...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."
Make the Most of Our Site
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest innovations by subscribing to an RSS feed.
Registered users: Manage your profile.
| Number | Title | Issue Date |
| 7377022 | Drill press lathe attachment The present invention provides a drill press lathe attachment designed for rotating a workpiece along a horizontal axis to remove material from the workpiece to form it into a desired shape. The drill press lathe attachment comprises a base and a power transfer box ... | 05/27/2008 |
| 7069632 | Coaxial and concentric cutting machine and a method for use thereof A concentric coaxial cutting machine which cuts cylinders, cylindroids or cones using a chain saw from a single larger object such as a wood tree trunk, a block of ice or a block of plastic. An embodiment of the invention comprises a transverse support member having... | 07/04/2006 |
| 6832433 | Machining apparatus and method of using same The present invention comprises a machining apparatus including a work piece holder having an adapter body with an axial bore and a translating portion located within the axial bore of the adapter body. The translating portion has a proximal end for coupling with a ... | 12/21/2004 |
| 6796012 | Milling machine for carrying out milling and turning operations on rod material A milling and drilling machine for rod-shaped material. A motor-driven spindle head is movable on a column along a first coordinate axis and includes a work spindle capable of selectively accommodating milling and turning tools. A separating device transversely sepa... | 09/28/2004 |
| 6557226 | Apparatus for manufacturing a bone dowel Apparatus for manufacturing a bone dowel includes a machine base with tracks on a surface thereof. Modules configured to slide in the tracks may include a module for a high speed rotary tool, a collet module, a vise module and a threading module. A vise m... | 05/06/2003 |
| 6442814 | Apparatus for manufacturing a bone dowel Apparatus for manufacturing a bone dowel includes a machine base with tracks on a surface thereof. Modules configured to slide in the tracks may include a module for a high speed rotary tool, a collet module, a vise module and a threading module.... | 09/03/2002 |
| 6293320 | Multi-purpose machining apparatus A precision multi-purpose machining apparatus for facilitating lathing, milling, drilling, sawing or routing operations typically using a rotary-type cutting tool. In a preferred embodiment the multi-purpose machining apparatus of this invention is charac... | 09/25/2001 |
| 6102089 | Assembly for converting a drill press into a wood lathe The present invention relates to a new and improved modification for converting a drill press into a wood lathe. Further, the present invention relates to an adaption kit for the modification of a conventional drill press into a general-purpose wood lathe... | 08/15/2000 |
| 5678291 | Machine tool A machine tool more particularly for drilling and milling, possesses a machine bed, on which a power driven longitudinal slide is adapted to run horizontally on rails. A machining head having a rotary drive device for at least one table forming part of sa... | 10/21/1997 |
| 5611137 | Machine tool, more particularly for drilling and milling A machine tool more particularly for drilling and milling, possesses a machine bed, on which a power driven longitudinal slide is adapted to run horizontally on rails. A machining head having a rotary drive device for at least one table forming part of sa... | 03/18/1997 |
| 5586382 | Right angle turning attachment for milling machine A right angled turning attachment (6) connected to the spindle (5) of a milling machine (2). The attachment provides a thru hole clamping mechanism (13) for holding and turning material (10) with various cutting tools (9) mounted in tool holders (8) faste... | 12/24/1996 |
| 5090279 | Vertical spindle pedestal A vertical spindle pedestal, especially for attachment to a lathe, which vertical spindle pedestal includes a vertical column and a motor driven vertical spindle vertically adjustable relative to the column, the vertical column being a hollow one on which... | 02/25/1992 |
| 5009255 | Versatile structure for all machining work mainly on soft materials A multi-purpose machine tool which can include and provides for drilling, sawing, shaping, planning functions, all mounted in a sturdy frame of parallelepiped shape.... | 04/23/1991 |
| 4915148 | Jointer attachment for multipurpose power tool A specially designed jointer is provided as an accessory attachment to a multipurpose power tool assembly described in U.S. Pat. No. 4,349,945. The jointer may be mounted on the same bench surface as the multipurpose power tool itself and a tubular couple... | 04/10/1990 |
| 4890654 | Band saw attachment for multipurpose power tool A specially designed band saw is provided as an accessory attachment to a multipurpose power tool assembly described in U.S. Pat. No. 4,349,945. The band saw may be mounted on the same bench surface as the multipurpose power tool itself and a tubular coup... | 01/02/1990 |
| 4881309 | Flexible machining system A flexible machining system includes a four axis double end slant bed unit which can be operated as a single or double spindle chucker, a precision boring machine, a way-type machine, a lathe or an automatic bar feeder. By providing the unit with a fifth ... | 11/21/1989 |
