Bizarre Patents
An aircraft having vertical takeoff and landing capability provided with at least first and second laterally extending paddle wheels rotatable on a central axis perpendicular to the longitudinal axis of the aircraft fuselage and between its nose and tail.
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| Number | Title | Issue Date |
| 7341157 | Enclosed-reeving, live-line boom A crane comprising a boom formed as an elongate tubular structure and a line assembly to extend a line from a least one end of the boom. The line assembly may include a first bank of sheaves, a second bank of sheaves, a line reeved around the first and second banks ... | 03/11/2008 |
| 7255180 | Modular drill system requiring limited field assembly and limited equipment support A modular transfigurable drilling rig comprises one or more transfigurable containers with drilling equipment to form an operational drilling rig. The transfigurable containers include a first and second load bearing support and a load bearing bottom disposed betwee... | 08/14/2007 |
| 6955223 | Blow out preventer handling system A process to transport a blow out preventer for a drilling rig having a drawworks wherein the blow out preventer is transported between a storage area and a use position over a wellbore. The process includes the steps of connecting an upper connector end of an elong... | 10/18/2005 |
| 6932553 | Multipurpose unit for drilling and well intervention The invention is a multipurpose system for a drilling and well intervention made of a pivotable, slidable cantilever on a platform adapted to pivot and to slide along an x-y axis; a tower disposed on the cantilever with a mast, a hoist winch, a splittable block conn... | 08/23/2005 |
| 6662905 | Elevator which counterweight is also the plunger of the propelling fluid dynamic device which produces and controls the movements thereof An elevator includes a special propelling fluid dynamic device which uses as a plunger the duly balanced car counterweight. The car conveys people and things upwards and downwards within a vertical conduit or hoistway supported by a cable extending to an ... | 12/16/2003 |
| 6354769 | Apparatus and method for replacing in-ground elevator cylinder casings A method and apparatus for replacing old, in-ground hydraulic elevator lift cylinders in which a portable tower is erected within the elevator hoistway and a shoring sleeve of larger diameter than the old cylinder is secured to a head plate slidably mount... | 03/12/2002 |
| 6343662 | Hydraulic drilling rig A multi-purpose drilling rig has a movable pipe support cradle which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels along a roof platform supported by load-bearing hydraulic lift... | 02/05/2002 |
| 6296232 | Riser-tensioner The present invention relates to a riser-tensioner for exerting a tensile force from a drilling vessel or drilling platform upon a riser, comprising a riser ring which is for fastening attachably to the top end of the riser, and one or more cables extendi... | 10/02/2001 |
| 6202274 | Arrangement for fastening a piston-cylinder arrangement and method for replacing sealings therein A mounting apparatus for a piston-cylinder arrangement (10,11) in a derrick (1) placed on a drill floor (2), which hydraulic piston-cylinder arrangement (10,11) is adapted to raise and lower a yoke (8) which travels on guide rails (7) in the derrick (1) i... | 03/20/2001 |
| 6095501 | Stretch compensation in a hoisting system for a derrick An apparatus for a derrick, comprising two or more hydraulic piston-cylinder arrangements (10, 11) for raising and lowering a yoke (8) which travels on guide rails (7) in the derrick (1) itself, where two or more wire lines (13) are strung over sheaves (1... | 08/01/2000 |
| 6073903 | Linear force actuators The disclosure relates to a vertically operating linear actuator for a multi-stage extendible column for carrying a cinematograph or TV camera. A load representing the weight imposed by the multi-stage column with its camera is indicated at (10), a vertic... | 06/13/2000 |
| 6068066 | Hydraulic drilling rig A multi-purpose drilling rig has a movable pipe support cradle which moves horizontally to transfer drill pipe from a storage area to the well being drilled, and vice versa. The cradle travels along a roof platform supported by load-bearing hydraulic lift... | 05/30/2000 |
