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."
PatentStorm News
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 |
| 8087169 | Method of manufacturing sheet metal back face pulley A sheet metal-made cup-shaped material including a circular base plate portion and a cylindrical portion extends from an outer peripheral edge portion of the base plate portion in one direction along the axis of the base plate portion. An annular groove is formed in... | 01/03/2012 |
| 7958635 | Process for producing a pulley for a continuously variable belt drive transmission A process for producing a pulley for a belt drive CVT, including subjecting tapered surfaces of a preform of at least one of input and output pulleys to surface hardening, subjecting the surface-hardened tapered surfaces of the preform to hard turning to form microg... | 06/14/2011 |
| 7292809 | Drive unit, method of producing drive unit, running body moving unit, image reading apparatus, and imaging apparatus A drive unit including a drive shaft, a drive pulley attached to the drive shaft, and a drive wire driven by the drive pulley so as to move a movable body. The drive pulley is formed by press working or rolling. ... | 11/06/2007 |
| 7244681 | Methods for selective removal of material from wafer alignment marks A process and apparatus for locally removing any material, such as a refractory metal, in particular tungsten, from any desired area of a wafer, such as an alignment mark area of a silicon wafer in process during the formation of integrated circuits thereon. ... | 07/17/2007 |
| 7178423 | Noise and vibration damper for a vehicular driveshaft assembly A noise and vibration damper for use with a rotatable structure, such as a driveshaft assembly for a vehicular drive train system, includes an inner member, an elastomeric member that extends about the inner member, and an outer member that extends about the elastom... | 02/20/2007 |
| 7171750 | Method of producing a torsional damper To provide a method of producing a torsional damper to prevent an annular rubber undulation in the pressing of the annular rubber between a hub and an annular mass, improve strain durability of the torsional damper, and decrease a press-in load in the press-in of th... | 02/06/2007 |
| 7070170 | Cable sheave for a cableway system A cable sheave for cableway systems has a hub and a sheave surface extending outwardly from the hub. The sheave surface may be formed of spokes and a cable groove is formed on its periphery. Fastening devices are provided in the sheave surface for rigidly connecting... | 07/04/2006 |
| 7055243 | Crankshaft damper with integral pulse ring and method The invention comprises a crankshaft damper having an integral pulse ring. The crankshaft damper comprises an inner hub and outer pulley with an elastomeric connecting member between each. The elastomeric ring dampens a crankshaft vibration. The integral pulse ring ... | 06/06/2006 |
| 7047644 | Crankshaft damper and method of assembly A crankshaft damper and a method of crankshaft damper assembly using interlocking beads. A crankshaft damper having a hub portion and pulley ring and an elastomeric member disposed in an annular space between them is clamped in a tool after initial assembly. A tool ... | 05/23/2006 |
| 6951150 | Gearwheel intended to be press-fitted onto a shaft and a shaft carrying a press-fitted gearwheel Gearwheel, intended to be connected through press fitting to a shaft, the gearwheel exhibiting a hub and a cog path connected to the hub, the hub exhibiting at least one flank extending axially outside the cog path and a through-hole with a first area situated axial... | 10/04/2005 |
| 6941651 | Pulley and bearing assembly and a method and apparatus for inserting and fastening a bearing within a pulley A pulley and bearing assembly and a method of inserting and fastening a bearing within a pulley having an axially extending cylindrical hub portion with an axial bore forming an inner periphery of the pulley and a pair of opposite ends, an annular belt groove portio... | 09/13/2005 |
| 6925713 | Method of manufacturing an annular member made from a metal sheet having a peripheral wall The present invention relates to a disc-shaped material made from metal sheet, provided for the manufacture of a pulley or the like. According to the present invention, even if the metal sheet is thin and light weight, a peripheral wall of sufficient strength can be... | 08/09/2005 |
