Relatively Moving Sections Patents (Class 52/117)
  • Patent number: 9797196
    Abstract: An automated rig apparatus for drilling or servicing a well is provided. The apparatus can include a motor vehicle having a frame, and a hinged derrick mast pivotally attached to the frame. The apparatus can further include a rack disposed in the mast and a carriage assembly with pinion motors configured to travel up and down the rack when the mast is raised to a vertical position. A tool carrier configured to receive a top drive unit or a power swivel unit can be attached to the carriage assembly. The apparatus can further include a movable platform and an operators cab configured to be moved to a desired position relative to the derrick mast when the mast is raised to a vertical position. The apparatus can further include a hydraulic drive assembly to operate the apparatus, and a mud pump and manifold for pumping drilling mud.
    Type: Grant
    Filed: December 19, 2014
    Date of Patent: October 24, 2017
    Assignee: PROSTAR MANUFACTURING INC.
    Inventors: Mark Charles Taggart, Douglas Andrew Hunter, Daniel Harvard Kusler, Colin Reynold Knapp
  • Patent number: 9556636
    Abstract: A method and apparatus for constructing a tower, where the apparatus may include a structure including a foundation including a plurality of hydraulic cylinders; a truss tower located on the foundation and configured to support a tower built on the foundation; and a controller configured to control extension and retraction of the hydraulic cylinders.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: January 31, 2017
    Assignee: TINDALL CORPORATION
    Inventor: Bryant A. Zavitz
  • Patent number: 8992158
    Abstract: A reinforcement device for a load bearing structure is disclosed. The reinforcement device may include a tubular wall including a first end, a second end, a throat disposed between the first end and the second end, and a curved portion disposed between the throat and each of the first end and the second end. The tubular wall may also include a first dimension at the throat and a second dimension at each of the first and second ends, the first dimension being smaller than the second dimension.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: March 31, 2015
    Assignee: Caterpillar Inc.
    Inventors: Steven Springer, Jason Musheno
  • Patent number: 8991107
    Abstract: A reclosable mast (2) for drilling rig includes two opposed latticed structures (22), constrained at one end to the base structure (10) placed in the drilling site ā€œPā€ and to each other, defining side faces (2b) of the mast (2). U-shaped structures, each include a rear bar (40), adapted to get compressed when closing the mast (2), and two side shoulders (41) parallel to each other and perpendicular to the an associated bar (40). The U-shaped structures are arranged at preset intervals between the two latticed structures (22), the rear bars defining the rear face or back (2a) of the mast (2). The mast (2) includes a diagonal members (3) located on the rear face 2a of the mast and constrained, between two superimposed U-shaped structures, the diagonal members (3) being adapted to split into at least two portions; reducing their longitudinal extension, and to allow reducing the dimension.
    Type: Grant
    Filed: October 4, 2012
    Date of Patent: March 31, 2015
    Assignee: Drillmec S.p.A.
    Inventor: Stefano Ferrari
  • Publication number: 20150075089
    Abstract: An antenna tower is provided having one or more antennae at the removed end thereof, which tower is configured for ease of maintenance of the antenna by a serviceman standing on the ground and servicing the antenna. Applicants' antenna tower includes a fixed vertical base or mast tube, fixed to the ground and having a removed end. At or near the removed end of the base tube, a swing tube is pivotally attached. The swing tube has a first end removably coupled to a near end of the base tube, and a removed end extending beyond the removed end of the base tube. Attached to the removed end of the swing tube is a pivotally mounted configured member or pivot tube. The pivotally mounted elongated member receives an antenna thereupon. The pivot tube is removably coupled to the swing tube to allow the pivot tube to rotate.
    Type: Application
    Filed: May 1, 2014
    Publication date: March 19, 2015
    Applicant: Wilbur L. Anderson, Inc. d/b/a Western Towers
    Inventors: Charles Anderson, Daniel Anderson, Grady Roe
  • Patent number: 8959874
    Abstract: A portable drilling rig apparatus includes a rig floor having a pedestal structure thereon, the pedestal structure comprising a lower pivot point and a lower attachment point and wherein the pedestal structure is configured to be rotated to a vertical position about the lower pivot point. The drilling rig further includes a mast structure having a mast pivot point at a lower end of the mast structure wherein the mast pivot point is configured to be pinned to an upper pivot point of the pedestal structure.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: February 24, 2015
    Assignee: International Drilling Equipment Company, LLC
    Inventor: Philip Wasterval
  • Patent number: 8910432
    Abstract: Embodiments of the invention generally relate a method and apparatus for a tower structure. In one embodiment, the tower structure comprises a first base plate comprising a first hinge device, a first structural section having a first side and a second side, the first structural section coupled to a second base plate comprising a second hinge device, a second structural section coupled to the first structural section, and an aerial component coupled to the second structural section, wherein the first structural section is rotatable relative to the first base plate in a first rotational axis, the second structural section is rotatable relative to the first structural section in a second rotational axis, and at least a portion of the second structural section is received in a channel formed in the first side of the first structural section when the first structural section and the second structural section are substantially parallel.
