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 |
| 8051745 | Method and apparatus for tensioning an emergency brake system on a vehicle An apparatus and associated method for use in tensioning a park brake cable system includes a body including a housing and an input shaft, the input shaft positioned at least partially within the housing, the housing and the input shaft being axially movable relativ... | 11/08/2011 |
| 7856909 | Screw prestressing device and method A screw prestressing device having a piston and a draw pin structured and arranged to be disconnectably coupled to an element and movable, via the piston, to apply a defined prestressing force in the element. ... | 12/28/2010 |
| 7819042 | System and method for tensioning an emergency brake system A brake tensioning system and method are described herein for use on vehicles. The system includes a tool, and the method includes the use of the tool to effectuate tensioning of a brake system conveniently, accurately, and repeatably. ... | 10/26/2010 |
| 7661336 | Hydraulic screw tightening or tensioning device A hydraulic screw tensioning device includes a cylinder supported on a machine part that is to be clamped by a threaded bolt and nut. A first annular piston is guided in a sealed manner in a cylinder element, is disposed on the change sleeve, and is supported agains... | 02/16/2010 |
| 7658131 | Subsea tensioner system A subsea tensioner system that includes a one or more spring activated piston return subsea tensioners. The subsea tensioner system can use a spring activated subsea tensioner because the subsea tensioner system uses non-toxic fluid to drive a piston disposed within... | 02/09/2010 |
| 7513178 | Hydraulic screw tightening or tensioning device A hydraulic screw tensioning device for adjusting screws or bolts includes a cylinder supported on a machine part to be clamped by a threaded bolt and nut, at least one piston guided in the cylinder, a change sleeve threaded onto a threaded end of the bolt, a rotary... | 04/07/2009 |
| 7313034 | Low supply voltage temperature compensated reference voltage generator and method A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo... | 12/25/2007 |
| 7283370 | Anti-strip screw boss A support member includes a support panel and a retention element for use in mounting an associated component to the support panel. The retention element defines a bore for receiving an associated threaded fixing element which mounts the component to the support pan... | 10/16/2007 |
| 7278341 | Structural bolt security apparatus A structural bolt security apparatus includes a security nut forming a threaded central hole for a bolt; the security nut has a groove in an upper surface and/or a side surface. At least one groove is at least partially separated from the threaded central hole by th... | 10/09/2007 |
| 7275462 | Tensioning device for prestressing a rod, and related tensioning method The invention relates to a device for tensioning a threaded rod (1). The inventive device comprises: an actuator (5) which can exert an axial force; and a tie rod (6) which transmits the axial force from the actuator (5) towards a threade... | 10/02/2007 |
| 7188549 | Axial-force-detective fastening tool, bolt, and method of manufacturing bolt An axial-force-detective fastening tool fastens a nut to a bolt, and at the same time, detects and axial force acting on the bolt. The tool has a socket body rotatably supported with a tool body and having a nut receiver. The socket body turns a nut received in the ... | 03/13/2007 |
| 7147210 | Cable tensioning system and method of operation A concrete reinforcement cable tensioning system is variably adjustable to apply different crimping for different sized cables. The system includes a concrete reinforcement cable tensioner having a first actuator for tensioning a cable extending through a concrete s... | 12/12/2006 |
| 7116588 | Low supply voltage temperature compensated reference voltage generator and method A reference voltage generator uses a conventional forward junction voltage generating device and a conventional thermal generator to generate a thermal voltage. The forward junction voltage and the thermal voltages have respective thermal sensitivities that act oppo... | 10/03/2006 |
| 7066053 | Washer, fastener provided with a washer A washer which has a body having a first bearing face surface at one axial side and adapted to cooperate with a nut, a second bearing face surface at an opposite axial side and adapted to cooperate with an object, at least one third turning resistant surface adapted... | 06/27/2006 |
| 7062998 | Hydraulic threaded bolt tightening device and method of use thereof A hydraulic threaded bolt tightening device (1) for tightening and loosening large bolted connections, comprising a cylinder supported on a machine part to be clamped by means of a threaded bolt and a nut (2), at least one piston which is guided thereo... | 06/20/2006 |
| 7055408 | Apparatus for tightening threaded member An apparatus (10) for tightening a hexagon head bolt (13) includes a vertically movable automatic robot arm (16), a screwing mechanism (18) having a rotational part (19), a shaft member (20) mounted to the rotational part, a... | 06/06/2006 |
| 6986298 | Method of and power tool for fastening objects For assembling at least two parts of an object with one another, a bolt having a thread is introduced into the parts, a washer is placed on a free end of the bolt, a nut is threadingly connected to the free end of the bolt so as to abut against the washer, a power t... | 01/17/2006 |
| 6957835 | Device for adjusting the space between adjacent knotter assemblies on a knotter drive shaft A knotter arrangement for a large rectangular or square baler includes a plurality of knotter assemblies mounted on a knotter drive shaft. Each knotter assembly includes a knotter drive gear mounted for rotation with, and axial movement along, the knotter drive shaf... | 10/25/2005 |
| 6810571 | Method of tightening and loosening an object A method of tightening and loosening an object to a rotary base torsion-free includes providing a single power tool having a tool housing portion and a driving portion which are coaxial with one another and provide equal but opposite forces, connecting a bolt with t... | 11/02/2004 |
| 6763570 | Method of closing a pressure vessel A pressure vessel having a removable closure head in a high radiation environment is closed by placing the closure head having a flange over and spaced from the flange of a pressure vessel body containing fissile material. The closure studs are installed in closure ... | 07/20/2004 |