| 6540428 | Caulking roller and sintered flanged pulley caulked by the caulking roller A sintered, flanged cam pulley includes a sintered cam pulley body and an annular flange caulked to the sintered cam pulley body. The sintered cam pulley body has at an end portion thereof an axial annular projection and a stepped portion formed on an out... | 04/01/2003 |
| 6488604 | V-belt pulley V-belt pulley comprising an outer rim (2) provided with at least one V-belt groove (7) formed by turning, said groove (7) having a bottom (9) provided with a plurality of radially through-going and circumferentially interspaced openings (8). The pulley is... | 12/03/2002 |
| 6370776 | Method of producing a poly-V pulley The present invention provides a method of producing a poly-V pulley which can economically produce a poly-V pulley of the type that is to be inserted and coupled onto a shaft via a one-way clutch or a bearing, the number of steps being as small as possib... | 04/16/2002 |
| 5857267 | Drive assembly with interference-fit mounted lightweight non-ferrous pulley A drive assembly for rotating a shaft of a pulley-driven device is disclosed together with a method of making the drive assembly. The method comprises the steps of forming a pulley of lightweight non-ferrous metal having a web portion, forming a radially ... | 01/12/1999 |
| 5829135 | Method of joining a stationary pulley and shaft assembly for a continuously variable transmission A pulley shaft and stationary pulley assembly for a belt drive mechanism of a continuously variable transmission includes an inner surface of the pulley having metal-cutting serrations, a blocking shoulder, and a surface for engaging a pilot guide surface... | 11/03/1998 |
| 5465485 | Method for producing damper pulley A method for producing a damper pulley having a boss portion to be press-fitted onto a rotary shaft, an annular main portion extending from the boss portion, a flange portion formed along an outer periphery of the main portion, a ring-shaped damper-mass m... | 11/14/1995 |
| 5454760 | Precision pulley wheel A method and construction of forming a pulley wheel mounted on a shaft. The pulley includes a pair of identical discs fused back to back by laser welding forming a pulley wheel with a peripheral groove and axial central opening. The pulley wheel is mounte... | 10/03/1995 |
| 5441456 | Press-formed pulley A lightweight pulley is provided which can be produced in a simple manner at low cost. The pulley has a cylindrical boss portion, an annular main portion which extends radially outwardly from the cylindrical boss portion, and a ring-shaped belt retaining ... | 08/15/1995 |
| 5031433 | Method and apparatus for manufacturing a pulley An appratus and method for manufacturing a pulley having a generally V-shaped groove therein is provided. The apparatus includes a press section and a molding section. The starting material for forming the pulley is a ring-shaped workpiece which is prefer... | 07/16/1991 |
| 4906223 | Pulley construction, drive system utilizing the same and methods of making the same A pulley construction, drive system utilizing the pulley construction and method of making the pulley construction are provided, the pulley construction being utilized with an endless drive belt and comprising a body member having a peripheral groove ther... | 03/06/1990 |
| 4843694 | Method of making a clutch rotor for an electromagnetic clutch A clutch rotor for use in an electromagnetic clutch and the method for producing a clutch rotor is disclosed. The clutch rotor comprises a rotor member and a V-shaped pulley to receive a drive belt. The rotor member includes an outer cylindrical portion, ... | 07/04/1989 |
| 4831705 | Method of manufacturing a sheet metal poly-V pulley A method of manufacturing a sheet metal poly-V pulley including forming a tubular peripheral wall integrally from the peripheral edge of bottom wall and forming poly-V grooves in the peripheral wall at specified pitches, in which a bent part is formed in ... | 05/23/1989 |
| 4820246 | Pulley construction, drive system utilizing the same and methods of making the same A pulley construction, drive system utilizing the pulley construction and method of making the pulley construction are provided, the pulley construction being utilized with an endless drive belt and comprising a body member having a peripheral groove ther... | 04/11/1989 |
| 4648163 | Method of making a poly-V ribbed pulley A method of making a poly-V ribbed pulley engaged with a V-ribbed belt or V-ribbed belts. The method includes the steps of pressing two flanges or one circular projection between the two flanges in the cylinder, pressing a flange at the radially outer end... | 03/10/1987 |