    Type: Grant
    Filed: April 8, 2011
    Date of Patent: December 16, 2014
    Assignee: Electro Mechanical Industries, Inc.
    Inventors: Fallon M. Egan, Claudio J. Gutierrez, Christoval Sanchez, Patrick M. Weisbrod
  • Patent number: 8904716
    Abstract: Disclosed herein is a bi-directionally raisable drilling rig mast system that includes a drilling rig mast having a bi-directional mast erection connection, a first erection connection positioned proximate a first side of a rig substructure, and a second erection connection positioned proximate a second side of the rig substructure, the second side being at an opposite side of the rig substructure from the first side. The system further includes at least one mast erection apparatus having an upper end that is adapted to be pivotably attached to the bi-directional mast erection connection and a lower end that is adapted to be pivotably attached to the first erection connection for erecting the drilling rig mast from the first side of the substructure, the lower end being further adapted to be pivotably attached to the second erection connection for erecting the drilling rig mast from the second side of the substructure.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: December 9, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Robert Benjamin Donnally, Chunqiao Ren, Xilin Liu
  • Patent number: 8863449
    Abstract: Disclosed herein is a raisable substructure of a drilling rig that includes first and second substructure boxes. The first and second substructure boxes of the raisable substructure each include, among other things an upper box and a lower box, wherein each of the upper boxes is adapted to be raised above a respective lower box. The disclosed raisable substructure also includes a movable center floor section that is adapted to be supported by the upper boxes of the first and second substructure boxes, wherein the movable center floor section is further adapted to be slidably moved between the upper boxes during assembly of the drilling rig.
    Type: Grant
    Filed: April 23, 2013
    Date of Patent: October 21, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Robert Benjamin Donnally, Chunqiao Ren, Xilin Liu
  • Patent number: 8863450
    Abstract: A tilt tower and pipe auger anchor assembly comprising a tilt tower having a mast and a swing tube and a coax cable engaging both the mast and the swing tube, the mast has a near end, the near end has a mast flange plate with fastener holes therethrough. A pipe auger anchor has walls defining a generally hollow elongated body having a near end and a removed end, the near end including a pipe auger anchor flange plate mateable with the mast flange plate. The pipe auger anchor flange plate has fastener openings therein and fixedly attached to the near end perpendicular to the longitudinal axis of the hollow elongated body and an auger at the removed end. The auger provides a penetration force when the body is rotated and the auger is engaged with the ground.
    Type: Grant
    Filed: April 25, 2013
    Date of Patent: October 21, 2014
    Inventors: Charles Anderson, Joshua Anderson
  • Publication number: 20140271076
    Abstract: A boom assembly includes a lower boom, an intermediate member, an upper boom, an intermediate link, and an actuator coupled between the intermediate member and the upper boom. The lower boom includes an intermediate member end and a base end, and the base end is configured to be pivotally coupled to a lift device. The intermediate member is pivotally coupled to the intermediate member end of the lower boom. The upper boom includes a first end pivotally coupled to the intermediate member, and the intermediate link is coupled directly between the upper boom and the lower boom. The intermediate member includes a base portion positioned to carry structural loading and a weighted portion positioned to provide counterweight for the lift device.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Inventor: Jacob J. Perron
  • Patent number: 8813436
    Abstract: Generally, the subject matter disclosed herein is directed to, among other things, systems and methods for making up pivotably pinned structural connections that may be used for erecting drilling rig masts. One illustrative system includes a drilling rig mast having at least one support leg, a drilling rig mast support having at least one mast support shoe, and a pinned connection between the at least one support leg and the at least one mast support shoe. Additionally, the pinned connection of the disclosed system includes a pin, an oversized hole having at least a first hole portion, and a removable plug that is adapted to be inserted into the oversized hole, wherein the removable plug has at least a first plug surface portion, and wherein the first hole portion and the first plug surface portion define at least part of a pin hole that is adapted to receive the pin.
    Type: Grant
    Filed: August 31, 2011
    Date of Patent: August 26, 2014
    Assignee: National Oilwell Varco, L.P.
