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"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7971685 | Pump jack tree stand The invention comprises, in one form thereof, a pump jack tree stand including a platform and a seat engaging a pump jack. The pump jack cooperates with a pole that is supported by an adjacent tree. The user actuates a foot lever on the pump jack to climb the pole. ... | 07/05/2011 |
| 7857096 | Steel pump jack with safety latch and method An upper shackle assembly for a steel pump jack for a wood pole includes a u-shaped shackle component to receive the wood pole. The assembly includes a crank handle that extends through the shackle component and engages the pole to lower the pump jack down the pole.... | 12/28/2010 |
| 7823694 | Motorized climbing hunting stand A motorized, climbing tree stand ideal for hunting has a rigid elongated, track constructed from multiple, axially aligned sections attached to a tree trunk. A carriage supporting a seat and footrest is coupled to a shuttle assembly that engages the track. The shutt... | 11/02/2010 |
| 7690481 | Tree stand support bracket The belt buckle for a tree stand strap has holes in the frame of the buckle and the handle for accepting pins from a bracket attached to a tree stand such that the tree stand can be hung from the belt buckle that is used to tighten the strap around the tree. In this... | 04/06/2010 |
| 7513334 | Powered rope climbing apparatus Portable power driven rope climbing apparatus having a motor driving a gear reduction mechanism which drives a pulley wheel securing a rope extending thereabouts. A rope output guide member is provided for maintaining the rope in engagement with the pulley wheel an ... | 04/07/2009 |
| 7434662 | Apparatus for hunting in trees An apparatus and method for hunting in leaning and non-leaning trees is disclosed. The apparatus includes an adjustable tree stand having top and/or bottom adjustment. Adjustment is provided through the use of an adjustment device attached to a support or a cross-me... | 10/14/2008 |
| 7350769 | Collapsible tree stand hoist A collapsible tree stand hoist including an elongated pole, a stationary arm secured to the distal end thereof and a movable arm configured to slide back and forth along the length of the elongated pole is provided. Each of the arms include teeth or serrations for g... | 04/01/2008 |
| 7296658 | Tree stand support bracket The tree stand support bracket has three mutually pivotable parts and a belt for adjustably securing the length of the belt to fit the size of the tree it is attached to. The pivotable parts are the handle for tightening the belt, a belt strap adjustment portion for... | 11/20/2007 |
| 7287623 | Adjustable tree stand with power drive A tree stand with a seating section and a standing section, at least one of the sections having a frame with first and second sides, inner and outer ends, a first cable attachment arm with inner and outer ends along the first side, and a second cable attachment arm ... | 10/30/2007 |
| 7281607 | Elevating device The elevating device of the present invention is comprised of first, second, and third dovetail members that are interlockingly engaged. First dovetail member is secured to an object or an independent surface such as a tree or a ladder. First and second dovetail mem... | 10/16/2007 |
| 7232009 | Ascension/descension apparatus and method A pole ascension apparatus and associated method are disclosed. According to one embodiment, the apparatus includes a track connected to a pole and a portable platform portion detachably connectable to the track. The portable platform portion may move upwardly and d... | 06/19/2007 |
| 7218013 | Wind powered generator A wind powered electrical generation assembly having a portable wind powered generator tower for supporting a wind powered generator allowing the wind powered generator to be raised, lowered, and removed from the tower. The wind powered electrical generation assembl... | 05/15/2007 |
| 7198134 | Method and apparatus for assisting multiple climbers A method is provided for assisting multiple climbers in ascending and descending the same ladder using an apparatus that includes a plurality of counterweights and a rigging system coupled to the counterweights, the rigging system includes at least two subsystems, e... | 04/03/2007 |
| 7152835 | Bracket assembly lock A bracket assembly includes an angle bracket having a horizontal leg and a vertical leg. A lower bracket arm and a lock are coupled to the angle bracket and cooperate to mount the angle bracket onto an upright. The lock includes a pair of side members pivotally coup... | 12/26/2006 |
| 7114690 | Universal mast support frame and method for mounting masts A support apparatus used with construction masts. The support apparatus comprises a truss and a top adjustable mount assembly secured to the truss. The top adjustable mount assembly is selectively positionable so as to engage the construction mast. ... | 10/03/2006 |
| 7086502 | Transport apparatus and method having conformable gripping capability A transport apparatus for transporting materials or objects on substantially vertical structures for installation, deployment, inspection and repair purposes includes gripping mechanisms having a conformable gripping portion. The gripping mechanisms are separated by... | 08/08/2006 |
| 7080716 | Movable fall prevention device for a belay support A movable fall-preventing device (1) for a belay support (6) includes an axis-retaining groove which retains the belay support (6) by means of a lever (16) that pivots between an open position and a closed position. One end of the lever c... | 07/25/2006 |
| 7073628 | Device for climbing on extended supporting elements, such as ropes, with releasable automatically reclamping clasps The device for climbing a pair of ropes (1) includes upper and lower clasps (4,6) for clamping each rope and connecting elements for holding a climber, which include a movable or solid seat (7, 12) or harness (23). Each clasp (4,6)... | 07/11/2006 |
| 7062873 | Golf marking flag for attachment to moveable poles for marking hole location in golf course greens A golf marking flag for attachment to a supporting upright pole having flag attachment means comprising a linear sleeve adapted to loosely slip over the upright pole to enable unobstructed rotation of the flag in response to wind direction along with a flexible tab ... | 06/20/2006 |
