Extensible By Sliding Sections Patents (Class 212/348)
  • Patent number: 9031750
    Abstract: When an extension pattern selection device is activated, a normal mode is displayed on a screen of a monitor. An operator presses a manual mode switch key of an operation unit to switch the display mode of the screen from the normal mode to an extension pattern manual rearrangement mode. In the extension pattern manual rearrangement mode, the operator rearranges extension patterns so that frequently selected extension patterns P may be displayed at upper positions. Thus, the frequently selected extension patterns P are more preferentially displayed than the other extension patterns P.
    Type: Grant
    Filed: April 1, 2014
    Date of Patent: May 12, 2015
    Assignee: Tadano Ltd.
    Inventor: Masato Miyoshi
  • Patent number: 9016487
    Abstract: A crane apparatus includes: a telescopic boom including a plurality of boom members, the telescopic boom performing telescopic motion by moving the plurality of boom members one by one using one telescopic cylinder; a condition input part configured to receive, as input, a condition for a crane operation including at least a weight of goods suspended by the telescopic boom, a height to which suspended goods are lifted, and a moving radius of the suspended goods; and a telescopic pattern selecting part configured to select a telescopic pattern that allows the crane operation under the condition inputted to the condition input part.
    Type: Grant
    Filed: November 30, 2011
    Date of Patent: April 28, 2015
    Assignee: Tadano Ltd.
    Inventor: Yasushi Kameyama
  • Publication number: 20150083684
    Abstract: A rope guide for a crane, in particular a rope guide for a telescopic crane, comprises at least one guiding element for a rope which extends from a boom head along the boom of the crane. The guide is characterized in that at least one of the guiding elements comprises a spacer which has, on its rope-sliding surface facing the rope and as viewed transversely to the direction of the rope's extension, a substantially round concave form. Embodiments have a spacer with one or more grooves which guide and accommodate the rope.
    Type: Application
    Filed: September 23, 2014
    Publication date: March 26, 2015
    Inventors: Jörg Böhm, Erik Schaefer, Volker Grassow
  • Patent number: 8899878
    Abstract: A portable winch and method of use is shown. One advantage of winches shown includes an ability to lower a boom or boom sections into limited access exit pit for winching operations such as pipe bursting. Sectional boom designs shown provide the ability to easily raise and lower a boom large distances without the need for a single long boom. Selected winch designs shown include flexible inserts between the boom and the winch frame that help resist damage from unforeseen shifting of the device during operation. Designs and methods shown also include multiple pulleys on a boom end unit. Fasteners are shown that reduce build up of debris.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: December 2, 2014
    Assignee: TT Technologies, Inc.
    Inventor: Michael Tjader
  • Patent number: 8893905
    Abstract: A crane jib system having a main jib, an auxiliary jib, and a telescoping cylinder. The main jib is comprised of main telescoping portions and the auxiliary jib is attached to the main jib and comprises auxiliary telescoping portions. The telescoping cylinder has a first telescopic part locking unit disposed on a base portion of the telescoping cylinder. The first telescopic locking unit is adapted to selectively engage the main telescoping portions. A second telescopic part locking unit is disposed on the telescoping cylinder above the first telescopic part locking unit. The second telescopic part locking unit is adapted to selectively engage the auxiliary telescoping portions.
    Type: Grant
    Filed: December 16, 2011
    Date of Patent: November 25, 2014
    Assignee: Manitowoc Crane Group France SAS
    Inventor: Dieter Stührwoldt
  • Publication number: 20140339188
    Abstract: A telescopic boom for a crane has at least two telescopable telescoping sections in the form of lattice pieces, each of which exhibits a hollow structure that has in essence the shape of a box. The bottom chords of adjacent sections have in each instance a pinning structure to provide for pinning to each other during normal crane operations. By way of the design of at least the outer telescoping section, at least some of the force that is introduced into the pinned joint can be dissipated into the top chord of the boom.
    Type: Application
    Filed: April 10, 2014
    Publication date: November 20, 2014
    Applicant: Liebherr-Werk Ehingen GmbH
    Inventor: Sebastian BRZOSKA
  • Patent number: 8807534
    Abstract: A lifting device with a telescopic pole having at least three successive modules mounted so that the modules can slide vertically with respect to each other. A drive strap transfers movement in order to extend an upper module with respect to an intermediate module when the intermediate module is caused to move with respect to a lower module of the modules. The drive strap is kept taut between two fixation points placed respectively on the lower module and upper modules and pass along a return pulley device mounted on the intermediate module. A safety system is normally maintained in inactive position by tension of the drive strap is automatically released into active locking position to prevent the upper module from continuing to move with respect to the intermediate module if the drive strap breaks.
