Did You Know...
...that one person who claimed to be the inventor of the television is Russian emigre Vladimir Zworykin? In 1929 David Sarnoff, founder of RCA, asked Zworykin what it would take to develop TV for commercial use. He said: a year and a half and $100,000. In reality, it took 20 years and $50 million! Before his death in 1982 at the age of 92, Zworykin said of his invention: "The technique is wonderful. It is beyond my expectations. But the programs! I would never let my children even come close to this thing."
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| Number | Title | Issue Date |
| 7207612 | Suspended lifting apparatus A suspended lifting apparatus for grasping and releasing unwieldy objects. As the apparatus is raised, a hinged mechanism causes the weight of the object being lifted to draw extendable lever arms of the apparatus inward, thereby gripping the object. An articulating... | 04/24/2007 |
| 7014171 | Tie lifter and holder An improved design that would allow one workman to easily elevate a heavy concrete tie to the base of the rail and hold it in position while tie is connected to the rail with retainer clips. Improvements are made in the handle design that allow the workman to remain... | 03/21/2006 |
| 6923730 | Putting stroke training device A putting stroke training device has two adjustable arms, each joined to an elevated arch at the “closed end” of the device. Preferably, the elevated arch is of sufficient dimensions to allow a golf ball to travel underneath and through the arch. Each arm may be... | 08/02/2005 |
| 6749392 | Quick connect/disconnect tank lifting brace and method of use A quick connect/disconnect tank lifting brace which lifts a tank from an overhang of it's top lid or cover. The brace includes a crossbar, preferably adjustable, with pivotal end clamps at opposite ends of the crossbar. A pair of clamp pivoting assemblies are provid... | 06/15/2004 |
| 6612803 | Positioning cradle for mine roof supports A cradle for placing a support in a mine. The cradle includes a housing for holding the mine support. The cradle includes an arm mechanism rotatably attached to the housing which has an open position that allows the support to enter the housing and a clos... | 09/02/2003 |
| 6568731 | Pipe lifting apparatus and method A pipe lifting apparatus and method utilizes gripper arms (A) having upwardly diverging links (B) pivotally connected to an upwardly extending operator member (C) for receiving a lifting attachment and for moving a stirrup (D) from side to side to lock an... | 05/27/2003 |
| 6012752 | Concrete pipe lifting apparatus A pipe lifter with lockable and releasable scissors grip structure, for laying large pipes. The apparatus includes a solid stabilizing plate over cooperating tongs, the base of the plate being capable of rotating about an axis parallel to the central axis... | 01/11/2000 |
| 5795003 | Apparatus for gripping and weight-different clamping of workpieces, bar guides and the like to be held or moved relative to a location An apparatus for gripping and weight-dependent clamping of workpieces, bar guides and the like that are to be held or moved relative to a location, particularly in connection with a hand-guided handling device that has a control switch. The apparatus incl... | 08/18/1998 |
| 5755476 | Hoist lock There is provided a gripping device with lifting arms mounted for relative rotational movement on a slider and having free ends spaced from each other and adapted to receive a load there-between. An arm link assembly coupled to the arms is movable between... | 05/26/1998 |
| 5364147 | Device for handling railroad timber A device for handling railroad timber, including ties, bridge timbers, crossing planks, and bundles of ties and timbers, which comprises spaced-apart pivotally mounted gripping members or jaws for engaging longitudinally along the timber, actuating levers... | 11/15/1994 |
| 5316356 | Game dragging device A game dragging device for attaching to a fallen game animal to thereby facilitate the dragging of the animal, the game dragging device including a pair of tongs for securing to the animal, the pair of tongs including a first tong member and a second tong... | 05/31/1994 |
| 5078440 | Apparatus for emergency conveyance of a human being disposed on a movable body Disclosed is an auxiliary conveyance apparatus for conveying a body to be conveyed very easily in case of emergency including intermediate parts of a pair of arm members, each having a gripping portion and an operating lever on both the ends, respectively... | 01/07/1992 |
| 4893860 | Device for gripping and suspending drill pipe stand According to the invention, the device comprises clamping elements hinged in a housing provided with a cut-out and a control system formed by a group of levers which are connected with a hoisting line. Besides, one of the levers is hinged to the housing a... | 01/16/1990 |
| 4687400 | Device for moving objects in a closed container A device for moving objects about the inside of a closed container includes a grasping mechanism for grasping and releasing objects and an operating mechanism for operating the grasping mechanism and for moving the grasping mechanism about the inside of t... | 08/18/1987 |
| 4521963 | Hydraulic cable and rod cutting and crimping device A novel hydraulic tool used to cut cables, rods, bars and the like or crimp various items such as cable connectors and which is operated manually and with ease by a single man. The improved cable cutting hydraulic tool comprises dual manually held handles... | 06/11/1985 |
| 4269087 | Tool assembly for mounting a wire clip to a grid member of a false ceiling The tool assembly includes a pliers comprising two pivotally connected elongate members each having a handle portion and a jaw portion. The jaw portion has an arcuate section with an elongate groove on the inside thereof facing a like groove in the opposi... | 05/26/1981 |
| 4217071 | Slip sheet repositioning apparatus A device and a method for repositioning loads carried on slip sheets in restricted space locations. The device comprises a pair of elongated gripping members, a plurality of vice devices operatively engaged with the gripping members to move the gripping m... | 08/12/1980 |
| 4186956 | Log carrier First and second opposite side pairs of laterally spaced upstanding tong arms defining open sided recesses opening toward each other are provided. The tong arms include upper and lower ends and structure is provided pivotally connecting the upper base end... | 02/05/1980 |