    Inventors: Robert B. Donnally, Liu Xi Lin, Guo Hou
  • Patent number: 8800219
    Abstract: An antenna tower is provided having one or more antennae at the removed end thereof, which tower is configured for ease of maintenance of the antenna by a serviceman standing on the ground and servicing the antenna. Applicants' antenna tower includes a fixed vertical base or mast tube, fixed to the ground and having a removed end. At or near the removed end of the base tube, a swing tube is pivotally attached. The swing tube has a first end removably coupled to a near end of the base tube, and a removed end extending beyond the removed end of the base tube. Attached to the removed end of the swing tube is a pivotally mounted configured member or pivot tube. The pivotally mounted elongated member receives an antenna thereupon. The pivot tube is removably coupled to the swing tube to allow the pivot tube to rotate.
    Type: Grant
    Filed: May 17, 2012
    Date of Patent: August 12, 2014
    Assignee: Wilbur L. Anderson, Inc.
    Inventors: Charles Anderson, Daniel Anderson, Grady Roe
  • Patent number: 8720128
    Abstract: A method to disassemble a mast assembly having a substructure including a first and second section, a first and a second cylinder, and a lower mast section. The method includes the steps of disengaging a pair of front mast legs of the lower mast section from a pair of front leg supports. The pair of front leg supports are moved from an operational to a transport position. The lower mast section is lowered from a vertical to a horizontal position by retracting the first cylinder and the second cylinder. A mast center spreader is thereafter removed from the lower mast section. A center drill floor section is removed from between the first substructure section and the second substructure section so that a combination of the first substructure section, the first cylinder and a portion of the lower mast and a combination of the second substructure section, the second cylinder and a portion of the lower mast may be transported.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: May 13, 2014
    Assignee: Woolslayer Companies, Inc.
    Inventor: Dewayne G. Vogt
  • Patent number: 8671626
    Abstract: A drilling rig assembly having a longitudinal axis and comprising a drilling rig skid and a derrick assembly having a derrick assembly pivot axis and being adapted to move relative to the drilling rig skid. The derrick assembly comprises a pair of derrick masts disposed on opposite sides of the longitudinal axis and comprising a rack, and a carriage assembly being substantially disposed between the pair of derrick masts, being adapted to move along the pair of derrick masts and comprising a pinion. The drilling rig assembly also comprises a means for moving the derrick assembly relative to the drilling rig skid, a pipe loader assembly having a pipe loader assembly pivot axis, and a means for moving the pipe loader assembly relative to the drilling rig skid. The derrick assembly pivot axis and the pipe loader assembly pivot axis are co-axial.
    Type: Grant
    Filed: July 10, 2012
    Date of Patent: March 18, 2014
    Assignee: Astec Industries, Inc.
    Inventors: Dan Marty, Eddie Stuckert, Kalpeshkumar Patel
  • Patent number: 8661744
    Abstract: The present invention concerns a telescopic mast which at least includes one or more telescoping joints, where a telescoping joint is formed of two telescoping sections dimensioned so that one section can be moved into another section, where between each of the two adjacent telescoping sections in a telescoping joint there is provided at least one actuator urging the adjacent telescoping sections away from each other, where these actuators are disposed internally of the telescoping joints and offset at the internal periphery. By disposing actuators offset at the inner periphery of the telescoping sections, several advantages are achieved. The actuators are provided at a protected location, and the actuators may be designed with lengths that overlap each other when the telescopic mast is collapsed.
    Type: Grant
    Filed: April 15, 2008
    Date of Patent: March 4, 2014
    Assignee: Falck Schmidt Defence Systems A/S
    Inventor: Lars Keller
  • Publication number: 20130305632
    Abstract: A system and method for erecting a drilling rig is disclosed herein. A system for erecting a drilling rig can comprise a substructure comprising a base platform. Additionally, the rig can comprise a modular rig mast comprising a plurality of sections, the plurality of sections comprising a first section, and the rig mast mountable to the substructure. Lastly, the rig can comprise a first one or more lifting means, the one or more lifting means each having a first end connected to the rig mast and a second end connected to the structure, the lifting means capable of lifting the rig mast from a horizontal position to a vertical position.
    Type: Application
    Filed: May 18, 2013
    Publication date: November 21, 2013
    Inventors: Phillip Rivera, Sr., Phillip Rivera, Jr.
  • Publication number: 20130291452
    Abstract: Disclosed herein is a bi-directionally raisable drilling rig mast system that includes a drilling rig mast having a bi-directional mast erection connection, a first erection connection positioned proximate a first side of a rig substructure, and a second erection connection positioned proximate a second side of the rig substructure, the second side being at an opposite side of the rig substructure from the first side. The system further includes at least one mast erection apparatus having an upper end that is adapted to be pivotably attached to the bi-directional mast erection connection and a lower end that is adapted to be pivotably attached to the first erection connection for erecting the drilling rig mast from the first side of the substructure, the lower end being further adapted to be pivotably attached to the second erection connection for erecting the drilling rig mast from the second side of the substructure.