    Type: Grant
    Filed: January 24, 2012
    Date of Patent: August 19, 2014
    Assignee: Talbot Decoupage Emboutissage
    Inventor: Francois-Xavier Guyard
  • Patent number: 8777027
    Abstract: The present application relates to a mobile crane comprising a telescopic boom which has a hinged section and at least one telescopic section which can be telescoped out of it, or to a crawler-mounted crane. In accordance with one embodiment, as a position detection device, it has at least one transducer in the form of an inductively operating transponder, a receiver unit for the sensing of the position of the transducer, a control device for control in dependence on a signal of the receiver unit, as well as a signal transmission device in the form of a databus for the transmission of the signal data from the receiver unit to the control device.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: July 15, 2014
    Assignee: Liebherr-Werk Ehingen GmbH
    Inventor: Erwin Morath
  • Patent number: 8769907
    Abstract: Construction elements and methods of using and making them in a structurally strong manner are disclosed. The construction element and the method of making it may be in the form of an elongated beam, a post or other. The element may include a generally tubular open frame formed of a series of conjoined octahedral sections constructed and arranged in a side by side manner joined together by conjoined pairs of tetrahedral sections disposed intermediate the octahedral sections. Each pair of octahedral sections may be constructed and arranged such that they are conjoined together by a common member, also common with the intermediate tetrahedral sections. The method may include forming an upright structure, using at least one large construction element having a plurality of octahedral and tetrahedral sections, and positioning at least one small construction element within an opening within the sections of the large construction element and affixing thereto.
    Type: Grant
    Filed: November 20, 2009
    Date of Patent: July 8, 2014
    Inventor: Bruce E. Camber
  • Publication number: 20140083968
    Abstract: A telescopic boom includes a first frame having a curved portion whose section is substantially U-shaped, and a second frame connected to the first frame so that a closed section is formed. In the telescopic boom, the U-shaped curved portion of the first frame includes a plurality of protrusion portions formed at intervals in a circumferential direction of the telescopic boom, each protrusion portion extending in a longitudinal direction of the telescopic boom and being formed to have an arc-shaped section and protrude to the outside of the first frame.
    Type: Application
    Filed: September 27, 2013
    Publication date: March 27, 2014
    Applicant: TADANO LTD.
    Inventors: Kazuhiro KOBAYASHI, Kenji TANAKA
  • Patent number: 8657258
    Abstract: A pump jack for driving a reciprocating pump is provided. The pump jack comprises a support base and a support frame mounted thereto. A hydraulic cylinder is mounted to the support frame. A pulley mechanism is connected to a piston of the hydraulic cylinder, the support frame, and to a sucker rod of the reciprocating pump. The pulley mechanism translates movement of the piston into movement of the sucker rod such that pushing action of the piston provides pulling action acting on the sucker rod. A drive mechanism connected to the hydraulic cylinder for actuating the hydraulic cylinder.
    Type: Grant
    Filed: March 27, 2011
    Date of Patent: February 25, 2014
    Inventors: Murray Ames McEwan, James Lawrence Gaboury
  • Patent number: 8549812
    Abstract: A telescoping structure includes a hollow outer section and a hollow inner section slidably mounted in the hollow outer section. The hollow outer section includes a first sidewall, a second sidewall and a third sidewall. The hollow inner section includes a fourth sidewall, a fifth sidewall and a sixth sidewall. A pair of sliding rails is disposed on the interior side of the first sidewall and a pair of raised sliding grooves is defined on the exterior side of the fourth sidewall. The pair of raised sliding grooves engages with the pair of sliding rails to enable a sliding movement of the hollow inner section relative to the hollow outer section.
    Type: Grant
    Filed: November 26, 2012
    Date of Patent: October 8, 2013
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Wei Peng, Wen-Jing Liu, Hsing-Yi Hu
  • Patent number: 8375649
    Abstract: The subject matter of the invention relates to a support arm for a lifting platform, comprising at least one relatively wide support arm and an extension arm telescopically slidable therein, the arms each having torsionally rigid and flexurally stiff hollow profiles, a support bearing at the rear end of the accommodating arm for the pivotable hinging connection to a lifting carriage of a column and a bearing foot at the free end of the respective extension arm. A cost-effective production of support arms in different sizes and shapes is obtained by cutting at least the accommodating arm from a steel panel blank and forming it into a hollow profile and providing it with at least one transverse reinforcement.
