
Lightweight shoring system for accommodating crossing utilities
An excavation shoring system having four vertical, cylindrical poles, each connected to a base element, arranged to constitute corners of a rectangle. At least one vertically oriented shoring panel...
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6907957 |
Trench shield ladder
A trench shield ladder that hangs on the wall of the trench shield to provide workmen safe access to a trench. The ladder is provided with a top platform and hand rails that extend over the...
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6554544 |
Method to build a water seal, creep-line increasing cutoff
A method for building a continuous water seal, creep line increasing cutoff includes the steps of forming spaced borings into the soil in the presence of slurry; developing narrow slots between the...
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6474911 |
Trench sheeting device
A trench sheeting device consists of trench sheeting boxes which are each made up of two trench plates supported against each other, the width of the trench apart, and at least one shaft sheeting...
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6443665 |
Trench shielding and shoring device
A portable shoring device for securing the sidewalls of an excavation having a pair of walls or panels mutually facing each other and being held in spaced apart relationship by at least one support...
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6267538 |
Beam joining cap for trench shield
An apparatus for joining at least two or more wales of a shoring system including a first substantially rigid end-cap adapted to enclose an end of a first horizontally disposed wale, the first...
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6224296 |
Sliding double panel type trench shoring system
A trench shoring system using panels as shoring walls to prevent possible collapse of natural ground walls of trenches in trenches such as for burying pipes underground, having a sliding panels...
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6164875 |
Trench shield directly ridable and movable on a constructing pipe
A trench shield includes a pair of shielding panels for protecting opposite side walls of a trench excavation, two side frames are provided for restively adjustably securing the two shielding...
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6164874 |
Sheeting device
A sheeting device includes a column with two supporting surfaces in one guide channel. The second supporting surface is provided with an offset relative to the first supporting surface. The offset...
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6155750 |
Trench shield having wheels simultaneously provided for protection and rolling purposes
A trench shield includes: a pair of shielding wheels rotatably mounted on a pair of retaining plates; a plurality of brace members passing through two retaining plates for retaining the two...
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5931608 |
Trench shoring transport device
An trench shoring transport device having a trench box depending from a frame, the frame including a pair of side frame subassemblies which are slideably and adjustably engaged to each other...
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5902075 |
Trench falsework system
Proposed is a trench falsework which includes a base box (3) made up of lining panels (5) held apart by braces (8). The panels making up the box have a flat edge (7) along the top and a cutting...
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5876153 |
Trench falsework panel
A lining plate intended for employment in connection with trench lining in below-grade construction becomes assembly- and removal-friendly and simultaneously resistant to flexural buckling even...
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5868526 |
Trench shield
A trench shield or manhole shield which has tapered side shields. The walls of each side shield are tapered. The outer walls are tapered inwardly from front to rear (in the case of the trench...
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5865567 |
Movable trench shoring device
An improved movable trench shoring device having a trench box depending from a frame, the frame including a pair of end frame members, a pair of side frame members and a pair of cross frame...
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5741091 |
Shoring device with load optional enhancing spreaders
A shoring device for supporting trench side walls during construction. The shoring device has opposite shoring shields having conventionally located spreaders adjacent the upper edge of the shields...
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5725330 |
Joining arrangement
Joining arrangements (7) capable of swivelling around an axis bolt (6) are limited in their swivelling by one of the springs of a pair of springs (12, 13) welded together into a unit to make it...
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5720580 |
Apparatus for and method of shoring a trench
An apparatus for and a method of shoring a trench. The apparatus includes two vertical posts which are adapted to be disposed at the borders of the trench in an opposite relation and a rigid frame...
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5669738 |
Modular trench box sheeting
Modular trench box sheeting panels for use in wall supporting during the excavation of trenches or the like. A rectangular support frame is formed by a pair of sheeting support members secured to...
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5527137 |
Knife structure for shoring assemblies used in excavations
An improvement for use with protective panels that buttress the walls of an excavation is in the form of a knife structure that is releasably connected to the bottom edge of a protective panel by...
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5503504 |
Sheeting device
A sheeting device having large-size sheeting panels (2,4) supported against vertical supports (1,3) which are arranged in pairs facing each other and are spaced-apart by at least one spreader frame...
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5336023 |
Self-propelled trench box
A self-propelled trench box includes a pair of side panel enclosures and respective drive tracks mounted within the enclosures. The drive tracks are powered by a compact hydraulic drive mechanism...
