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7703616 |
Telescopable sliding beam
The present disclosure relates to a telescopable sliding beam comprising a sliding beam box and at least one first and one second sliding beam, which are telescopable into each other, the first...
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7360662 |
Telescopic boom arm
A telescopic boom arm operable between a retracted position and an extended position includes an elongate first boom section, an elongate second boom section, and a flexible hydraulic line.
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6881021 |
Telescopic jib for a motor vehicle or a crane
A telescopic boom (1) for a vehicle (25) or a hoist with a storage rack (6) for at least two box girders (2, 3) guided displaceably in one another in the direction of their longitudinal axes, which...
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6601719 |
Locking and latching system for a telescoping boom
A locking and latching system for use with a telescoping boom assembly in a crane or other lifting device is provided. The system may include complementary devices for latching and unlocking a...
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6575318 |
Locking unit for a telescopic jib of a crane and telescopic jib
A locking unit for a telescopic system of a hydraulically actuated telescopic jib of a crane, having a jib box frame and a plurality of telescopic sections which are guided inside one another and...
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6536325 |
Hydraulic cylinder for telescopic arms
Hydraulic cylinder for telescopic arms, especially crane arms, consisting of a sleeve (1) closed by means of end covers (2) and (3); an internal piston (4) delimiting expansion (5) and retraction...
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6527131 |
Crane with a telescopic boom
Segments can be telescoped out of the base boom with boom guides of a telescopic boom of a crane, which in either their extended or retracted positions are locked by locking pins. After releasing...
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6516960 |
Method for synchronously retracting and extending telescopic lengths of a crane
A method for synchronously retracting and extending a jib of a crane having a plurality of telescoping lengths, preferably in a vehicle crane, extending and retracting being with driving means...
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6474486 |
Method of telescoping a crane jib, apparatus for implementing the method, and a crane jib constituting an application thereof
The invention relates an apparatus for hoisting and handling equipment wherein the apparatus includes locking members having a locking block (30) carried by each telescopic element and including...
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6435805 |
Tire manipulator for mine service vehicles
A tire manipulator for mine service vehicles has a mast for mounting on a vehicle, a telescopic boom connected to said mast and wheel handling equipment connected to said telescopic boom. A first...
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6434437 |
Boom extension and boom angle control for a machine
A boom control apparatus and method are disclosed for controlling a boom of a machine. The boom control apparatus includes a boom angle sensor, a boom length sensor, a chassis pitch angle sensor, a...
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6364142 |
Hydraulic oil feed plunger cylinder
A crane vehicle comprising a telescopic main boom which can be hydraulically configured by means of an assembly comprising a plunger cylinder and to which a derrick mast can be secured is provided...
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6244450 |
Method and apparatus for telescoping boom with hydraulic extension actuators
A method of constructing a five section telescoping aerial lift, crane or similar vehicle-mounted equipment and a lift constructed in accordance with the method having one end pivotally secured,...
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6206213 |
Crane with a luffing jib
A crane, includes a luffing jib having individual telescoping jib members, and a locking device configured for linkage of jib members and movable between an engagement position in which the jib...
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6199707 |
Telescopic boom
A telescopic boom 9 comprises a proximal boom 9a, an intermediate boom 9b, and a distal boom 9c assembled together in a telescopic fashion. A telescopic cylinder 21 is disposed such that a distal...
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6189712 |
Crane with telescope jib
A crane includes a telescopic jib having telescopic jib sections and a base jib. The telescopic sections are arranged so that they can be axially moved into and out of the base jib individually....
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6182995 |
Extendable semi-trailer
The invention provides for the management and protection of excess lengths of utility cables in extendable semi-trailers. Utility cables are affixed to the front and rear sections of an extendable...
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6053341 |
Device in extendible crane booms
An extendible crane boom comprises a number of telescopic boom sections, which are each composed of a tube and a holder mounted at an outer end of the tube and serving as an attachment for a...
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5927520 |
Electro-hydraulic operating system for extensible boom crane
An electro-hydraulic operating system for an extensible boom includes one or more hydraulic cylinders for imparting relative motion between the boom sections to retract the boom according to an...
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5813552 |
Telescopic boom with multistage hydraulic cylinder
A telescopic boom contains a multistage hydraulic cylinder for extending and retracting the boom parts. The telescopic boom is characterized in that a first component of a supporting device is...
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5743149 |
Articulated telescopic boom having slide-through knuckle
An articulated telescopic boom assembly for a lifting device includes a first elongated boom having a central longitudinal axis and an opening in one end; a second elongated boom having a first end...
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5718345 |
Carrier track system for independent and/or synchronized operation of a multi-section telescopic boom structure
A carrier track system for a multi-section telescopic boom structure having a base section, a mid section and a fly section. A pair of flexible tracks carrying flexible hydraulic hoses and...
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5695082 |
Crane having a readily removable outer boom section
A crane apparatus includes an upstanding mainframe and a boom unit supported for pivoting movement on the mainframe about a horizontal axis. The boom unit includes a base boom, an outer boom...
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5678708 |
Extendible crane boom
An extendible crane boom comprises, in addition to a tubular base boom section (1), a plurality of boom sections (2, 3, 4, 5) telescopically within the base boom section and each composed of a tube...
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5628416 |
Traveling crane with telescoping boom
A traveling crane including a telescoping boom whose individual telescopically extending boom members are able to be extended and retracted after the disengagement of locking bolt connections using...