    Type: Grant
    Filed: January 29, 2007
    Date of Patent: February 19, 2013
    Assignee: Maha Maschinenbau Haldenwang GmbH & Co. KG
    Inventors: Juergen Grotz, Winfried Schmitt, Thomas Deuring
  • Publication number: 20130020274
    Abstract: A beam for use in construction equipment is made from tailor welded panels. At least one of the panels is made from at least two pieces of material such as steel welded together with the weld running the length of the beam. The weld between pieces of steel can either be parallel to the longitudinal axis of the beam, or the pieces can be tapered and the weld will be at an angle diverging from the longitudinal axis of the beam. The two pieces of material have a different compressive strength per unit of length in a direction transverse to the longitudinal axis of the beam. In some embodiments a top panel is welded to two side panels to form two top corners of the beam and a bottom panel is welded to the two side panels to form two bottom corners of the beam.
    Type: Application
    Filed: September 21, 2011
    Publication date: January 24, 2013
    Inventors: Arumugam Munuswamy, Donald C. Hade, JR., Uday Sankar Meka, Ashok K. Bonde
  • Publication number: 20120199543
    Abstract: A boom for a crane assembly includes first and second sections. The second section is configured to be at least partially nested within the first section of the boom, and is further configured to slide relative to the first section of the boom. Each of the first and second sections of the boom have a tubular cross-section. Furthermore, the first and second sections of the boom each include first and second pieces. The first piece has two edges extending lengthwise along the respective section, and the second piece has two edges extending lengthwise along the respective section. The first and second pieces are arranged such that the two edges of the first piece overlap the two edges of the second piece, and the first and second pieces are welded together along an exterior end of the overlapping edges.
    Type: Application
    Filed: February 9, 2011
    Publication date: August 9, 2012
    Inventors: Kevin M. Bell, Bradley G. Ethington, Steven C. Fairbanks, Thomas D. Schremser
  • Publication number: 20120138560
    Abstract: A crane apparatus includes: a telescopic boom including a plurality of boom members, the telescopic boom performing telescopic motion by moving the plurality of boom members one by one using one telescopic cylinder; a condition input part configured to receive, as input, a condition for a crane operation including at least a weight of goods suspended by the telescopic boom, a height to which suspended goods are lifted, and a moving radius of the suspended goods; and a telescopic pattern selecting part configured to select a telescopic pattern that allows the crane operation under the condition inputted to the condition input part.
    Type: Application
    Filed: November 30, 2011
    Publication date: June 7, 2012
    Applicant: TADANO Ltd.
    Inventor: Yasushi Kameyama
  • Patent number: 8181921
    Abstract: Disclosed are various embodiments of a platform telescoping system which comprises a platform, a first supporting arm, a second supporting arm, a telescopic driving mechanism which comprises a first power output, end and a rotational driving mechanism which comprises a second power output end. The first power output end is integrated with the second supporting arm and causes the second supporting arm to move in a first direction, and the second power output end is integrated with the platform and causes the platform to pivot between a first position and a second position. The second supporting arm telescopes with respect to the first supporting arm for adjusting the position of the platform. The space occupied by the platform telescoping system may be reduced while its functions enhanced.
    Type: Grant
    Filed: February 4, 2009
    Date of Patent: May 22, 2012
    Assignee: Shenzhen Mindray Bio-Medical Electronics Co., Ltd.
    Inventors: Zhiyuan Shi, Xiaohong Chen
  • Publication number: 20120085723
    Abstract: The present invention relates to a boom element for a telescopic boom, particularly a telescopic shot or a telescopic boom base section, wherein the boom element has cupped corner pieces and lattice bars, and the cupped corner pieces are interconnected by means of the lattice bars, wherein the lattice bars are arranged in a framework, at a right angle with respect to the corner pieces, and/or at an angle different from a right angle, particularly at an acute or obtuse angle, with respect to the corner pieces, and the corner pieces and the lattice bars form a substantially box-shaped hollow structure.
    Type: Application
    Filed: October 7, 2011
    Publication date: April 12, 2012
    Applicant: Liebherr-Werk Ehingen GmbH
    Inventor: Hans-Dieter Willim
  • Publication number: 20120074089
    Abstract: The present invention relates to a telescopic section comprising a section tube having at least two bolt parts each having a cut-out, wherein at least one common bolt sheet is provided on or in the profile tube for reinforcing at least two bolt points.