    Type: Application
    Filed: April 23, 2013
    Publication date: November 7, 2013
    Inventors: Robert Benjamin Donnally, Chunqiao Ren, Xilin Liu
  • Patent number: 8555563
    Abstract: A pole installation system includes a pole base and pole member releasably connected to the pole base. Mover structure is connected to both the pole base and the pole member to raise or lower the pole member while it is pivotally connected to the pole base to install or disinstall the pole member.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: October 15, 2013
    Inventor: Thomas K. Wong
  • Publication number: 20130180185
    Abstract: A reclosable mast (2) for drilling rig includes two opposed latticed structures (22), constrained at one end to the base structure (10) placed in the drilling site ā€œPā€ and to each other, defining side faces (2b) of the mast (2). U-shaped structures, each include a rear bar (40), adapted to get compressed when closing the mast (2), and two side shoulders (41) parallel to each other and perpendicular to the an associated bar (40). The U-shaped structures are arranged at preset intervals between the two latticed structures (22), the rear bars defining the rear face or back (2a) of the mast (2). The mast (2) includes a diagonal members (3) located on the rear face 2a of the mast and constrained, between two superimposed U-shaped structures, the diagonal members (3) being adapted to split into at least two portions; reducing their longitudinal extension, and to allow reducing the dimension.
    Type: Application
    Filed: October 4, 2012
    Publication date: July 18, 2013
    Applicant: DRILLMEC SPA
    Inventor: Drillmec SpA
  • Patent number: 8468753
    Abstract: Systems and methods for erecting a drilling rig. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: June 25, 2013
    Assignee: National Oilwell Varco L.P.
    Inventors: Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Xi Lin Liu, Hui Chun Sheng, Yan Yu
  • Patent number: 8381460
    Abstract: An extendable beam has compact slideable segments with angular extensions connected by cables which are tensioned to strengthen the beam when the beam is extended by sliding the segments. Restraining parts slide along tracks on neighboring segments. Short fixed length cables are connected between tips of extensions and diagonally between extension tips and segments are tensioned when hinged extensions are deployed. Other cables are paid out and tensioned, connecting tips of extensions on adjacent segments. Internal pulleys and beam extension cables simultaneously slide adjacent segments to extend the beam. An external crane and lock extend the beam serially.
    Type: Grant
    Filed: February 27, 2008
    Date of Patent: February 26, 2013
    Inventor: Patrick P. McDermott
  • Publication number: 20120291368
    Abstract: An antenna tower is provided having one or more antennae at the removed end thereof, which tower is configured for ease of maintenance of the antenna by a serviceman standing on the ground and servicing the antenna. Applicants' antenna tower includes a fixed vertical base or mast tube, fixed to the ground and having a removed end. At or near the removed end of the base tube, a swing tube is pivotally attached. The swing tube has a first end removably coupled to a near end of the base tube, and a removed end extending beyond the removed end of the base tube. Attached to the removed end of the swing tube is a pivotally mounted configured member or pivot tube. The pivotally mounted elongated member receives an antenna thereupon. The pivot tube is removably coupled to the swing tube to allow the pivot tube to rotate.
    Type: Application
    Filed: May 17, 2012
    Publication date: November 22, 2012
    Applicant: Wilbur L. Anderson, Inc. d/b/a Western Towers
    Inventors: Charles Anderson, Daniel Anderson, Grady Roe
  • Patent number: 8302365
    Abstract: A partially self-erecting wind turbine tower and a method for carrying out the assembly thereof. A central extendable pylon is provided. This is placed in an upright position, with its base on a temporary foundation. A plurality of legs is then attached to the extendable pylon. The upper extreme of each of the plurality of legs is temporarily attached to the upper extreme of the extendable pylon. With the pylon and legs thus secured, a nacelle is attached to the upper extreme of the extendable pylon. A hub with attached blades is then affixed to the nacelle. The extendable pylon is then forced upward through the collar to extend the height of the assembly.
