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8069634 |
Lifting system and apparatus for constructing and enclosing wind turbine towers
An apparatus and method for mounting a wind turbine and blade assembly on the upper end of a wind turbine tower. In one aspect the apparatus generally includes a ginpole that is used to assemble...
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7308953 |
Mobile drilling rig
An embodied mobile drilling rig is made of three sections, two substructures and a mast section, which are easily transported and installed at a drilling site. Each substructure includes a mast...
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7162837 |
Structural member stabilizing system
A bracket connects a structural member to a structural element to stabilize the structural member against movement. The bracket includes connector portions for connecting the bracket to tensioned...
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7055286 |
Modular post system and method of construction
The invention provides a modular post system including a plurality of modular post members 10, 20 which are inter-connectable to form a post structure 30. The modular post members include a...
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6951082 |
Drilling rig with torque carrier
A telescoping rig with an upper mast telescopingly received within a lower mast. A torque carrier is formed of an upper part suspended within the upper mast and a lower part attached to the lower...
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6618999 |
Crown bumper
A safety apparatus for a lifting structure having a crown and at least one traveling block, and an oil derrick having a crown bumper, wherein the safety apparatus comprises at least two support...
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5782042 |
Tilting pole system
A new Tilting Pole System for allowing an individual to quickly and easily perform maintenance upon an object conventionally supported by an elongated pole. The inventive device includes a lower...
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5570546 |
System for raising and lowering communications equipment
A system for lowering and raising telecommunications equipment along a mast pole. The system comprises a mast pole, a platform means, a frame means, a plurality of lift cables, a hoisting means and...
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4932175 |
Telescopic drilling derrick apparatus
A telescopic drilling derrick apparatus that is light for easy transportation and utilizes structure to enable the mast to be raised from a collapsed horizontal position to a vertical position...
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4903443 |
Derrick having upper and lower crown block positions
The crown block has two parallel clusters of sheaves. In one use the crown block is positioned such that the center of the derrick passes through the axle of one of the clusters and a power cable...
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4831795 |
Drilling derrick assembly
A drilling derrick assembly is described which provides for the elevation above ground level of the assembly's working floor which supports both the mast and the drawworks. Prior to erection, the...
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4821816 |
Method of assembling a modular drilling machine
A drilling machine includes a drilling substructure skid which defines two spaced parallel skid runners and a platform. The platform supports a draw works mounted on a draw works skid, and a pipe...
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4722157 |
Building frame support
A method and apparatus for erecting buildings is disclosed. The method involves providing frame elements of a building which may be made up of spaced columns connected together by a beam or beams...
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4662146 |
Building frame support and method of erection
A method and apparatus for erecting buildings is disclosed. The method involves providing frame elements of a building which may be made up of spaced columns connected together by a beam or beams...
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4651884 |
Portable and collapsible derrick structure
A pickup truck derrick assembly includes a base frame, a derrick A-frame pivotally mounted on the base frame, a derrick frame erection subassembly, a frame support and locking subassembly and a...
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4643358 |
Boom mounting assembly
A mechanism for adjusting the height and level of a movable boom is disclosed. This mechanism includes a carrier member mountable for vertical pivotal movement about one end thereof, and a first...
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4620693 |
Pole lifting apparatus
Apparatus for lifting electric line poles is disclosed which also enables a ground rod or stake to be driven into the ground next to such a pole. There is provided a telescopic mast having a hoist...
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4590719 |
Erection hinge
An erection hinge for use in erecting columns for open air structures utilizes a mounting plate which removably attaches to the foundation of such structures and which supports an offset hinge. The...
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4578911 |
Cantilevered mast drilling rig with single step erection
A cantilevered mast drilling rig is disclosed in which the erection operation for elevating the cantilevered mast and the drill rig floor to the elevated operating positions is a single step...
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4578016 |
Shingle loading ladder
An attachment for a conventional ladder comprises first and second mounting arms, support arms and leg members arranged to present a cradle for receiving at least one bundle of shingles therein....