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5624046 |
Telescopic rods for a crane
A telescopic rod composed of a plurality of tubular rod sections which are mounted so as to be slidable within each other includes a multistage piston-cylinder unit which is arranged within the...
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5568829 |
Boom construction for sliding boom delimeers
An improved boom (24) for a sliding boom delimber (10) is disclosed formed from a prestressed, conventional I beam (28). A first segment of a cable bundle (70) extends from the grapple head (36)...
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5518129 |
Boom including plural arms telescopically extendible and retractable successively
A loading crane that can be mounted on a lorry has a jib composed of several arms telescopically nested into each other. A hydraulic unit composed of piston and cylinder is arranged between...
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5501346 |
Multistage telescope boom
A multistage telescopic boom or jib, in particular for a loading crane on a truck, has hydraulic units each including a piston and a cylinder arranged between the successive, telescopically nested...
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5494397 |
Load handling apparatus
A load handling apparatus for a vehicle includes a telescopic boom pivotably mounted on a chassis frame of the vehicle. The boom has first, second, third, and fourth sections telescopically engaged...
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5465855 |
Telescoping crane arm
A telescoping crane arm assembly includes a base body; a power cylinder extendable from and retractable into the base body; a plurality of crane arm segments extendable from and retractable into...
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5267824 |
Tool controlling mechanisms for excavator with telescopic arm
An excavator comprising a movable body, a boom mounted on the movable body, first hydraulic cylinders, an outer arm pivotally mounted on the boom, a second hydraulic cylinder mounted on a rear...
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5061149 |
Fork lift vehicle having a telescopic boom with an articulated jib section capable of vertical and horizontal swinging relative to the boom
An extendable boom fork lift vehicle is described wherein the boom and its actuator are positioned over the rear axle of the vehicle such that the weight of the frame between the front and rear...
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5056673 |
Gin for electrical equipment
A gin or lifting mechanism is provided for relatively heavy electrical equipment, such as transformers and the like. The gin is removably mounted on a pole above a cluster rack which is to receive...
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4954041 |
Triple section telescopic boom materials handling vehicle
A variable reach rough terrain load lifting apparatus comprising a vehicle having a frame; a boom having innermost, intermediate and outermost telescoping boom segments; and means for pivotally...
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4927315 |
Vehicle lifting and towing apparatus
A wheel lift type vehicle lifting and towing device which includes an extendible and tiltable boom having three telescoping sections for extension from the rear of a towing vehicle and means for...
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4919585 |
Vehicular mounted excavator
A rotatable, vertically positioned boom support attached to a flat-bed truck. The boom support is rotatable through the use of meshed gearing powered by a reversible hydraulic motor. The boom...
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4809472 |
Carrier track assembly for extensible and retractable boom machines
A carrier track assembly for extensible and retractable boom machines wherein the carrier track assembly is positioned within the telescopic boom sections and has one end connected to the extension...
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4793765 |
Material handling apparatus
An extendable material handling arm which is particularly suitable for use as a dipper stick of a back hoe digger. The arm has an outer member with a slot extending along its length, and an inner...
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4775029 |
Collapsible tower boom lift
A collapsible boom lift comprised of upper and lower telescoping boom assemblies. The upper boom is pivotally connected to an upright support member which is pivotally connected at its lower end to...
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4735523 |
Vibratory compaction working machine
A vibratory compaction working machine has a lower travel structure and an upper swing structure mounted on the lower travel structure. The upper swing structure has a boom mounted thereon for...
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4690290 |
Device of the kind comprising at least three movably co-ordinated parts
A device for providing relative movement between three telescopically co-ordinated parts (1, 2, 3) which comprises a power device (7) of a type variable in length and acting between a point (8) on...
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4688689 |
Telescoping crane boom
So that the boom does not have to be oriented horizontally to change the crane configuration, a remotely controlled double locking device is mounted at the front end of each intermediate...
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4688690 |
Method and apparatus for extending fly section of crane boom
Method and apparatus for extending a fly section of a telescopic crane boom which fly section does not have its own power unit to effect extension or retraction. The boom includes a base section,...
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4588347 |
Telescopic booms
A telescopic boom for a crane, access platform or the like comprises at least three telescopic boom sections the intermediate section being arranged to be extended by a hydraulic ram while the...
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4585132 |
Extensible boom with manual section stored in base
A multi-section telescopic boom is disclosed having a base section supported for pivotal movement, a manual section telescopically received in said base section, a mid section, and a tip section...
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4575976 |
Extension and retraction system for boom apparatus
An extension and retraction system for a multiple section, telescoping boom apparatus of the type utilized for raising and lowering a work platform or basket. The innermost longitudinally movable...
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4544071 |
External pendant pay-out system with anti-droop control
An apparatus is disclosed for maintaining a predetermined mast-boom working angle of a pendant supported boom substantially constant during extension and retraction of the boom. One embodiment of...
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4490951 |
Remotely operable latch and locking pin for a multi-section boom including a manual fly section
A multi-section hydraulically operated telescoping crane boom includes a manual fly section (23) which may be safely extended and retracted, securely latched in the extended position and pin locked...
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4489838 |
Low droop multi-part pendant supported boom
A telescopic boom is disclosed which is pivotally supported by its base section for movement about a horizontal axis. The boom is supported by a live mast through multi-part pendant lines, which...
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