    Type: Grant
    Filed: February 25, 2010
    Date of Patent: November 6, 2012
    Inventor: Anthony F. Gee
  • Patent number: 8250816
    Abstract: A method for installing rig structure (e.g. cabin, house, a doghouse) on a drilling rig, the method including: connecting support apparatus to a substructure of a drilling rig, supporting a drilling floor; moving a movement apparatus supporting a rig structure to position it adjacent the support apparatus, by moving movement apparatus on ground adjacent the substructure, moving the support apparatus into a connecting orientation with respect to the structure; connecting raising apparatus to the structure, the raising apparatus connected to the support apparatus; raising the structure up to the drill floor with the raising apparatus; and securing the structure to the support apparatus. This abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure and is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims, 37 C.F.R. 1.72(b).
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: August 28, 2012
    Assignee: National Oilwell Varco L.P.
    Inventors: Robert Benjamin Donnally, Chunqiao Ren, Stuart Arthur Lyall McCurdy, Xi Lin Liui, Hui Chun Sheng, Yan Yu, He Hui Chen
  • Patent number: 8250826
    Abstract: A hingeable derrick, comprising an upper structure with a first face and a second face opposite the first face; a lower structure with a first face and a second face opposite the first face; a hinge connecting the second face of the upper structure to the second face of the lower structure; and at least one hydraulic cylinder, where each hydraulic cylinder has an upper end attached to the upper structure. The upper structure is located directly above the lower structure in an upright position when the hydraulic cylinder is retracted, and the upper structure may pivot at the hinge in the direction of the second face into a folded position, with the descent controlled by winch lines.
    Type: Grant
    Filed: April 14, 2010
    Date of Patent: August 28, 2012
    Assignee: Woolslayer Companies, Inc.
    Inventor: Dewayne G. Vogt
  • Patent number: 8234823
    Abstract: An extendible mast includes at least three columns having a plurality of column sections that telescopically nest one inside another. A base plate is connected to each column, and each of a plurality of brackets is also connected to each column. The plurality of brackets are positioned along the length of the mast when extended.
    Type: Grant
    Filed: July 8, 2009
    Date of Patent: August 7, 2012
    Inventors: Clifton D. McClure, Jonathan M. Lance, Sr.
  • Publication number: 20120167485
    Abstract: The present invention discloses a high-capacity drilling rig system that includes novel design features that alone and more particularly in combination facilitate a fast rig-up and rig-down with a single set of raising cylinders and maintains transportability features. In particular, a transport trailer is disclosed having a first support member and a drive member which align the lower mast portion with inclined rig floor ramps and translate the lower mast legs up the ramps and into alignment for connection. A pair of wing brackets is pivotally deployed from within the lower mast width for connection to the raising cylinder for raising the mast from a horizontal position into a vertical position. A cantilever is pivotally deployed from beneath the rig floor to a position above it for connection to the raising cylinder for raising the substructure from a collapsed position into the erect position.
    Type: Application
    Filed: December 22, 2011
    Publication date: July 5, 2012
    Applicant: T&T ENGINEERING SERVICES, INC.
    Inventors: Mark W. Trevithick, Darrell E. Jamison, Gus E. Rodriguez, Keith J. Orgeron
  • Patent number: 8146794
    Abstract: The present invention provides a boom and arm member of a construction machine excellent in weld zone fatigue strength and a method of improvement of its fatigue strength, that is, a boom and arm member of a construction machine superior in weld zone fatigue strength, the boom and arm member of a construction machine characterized in that toes of full penetrated weld zones of the boom and arm member have vibration strike marks, and a method of improvement of its fatigue strength. Preferably, the residual stress of the bottom surface of the vibration strike marks is a 10 MPa or higher compressive residual stress.
    Type: Grant
    Filed: July 14, 2005
    Date of Patent: April 3, 2012
    Assignee: Nippon Steel Corporation
    Inventors: Tetsuro Nose, Kiyotaka Nakashima
  • Patent number: 7963084
    Abstract: A synchronously deployable tetrahedral truss beam with orthogonally-hinged diagonals, having uniquely-connected transverse members and folding chordal members, where a plurality of bays can extend and retract in a coordinated manner without need for a deployment canister mechanism or other assembling means. The triangular cross-section truss can be adapted to deploy pre-attached panels or nodally-attached payload components. These triangular beams can be mounted side-by-side with a common chord to create a synchronously deployable trapezoidal cross-section beam or space-frame. Both the triangular and trapezoidal configurations can be adapted to deploy with a prescribed curvature of the longitudinal axis, and form perimeter trusses which can be post-tensioned for maximum structural performance.
