Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 8052560 | Power transmission device A power transmission device includes a pulley 1 and a hub 2 having an inner hub 21, a rubber damper 22 and an outer hub 23. A hub side engagement portion 24 formed of an elastic material and arranged at either one, or both, ... | 11/08/2011 |
| 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 |
| 6390242 | Elevator traction sheave liner A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure an... | 05/21/2002 |
| 6386324 | Elevator traction sheave A tension member for an elevator system has an aspect ratio of greater than one, where aspect ratio is defined as the ratio of tension member width w to thickness t (w/t). The increase in aspect ratio results in a reduction in the maximum rope pressure an... | 05/14/2002 |
| 6048284 | Pulley with a damper between rotary input and output members A pulley which can be driven by the output element of the engine in a motor vehicle to transmit torque to one or more endless belts or chains has a rotary input member, a rotary output member and a damper which yieldably opposes rotation of the input and ... | 04/11/2000 |
| 5951422 | Hub and pulley with radially inward annular collar A hub is spun rolled formed of a portion of metal radially displaced from a side of a disc of sheet metal. An annular collar formed of an annular part of the disc extends inward of the hub and creates a blind bore. The collar is integral with the hub and ... | 09/14/1999 |
| 5843264 | Vibration insulating assembly and method for making the same The present invention is directed to a vibration insulating assembly including a rubber vibration insulator and metallic members bonded thereto. In particular, the present invention relates to a method for manufacturing the same, by which the quality of t... | 12/01/1998 |
| 5797819 | Resin pulley A resin pulley was made of a resin material wherein an inorganic fiber such as glass fiber, an inorganic powder such as silica powder, an organic fiber such as cotton cloth fiber, and an elastomer are blended in a phenol resin. Each content of the inorgan... | 08/25/1998 |
| 5792294 | Method of replacing sheave liner A sheave liner for an elevator system sheave that supports a hoist rope with an elevator car suspended therefrom is replaced without having to remove the hoist ropes and without having to hang the elevator car by means other than the hoist ropes. The exis... | 08/11/1998 |
| 5791876 | Floating drive assembly for an automotive cooling fan An assembly (12) for moving air through a heat exchanger (10) comprising a shroud (14) for mating with a heat exchanger (10) and a fan (20) disposed in the rear opening (18) of the shroud (14). The fan (20) comprises a hub (22) having an axis (A) and blad... | 08/11/1998 |
| 5540626 | Damper pulley A lightweight damper pulley is provided which can be produced in a simple manner. The damper pulley includes a central portion, a belt retaining portion made of metal plate, and a ring-shaped rubber or elastic member placed therebetween. The central porti... | 07/30/1996 |
| 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 |
| 5409423 | Belt pulley Belt pulley having a substantially cup-shaped profile that is delimited on one side, at least in the axial direction, by an integrally shaped-on rim flange is disclosed. The rim flange is configured as the hub ring of a torsional vibration damper; the hub... | 04/25/1995 |
| 5088597 | Traction wheel An impact damping devise for a conveyor traction wheel assembly adapted to support an elongated flexible drive member. The traction wheel assembly includes a periphery having a circumferential support surface. The impact damping device comprises an elonga... | 02/18/1992 |
| 4878411 | Band saw wheel A band saw wheel and blade combination including a pulley having a peripheral groove and a tire mated with and received within the groove. The tire has an inner diameter greater than the inner diameter of the groove to be free floating within the groove. ... | 11/07/1989 |
| 4589861 | Simple recording head drive having virtually zero backlash or slippage A non-deformable metallic pulley is coated with a urethane layer having a thickness of about 0.0005 inches. A drive belt, coupled to a recording head, is positioned over the urethane layer of the pulley, which in turn is driven by a stepping motor. The dr... | 05/20/1986 |
| 4548592 | Pulley construction A pulley, composite in nature, including a fabricated wheel defining a rim channel into which a ring is positioned. The ring is rigidly held within the channel by tabs and interlocking arrangements. The ring is designed to include any one of a number of p... | 10/22/1985 |
| 4468210 | Composite plastic pulley A composite pulley construction intended primarily for use with the endless drive belt for vehicle accessories. The pulley is formed of a sheet metal body and has a multi-V-groove belt-receiving formation molded of plastic on an outer cylindrical wall por... | 08/28/1984 |
| 4465161 | Elevator winding device An elevator drive sheave includes a groove in its peripheral surface. A plurality of circumferentially spaced projected teeth are provided in the groove and a lining extends over these teeth. A stranded elevator rope is received in the groove in contact w... | 08/14/1984 |
| 4441692 | Rubber-lagged sheave A pulley or sheave that is lagged with rubber or rubber-like material, has two disc-like members which are disposed broadside to each other and secured together to form an annular groove for receiving and guiding a strand of material. At their centers, th... | 04/10/1984 |
| 3946618 | Bull wheel A bull wheel is disclosed for applying a tensioning or retarding force to cable. The bull wheel has a center drum having a peripheral rim. A series of groove defining segments of resilient material are detachably secured to the rim to form the traction wh... | 03/30/1976 |
| 3934482 | Cable traction sheave A cable traction sheave is described comprising a metal sheave body fixed a rotatable hydraulic motor housing and having a novel cable groove liner. The liner is formed of a solid elastomeric and has a band of pressure release material that permits defor... | 01/27/1976 |
