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| Number | Title | Issue Date |
| 7293669 | Tensioning system for a mobile telescopic crane The invention relates to a tensioning system for a mobile telescopic crane, in which the telescopic mast is outwardly braced via a tensioning means, and wherein said tensioning means is guided along or over the telescopic mast and fastened to the telescopic mast in ... | 11/13/2007 |
| 7213717 | Telescopic boom The within invention concerns a telescopic boom of a crane with a pivot section, telescopic sections that can telescope out of the pivot section, and a guying that has at least one guy stand housed to pivot on one of the sections, and at least one guy cable supporte... | 05/08/2007 |
| 5865328 | Telescopic boom The present invention relates to a telescopic boom with at least one outer structure and at least one inner structure, each of which is designed as a hollow section with upper flange and lower flange, the upper flange having a half-basket profile with two... | 02/02/1999 |
| 5803279 | Automatically deployable load-line receiving mast structure for limiting deflection of proportionally extendable boom section crane A proportionally extendable multi section boom crane is provided with an automatically erectable mast pivotally carried by one of the boom sections. The mast, which has a secondary sheave on the outer end thereof, normally rests in a stowed position adjac... | 09/08/1998 |
| 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 and a holder (8, 8', 8", 8"') mounted at an outer end the... | 10/21/1997 |
| 5632395 | Telescopic rod A telescopic rod with a plurality of tubular rod sections which are mounted so as to be slidable within each other, and with a multistage piston-cylinder unit arranged within the telescopic rod. The multistage piston-cylinder unit is connected, on the one... | 05/27/1997 |
| 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 telescopic rod and is connected to the outermost rod section ... | 04/29/1997 |
| 5595313 | Crane, particularly a track-bound mobile crane A crane for raising and lowering a load, which crane includes a vehicle frame with end areas and a slewing device arranged on the vehicle frame. The slewing device includes at least two basic slewing columns slewable by 360°, mounted on the vehicle frame... | 01/21/1997 |
| 5542812 | Crane having swing away hoist mount A truck mounted crane assembly includes a turntable lock, a boom rest which interacts with the piston and cylinder device, and a swing away hoist mount. The turntable lock includes a pin which is manually retractable upon rotation of a handle from a posit... | 08/06/1996 |
| 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 successive arms. When an arm is extended, a stop arranged on the ... | 05/21/1996 |
| 5203837 | Balanced lifting crane A crane has a generally horizontally disposed main boom arm centrally pivotally mounted on a turret supported for rotation atop a central column. The main boom arm supports a load at one end and a counterweight at its other end. The main boom arm load sup... | 04/20/1993 |
| 5139157 | Concrete placing boom assembly for ready-mix concrete The invention is directed to a concrete placing boom assembly for use with two trucks. The assembly includes a base frame and a rotatable turret rotatably mounted on the base frame. A foldable boom is pivotally connected to the turret and includes a plura... | 08/18/1992 |
| 5119961 | Electric pickup winch A removable, truck mounted crane with both an inclined boom for high lift and a horizontal telescoping boom for extended reach beyond the truck. The crane has two winches either of which can be routed to either boom. The high boom can be used normally for... | 06/09/1992 |
| 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 axles and behind the rear axle may be reduced. A modified boo... | 10/29/1991 |
| 5018933 | Device for transferring an invalid to and from an automobile A device (10) for transferring an invalid includes a beam (11) comprised of two telescopically received tubes (12,13); a track (14), slidably engaged within said beam capable of supporting a rolling trolley (15) and connected winch (16) for providing a ve... | 05/28/1991 |
| 4982853 | Reinforcement mechanism for multi-stage telescopic boom A multi-stage boom having a plurality of boom members including a first boom member, at least one intermediate boom member and a last boom member, each being slideably inserted into its subordinate boom member to undergo telescopic expansion and contracti... | 01/08/1991 |
| 4954042 | Double telescoping arm for robotic palletizers and the like A double telescoping horizontal arm, adapted for use in a robotic palletizer, including an outer member, an intermediate member and an inner member in telescoping relationship to one another. An idler wheel, mounted to the intermediate member, simultaneou... | 09/04/1990 |
| 4666357 | Ship transport system A transport system (10) for transporting a litter carrier (40) from one location onboard a first ship to a second location onboard another ship includes a retractable boom (12) having a stationary member (16) and a telescoping member (18) slidably engaged... | 05/19/1987 |
| 4660731 | Telescopic crane for heavy loads A separate boom vehicle is provided for transporting a telescopic boom, which is adapted to be coupled to a revolving superstructure and to be detached from it for transporting. The boom vehicle is provided in its forward portion with a coupling structure... | 04/28/1987 |
| 4658972 | Method for stretching and folding extension jib in wheeled type crane A method for stretching and folding an extension jib in a wheeled type crane including a telescopic boom, and a suspension-rod-supported compression column type extension jib to be supported in a flat posture at the fore end of the boom in stretched state... | 04/21/1987 |