    Type: Application
    Filed: September 22, 2011
    Publication date: March 29, 2012
    Applicant: Liebherr-Werk Ehingen GmbH
    Inventors: HANS-DIETER WILLIM, ENGELBERT HÄBE, Joachim Henkel
  • Publication number: 20120061341
    Abstract: This invention relates to a crane, in particular a telescopic crane, with a frame suspended on the load hook for taking up a special load, in particular for taking up a rotor blade of a wind turbine. In accordance with the invention a single guide cable without guying function is provided, which proceeding from the boom foot is tensioned parallel to the direction of the longitudinal axis of the boom system and is attached to the boom system at its end, wherein a frame suspended on the load hook is connected with the guide cable via at least two control cables.
    Type: Application
    Filed: September 2, 2011
    Publication date: March 15, 2012
    Applicant: Liebherr-Werk Ehingen GmbH
    Inventor: Yggve Richter
  • Patent number: 8127949
    Abstract: A backstay spreader attachable between a pair of backstay sections on a crane includes first and second members each having a backstay section connector at a first end and a pivoting joint connector at a second end, the pivoting joint connectors being used to hold the first and second members together with a pivotal connection and each having an extending portion extending away from the pivotal connection, with an angle between the extending portions. The backstay spreader also includes an actuator mounted between the pivoting joint connectors. The actuator controls the angle between the extending portions of the two pivoting joint connectors, which defines an angle between the first and second members.
    Type: Grant
    Filed: May 10, 2010
    Date of Patent: March 6, 2012
    Assignee: Manitowoc Crane Companies, LLC
    Inventors: Robert J. Walker, Daniel L. Krajnik
  • Patent number: 8127951
    Abstract: A telescopic crane boom including a plurality of telescopically assembled tubular box sections including a base box section and an innermost box section having an open cross-section, and a boom head with a frame fixed to the outside circumference of the innermost box section. The head has a plurality of deflecting pulleys mounted on the frame, but no part extending inside the open cross section on the innermost base box section, whereby at least one additional box section can be inserted into the innermost box section in order to extend the boom.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: March 6, 2012
    Assignee: Terex-Demag GmbH
    Inventors: Frank Conrad, Jürgen Appel
  • Publication number: 20110225903
    Abstract: A telescopic mast system includes a telescopic mast comprising a plurality of telescopic mast sections and a drive mechanism for extending and retracting the telescopic mast sections. The drive mechanism includes a rigid chain having one end connected to a last one of the telescopic mast sections to move the telescopic mast sections and a plurality of guide plates cooperating with the telescopic mast sections to prevent buckling of the rigid chain.
    Type: Application
    Filed: March 22, 2010
    Publication date: September 22, 2011
    Inventors: Said Lounis, Kevin Dombrowski
  • Patent number: 7878349
    Abstract: The invention relates to a crane jib for a crane, having a longitudinal axis and an imaginary contour line that extends in a transversal plane relative to an axis of symmetry in an at least approximately mirror-symmetric manner. The contour line has an at least approximately arcuate section between a center that is equally interspaced from the first and second point of intersection on the axis of symmetry and the first point of intersection, and a first straight section is tangentially contiguous thereto in the direction of the second point of intersection. The imaginary extension of the first straight section in the direction of the second point of intersection intersects the axis of symmetry and forms an acute angle therewith.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: February 1, 2011
    Assignee: Palfinger AG
    Inventor: Eckhard Wimmer
  • Patent number: 7810793
    Abstract: A pulley actuator implements a motor to drive a screw and a guide rod to relatively expand or retract while utilizing one flexible rope and two pulleys to drive three telescoped tubes to relatively expand or retract move correspondingly. The pulley actuator has a simplified structure as compared with the known devices and is easy to fabricate.
    Type: Grant
    Filed: June 17, 2009
    Date of Patent: October 12, 2010
    Assignee: Hiwin Mikrosystem Corp.
    Inventors: Hsin-An Chiang, Jin-Cheng Lin
  • Patent number: 7774994
    Abstract: A mast section for a telescoping tower system is made by aligning press brake tools along the length of the metal sheet at spaced width locations and forming the corners of the tube. After forming of the last corner, an opening remains along the length of the tube. The press brake male tool axis is offset sufficiently to permit the tool to apply forming force to the last corner of the tube through the opening, and is sized to remove the tool from the opening. At least three mast sections are nested to form the tower system. Pulleys for a cable extension system are mounted near the upper and lower ends of a wall of an intermediate mast section, with one of the pulleys being oriented at an acute angle to the mast section wall to permit routing of the cable.