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5310290 |
Protective structure for excavations
A protective panel may be used alone or paired to form a protective structure to provide a protected space in an excavation by buttressing the upright walls of the excavation. The protective panel...
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5310289 |
Apparatus for sheeting deep trenches
An apparatus for sheeting a deep trench, including pairs of vertical support rails arranged along the trench so that the support rails of each pair of support rails are opposite each other at an...
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5306103 |
Wheeled carriage assembly for trench shields
A carriage assembly for suspending and supporting trench shields in an excavated trench has an axle member that spans the trench, a wheel assembly on each end of the axle member, a pair of bracket...
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5277522 |
Trench shield assembly
A trench shield has a pair of upright shields laterally spaced from each other with spreaders. Each shield has a frame supporting side walls and a horizontal earth penetrating blade. A pounding...
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5232313 |
Shoring guard
A finger guard for attachment to a shoring device made from a flexible material. The guard has a shield to protect the user's fingers and is held in place by a removable hinge pin which inserts...
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5193938 |
Method and apparatus for laying pipe
First and second frame assemblies (18, 20) are respectively provided with a pair of plate-like earth retainers (24, 36) and are alternately advanced by propulsion jacks (22). While the first and...
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5129763 |
Trench safety device
A rotatable cage for protecting a worker in a trench is disclosed. This cage is comprised of two walls which are substantially congruent with each other, at least three cross-members joining said...
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5123785 |
Trench-shoring appartus
A self-propelled trench-shoring apparatus having a modular panel construction whereby it may be readily adapted for use in lining trenches or open ground cuts of various depths and widths,...
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4993880 |
Trench-box panel
A trench-box panel (200, 202) comprises an array of horizontal elongate "C-section" members (210) one on top of another and welded together at w continuously along their lengths. The members (210)...
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4900197 |
Process for holding up the lateral walls of deep ditches
The invention relates to a process for propping or supporting the vertical support walls of deep ditches. After having freely constructed the ditch, to a depth compatible with the resistance of the...
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4874271 |
Self-propelled trench shoring machine
A main frame carries top and bottom shoring plates, with the top plates supported on pivoted brackets so that they can be tilted for leveling purposes. These brackets also can move transversely on...
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4850747 |
Trench box
A trench box wherein there are spaced, parallel side wall panels between which there are spacer panels and wherein the upper longitudinal edges of the side wall panels and spacer panels are...
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4842774 |
Pyramiding tumuli waste disposal site and method of construction thereof
An improved waste disposal site for the above-ground disposal of low-level nuclear waste as disclosed herein. The disposal site is formed from at least three individual waste-containing tumuli,...
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4695204 |
Traveling trench shore
A trench shore consisting of longitudinal panels which cover the walls of the trench and are supported by movable frames, the panels being moved forward by jacks connecting the panels to the frames...
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4682914 |
Hydraulic trench support
A hydraulic trench support includes a piston and cylinder head supported within a cylinder such that the cylinder head is fixed at one end of the cylinder and the piston is moveable within the...
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4588329 |
Propulsion method and apparatus for advancing a marine pipeline excavation shield
One construction method for burying offshore pipelines utilizes a segmented excavation shield for forming a trench in the seafloor. The present invention provides a propulsion method for advancing...
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4548528 |
Trench shoring apparatus
The invention refers to means of shoring trench excavation. It provides a trench shoring apparatus which supports the walls of the trench and can travel by its own power or be pulled behind an...
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4521137 |
Movable casing for the excavation of trenches
A trenching casing for the continuous excavation and refilling of trenches for the installation of conduits into the ground has spaced side walls consisting of at least upper and lower sections...
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4501517 |
Self propelled trench shield
An apparatus and a method for excavating and pile reinforcing trenches is disclosed. A box-like central structure serves as a frame within which excavation by customary means, e.g., externally...
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4345857 |
Construction plate for a ditch construction device
A construction plate for a ditch construction device consists of profiled steel elements which are rigidly coupled with each other and covered with cover plates. At the small sides of the...
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4319791 |
Protective cage for excavation workers
A box-like housing has defining sides and a top wall all arranged to provide protection for an excavation worker in the housing from cave-ins of the walls of the excavation. The bottom of the...
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4310267 |
Safety trench box
Disclosed herein is a safety trench box for use in protecting workmen from cave-ins while operating within an excavated area. The device includes a barrier which surrounds the work area having a...
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