    Type: Grant
    Filed: August 29, 2006
    Date of Patent: June 21, 2011
    Inventors: Donald Merrifield, James W. Fletcher
  • Patent number: 7958693
    Abstract: In a boom 15 for a working machine 10 attached to an upper rotational body 30 supported on a center of an upper portion of a crawler-type traveling device 40 to be transversely rotatable, the boom 15 includes, as portions cast by integral molding, a boom support point part 16, a boom cylinder rod support point part 18, and an arm support point part 19, and is configured so that the boom support point part 16 is connected to the boom cylinder rod support point part 18 by a general-purpose first rectangular pipe 61, and so that the boom cylinder rod support point part 18 is connected to the arm support point part 19 by a general-purpose second rectangular pipe 62.
    Type: Grant
    Filed: August 25, 2006
    Date of Patent: June 14, 2011
    Assignee: Yanmar Co., Ltd.
    Inventors: Yasuyuki Oyamada, Keiichi Nishihara, Takahiro Ikeda, Takafumi Nobayashi, Masao Nagata, Saizou Kondou, Masami Miyanishi
  • Patent number: 7500334
    Abstract: An access tower has two mutually spaced side parts extending from a base part to the top part; and inclined cross parts each extending from one side part to the other. The cross parts are arranged one above another and inclined in opposite senses. The cross parts are rigid and are connected to the side parts. The lower one of two successive oppositely inclined cross parts has its upper end connected to an articulation node to which the lower end of the upper one of said two successive oppositely inclined cross parts is connected. A section of the side part opposite said articulation node, which section extends between the upper end of said upper cross part and the lower end of said lower cross part, is collapsible so that said upper cross part together with the portion of the tower above it can be lowered into a position in which said upper cross part extends substantially parallel to said lower cross part. A releasable locking device is provided to prevent collapse of said collapsible section.
    Type: Grant
    Filed: May 19, 2006
    Date of Patent: March 10, 2009
    Inventor: John Timothy Stevens
  • Patent number: 7299589
    Abstract: A telescoping boom mechanism for deploying an expandable structure, such a hoop-supported antenna, comprises a plurality of concentrically nestable tubular boom sections, that are mutually engageable with one another by way of roller assemblies and helical tracks formed thereon. The tubular boom sections are caused to telescopically expand or retract along a deployment axis by means of a rotational drive motor coupled to an outermost one of the tubular boom sections.
    Type: Grant
    Filed: October 22, 2003
    Date of Patent: November 27, 2007
    Assignee: Harris Corporation
    Inventors: Thomas Bruce Campbell, Rick Harless
  • Patent number: 7231741
    Abstract: A mobile cellular telephone tower comprises a self-propelled base and a tower connected to the base. The tower includes a base segment and at least a first extendable segment operatively connected to a second extendable segment. A winch is connected to the base, and a first cable is connected between the base segment and the first extendable segment to extend the first extendable segment. A second cable is connected between the winch and the second extendable segment to retract the second extendable segment. Cellular telephone network testing equipment mounted on the tower.
    Type: Grant
    Filed: December 5, 2001
    Date of Patent: June 19, 2007
    Assignee: SBC Technology Resources, Inc.
    Inventor: Rodney Earl Norwood
  • Patent number: 7165929
    Abstract: In the design of load bearing members for use in work machines, it is oftentimes beneficial to minimize the weight of such structures which, in turn, may allow for increased payloads and decreased cycle times of the work machine. A load bearing arrangement for use with a work machine of the type having a platform is provided. The load bearing arrangement comprises a plurality of pieces connectable to form a member structured and arranged for pivotable attachment to the platform. A weldment connects at least two of the pieces where at least one weldment is simulated for effects of heat on at least one of the pieces subject to the weldment.
    Type: Grant
    Filed: December 20, 2001
    Date of Patent: January 23, 2007
    Assignee: Caterpillar Inc
    Inventors: Brian J. Janes, Christy L. Lee, Dirk J. Schreuder, Charles F. Sieck
  • Patent number: 6951082
    Abstract: 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 mast. The lower part may be secured to the upper part when the rig is in operational position, and is movable to allow the upper mast to move into a telescoped position within the lower mast. The rig is readied for transport by disconnecting upper and lower parts of a torque carrier, moving the lower torque carrier laterally within the lower mast to allow the upper mast to telescope within the lower mast; and telescoping the upper mast within the lower mast.
    Type: Grant
    Filed: January 3, 2003
    Date of Patent: October 4, 2005
    Assignee: Allan R. Nelson Engineering (1977)
    Inventors: Allan R. Nelson, Mark E. Mattock
  • Patent number: 6810937
    Abstract: There is disclosed a system for suspending a rigid panel in an opening formed in a barrier structure. The system comprises a sleeve of flexible material having an anchor portion attachable to the perimeter of the opening and a grip portion opposite the anchor portion. The grip portion is contoured so as to form a channel disposed between an anterior extension and a posterior extension of the grip portion. Each of the anterior extension and the posterior extension comprises a fold of the flexible material having an apex at its inner end. A first elongated tensioning member received within the apex of the anterior extension and a second elongated tensioning member received within the apex of the posterior extension. The edges of the panel are received within the channel and the first and second elongated tensioners may be made sufficiently taut to prevent easy removal of the panel from the channel. Also disclosed is a method of suspending a rigid panel in a barrier structure employing structure as disclosed.