    Type: Grant
    Filed: June 9, 2008
    Date of Patent: August 17, 2010
    Inventor: Vincent P. Battaglia
  • Patent number: 7770869
    Abstract: A portable winch and method of use is shown. One advantage of winches shown includes an ability to lower a boom or boom sections into limited access exit pit for winching operations such as pipe bursting. Sectional boom designs shown provide the ability to easily raise and lower a boom large distances without the need for a single long boom. Selected winch designs shown include flexible inserts between the boom and the winch frame that help resist damage from unforeseen shifting of the device during operation. Designs and methods shown also include multiple pulleys on a boom end unit. Fasteners are shown that reduce build up of debris.
    Type: Grant
    Filed: May 11, 2007
    Date of Patent: August 10, 2010
    Assignee: TT Technologies, Inc.
    Inventor: Michael Tjader
  • Patent number: 7624967
    Abstract: An opposed-rope driven telescoping mast assembly includes a stationary support and a longitudinal mast comprising a longitudinal section joined to move relative to the stationary support. A drive assembly drives the longitudinal mast and includes a frame and a rotatable drum assembly mounted to the frame. A first rope is joined to the drum assembly and to the longitudinal mast to pull the longitudinal section in a first direction, while a second rope is joined to the drum assembly and to the longitudinal mast to pull the longitudinal section in a second direction. A sensor is operably coupled to the drive assembly to sense overload tension in the first rope or the second rope.
    Type: Grant
    Filed: April 19, 2007
    Date of Patent: December 1, 2009
    Assignee: Par Systems, Inc.
    Inventors: Gary R. Doebler, Thomas E. Jung, Albert J. Sturm, Jr.
  • Patent number: 7578402
    Abstract: A telescopic crane jib part has a top profiled part and a bottom profiled part joined together at joining points. The top profiled part and the bottom profiled part, on a side of the cross-section defining one-half of the cross section that is symmetrical with respect to the vertical mid-plane, each comprise, starting from the joining point of the profiled parts, at least a less pronounced outwardly curved segment and a more pronounced outwardly curved segment. Mutually adjoining end segments of the top and bottom profile parts meet at the joining points and extend outwards forming an angle.
    Type: Grant
    Filed: March 22, 2007
    Date of Patent: August 25, 2009
    Assignee: Manitowoc Crane Group France SAS
    Inventor: Franz Paschke
  • Publication number: 20090152227
    Abstract: Embodiments of a method and apparatus to lift payloads onto or into a vehicle are disclosed. Optimal embodiments of the device mount to a plurality of receiver hitches on a vehicle and combine optimally shaped and positioned structures, rigid and flexible linkage, and a pivoting tower to form a lifting hoist that is foldable, retractable, and can be recoverably installed. A prominent feature of the present invention is the ability to retract to a stored position that does not interfere with other features or functions of the host vehicle. This invention includes components that make it safe to use on un-level surfaces and other components and methods that enable the apparatus to be leveled to some extent before use.
    Type: Application
    Filed: March 8, 2008
    Publication date: June 18, 2009
    Inventors: Scott R. Thompson, Veronica Rodriquez
  • Patent number: 7506774
    Abstract: The present disclosure relates to a mobile crane comprising a superstructure having a revolving deck and at which a preferably telescopic boom is pivotably arranged around a pivot point, with a winch being additionally present for the hoist rope. In accordance with the present disclosure, the winch is arranged beneath the pivot point of the telescopic boom in the revolving deck.
    Type: Grant
    Filed: September 20, 2006
    Date of Patent: March 24, 2009
    Assignee: Liebherr-Werk Ehingen GmbH
    Inventor: Hans-Dieter Willim
  • Publication number: 20080237175
    Abstract: An extension assembly is provided that comprises spaced apart first and second extension beams, which are removeablely and independently affixed to a deck of a vessel. At least a portion the first and second extension beams extend beyond the transom of the vessel. The assembly further includes a modular traverse beam removeablely affixed to the first and second extension beams along a substantially perpendicular direction. The modular traverse beam is adapted to receive a work-over rig.
    Type: Application
    Filed: March 26, 2008
    Publication date: October 2, 2008
    Applicant: Remedial (Cyprus) PCL
    Inventors: Richard A. Altman, Michael D. Brown, Peter W. Nimmo
  • Publication number: 20080197095
    Abstract: A foldable portable hoist system includes a foldable portable hoist assembly and a mounting base. The foldable portable hoist assembly includes a substantially vertical support, an upper support arm, and a diagonal brace assembly. Hinged attachment of slidable collars on either end of the diagonal brace enables the foldable portable hoist assembly to be folded up for ease of transport and storage.