| 4635805 | Crane boom locking pin insertion indicator and actuator means A power actuator on the base section of a multi-section telescoping crane boom can bridge at least one intermediate boom section to operate a biased locking pin retract mechanism employed in a system for remotely controlling the operation of a manual fly ... | 01/13/1987 |
| 4605132 | Lifting tool A lifting device for a marine vessel having a foot part that can be put on a flat support and an upper part adapted to pivot with respect to the foot part about a vertical axis and having at least one lifting arm and the lifting arm being extendible by a ... | 08/12/1986 |
| 4547121 | Self-locking telescoping manipulator arm A telescoping manipulator arm and pivotable finger assembly are disclosed. The telescoping arm assembly (A) includes a generally T-shaped arm (18) having three outwardly extending fingers (18a, 18b, 18c) guided on the grooved roller guides (12, 14, 16) to... | 10/15/1985 |
| 4436476 | Rod device for use as an arm of an excavator A rod device for use as an arm of an excavator, so as to be pivotally supported by a boom and inclined relative to the boom by an actuator, including a plurality of tubular elements assembled in a telescoping manner, means for restricting relative axial m... | 03/13/1984 |
| 4396126 | Telescoping crane boom Apparatus and method for extending a fly section of a telescopic crane boom which fly section does not have its own power extension/retraction unit. The crane boom comprises at least a first or fly section, a second section, and a third or base section. L... | 08/02/1983 |
| 4392573 | Tie rope compensation arrangement A telescopic strut jib crane includes a jib with at least three telescopic sections and at least one tie rope of fixed length. The rope is fed between the head of the base section and head of the outer section around a pulley at the foot of an intermediat... | 07/12/1983 |
| 4352434 | Pendant supported hydraulic extensible boom A crane with a telescopic extensible boom is disclosed. Two cylinders within the boom are each connected between adjacent sections for relative movement between the sections. Pendants are trained over sheaves on a live mast, and one end of the pendants is... | 10/05/1982 |
| 4298128 | Movable support for rotatable extend/retract screw in telescopic crane boom A telescopic boom comprises inner and outer boom sections; an elongated rotatable screw rotatably mounted on the outer section; a first thread on the screw engaged with a first nut on the inner boom section whereby screw rotation effects telescopic moveme... | 11/03/1981 |
| 4266908 | Excavating apparatus An apparatus for excavating or cleaning out sumps and drainage pits includes a mobile, towable chassis rotatably supporting a platform thereon. A standard extends upwardly from the platform and an elongate, rigid boom structure and guide is mounted upon t... | 05/12/1981 |
| 4257201 | Self-centering telescoping beams A hydraulically extensible crane boom includes a plurality of mutually innernested, telescopically associated inward and outward boom sections. Each section is made up of a pair of longitudinally extending, parallel, spaced apart upper structural shapes o... | 03/24/1981 |
| 4249853 | Apparatus for loading and unloading a vehicle Apparatus for loading and unloading a vehicle comprising a supporting frame having a pair of parallel spaced horizontally extending elongated tracks supported near the ends thereof by upstanding legs and elongated cross members operatively secured to said... | 02/10/1981 |
| 4036372 | Extension and retraction means for the telescopic boom assembly of a crane Means for extending and retracting the telescoping boom assembly of a rotatable mobile crane wherein the boom assembly comprises a plurality of telescoping parts, slidably received one into the other. The boom extension and retraction means is operable at... | 07/19/1977 |
| 3978990 | Mobile log skidder The carriage of the skidder is equipped with an elongated boom and a haulback cable, and there are power driven means on the boom for paying out the attachment end of the cable to the site of the logs, and power driven means on the carriage for hauling in... | 09/07/1976 |
| 3972571 | Boom slider assembly An improved boom includes a slider assembly for use in supporting telescoping sections of the boom for movement relative to each other. An articulated slider assembly embodying the invention includes a rocker member which is pivotally mounted on one secti... | 08/03/1976 |
| 3963127 | Blocking arrangement in hydraulically operated cranes In hydraulically operated loading cranes, particularly loading cranes comprising multiple loading arms, a blocking device in the form of a return piston arranged, upon occurrence of an excessive pressure in the master cylinder, to prevent operation of pis... | 06/15/1976 |
| 3960285 | Material handling apparatus A material handling apparatus includes an improved force transmitting assembly which is utilized to rotate a base boom section relative to a cradle and to retain the base boom section against axial movement relative to the cradle. The force transmitting a... | 06/01/1976 |
| 3954196 | Material handling apparatus An improved material handling apparatus includes a base boom section which is rotatably supported in a cradle and a second boom section which is telescopically received within the base boom section and is movable axially relative to the base boom section.... | 05/04/1976 |
| 3945333 | Means for storing and connecting jib for telescopic boom of mobile crane A mobile crane has a multisection telescopic boom and an optionally useable lattice jib storable alongside the boom with the base end of the jib adjacent the point end of the boom. One side of the boom base section is provided with a pair of longitudinall... | 03/23/1976 |