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4478015 |
Cable sling arrangement for pivoting a drilling mast and drawworks elevator to a raised or reclined position in relation to a substructure support and method of cable sling string up
A drilling mast and drawworks elevator are pivotally secured to a substructure support with a frame secured to the support and extending upwardly between the drilling mast and elevator support. A...
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4471587 |
Dual swing-up elevator well drilling apparatus
A well drilling apparatus includes a first swing-up elevator platform on which the mast structure is pivotally mounted. After the mast structure has been raised to its erect position, the first...
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4447997 |
Drilling rig
A drilling rig comprising a base; and an A-frame carried by the base. The A-frame has left and right hydraulic mast cylinders with pistons in the cylinders. The rig also has a mast pivoted on the...
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4292772 |
Trailer mounted high floor drilling mast and substructure arrangement
Telescopable drilling mast means is transportable on and pivotally connected to a first trailer means. Setback tower means is pivotally connected to the drilling mast means and to the first trailer...
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4269396 |
Wrecker-hoist attachment for truck bed
A wrecker-hoist combination attachment for mounting on the bed of a truck includes an A-frame having one end supported by the truck bed and the upper apex supported by a support member connected...
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4269009 |
Low lift, elevatable high floor drilling mast and substructure arrangement therefor
Low level base means extend longitudinally on the earth's surface. Drilling mast support means are positioned adjacent and pivotally connected to the base means and setback tower means are...
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4221088 |
Low lift, elevatable high floor drilling mast and substructure arrangement therefor
Low level base means extend longitudinally on the earth's surface. Drilling mast support means are positioned adjacent and pivotally connected to the base means and setback tower means are...
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4084359 |
Survey apparatus
A survey system employs a ground-based extendible mast so that survey instruments, such as cameras, mounted at the top of the mast can attain heights comparable to those of low-level aerial...
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4080916 |
Maritime platform assemblies
A method of fabricating a maritime assembly comprising the steps of stabilizing a foundation raft alongside a quay, moving at least a part of an erect tower structure from the quay onto the...
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4009544 |
Drilling rig with improved mast support structure
An improved portable drilling rig for drilling deep boreholes in the earth, in which the mast is rotatable to a horizontal position at a small distance above the ground. The mast is of rectangular...
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3945107 |
Process of erecting vertical rising mast
This disclosure describes a drilling mast system which is adapted to be assembled section by section in a vertical position, as distinguished from the conventional method of raising a drilling mast...
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3807109 |
OIL WELL DRILLING APPARATUS
Parallel reclining front and back links have their front ends pivotally connected to a base and their rear ends pivotally connected to an elevatable floor support member on which a gin pole is...
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3803780 |
FOLDING POLE FOR HIGH FLOOR MAST
An oil well derrick gin pole has the upper ends of its front legs connected to its rear legs, and sheaves supported by the upper ends of the rear legs to aid in raising a mast hinged to the base...
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3365008 |
Ultra-large diameter drilling structure and method
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3280520 |
Snubbing apparatus for use with a portable drilling mast
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3280519 |
Slingline arrangement for oil well masts
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3271915 |
Oil well drilling apparatus with selfraising drawworks support
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3262237 |
Oil well drilling apparatus with high floor in mast and gin pole
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3201091 |
Portable oil well drilling apparatus
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3101816 |
Drilling and servicing mast
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3058311 |
Floating oil well drilling equipment
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3032147 |
Mast raising and extending mechanism
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3015374 |
Hydraulic derrick
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3009547 |
Apparatus for multiple well drilling
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3008549 |
Method and apparatus for tilting a mast
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2993570 |
Portable trailer-mounted derrick
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2991852 |
Drilling rig and method of extending an upper section of the mast thereof
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2988179 |
Pivoted oil well mast and method of erecting it
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2985261 |
Upright erecting and hinging means
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2975601 |
Handling of equipment laterally of a well location
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