| 4547179 | Timing belt pulley and method of manufacture A pulley particularly developed for timing belt systems for engines where the outer pulley surface is formed from a corrugated strip butt welded together. The resulting cylindrical ring is fixed to an inner formed wheel and conveniently positioned during ... | 10/15/1985 |
| 4482340 | Low-friction thin-hub plastic multi-part sheave A low-friction thin-hub plastic multi-part sheave for handling wire, has two joined disc-like members with conical rim portions which together form a V-groove for the wire. The members have apertured central hub portions provided with facing shoulders tha... | 11/13/1984 |
| 4162567 | Method for making a sheet metal pulley The method disclosed herein briefly includes the steps of forming a pair of nestled cup-like pulley hubs having radially extending flanges in side-by-side relationship and (2) rotating the nestled hubs about a rotating axis while simultaneously urging a t... | 07/31/1979 |
| 4138776 | Method for fabricating pulleys There is disclosed herein a method and apparatus for fabricating a pulley which the pulley rim is fabricated from a cylindrically-shaped blank of constant diameter which is deformed by relatively movable die forming members so as to form a ring having a ... | 02/13/1979 |
| 4094051 | Method of making sheaves A series of adjoining concentric rings are cut from a metal plate. The same number of hubs, all the same shape, are also cut from plate material as are annular web plates to fit around hubs, but the outer diameters of the web plates are different from one... | 06/13/1978 |
| 4090284 | Method of making a sintered pulley hub construction A sintered pulley hub construction for mounting on a bottom wall of a sheet metal pulley cup. A pair of tubular members is pressure formed in a green compact state from a metal powder mixture. One of the members has a cylindrical body which terminates at ... | 05/23/1978 |
| 4079492 | Method of making bearing pulley A method of producing bearing pulleys for conveyer belts and roller gravity conveyers in which the bearing pulley includes a cylindrical portion and common central pivot pins secured to the cylindrical portion by a hub or roller base, which comprises prov... | 03/21/1978 |
| 4069572 | Method of making clutch pulley assembly A clutch pulley assembly primarily designed for use with electromagnetic clutches for driving air conditioning compressors on automobiles and the like wherein the component parts of the clutch pulley assembly are fabricated from stampings with a reduction... | 01/24/1978 |
| 4037486 | Pulley An inexpensive pulley assembly is disclosed which accommodates a number of driving belts. The pulley includes a hub and a number of sheet metal members. These sheet metal members includes bases for attachment to the hub, inner flanges, sleeves flaring axi... | 07/26/1977 |
| 4007532 | Locking pulley assembly and method of making same A locking pulley assembly includes a pulley adapted to be affixed to a surface, a pull handle, a swivel hook, and a cord extending between the swivel hook and the handle around the pulley wheel. The pulley includes a unitary pulley wheel having locking gr... | 02/15/1977 |
| 4004335 | Method of making clutch pulley A clutch pulley assembly primarily designed for use with electromagnetic type clutches for driving air conditioning compressors on automobiles and the like wherein the component parts of the clutch pulley assembly are fabricated from stampings with a redu... | 01/25/1977 |
| 3990136 | Method for producing revolving parts There is provided a method for producing revolving parts, such as sprockets, gears and pulleys, for light loads. A metallic annular member formed with notches in its inner periphery is mounted on a bearing. A boss is molded on each side of the annular mem... | 11/09/1976 |
| 3962926 | Stamped sheet metal pulley A sheet metal pulley having a pair of stamped sheet metal cups with telescopically interfitted side wall portions and integral flanges forming in cooperation with the flanges of rings received on the cups a plurality of V-shaped grooves. The rings are fix... | 06/15/1976 |
| 3961406 | Method of pulley construction Two identical shaped discs stamped in a die and joined together back-to-back to form a hub, web and belt-riding groove. The hub formed is an annular cup-shaped pocket in which a closely fitted bushing is received. The discs are formed from a blank in a co... | 06/08/1976 |
