...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 |
| 8037730 | Titanium stretch forming apparatus and method A stretch-forming apparatus includes a main frame which carries a die enclosure between jaw assemblies. An insulated die is mounted in the enclosure. A method of forming a component includes placing a workpiece in the enclosure, heating the workpiece to a working te... | 10/18/2011 |
| 7607330 | Machine for drawing metal sheets Machine for drawing metal sheets, which comprises a static support (3) and a moving support (4) that hold a metal sheet (2) during a process of drawing said metal sheet (2), and driving means (5) that cause a longitudinal movement ... | 10/27/2009 |
| 7568371 | Stretch-forming machine and method A stretch-forming machine of the type wherein a pair of opposed curving jaw assemblies grip opposite end edge portions of a metal sheet for initially stretching the metal sheet into a yield state and forming the metal sheet into a predetermined curved configuration.... | 08/04/2009 |
| 7562550 | Cable bulbing apparatus and method for forming bulbs in a cable bolt A cable bulbing apparatus having a frame (1) and securing means (3) for holding at least a portion of a cable bolt (4) with respect to the frame (1). The apparatus also includes a bulbing assembly (5) which is releasably engagable ... | 07/21/2009 |
| 7361015 | Clamp device and clamp method for heat-treated article A heat treatment operation can be executed, suppressing a wave-shaped deformation at a non heat-treatment region of an article to be heat treated. To an elongated-shaped article to be heat treated to which a raised portion extending in the longitudinal direct... | 04/22/2008 |
| 7338025 | Method and apparatus for buttress stabilization A method for stabilizing a roof-resting vehicle includes the steps of leaning one or more buttress stands against a rear fender area of the vehicle, passing a chain under a rear end of the vehicle from one of the buttress stands to another, tightening the slack from... | 03/04/2008 |
| 7328510 | Elbow rotator An elbow rotator apparatus for rotating an integrally formed section of an elbow workpiece includes a pair of gripping arms which are selectively positionable in a first position displaced from the elbow workpiece, and a second position in which the gripping arms ar... | 02/12/2008 |
| 7290425 | Gripping apparatus and method A quick change gripping apparatus for gripping a workpiece having a profile. The apparatus includes a cylindrical housing having a first end and a second end. The cylindrical housing also includes an inner feature having a tapered wall. The housing also has a bottom... | 11/06/2007 |
| 7283891 | Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta... | 10/16/2007 |
| 7254975 | Vehicle repair clamps Devices for straightening portions of a vehicle, particularly the unibody and/or frame of a vehicle following a collision. A device comprising a clamp which is attachable to a pulling device which exerts a pulling force in a direction P. The clamp comprises jaws whi... | 08/14/2007 |
| 7178374 | Press forming apparatus for fuel cell metal separator A press forming apparatus, for metal separators for fuel cells, has a pair of peripheral portion holding dies which hold a peripheral portion of a material and are movable toward and counter to each other; a pair of intermediate portion forming dies for forming a in... | 02/20/2007 |
| 7124620 | Apparatus in the straightening bench of the car body The object of the invention is an apparatus in the straightening bench of the car body, which straightening bench includes a straightening table and a set of frame beams, attaching elements for attaching the car to the set of frame beams, at least a part of which at... | 10/24/2006 |
| 7082802 | Method of creating integral spacers in reinforcing bars employed in the fabrication of concrete pipe The present invention relates to an apparatus and method for selectively producing a deformation in a reinforcing frame employed in the fabrication of concrete pipes or other similar construction materials. The deformation maintains the frame in the proper predeterm... | 08/01/2006 |
| 7076987 | Method of producing tapered or pointed cannula A method of producing a tubular device is provided. The method comprises providing a tubular stock having an axial passage, heating the tubular stock at a first heating location to form a softened section, the softened section separating a workpiece portion of the t... | 07/18/2006 |
| 7069761 | Gripping apparatus and method A quick change gripping apparatus for gripping a workpiece having a profile. The apparatus includes a cylindrical housing having a first end and a second end. The cylindrical housing also includes an inner feature having a tapered wall. The housing also has a bottom... | 07/04/2006 |
| 6993952 | Multipurpose horizontal press having a fixed workpiece-holder for a tubular workpiece to be drawn or tapered A multipurpose horizontal press having a fixed workpiece-holder for a tubular workpiece to be drawn or tapered comprising a press body (1) surmounted by a worktable (2), having a superior surface (3) and an inferior surface (4), on the wo... | 02/07/2006 |
| 6959572 | Fixture for holding metals parts for bending or twist correction A fixture for supporting a workpiece such as a cast turbine blade allows bending and/or twist correction of the workpiece with the movable ram of a press. The fixture includes a base and a pair of workpiece supports mounted at spaced locations on the base. A bearing... | 11/01/2005 |
| 6860132 | Robot and method for bending orthodontic archwires and other medical devices A robotic bending apparatus for bending archwires and other types of elongate, bendable medical devices into a desired configuration includes a first gripping tool and a moveable gripping tool. The first gripping tool can be either fixed with respect to a base or ta... | 03/01/2005 |
| 6772617 | Method and apparatus for in-situ leveling of progressively formed sheet metal A stretch-forming press for stamping continuously fed sheet metal includes a ram, a base member, and a feed mechanism configured to advance a strip of sheet metal through the stretch-forming press. A forming station has a die configured to form a desired pattern in ... | 08/10/2004 |
| 6718809 | Method for processing billets out of metals and alloys and the article This method refers to a method by which the physical and mechanical properties intrinsic to a fine-grain structure may be formed in metal billets using pressure treatment. The method is designed to treat rods, bars and other particularly long billets. This method is... | 04/13/2004 |