| 7014594 | Ladder climbing safety system Ladder climbing safety system for use with a trapeze set-up and which is separate and apart from the usual trapeze safety system. The ladder climbing safety system is arranged to engage a safety belt worn by the trapeze artist to prevent the person from falling when... | 03/21/2006 |
| 6981571 | Climber catcher An apparatus and methods of use for a climber catcher safety device having the ability to securely engage the pole so that the safety device can hold or otherwise support a body belt attached to the fallen technician. In various embodiments, the safety device includ... | 01/03/2006 |
| 6973995 | Integrated support device and method A support device secures a technician to a pole during elevated line work. The support device may be integrated with a safety strap to keep the technician from falling if the gaffs of the technician cut out from the pole. ... | 12/13/2005 |
| 6926118 | Anchor for personal fall arrest equipment An anchor for positioning in an opening of a surface includes a first generally flat portion having a slot formed therein, the slot having a longitudinal centerline; a second generally flat portion having a slot formed therein, the slot having a longitudinal centerl... | 08/09/2005 |
| 6902032 | Technician catcher This invention provides apparatus and methods of use for a technician catcher safety device having the means to securely engage the pole so that the safety device can hold or otherwise support a safety strap attached to the fallen technician. In various embodiments,... | 06/07/2005 |
| 6896101 | Climbing device A climbing device is configured to have a locking mechanism operative to allow the handle and the footplate of the climbing device to pivot to and engage a portion of building structure in a position, in which further displacement of the footplate and handle relativ... | 05/24/2005 |
| 6868943 | Safety systems and methods for bosun's chairs A safety device for a bosun's chair includes means for movably attaching the bosun's chair to a mast and means for braking the bosun's chair relative to the mast. ... | 03/22/2005 |
| 6793258 | Device and method for gripping a handrail A device and method for gripping a handrail or other object having a top and a bottom surface. The device includes a handle for gripping by a user. A fixed member is coupled to the handle for engaging one of the top and bottom surfaces of the handrail, and a movable... | 09/21/2004 |
| 6782973 | Device for climbing on extended support elements, such as ropes, with releasable automatically reclamping clasps The device for climbing a pair of ropes (1) includes releasable upper and lower clasps (4,6) for each rope that clamp in response to a downward force acting thereon but relieve when the downward force is relieved and connecting elements for holding a c... | 08/31/2004 |
| 6752242 | Wood pole fall protection device A wood pole fall protection device for line technicians and pole climbers that allows travel up and down a wooden pole without incurring a fall or injury. The wood pole fall protection device is also designed to provide the line technician with the ability to rotate... | 06/22/2004 |
| 6715585 | Tree stand A tree stand has a platform and seat portion that are used together. The two portions are very similar and differ in that the platform has a grid on which a hunter can stand, and the seat portion has a sling in which the hunter can sit. Both portions have a frame wi... | 04/06/2004 |
| 6619432 | Object transport apparatus, drive mechanism for object transport apparatus and method of using object transport apparatus A cable transport apparatus (1) has a first rotational axis (20a, 20c) and a second rotational axis (20b, 20d) that are not in parallel but cross each other with a predetermined angle therebetween. In this way, a V-shaped space is formed between transport... | 09/16/2003 |
| 6412602 | Climbing device The invention relates to a motor-driven (22) climbing device (1) which, with the aid of a motor-driven winch (14) and a conventional rope lock (4), allows comfortable ascent along a rope (2), the safety factor with regard to fall prevention being maintain... | 07/02/2002 |
| 6382355 | Climbing appliance for roping-up and roping-down operations A climbing appliance (1) for roping persons up and down using the double rope technique is proposed, which comprises a housing (12) and a clamping jaw (13) mounted pivotally in the housing, wherein a main rope (2) conveyed over an upper reversing point (3... | 05/07/2002 |
| 6382356 | Man lift apparatus The man lift apparatus comprises a handle secured to first and second arms which extend around an upright pole-type support for supporting a user at a selected position upon the upright pole-type support. When the handle is positioned substantially parall... | 05/07/2002 |
| 6357549 | Guide rail climbing lifting platform and method A guide rail system is used to erect towers, to place equipment on towers and for maintenance of towers. The guide rail may be added to existing towers, a climbing lifting platform is attached to the guide rails and is used to transport items up and down ... | 03/19/2002 |
| 6241045 | Safety structures for pole climbing applications A novel fall protection apparatus is described wherein a worker can climb a pole, while maneuvering about the pole as he climbs. This structure enables the worker to both ascend and descend, but be protected upon an accidental fall from the pole. In parti... | 06/05/2001 |
| 6223854 | Safety and support garment for use in tree stand A safety and support garment that is worn by a user to assist the user in climbing a tree and then maintaining either a standing or sitting position in the tree. The garment includes a girdle with leg holes through which the user extends his or her legs a... | 05/01/2001 |
| 6079517 | Power driven tree stand A power driven tree stand including an elevator assembly having a pair of parallel primary rails and a pair of parallel secondary rails. A primary axle couples the primary rails and a secondary axle couples the secondary rails. A pair of primary tires are... | 06/27/2000 |
| 6045442 | Non-rotating, heavy duty game hoist A heavy-duty game hoist for suspending large game, such as deer, or other animals for processing in a stable, non-rotating manner. The preferred embodiment of the present invention contemplates a hoist configured to be affixed to a pole, tree, or the like... | 04/04/2000 |
| 6041891 | Climbing device for building frames A climbing device for attaching to building frames having a pair of jaw members, at least one of which is movable with respect to the other. The spacing between the jaw members may be adjusted, and a lever mechanism is provided to permit the user to detac... | 03/28/2000 |