| 4856153 | Spindle mechanism A spindle mechanism is capable of rotating for a rotative tool and is capable of being locked for mounting a nonrotative tool. First and second curvic couplings may be forced into engagement by a large hydraulic force which concurrently unloads a combined... | 08/15/1989 |
| 4856178 | Machine tool for turning, milling, boring, drilling, and washing with independent means for clamping the part to be machined A machine is accomplished comprising two pairs of operating heads in which each pair includes two identical operating heads essentially opposite to each other equipped with chucks rotating on horizontal axes having at one end a conical housing for receivi... | 08/15/1989 |
| 4719676 | Flexible machining system A flexible machining system includes a four axis double end slant bed unit which can be operated as a single or double spindle chucker, a precision boring machine, a way-type machine, a lathe or an automatic bar feeder. By providing the unit with a fifth ... | 01/19/1988 |
| 4709604 | Apparatus for milling exterior surfaces and refacing both shoulders of a two-shoulder tool joint A portable multipurpose device for refacing both the make-up shoulder and the secondary shoulder of a two-shoulder tool joint, and for milling the outside surfaces of tool joints and pipes. The device uses a fixed cutting blade and rotates the tool joint ... | 12/01/1987 |
| 4683787 | Method of machining a workpiece in a turret lathe and an nc lathe for performing this method A method of machining a workpiece, which is rotatable about a first axis, by a tool pivotable about a second axis parallel to the first axis and drivable about a third axis perpendicular to the second axis. To allow the circumference of the workpiece to b... | 08/04/1987 |
| 4635340 | Method of machining a workpiece in a turret lathe and an NC lathe for performing this method A method of machining a workpiece, which is rotatable about a first axis, by a tool pivotable about a second axis parallel to the first axis and drivable about a third axis perpendicular to the second axis. To allow the circumference of the workpiece to b... | 01/13/1987 |
| 4598744 | Universal machine for wood and/or synthetic plastic working A universal machine for the wood and/or synthetic plastic working has a base model for mounting of various working aggregates which can also be used as independent working aggregates, and includes a working motor supported in a height-adjusting device ins... | 07/08/1986 |
| 4574439 | Deep boring machine A deep boring machine is described which has a spindle unit (2) with a horizontal spindle shaft (40) for receiving a boring tool (50). The spindle unit is horizontally displaceable on a machine bed (1) and is driven by a spindle drive mechanism (2). The b... | 03/11/1986 |
| 4566169 | Set of parts for building small machine tools A building set is provided including at least a drive motor, a spindle stock and a support element for holding these elements. These elements can be assembled to form a variety of small machine tools. The elements are formed as independent parts with unde... | 01/28/1986 |
| 4538654 | Multiple use fixture assemblies for a cutting tool Combinations of fixture assembly parts assembleable to provide fixtures to support and convert a small high speed electric grinder such as a "Dremel" brand tool into a lathe, a router, a circular saw blade sharpener or a shaper. All of the fixture parts a... | 09/03/1985 |
| 4497100 | Apparatus for working pipes An apparatus for working of pipes or tubes, rod or bars, and the like, in the field of sanitary and heating installations, with electromotor drive. A drive machine is provided as the basic machine, and workpieces or working tools are selectively drivable ... | 02/05/1985 |
| 4455900 | Brake lathe This is a brake lathe for refinishing the inner cylindrical surface on a brake drum or the two outer side surfaces on a brake disc. The brake lathe has an indexable spindle so that its tool slide only needs to move in one direction and the part being work... | 06/26/1984 |
| 4440204 | Planer mounting system A planar of the type adapted to be mounted on and driven by a multipurpose woodworking tool includes a housing, a rotating blade member, and a table mounted beneath the blade member and vertically displaceable relative thereto by a plurality of jack screw... | 04/03/1984 |
| 4353154 | Apparatus for working pipes An apparatus for working of pipes or tubes, rod or bars, and the like, in the field of sanitary and heating installations, with electromotor drive. A drive machine is provided as the basic machine, and workpieces or working tools are selectively drivable ... | 10/12/1982 |
| 4349945 | Multi-purpose power tool A multi-purpose power tool in which a power head and a power carriage are mounted for reciprocal translation on a pair of elongated tubular ways, the ways being pivotally mounted and counterbalanced with respect to a generally horizontal base or stand suc... | 09/21/1982 |
| 3988814 | Milling machine An improved multi-purpose milling machine for milling a work piece along a desired line of action. The machine includes an electronic control network for controlling the position of the cutting tool relative to the work piece along a plurality of axes res... | 11/02/1976 |