| 6701766 | Plate-stretching grip head A metal-stretching grip head has a row of parallel upper plates wholly to one side of a plane and having front ends and rear ends and a row of parallel lower plates wholly to an opposite side of the plane and having front ends forming at the plane with th... | 03/09/2004 |
| 6688147 | Panel curving machine A panel, formed from a perforated face (102), is respectively concavely and convexly curved by seriatim stretching or contracting its flanges (104a, b; 156a, b). Such stretching and contracting is produced by placing the opposed flanges within jaw halves ... | 02/10/2004 |
| 6679091 | Stretch bender A stretch bending device that can conduct accurate bending without using heavy material. A tension application mechanism 62 comprises first and second drive sources for movably supporting both ends of a guide member 12 with respect to a pair of arm member... | 01/20/2004 |
| 6601426 | Laser stretch-forming processing apparatus for sheet metal A processing apparatus is provided which includes a stretch-forming apparatus and a beam processing unit or apparatus, which can be controlled by a common control unit. The beam processing unit can be a laser beam processing unit, which permits a sheet me... | 08/05/2003 |
| 6568233 | Method and apparatus of diametrically expanding metal shafts Method and apparatus for diametrically expanding a desired part of a metal shaft which can be a rod or a pipe, wherein the apparatus includes a driving rotary section (4) and a driven rotary section (6) arranged at a predetermined distance (D), each of th... | 05/27/2003 |
| 6508096 | Process for drawing and stretching sheet metal A draw stretch process is provided for shaping a workpiece initially comprising an elongated metal sheet having a pair of spaced opposite ends. The process involves placing the metal sheet in a metal forming position in a draw stretch forming machine betw... | 01/21/2003 |
| 6460391 | Clamping assembly for sheet metal leveling machine A clamping assembly for a machine that levels sheet metal by stretching the metal beyond its elastic limit includes two jaws which have generally planar gripping surfaces. When the jaws are forced together, the gripping surfaces on them bear against the s... | 10/08/2002 |
| 6439022 | Rolling apparatus A rolling apparatus is disclosed which forms a thin walled portion on part of a steel strip by allowing the steel strip to intervene between a pair of upper and lower rolling rolls, in which the upper rolling roll is vertically movable. The steel strip wh... | 08/27/2002 |
| 6386012 | Method and device for producing bellows In order to produce a metal bellows of a length of "Ls" for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a lengt... | 05/14/2002 |
| 6282939 | Method and device for producing bellows In order to produce a metal bellows of a length of "Ls" for use in a heated atmosphere, the following steps take place. First, a blank of the bellows is prepared, which is a metal pipe having a plurality of bulges formed therearound. The blank has a lengt... | 09/04/2001 |
| 6272897 | Method of forming honeycomb panels into compound curved shapes A generally planar metal honeycomb panel is formed into a complex compound curved shape by initially forming a primary first curvature in the panel using a conventional stretch wrap process. Following the primary stretch wrap process, a second stage form ... | 08/14/2001 |
| 6260398 | Forming of hollow extrusions with double plane bends and twists A method and apparatus for forming hollow extrusions. Specifically, a method and apparatus for imparting one or more bends and/or twists in a hollow extrusion under stretch. The apparatus may perform all of these formation and stretch functions as the res... | 07/17/2001 |
| 6234913 | Method of manufacturing of fastening elements A method for manufacturing of fastening elements (5, 6) and including producing a blank (1) having a length exceeding a combined length of two fastening elements, upsetting a head (2, 3) at each of opposite ends of the blank (1), heating a section of the ... | 05/22/2001 |
| 6227027 | Gripper means for stretcher leveler apparatus The present invention is an element for gripping metal to be stretched by a stretcher leveler apparatus. The gripping element includes a first and preferably a second high density cast polyurethane gripping pad adapted for engagement with the metal to be ... | 05/08/2001 |
| 6216521 | Process for improving the planeness of a metal sheet Process for improving planeness of a metal sheet, in which the sheet is stretched between two jaws for a period of time, applying a controlled permanent elongation of greater than 0.5%. Transverse pressure is applied on at least one face of the sheet duri... | 04/17/2001 |
| 6205830 | Method and apparatus for processing sheet metal A sheet metal processing apparatus comprises a stretcher-leveler and a surface conditioner in combination. The stretcher leveler has an input end, an output end, and a stretching mechanism between the input and output ends. The input end of the stretcher-... | 03/27/2001 |
| 6138489 | Method of making a heat transfer device A method of producing a heat transfer device comprising a base (1) and a number of flanges (2) projecting from the base (1), the device being formed with the flanges in a first mutual relation in a first operation and the base being subjected to at least ... | 10/31/2000 |
| 6109089 | Universal device and method for gripping workpieces of various configurations A universal gripping device for gripping and holding L-shaped and T-shaped workpieces comprises a main support on which are mounted a pair of opposed gripping members and an actuator for moving one of the gripping members toward and away from the other on... | 08/29/2000 |
| 6041639 | Method and apparatus for stretch-forming and shearing sheet metal A method and apparatus is provided for forming and shearing a sheet metal workpiece in a single operation. The method includes the steps of: (a) providing a stationary lower die half; (b) stretching the workpiece over the lower die half to stretch-form th... | 03/28/2000 |
| 6018970 | Stretch-forming machine with servo-controlled curving jaws A stretch-forming machine of the type wherein a pair of opposed curving jaws grips opposing ends of a metal sheet to be stretch-formed in a curved configuration. Each of the jaws are formed of an array of adjacent grippers movable relative to each other b... | 02/01/2000 |