| 6503021 | Method and apparatus for connecting underwater conduits A method and apparatus for connecting underwater conduits and more specifically, to a method and apparatus which is capable of performing the diverless connection of underwater flowlines and connection of these flowlines to underwater structures such as f... | 01/07/2003 |
| 6381827 | Method for maintaining a clamping force between bolted parts in high temperature A high temperature bolting system for clamping steam turbine housings and similar high temperature parts together while operating at a temperature of 800° F. to 1200° F. An elongated fastener shank and housing material have similar coefficient of therma... | 05/07/2002 |
| 6332378 | Method and device for producing screw assemblies The invention relates to a method and a device for producing screw assemblies, which can be preferably used in industrial production assembly processes, in workshops and in installation technology supervision involving high safety standards. The invention... | 12/25/2001 |
| 6263764 | Jackbolts for multi jackbolt tensioners Jackbolts for multi jackbolt tensioner embody a thread construction which taper from a maximum diameter adjacent to torque receiving end of the jackbolt when threadedly engaged with a threaded opening in the outer peripheral part of a jackbolt body. The t... | 07/24/2001 |
| 6199453 | High temperature bolting system A high temperature bolting system for clamping steam turbine housings and similar high temperature parts together while operating at a temperature of 800° F. to 1200° F. An elongated fastener shank and housing material have similar coefficient of therma... | 03/13/2001 |
| 6112396 | Jackbolts for multi jackbolt tensioners Jackbolts for multi jackbolt tensioner embody a thread construction which taper from a maximum diameter adjacent to torque receiving end of the jackbolt when threadedly engaged with a threaded opening in the outer peripheral part of a jackbolt body. The t... | 09/05/2000 |
| 6105471 | Bolt attaching and detaching device Provided is bolt attaching and detaching device for fastening and loosening bolt by heating the bolt by bolt heater inserted into central hole of the bolt by which fastening and loosening of the bolt can be done automatically without need of operator to w... | 08/22/2000 |
| 6065737 | Tensioning device An hydraulic, bolt tensioning device comprising a reaction component which in use bears against the member from which the bolt shank protrudes, the reaction component having a shank receiving bore extending therethrough, an annular, axially moveable compo... | 05/23/2000 |
| 5951222 | Bolting system with secured nuts, and method thereof A bolting system secures its nuts with locking pins and securing portions. The first and second bolts extend through a surface in the same general orientation, wherein each of the bolts has a threaded end. First and second nuts are engaged with the bolts'... | 09/14/1999 |
| 5946789 | Method of and device for elongating and relaxing a stud In order to elongate and relax a stud, a first part which is movable only in an axial direction engages the stud, a second part is connected with the first part, a friction element is connected with at least one of the parts so that the first part has mor... | 09/07/1999 |
| 5927157 | Axial tensioned bolting system and method thereof A bolting system for securing at least two structures having a bolt, a coupling nut, a hydraulic tensioner, and a lock nut. The bolt has a body with a threaded end and another end with a bolt head. The coupling nut is engageable with the threaded end of t... | 07/27/1999 |
| 5842263 | Method and manufacture of an axial tensioned bolt An axial tensioned bolt and nut for bolting together a turbine or similar piece of equipment. The bolt has parallel threads and the nut has a coil insert. The bolt is stretched and tensioned by a hydraulic tensioner. In one embodiment of the invention, th... | 12/01/1998 |
| 5699703 | Screwing device for measuring arrangement A screwing device provides an ultrasound-controlled tensioning of a screw connection. A measurement of the pre-tensioning force of the screw connection can be performed without complete fitting of a screwing tool on the screw connection. The screwing tool... | 12/23/1997 |
| 5689537 | Jet pump beam tensioner An apparatus for tensioning a hold down beam of a nuclear reactor jet pump inlet mixer is configured to be inserted in a confined annulus between a core shroud and a reactor vessel of a nuclear reactor. The hold down beam includes a beam body, a pair of o... | 11/18/1997 |
| 5640749 | Method of and device for elongating and relaxing a stud In order to elongate and relax a stud, a first part which is movable only in an axial direction engages the stud, a second part is connected with the first part, a friction element is connected with at least one of the parts radially inside the one part s... | 06/24/1997 |
| 5570871 | Device for selectively tensioning and clamping studs mounted on a pressure vessel to permit nuts to be tightened or loosened Apparatus for tightening and releasing nuts on screw-threaded studs to fit or release a cover on a pressure vessel employs several devices each for subjecting a respective one of the studs to tension to clamp the stud whilst the nut is rotated thereon. Ea... | 11/05/1996 |
| 5539970 | Method of and device for elongating and relaxing a stud In order to elongate and relax a stud, a first part which is movable only in an axial direction engages the stud, a second part is connected with the first part, a friction element is connected with at least one of the parts so that the first part has mor... | 07/30/1996 |
| 5452629 | Device for selectively tensioning and clamping studs mounted on a pressure vessel to permit nuts to be tightened or loosened Apparatus for tightening and releasing nuts on screw-threaded studs to fit or release a cover on a pressure vessel employs several devices for subjecting each of the studs to tension to clamp the stud whilst the nut is rotated thereon. Each device has a p... | 09/26/1995 |
| 5406867 | Mechanical tensioner A mechanical tensioner for a nut-bolt assembly has two input elements engaging with one another and engageable by an actuating tool so that the input elements are turnable relative to one another in opposite directions, one of the input elements being eng... | 04/18/1995 |
| 5408509 | Automatic pressure vessel servicing apparatus A method and apparatus for positioning stud affecting apparatus comprising: sequentially positioning a plurality of flange cover sectors about the flange of a nuclear pressure vessel; rotating each flange cover sector until the entire flange is covered by... | 04/18/1995 |