    Type: Grant
    Filed: April 15, 2003
    Date of Patent: November 2, 2004
    Inventor: James R. Stahl
  • Patent number: 6594960
    Abstract: An articulating derrick having a back face, a pair of opposed sides with each side having at least one leg, and an open face. The back face of the derrick includes a plurality of pairs of back face cross supports. Each cross support has a first and a second opposed end. Each first end is pivotally attached to one of the legs. A bushing pivotally connects the second ends of each pair of cross supports in order to permit movement of the back face between a folded, storage position and an open position.
    Type: Grant
    Filed: September 18, 2001
    Date of Patent: July 22, 2003
    Assignee: Woolslayer Companies, Inc.
    Inventors: John Brittain, Dewayne Vogt
  • Patent number: 5695842
    Abstract: An entrance grating for office buildings is comprised of a series of closely spaced tread rail elements, forming the upper surface of the grating, and a plurality of support elements underneath the tread rail elements and tightly secured thereto at right angles. The tread rails are of extruded construction and include a hollow, tubular spine section for high strength and rigidity per unit of weight. The underlying support elements, also of extruded construction, are in the form of downwardly opening channel-shaped elements. High strength, expandable wall, blind fasteners are employed to secure the support elements to the tread rail elements at each of the crossing points to provide a strong, rigid assembly. The open bottoms of the channel-shaped supports may be closed by plastic pad strips providing resilient support and noise reduction.
    Type: Grant
    Filed: April 23, 1996
    Date of Patent: December 9, 1997
    Assignee: Pawling Corporation
    Inventor: Ronald R. Peck, Jr.
  • Patent number: 5680732
    Abstract: A lifting and shoring jack assembly includes a main support assembly having a main column, a jack screw slidably mounted within the main column, and a jack nut engaged with the jack screw and bearing on the end of the main column. A load plate mounted at the free end of the jack screw facilitates engagement of the jack assembly with a load to be supported. Extensible side braces are pivotally mounted on the main column, and also include load engaging plates for load-bearing attachment to the load to be supported.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: October 28, 1997
    Inventor: Joseph Alexander Skouras
  • Patent number: 5634759
    Abstract: An upper part 30 of a column 28 can be raised and lowered by ram 11 which is normally carried by a counterbalance unit but which can be attached to the column. The rams 11 are mounted on a chassis 10 of the unit by disengageable pivotal mounts 22/23 and are normally carried in a storage position (FIG. 2). To mount the rams on the column, they are first swung about the pivotal mounts, and are then extended to bring bosses 19 into engagement with gussets 32 on the upper column part 30. Thereafter, the rams are retracted to lift them out of their pivotal mounts 22/23, and are swung about the bosses 19 to bring them into engagement with further gussets 31 on a base part 29 of the column.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: June 3, 1997
    Assignee: Abacus Holdings Limited
    Inventor: Alan J. Jenvey
  • Patent number: 5615855
    Abstract: In an integrated telescoping mast-payload assembly, the payload forms the top telescoping section.
    Type: Grant
    Filed: December 9, 1994
    Date of Patent: April 1, 1997
    Assignee: Tri-Ex Tower Corporation
    Inventors: Edward A. Marue, Kenneth J. Pereira
  • Patent number: 5524398
    Abstract: A portable collapsible tower including a frame, at least one stationary tower member fixed to the frame and at least one movable tower member movable along the exterior portion of the stationary tower member relative to the stationary member. A coupling, movably couples the stationary and movable tower members for movement along the exterior portions. At least one cable located along the exterior portions of the tower members, is used to extend and retract the tower members and a light or tool support bar. As the tension in the one or more cables is altered by a tension altering device, the support bar and tower members are moved between fully extended and fully retracted positions.
    Type: Grant
    Filed: June 13, 1995
    Date of Patent: June 11, 1996
    Assignee: Ingersoll-Rand Company
    Inventors: David B. Miller, William R. Hutchinson
  • Patent number: 5168680
    Abstract: An apparatus comprising a telescoping tower which has a first tubular tower member and a second tubular tower member which are relatively telescoped between an extended position and a retracted position. A first aperture is formed in the first tubular tower member. A second aperture is formed in the second tubular tower member, the second aperture being aligned with the first aperture when the tower is in the retracted position. A lock is inserted into the first and second apertures when the tower is in the retracted position, the lock limits relative displacement of the first and the second tubular tower members. The lock consists of a rod which is affixed to a vehicle. The tower is pivotally attached to the vehicle. When the tower is pivoted into a stored position, the lock will be inserted into the aligned apertures.