| 6053255 | Blowout preventer lift apparatus and method Apparatus and method for lifting blowout preventers beneath the floor of a drilling rig are provided. More than one cable is used on the drums of winches, allowing the winches to be compact enough for use on a drilling rig floor while avoiding the require... | 04/25/2000 |
| 6032929 | Arrangement in connection with a yoke in a hoisting system for a derrick A hydraulically-operated hoist is disclosed. The hoist includes a plurality of hydraulic piston/cylinder arrangements, each having an upper end. Two guide rails are disposed in parallel with the hydraulic piston/cylinder arrangements. A self-aligning yoke... | 03/07/2000 |
| 5984276 | Cable retraction speed limiter for air balancing hoist A cable retraction speed limiter has a body which is designed to be mounted on the housing of a hoist and a spool which is rotatably supported by the body. A flexible extension member is disposed about the spool so that it can be extended from and retract... | 11/16/1999 |
| 5957431 | Stack lifter for a blowout preventer A lifting apparatus for lifting a heavy object. The lifting apparatus including a frame assembly having a pair of side beams spaced parallel to one another. A sliding sheave assembly is mounted to the frame assembly. The sliding sheave assembly is positio... | 09/28/1999 |
| 5816565 | Hydraulic blowout preventer lifter A lifting apparatus for lifting a heavy object. The lifting apparatus including a frame assembly having a pair of side beams spaced parallel to one another. A sliding sheave assembly is mounted to the frame assembly. The sliding sheave assembly is positio... | 10/06/1998 |
| 5421140 | Tree compressing and packaging apparatus A tree compressing and binding apparatus has particular usefulness in handling of Christmas trees, employs a hydraulic power system which utilizes the even stroke of one or a plurality of hydraulic cylinders to drive a tree through a loader funnel. The ap... | 06/06/1995 |
| 5415379 | Pneumatic winch A winch includes a cylinder containing a movable piston to which are respectively mounted a fixed and a movable pulley assembly around which a line to be pulled is entrained. The pulley assemblies are located within the working chamber and the line enters... | 05/16/1995 |
| 4917566 | Crane attachment for backhoe The invention enables owners of backhoes and similar equipment to use their machines either as a backhoe or as a crane with only minor modifications. The invention provides an attachment for a backhoe that takes advantage of existing hydraulic pistons on ... | 04/17/1990 |
| 4838492 | Spray gun reciprocating device A spray gun reciprocating device has a pair of tracks which are parallel to one another, each track comprises the surfaces of a square tube which are engaged by independently rotatable rollers of each of at least three roller assemblies, the rollers of ea... | 06/13/1989 |
| 4801126 | Hydraulically operated lift mechanism A three-chamber jack employs a telescoping relation between an outer cylinder and an intermediate cylinder, the closed outer ends of which cylinders continuously sustain lifting-load force. An annular piston is fixed to the inner end of the intermediate c... | 01/31/1989 |
| 4767100 | Drilling rig with hoist transportable by a vehicle An improved drilling rig which is mounted on a trailer to be transported from one location to another. The drilling rig includes a hoist for raising and lowering equipment, the hoist including hydraulic cylinders and a pair of cables. One end of each cabl... | 08/30/1988 |
| 4747579 | Post frame machine A post frame machine for applying pulling forces to a damaged automobile comprises two vertical support posts fixedly mounted on a base frame, a hydraulically operated cylinder disposed in each of the posts, and a load chain and pulley arrangement for exe... | 05/31/1988 |
| 4665696 | Hydraulically operated hoist for containerized freight or the like The invention in a preferred embodiment contemplates a dual-lift hydraulic arrangement in which each of two hydraulic-lift systems employs a power integrator in the connection between a charged hydraulic accumulator and a hydraulic actuator for cable susp... | 05/19/1987 |
| 4651652 | Vertically adjustable work desk A work desk has an adjustable height working surface that is raised by a force applied by a lockable gas spring via a first pulley system. The first pulley system doubles the travel of the working surface as compared with the travel of the piston of the g... | 03/24/1987 |
