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 |
| 7159751 | Wire bonder The bondhead of a Wire Bonder, that serves to produce a wire connection between two connection points by means of a capillary guiding a wire, is formed as a pantograph mechanism. The pantograph mechanism comprises a first swivel arm driven by a first motor, a second... | 01/09/2007 |
| 7111525 | Crank shaft The invention relates to a crank shaft having a guide groove allowing the movement of a crank pin so as to adjust the reciprocating distance of a piston according to the rotating direction. The crank shaft comprises a rotation shaft for inducing the rotating movemen... | 09/26/2006 |
| 6308586 | Gear transmission with stepless adjustable translation The invention relates to a gear transmission with a steplessly adjustable translation ratio for converting of rotary speeds and of torques of shafts. The uniform rotary motion of a drive shaft is transferred to a driven shaft with the aid of time staggere... | 10/30/2001 |
| 6230575 | Gear transmission with stepless adjustable translation The invention relates to a transmission gear with a steplessly adjustable translation for converting rotation speeds and torques between two shafts. Such converters are employed in all areas of the drive technology, as for example in machine tools and veh... | 05/15/2001 |
| 5660151 | Apparatus for mutual conversion between circular motion and reciprocal motion An apparatus for mutual conversion between circular motion and reciprocal motion includes a lever member which is rotatably mounted on a line connecting a rotational center and a circumference of a rotary disk, the lever member having a fulcrum, an action... | 08/26/1997 |
| 5479838 | Two-stage drive type lever unit and machine apparatus using the same A lever unit 11 having a fulcrum regulator 12 movably connected to a first motor 14 and a force point regulator 13 movably connected to a second motor 15, in which the motor 15 is driven while the motor 14 is stopped, thereby moving an injection mold 20A ... | 01/02/1996 |
| 5301535 | Arrangement for changing the lever ratio of a two-armed rocker lever An arrangement for changing the lever ratio of a two-armed rocker lever, particularly for the transfer movements in a press. The rocker lever is pivotally connected in a lever arm and the starting movement is capable of being tapped by another lever arm. ... | 04/12/1994 |
| 5287728 | Power transmission device for press machine A power transmission device for a press machine comprises a connection link connected to a crankshaft of the press machine and reciprocated in accordance with the rotation of the crankshaft, a first slider provided in a frame of the press machine so as to... | 02/22/1994 |
| 5255572 | Variable stroke mechanism A variable stroke mechanism provides a means for varying the stroke and leverage of a linkage between reciprocating power source and crankshaft. The mechanism includes a lever connected at one end to the reciprocating power source and at the other end to ... | 10/26/1993 |
| 5182967 | Lever apparatus having a freely movable fulcrum and mechanical apparatus using the same A lever member (1) is pivotally supported on a shaft for a roller (2) which is in rolling contact with a guide plate (3). One end of the lever member (1) is connected to a force point regulator (4), and the other end of the lever member is connected to an... | 02/02/1993 |
| 4934217 | Power transmission apparatus and methods of constructing and utilizing same A multiple speed ratio power transmission apparatus, comprises input mechanism adapted to be connected to a power source for being driven with a constant reciprocating or oscillating motion, output mechanism including a rotatable output shaft, motion tran... | 06/19/1990 |
| 4841799 | Variable ratio lever arm mechanism A variable ratio rocker arm is provided for use in combination with the valve stem and push rod of an internal combustion engine. The rocker arm has a toothed rack. A fulcrum rod is provided with a toothed sector and a curved sector. A stationary support ... | 06/27/1989 |
| 4741195 | Apparatus for clamping and unclamping feed bars for a transfer press In a transfer press having feed bars and a press drive, an improved feed bar driving apparatus has a vertical rod reciprocally movable in association with the press drive and having a threaded portion, a drive means to the vertical rod means for rotating ... | 05/03/1988 |