    Type: Grant
    Filed: November 8, 1990
    Date of Patent: December 8, 1992
    Assignee: Ingersoll-Rand Company
    Inventor: Jeffrey D. Matlock
  • Patent number: 5152659
    Abstract: A boom assembly for a work machine comprising: a pair of first and second members of which one end pivot part is connected pivotally to a base machine and the second end pivot part supports a loading tool pivotally. An inflecting part is provided in the middle of the longitudinal direction of boom, and a cross tie member which ties the said first and second members in pairs near the loading tool. In order to form a first member which is connected to a tractor and a second member which supports a loading tool, with horizontal and vertical planes of upper and lower C-channels, the lower C-channel is inserted into the upper C-channel and its adjoining edges are welded. In order to form the inflecting part, the first member which is connected to a tractor and the second member which supports the loading tool are joined in a manner wherein the upper side of it is opened and the lower side is butt welded.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: October 6, 1992
    Assignee: Kubota Corporation
    Inventor: Toshihiko Waka
  • Patent number: 5129199
    Abstract: An apparatus comprises a support and a tower pivotally attached to the support and movable relative to said support between a raised and a lowered position. The tower is rotatable to and from a predetermined position about a longitudinal axis thereof when the tower is the raised position. A latch device is displaceable between a secured position and a non-secured position, the tower being prevented from moving to the lowered position when the tower is raised and the latch device is in the secured position. A release system prevents displacement of the latch device from the secured position when the tower is not in the predetermined and raised positions. The release system permits displacement of the latch device from the secured position when the tower is in the predetermined and raised positions. The latch device includes a plunger and a biasing member located within a latch housing. The release system includes a contact element which is connected to the plunger.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: July 14, 1992
    Assignee: Ingersoll-Rand Company
    Inventors: David B. Miller, Jeffrey D. Matlock
  • Patent number: 4823870
    Abstract: A cantilevered drilling structure including a base unit having a side positionable generally adjacent a well head, and a drilling rig mast assembly positioned generally above and supported by the base unit. The base unit has a cantilever member extending out from its side, spaced from the ground, and having an outer portion spaced from the side. A telescoping leg extends down from the outer portion and is spaced from the side such that the side and the leg are positionable on opposite sides of a well head. The telescoping leg is movable between a lower support position and a higher raised position high enough to pass over flow lines when the drilling structure is moved along the well row. A skidding floor mechanism moves the drilling rig mast assembly along the base unit between a drilling position over the cantilever member when the telescoping leg has been extended and a moving position closer to the center of gravity of the base unit.
    Type: Grant
    Filed: August 1, 1988
    Date of Patent: April 25, 1989
    Inventor: Ronald S. Sorokan
  • Patent number: 4775029
    Abstract: 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 the lower boom. The upright support member is maintained plumb during raising and lowering of the lower boom, and the operator's platform, carried at the end of the upper boom, is maintained level during raising and lowering the upper boom. The upright support member is always positioned within the perimeter of the chassis of the boom lift.
    Type: Grant
    Filed: October 8, 1987
    Date of Patent: October 4, 1988
    Assignee: JLG Industries, Inc.
    Inventors: Wayne P. MacDonald, John F. DeStefan
  • Patent number: 4684306
    Abstract: An auxiliary rig is used in combination with a primary drilling or workover rig. The primary drilling rig typically includes an elongated upstanding drill tower, a base and a crown block. The auxiliary rig of the present invention includes a racking tower detachably mounted with the upper end of the drill tower to form an extension to the drill tower for receiving interconnected pairs of tubular members to reduce the tripping time of the tubular members into and out of the well. A movable slip and controller therefor of the auxiliary rig are operably guided by the racking tower for releasably supporting the pairs of tubular members.
    Type: Grant
    Filed: July 23, 1984
    Date of Patent: August 4, 1987
    Assignee: Pressure Services, Inc.
    Inventors: Jimmy D. Brewer, Albert W. Gunther, Jr., Albert W. Gunther, Sr.
  • Patent number: RE37559
    Abstract: In an integrated telescoping mast-payload assembly, the payload forms the top telescoping section.
    Type: Grant
    Filed: March 31, 1999
    Date of Patent: February 26, 2002
    Inventors: Edward A. Marue, Kenneth J. Pereira