    Type: Application
    Filed: February 15, 2008
    Publication date: August 21, 2008
    Inventor: Michael Spitsbergen
  • Patent number: 7413093
    Abstract: An upper cross-sectional part for a telescopic part of a crane comprises a central flat cross-sectional element and, connected to the central flat cross-sectional element on each side thereof, a first outwardly curved cross-sectional element; a second flat cross-sectional element; a second outwardly curved cross-sectional element; and a third flat cross-sectional element.
    Type: Grant
    Filed: July 6, 2006
    Date of Patent: August 19, 2008
    Assignee: Grove U.S. LLC
    Inventors: Frank Richter, Enno Sieβels, Rocco Staatz, Franz Paschke
  • Patent number: 7309080
    Abstract: An extendable arm that extends from a police vehicle towards a pulled over vehicle. The arm allows for two-way communication or document transfer. The police officer can position the extendable arm while seated in the vehicle. The extendable arm includes a main shaft having first and second opposed ends. The first end is pivotally attached to the vehicle. A telescoping assembly extends from the second end. The assembly has a free end that extends and retracts away from and towards the main shaft. The free end can have an accessory mounted thereon, such as a two-way audio visual camera, or a container for the retention of driver's licenses. During operation the distal end can be positioned adjacent the driver's window or the police officer's window. The free end is retracted, and the shaft is placed in a stowed position adjacent the motor vehicle when not in use.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: December 18, 2007
    Inventor: Gary W. Mein
  • Patent number: 7213717
    Abstract: 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 supported by the guy stand, as well as erection mechanisms for raising the support stand out of folded transportation position into raised operating position. According to the invention, the telescopic boom is characterized by the fact that the erection mechanism consists of a tension rod that connects the guy stand with an internal telescopic section that can telescope outward opposite the section on which the guy stand is housed to pivot.
    Type: Grant
    Filed: December 10, 2003
    Date of Patent: May 8, 2007
    Assignee: Liebherr-Werk Ehingen GmbH
    Inventor: Hans-Dieter Willim
  • Patent number: 7172082
    Abstract: A mobile crane includes an under carriage, a superstructure that is rotatably mounted on the superstructure, and a main boom, which is composed of a base body and several telescopic lengths up to a predetermined maximum number, which slide into one another and can be extended from the base body. The main boom is mounted on the superstructure so that it can rotate about a horizontal axis and its inclination can be adjusted by means of a hydraulic tilting cylinder that is hinged on the superstructure and the base body. A maximum permissible weight is predefined for the main boom, as a result of a restriction on the permissible axle load of the mobile crane during road haulage. The crane is also provided with a lifting capacity increasing device, which significantly increases the lifting capacity of the main boom when the telescopic lengths are extended, in relation to the state without the lifting capacity increasing device.
    Type: Grant
    Filed: May 31, 2002
    Date of Patent: February 6, 2007
    Assignee: Terex-Demag GmbH & Co. KG
    Inventors: Michael Irsch, Alexander Knecht, Jens Fery
  • Patent number: 7137518
    Abstract: A telescopic crane, includes a substructure, a superstructure rotatably mounted onto the substructure, a counterweight and a telescoping boom structure which includes a main boom slewable about a luffing plane. The main boom has a boom base and at least one telescope section received in the boom base and displaceable between retracted and extended positions. At least one guy support is mounted to the boom structure and connected to a guy rope which extends substantially longitudinally in the direction of the boom structure. The guy support is oriented with respect to the luffing plane at an inclination which is so selected that a lateral load acting on the boom structure is partially or entirely received by the guying.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: November 21, 2006
    Assignee: Terex-Demag GmbH & Co. KG
    Inventors: Michael Irsch, Conrad Frank, Jens Fery, Walter Zimmer, Walter Stowasser, Oliver Fries, Roland Kuhn, Markus Marx
  • Patent number: 7048257
    Abstract: A portable winch suitable for use in underground pipe bursting and replacement includes a mounting frame positionable at a top opening of a hole such as a receiving pit or manhole. A telescoping mast having a series of nested, top and bottom mast sections is mounted on the frame. A powered winch unit, also mounted on the frame, includes a drive unit and a cable. A guide assembly includes a sheave that guides the cable from the drive unit to the bottom mast section. Suitable means are connected to the frame for mechanically raising and lowering the mast into and out of the hole. As such, the mast according to the invention does not require assembly or disassembly at the beginning and end of each job. The mechanical means for raising and lowering the mast is preferably the powered winch unit.
