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...When G.G. Hubbard learned of his future son-in-law's invention, he called it "only a toy." His daughter was engaged to a young man named Alexander Graham Bell.
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| Number | Title | Issue Date |
| 8371558 | Hoist apparatus A screwable hoisting apparatus to aid in elevating objects is described. The apparatus is embedded into a tree with one hand while the tree climber is free to use his other hand to secure himself to the tree. A method for using the same is disclosed. ... | 02/12/2013 |
| 8002244 | High load block construction and connection A high load lightweight block assembly (1) with a reduced mass hollow central shaft (2) through which a continuous or discontinuous rope loop (10) can be passed, which rope loop (10) carries the tensile operating loads within the block ( | 08/23/2011 |
| 7631854 | Horizontal bicycle storage hoist A ceiling-mounted bicycle storage hoist including a first elongated structural member (36) and a second elongated structural member (38). The first elongated structural member is connected to the second elongated structural member, forming a V-shaped s... | 12/15/2009 |
| 7594642 | High load connection system A rigid high load lightweight block (1) has unidirectional high strength moulded fibre bundles (4a, 4b) in the side plates (3a, 3b) for the carrying of the major operating tensile loads within the block ... | 09/29/2009 |
| 7419136 | Cable pulling device A cable is moved through a cable fitting (for example, a BUB fitting) into a first opening of the fitting and out of a second opening of the fitting. A roller support structure is mounted on a fitting such that a set of rollers supported by the roller support struct... | 09/02/2008 |
| 7380766 | Artist's easel One embodiment of an easel for supporting an artist work piece includes a vertical support member including an interior, a pulley system positioned completely within the interior, the pulley system adapted for moving a horizontal support member on the vertical suppo... | 06/03/2008 |
| 7367547 | Lifting device with release mechanism that moves with lifted object Provided is a lifting device comprising: a hook or clip; secured to the hook or clip, one or more first pulleys; a second hook or clip; secured to the second hook or clip, (i) a release mechanism comprising a second pulley and a releasable lock for an engaged flexib... | 05/06/2008 |
| 7234587 | Conveyor chain link A link of a conveyor chain comprising a main base body, a supporting element for supporting and retaining at least one supporting shaft with which a plurality of first rollers are rotatably associated, the link being adapted to be articulated to a similar adjacent l... | 06/26/2007 |
| 7197998 | Apparatus for supporting and pulling a tow rope Tow rope rewinder apparatus includes a spool driven by an electric motor. The motor becomes deenergized after tension of the tow rope reaches a predetermined magnitude. ... | 04/03/2007 |
| 7182319 | Roller assembly for a lifting device for a personal-transportation vehicle A preferred embodiment of a roller assembly for a lifting device for a personal-transportation vehicle includes a shaft member for mounting on a lifting arm assembly of the lifting device and having an outer surface, and a roller member for supporting a lifting stra... | 02/27/2007 |
| 7156775 | Starting block with pedal markings A starting block is used by a runner in a track event. The starting block contains a rail and a pair of foot pedal assemblies, one assembly connected to the left side of the rail and one assembly connected to the right side of the rail. Each foot pedal assembly cont... | 01/02/2007 |
| 7137481 | Fall arrest device with locking roller A fall arrest device used with a fixed safety rope comprises a support arm articulated on a first spindle of the body, a roller in the form of a cylindrical wheel mounted rotating free on a second spindle securedly attached to the support arm, and a centrifugal coup... | 11/21/2006 |
| 7130521 | Cable guide A cable guide for a cable support system that includes at least one support tray. The cable guide has a base with two base portions disposed in side by side relation. The base portions are adapted to cooperatively engage wires of the support tray(s). A support shaft... | 10/31/2006 |
| 7125001 | Method and device for pulling a cable through a section of pipe An improved cable pulling device and method is shown. The cable pulling device is smaller, less expensive, and easy to use for lateral line replacement. The cable pulling device includes a cable contacting portion that provides supplemental frictional force during a... | 10/24/2006 |
| 7086433 | Tree felling assembly An assembly for felling a segment of a tree trunk in a safe and controlled manner and method of using the same. The assembly comprises a vertical support structure having an elongated base portion, an elongated mast portion connected to the base portion or integrall... | 08/08/2006 |
| 7070170 | Cable sheave for a cableway system A cable sheave for cableway systems has a hub and a sheave surface extending outwardly from the hub. The sheave surface may be formed of spokes and a cable groove is formed on its periphery. Fastening devices are provided in the sheave surface for rigidly connecting... | 07/04/2006 |
| 7000873 | Microscope stand having balancing device The invention relates to a stand having a pivotable support arm (2) and a balance weight (AG), in which the balance weight (AG) acts via a cable pull (24) for the weight compensation of the load (G), the balance weight (AG) being arranged in the area o... | 02/21/2006 |
| 6941651 | Pulley and bearing assembly and a method and apparatus for inserting and fastening a bearing within a pulley A pulley and bearing assembly and a method of inserting and fastening a bearing within a pulley having an axially extending cylindrical hub portion with an axial bore forming an inner periphery of the pulley and a pair of opposite ends, an annular belt groove portio... | 09/13/2005 |
| 6908074 | Device for changing the rigging of the pulley blocks of a crane The device enables a switch from the pulley blocks being rigged with one strand to the pulley blocks being rigged with two strands and vice versa. The jib tip has a pulley moveable along its axle between a central position, when the blocks are rigged with one strand... | 06/21/2005 |