| 4643399 | Apparatus for counterbalancing tongs An apparatus for balancing tongs is comprised of a pair of fluid actuated piston and cylinder assemblies. The rod of each assembly carries a first pair of rotatably mounted pulley wheels, and a second pair of pulley wheels is mounted on the assembly in sp... | 02/17/1987 |
| 4638978 | Hydropneumatic cable tensioner A hydropneumatic cable tensioner is comprised of an enclosed cylinder featuring a plurality of annular chambers. A fixed cable sheave is mounted to one end of the cylinder. A movable cable sheave is mounted to a piston rod connected to a piston which reci... | 01/27/1987 |
| 4540159 | Hydropneumatic cable tensioner A hydropneumatic cable tensioner is comprised of an enclosed cylinder featuring a plurality of annular chambers. A fixed cable sheave is mounted to one end of the cylinder. A movable cable sheave is mounted to a piston rod connected to a piston which reci... | 09/10/1985 |
| 4516478 | Cylinder driven reciprocator A cylinder driven reciprocator uses a block and tackle output to broaden the mechanical range of the cylinder. The output force, speed, and travel distance depends upon the number of moveable pulleys between a fixed reference point and the output attachme... | 05/14/1985 |
| 4485894 | Lift truck mast and carriage assembly A power-up and power-down mast and carriage assembly for a lift truck of the type having a stationary mast section fixed to the truck, a movable inner mast section reciprocable within the stationary mast, a fork carriage movably associated with the inner ... | 12/04/1984 |
| 4460160 | Choker fair-lead assembly for tractors A stationary upright frame is arranged to be mounted on the rear of a tractor and has a horizontal axis fair-lead drum over which choker cables from the drive drum of the tractor are reeved. The horizontal axis fair-lead drum is slidably supported in the ... | 07/17/1984 |
| 4455013 | Hoist A hoist comprises a housing carrying a fixed and slidable sheave set which are engaged by a rope. A piston and cylinder combination are connected to the slidable sheave set for moving it and thus moving a load connected to the rope. The piston has a threa... | 06/19/1984 |
| 4455118 | Opposed cylinder cable hoist mechanism Hoist mechanism for a truck vehicle of the type having a pivotally movable load support frame. Opposed piston hydraulic cylinders are carried by the load support frame. Each of the hydraulic cylinders has a piston rod to which is attached a rotatable shea... | 06/19/1984 |
| 4365693 | High visibility lift apparatus Apparatus (10) for lifting or moving loads require high operator visibility and simplicity of construction. For example, in a mast assembly (10) such as can be used on a fork lift truck or other cargo handler it is desirable to maximize visibility through... | 12/28/1982 |
| 4349179 | Control means for motion compensation devices A control system for stabilizing a body suspended by a flexible line from a structure such as a ship, which is subject to uncontrolled oscillating movements, such as may be caused by wave motion, incorporates a winch (3) to which the line is attached, a p... | 09/14/1982 |
| 4341270 | Drill string suspension tower Improved means for suspending a drill string using a pair of hydraulically actuated belts is disclosed. A derrick or tower is mounted to a base to overlie a standard rotary drill table. The drill string (comprising a number of drill pipes and a drill coll... | 07/27/1982 |
| 4341373 | Hydraulic well derrick with cable lifts As part of a well derrick system using pair of elongated hydraulic cylinders mounted on the derrick face for well pipe elevating, in which an equalizer beam bridges the cylinder ram heads to maintain equality of advance of the rams, the beam being pivoted... | 07/27/1982 |
| 4289177 | Tree processing apparatus An apparatus (10) for processing trees includes a hollow boom structure (12), a processing head (14) mounted for movement along the boom and an actuating cylinder assembly (38) which is mounted inside the boom structure. The cylinder includes a body membe... | 09/15/1981 |
| 4269395 | Portable hydraulic rig for performing workover, drilling and other operations on a well A new and improved portable hydraulic rig for performing workover, drilling or other operations on a well, usually a petroleum well, wherein the rig has a telescoping mast for telescoping to a reduced length for transportation, wherein the mast is cantile... | 05/26/1981 |