    Type: Grant
    Filed: September 19, 2003
    Date of Patent: May 23, 2006
    Assignee: Earth Tool Company, L.L.C.
    Inventors: Steven W. Wentworth, Paul W. Hau
  • Patent number: 7004417
    Abstract: This tape cartridge is provided with a tape reel being rotatable and having a reel teeth portion; and a brake-locking member having a brake teeth portion in which mating operation and mate-releasing operation can be performed with respect to the reel teeth portion. The reel teeth portion and the brake teeth portion, each has plural teeth. Each of the teeth has a taper portion being inclined toward both sides from a tip part of the taper portion and a vertical portion extending in a substantially vertical manner from both end terminals of the taper portion to a base portion. At the time of the mating, the tip part is contacted with a bottom surface of the base portion at the side of the opposite teeth, and the vertical portion is opposed to the vertical portion at the side of the opposite teeth. At the time of mating, the vertical portions of the teeth are mutually contacted and the mating state is hard to become unfitted.
    Type: Grant
    Filed: July 7, 2003
    Date of Patent: February 28, 2006
    Assignee: TDK Corporation
    Inventors: Takateru Satoh, Akio Momoi, Hiroki Suzuki
  • Patent number: 6978907
    Abstract: A telescopic jib for a crane, such as a vehicular crane, comprises an upper profile part and a lower profile part joined together. The lower profile part consists of several shell segments, each having an outwardly curved shape, and the upper profile part comprises several outwardly curved shell segments abutting each other at an obtuse angle.
    Type: Grant
    Filed: December 12, 2002
    Date of Patent: December 27, 2005
    Assignee: Grove U.S. LLC
    Inventor: Franz Paschke
  • Patent number: 6928774
    Abstract: The invention relates to a covering body for masts of construction cranes, electricity lines, or the like with an outer covering which is designed to partially or totally encase a mast in the direction of extension and/or peripheral direction and which furthermore has at least one rigid inner support, with which the outer covering can be arranged to be spaced at least partially at a distance from the mast. Finally, a fastening device for fastening the inner support to the mast is provided. Such a covering body according to the invention is further developed in that the inner support, by means of the fastening device, can be connected to the mast rotatably adjustable in the peripheral direction and/or adjustable in the direction of extension and that a device for active and/or passive variation of position and/or geometry of the outer covering is provided.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: August 16, 2005
    Assignees: blowUP media GmbH, Streif Baulogistik GmbH
    Inventors: Markus Weiss, Frank Klein
  • Patent number: 6881021
    Abstract: 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 are mounted to pivot about a horizontal pivot axle (5) in the storage rack (6) and which can be displaced reciprocally by means of a servo-drive (19) is described. In order to create advantageous structural conditions it is proposed that the longitudinal axles of the box girders (2, 3) form an upwards arched arc of a circle (4) which runs concentrically to a common axis parallel to the pivot axis (5).
    Type: Grant
    Filed: May 10, 2000
    Date of Patent: April 19, 2005
    Inventors: Udo Winter, Johann Schabelreiter, Werner Martin
  • Patent number: 6842119
    Abstract: A method of detecting damage to a structural member which is part of a working arm of a working apparatus, which arm is moveable relative to a body of the apparatus by an actuator. In use, the arm carries a load at another end thereof. The method including the steps of locating in or on the structural member in a position which is liable to damage, at least one filament. So long as the filament remains undamaged, a signal is transmitted along the length of the filament. In the event of an interruption of the transmitted signal, a fault signal is generated. The fault signal is used to disable operation of the actuator. The method is particularly useful for working arms made from light weight composite materials in the form of a matrix of fibers in a resin material which is susceptible to impact damage which may not be visible.
    Type: Grant
    Filed: April 10, 2003
    Date of Patent: January 11, 2005
    Assignee: J. C. Bamford Excavators, Limited
    Inventors: Andrew David Nurse, Lee Edward Jan Styger
  • Publication number: 20040131459
    Abstract: A slide arm for a work implement is provided, which is simply structured to obtain improved assembling precision thereby ensuring smooth operation. To this end, the slide arm is such that a plurality of tubular structural bodies (i.e., outer and inner tubes), each of which is formed by bending a one-piece plate into a shape having a substantially triangular cross-section and circular vertex portions, are telescoped one within the other with sliding members (i.e., plain bearing units and slide block pieces) interposed between them at the vertex portions and such that a sliding mechanism is disposed for sliding the tubular structural bodies.