| 6877720 | Compact geometry tensiometer using a segmented sheave assembly A tensiometer for measuring tension in a tubular, such as a cable, using segmented sheave assemblies is provided. The precision of a tension measurement, and the bending stress to which the tubular is exposed during the tension measurement, are functions of the effe... | 04/12/2005 |
| 6742769 | Elevator sheave for use with flat ropes In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction. ... | 06/01/2004 |
| 6736372 | Apparatus and a system for lifting a trailer and a method for lifting and storing the trailer A lift, a system and a method for elevating a trailer are provided. The lift may have an “A” frame for supporting the trailer. The trailer may be placed on the lift and secured to the lift. A cable attached to the lift is used to pull the lift and the trailer to... | 05/18/2004 |
| 6727387 | Quaternary ammonium salts having a tertiary alkyl group A compound of formula I: ... | 04/27/2004 |
| 6701670 | Pulley for double hung windows A pulley apparatus (27) is disclosed which is adapted for use with a double hung wind. (10). The apparatus is used in pairs which are mounted in a recess (30) formed in the head (20) of the double hunt window. A pair of sash cords (25) are routed through ... | 03/09/2004 |
| 6478286 | Riveted structure for a pulley seat A riveted structure for a pulley seat, comprises a base which is pivotally connected to the pulley and is provided with two apertures on the surface of the two sides thereof, respectively; and a panel which is provided with an elongate through-hole at the... | 11/12/2002 |
| 6419208 | Elevator sheave for use with flat ropes In an elevator sheave for a flat belt, the optimum crown height is within a range of approximately 0.033 to about 0.003 times the width of the elevator rope. The optimum radius is in the range of about 16.67 to about 50.00 times the width of the elevator ... | 07/16/2002 |
| 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 |
| 6371448 | Rope drive element for driving synthetic fiber ropes A traction sheave for driving synthetic fiber ropes, preferably of an elevator installation, ensures a consistently good selected tractive capacity that is largely independent of external influences which reduce friction. At least part of the rope running... | 04/16/2002 |
| 6340271 | Conduit cable feeding sheave A conduit cable feeding sheave assembly is disclosed having a frame structure, an axle assembly disposed within the frame structure, and a sheave wheel disposed about the axle assembly. In one embodiment, the sheave wheel is fabricated of a self-lubricati... | 01/22/2002 |
| 6189455 | Transport apparatus An easily carried and assembled apparatus for use in moving materials between two elevated locations, such as windows of spaced building, that includes a sending assembly positionable across a window in a first building, and a receiving assembly positione... | 02/20/2001 |
| 6142450 | Lightning resistant hydrological pulley A lightning resistant hydrological pulley comprising an insulator between a pulley body and an axle insert. The insulator is made of electrically non-conductive material, thereby denying lightning surges an electrical path from the pulley body to an axle ... | 11/07/2000 |
| 6076806 | Pool cover top track pulley end cap An end cap assembly which has recessed areas in the base and cover which accept protruding spindles on the upper and lower surfaces of the pulley to align the pulley, provides easy access to the pulley without removal of the track by attaching the base po... | 06/20/2000 |
| 6068241 | Non-slipping pulley Disclosed is a pulley that comprises a metal bearing with an elastomeric material on its outer rim molded into a polymeric wheel, where the coefficient of thermal expansion of the polymeric wheel is at least 1.0×10-6 cm/cm/°C. greater than th... | 05/30/2000 |
| 6056273 | Internal sheave pulley system for bipods, tripods, or quadripods A bi-, tri-, or quadripod apparatus utilized over a confined space to aid in the introduction or removal of persons or equipment into the space, including a head casting with upright members extending vertically downwards and outwardly from the head casti... | 05/02/2000 |
| 5967496 | Lifting drum having a self-positioning cable guide A cable guide for a winch having a lifting drum over which a cable is wound back and forth between two end flanges. A guide body in the form of a truncated cone is slidably mounted upon a pinion that is located adjacent to one end of the drum, generally p... | 10/19/1999 |
| 5927693 | Rope guiding device with pivotal guide roller for rope winches A rope guiding device (1) for rope winches (W) comprises a stand with points of attachment for the attachment of a rope winch, which stand accommodates a rope guide (3) constituting the rope outlet and inlet and a guide roller (4) pivotally supported on t... | 07/27/1999 |
| 5836632 | Load balancing lifting apparatus Apparatus for balancing and lifting a load supported from opposite ends of a cable or chain and which includes a sheave engageable by the cable or chain and through which extends a pin member. The pin member is radially offset from the center of the sheav... | 11/17/1998 |
| 5792294 | Method of replacing sheave liner A sheave liner for an elevator system sheave that supports a hoist rope with an elevator car suspended therefrom is replaced without having to remove the hoist ropes and without having to hang the elevator car by means other than the hoist ropes. The exis... | 08/11/1998 |
| 5713098 | Wiper system A system for cleaning light transmitting elements such as windscreens, window-panes or optical instruments, comprising a wiper arm supported by a carriage performing reciprocating movements, and a intermediate gear means for transforming rotary movements ... | 02/03/1998 |
| 5662312 | Pressurized sheave mechanism for high pressure wireline service A pressure containing wireline sheave mechanism having a sheave body defining an opening within which is received a sheave housing which cooperates with the sheave body to define a circular internal sheave chamber which is exposed to operating pressure su... | 09/02/1997 |