| 4739667 | Power transmission with variable length lever A power transmission apparatus transmits power from a rotatable cam to an output mechanism. A variable length lever, comprised of first and second lever sections, is pivoted to a lever support by a fulcrum. The lever sections telescopingly or otherwise in... | 04/26/1988 |
| 4721007 | Variable ratio lever arm mechanism A variable ratio rocker arm is provided for use in combination with the valve stem and push rod of an internal combustion engine. The rocker arm has an elongated slot defined between a rod seat and a toothed rack. A fulcrum rod is provided with a toothed ... | 01/26/1988 |
| 4702428 | Infinitely variable ratio drive mechanism A variable ratio drive mechanism comprises a reciprocable input member having a toothing, an output gear and an intermediate pivoted gear meshing with the toothing of said input member and said output gear to effect a driving connection between the input ... | 10/27/1987 |
| 4691437 | Devices for applying terminals and similar metal elements to conductors, lengths of elastic material and the like The improvements relate to devices for applying terminals and the like to the ends of filiform bodies such as conductors, lengths of elastic material and other articles. For feeding the metal strip, formed from an interconnected succession of terminals or... | 09/08/1987 |
| 4649767 | Trim linkage A mechanical proportioning trim execution device in the general configuration of a four-bar linkage including input and output levers coupled by a connecting link, with the input lever having its length determined by a movable pivot automatically adjusted... | 03/17/1987 |
| 4635494 | Infinitely variable transmission and control apparatus therefor An infinitely variable transmission, method of controlling an infinitely variable transmission, and an apparatus utilizing the method. The infinitely variable transmission provides a lever or walking beam having a variable fulcrum point. Power is supplied... | 01/13/1987 |
| 4565105 | Power transmission apparatus A power transmission apparatus includes a housing to which input and output shafts are journalled. The input shaft is rotated by a motor or prime mover to thereby drive a cardioidal-shaped cam. The cam reciprocates a drive rod which has a first end slidab... | 01/21/1986 |
| 4563916 | Dynamically variable oscillating adjustment assembly A dynamically variable oscillating adjustment assembly including a frame and a first link means pivotally connected at one end to the frame and an adjustment mechanism positioned intermediate the one end of the first link means and the frame to adjustably... | 01/14/1986 |
| 4324155 | Mounting assembly for a control actuator A mounting bracket for mounting a control actuator has a mounting surface, a mounting portion and a bore in the mounting portion. The control actuator is mounted on the mounting surface and the mounting portion is connected to a wall at an aperture in the... | 04/13/1982 |
| 4286474 | Trim execution device A mechanical proportioning trim execution device has a fulcrumed lever which swings between fully retracted and fully advanced positions. The fulcrum is movable back and forth from a neutral point along a fulcrum path. The lever has a fulcrum-engaging sli... | 09/01/1981 |
| 4235130 | Adjustable stroke piston and crankshaft assembly The invention relates to an adjustable stroke piston machine assembly wherein the stroke is adjustable steplessly from zero to full displacement. Two connecting rods are provided and a pivotal joint between the rods is guided by an arc shape path of a gui... | 11/25/1980 |
| 4234107 | Tube filling machine having an adjustable stroke, cam operated piston A tube filling and closing machine includes a material feeding device which comprises a container for the material to be packaged which opens into a cylinder in which a piston is movable backwardly and forwardly for taking in the material from the contain... | 11/18/1980 |
| 4196829 | Stopper throttling system A stopper valve actuating mechanism for a bottom pour casting container including an adjustable limit motion connection within the lever train which allows for a finer control of the pour of the molten metal. The adjustable limit stop connection comprises... | 04/08/1980 |
| 4182203 | Continuously variable mechanical transmission A continuously variable mechanical transmission comprised of a crankshaft or similar device driven by a suitable power source such as an internal combustion engine, which drives one or more pivotally mounted levers, pushrods and ratchet mechanisms. The le... | 01/08/1980 |