    Type: Application
    Filed: June 16, 2003
    Publication date: July 8, 2004
    Inventors: Nobuyoshi Masumoto, Tatsushi Itoh, Toshihiko Sakashita
  • Publication number: 20040104192
    Abstract: The invention relates to a telescopic boom for a vehicle crane, comprising a base housing (1), which may be mounted to an upper construction on the vehicle crane in a horizontal joint (2), at the lower end thereof and has further horizontal joint (3), to which a tipping cylinder, for inclination of the telescopic boom, which may be connected to the upper construction, may be connected and several telescopic stages (4-11), running either in each other or in the base housing (1), all of which may be telescoped by means of a telescoping device (12) directly connected thereto and which may be locked relative to each other in the telescoped position. One of the telescoping stages (4-11) is embodied from two part pieces (4a, b) may be locked together by stage (4), and both part pieces (4a, b) are pivoted together by means of a hinge.
    Type: Application
    Filed: September 26, 2003
    Publication date: June 3, 2004
    Inventors: Walter Stowasser, Klaus Conrad, Oliver Fries, Werner Michaeli
  • Publication number: 20040060887
    Abstract: The within invention concerns a telescopic boom of a crane with a pivot section, telescoping sections that telescope out of the pivot section, and bracing that has at least one guy support housed on one of the sections and a guy cable supported on one of these guy supports. According to the invention, the telescopic crane is characterized by the presence of a guy cable running from the guy support and a cable lock that can be locked to said guy cable, in which the cable lock can be moved by means of an actuator, particularly an hydraulic cylinder, in the longitudinal direction of the guy and the guy cable can be pre-stressed by moving the cable lock.
    Type: Application
    Filed: June 5, 2003
    Publication date: April 1, 2004
    Applicant: Liebherr-Werk Ehingen GmbH
    Inventor: Hans-Dieter Willim
  • Patent number: 6586084
    Abstract: At least one section of a jib of a crane, such as a mobile crane, includes a composite cross-section incorporating a layer of steel covered by one or more fiber composite layers. In a preferred embodiment, more than one fiber composite layer is included and the respective fiber layers are disposed in a criss-cross manner with respect to each other to enhance the overall strength of the telescopic part. Also, in a preferred embodiment the steel layer of the composite is on the interior of the telescopic part for minimizing thermal stresses due to temperature changes caused by sun loads. In another preferred embodiment, the composite fiber layers are disposed only in the zone of the cross-section of the telescopic part, which is subjected to tensile forces during use.
    Type: Grant
    Filed: July 2, 1999
    Date of Patent: July 1, 2003
    Assignee: Grove U.S. LLC
    Inventors: Franz Paschke, Kurt Vohdin
  • Patent number: 6575318
    Abstract: 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 can be moved out of a starting position into in each case at least one extended position is provided with a drive for moving at least one driver bolt of a locking unit into and out of a section receptive driver bolt opening, and for moving a coupling device for displacement of at least one locking bolt into and out of a locking bolt receptive opening, the drive being arranged fixedly on the box frame of the jib, there being a mechanical drive connection between the drive and the locking unit.
    Type: Grant
    Filed: December 17, 2001
    Date of Patent: June 10, 2003
    Assignee: Atecs Mannesmann AG
    Inventors: Walter Stowasser, Klaus Meissner, Hans Brenner, Klaus Conrad, Thomas Krebs, Michael Irsch, Jens Fery
  • Patent number: 6561368
    Abstract: A telescoping tube assembly includes a frame and a first longitudinal tube section mounted on the frame. A second longitudinal tube section is disposed within the first longitudinal tube section and adapted for telescoping motion into and out of the first longitudinal tube section. The telescoping tube assembly includes a cabling system that includes a top pulley assembly and a bottom pulley assembly, the bottom pulley assembly adapted for movement in response to the telescoping motion of the second longitudinal tube section. One or more cables extend from the remote end of the innermost longitudinal tube section and traverse the top pulley assembly, the bottom pulley assembly and are fixed relative to the frame.
    Type: Grant
    Filed: May 1, 2000
    Date of Patent: May 13, 2003
    Assignee: PaR Systems, Inc.
    Inventors: Albert J. Sturm, Jr., Mark W. Benoit