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 |
| 7189176 | Motor-driven steering apparatus A motor-driven steering apparatus includes a steering member reciprocating in correspondence to a steering wheel operation, a ball nut inserted to a ball thread shaft of the steering member, a drive pulley driven by an electric motor, and a driven pulley coupled to ... | 03/13/2007 |
| 7147596 | Low-mass roller or pulley A low-mass roller is disclosed comprising a cylindrical body formed of polymeric material and having an exterior surface, first and second open ends and defining an interior tubular space along a longitudinal axis therethrough for receiving an axle; and an outer she... | 12/12/2006 |
| 6826046 | Disk drive unit A disk drive unit carrier (1) is adapted to carry a single disk drive unit (2). The carrier (1) includes a temperature control device (4) for controlling the temperature of the disk drive unit (2). The temperature control device ( | 11/30/2004 |
| 6742769 | Elevator sheave for use with flat ropes In an elevator sheave for a flat belt, hard, thin surface plating can be applied to enhance durability while maintaining traction. ... | 06/01/2004 |
| 6692392 | Lagging system for conveyor belt pulleys A lagging system for conveyor belt pulleys is provided that allows for significant flexibility in attaching lagging members to the face of the pulleys while also providing improved distribution of the lagging material on the pulley face, and doing this wh... | 02/17/2004 |
| 6419208 | Elevator sheave for use with flat ropes In an elevator sheave for a flat belt, the optimum crown height is within a range of approximately 0.033 to about 0.003 times the width of the elevator rope. The optimum radius is in the range of about 16.67 to about 50.00 times the width of the elevator ... | 07/16/2002 |
| 5284457 | Belt guide pulley There is provided a clam shell shaped belt guide pulley having first and second curved halves which are hinged together. Each pulley half has curved inner and outer surfaces. The pulley is adapted to be placed on a large diameter shaft without the need to... | 02/08/1994 |
| 5244435 | Reversing axes belt steering pulley A cylindrical pulley over which a belt or web is looped is composed of a series of flat, annular discs, each of which rotates about its own individual axis, all discs closely adjacent to its neighbors so that the aggregate of discs forms the cylindrical p... | 09/14/1993 |
| 5037359 | Transmission system, motor drive comprising such a transmission system and wheel and belt for such a transmission system or motor drive A transmission system comprising at least two wheels and a belt wound around the wheels with an unambiguous transmission ratio in that the transmission system is free from clearance and is comparatively stiff, while geometric errors, such as the polygon e... | 08/06/1991 |
| 4592463 | Roller with double left and double right helix pattern track A conveyor belt roller having a pair of opposed double tracks or threads formed on the surface thereof. Each pair of tracks spirals around the roller a plurality of times to provide a respective double helix pattern track running left and right from the m... | 06/03/1986 |
| 4545192 | Yarn false twisting apparatus A yarn false twisting apparatus is disclosed which comprises a pair of rotating circular discs having cooperating friction surfaces for engaging a running yarn at a twisting zone. The drive system for the discs includes a drive component which includes a ... | 10/08/1985 |
| 4527470 | Pulley for band printers An improved pulley system for use with band printers or the like. A steel printing band is looped around a pair of capstans covered by sleeves made of elastomeric material. The sleeves include a plurality of downwardly angled flexible circumferential flan... | 07/09/1985 |
| 4371362 | Track roller system A track roller system includes a replaceable rim assembly made up of two groups of multi-segments held to the hub in axially spaced position by a multi-segment retainer in the central space between the groups of rim segments, the rim segments retained aga... | 02/01/1983 |
| 4034618 | Noise reducing apparatus for track type vehicle drive sprockets and means for attaching same Apparatus is provided for reducing the noise generated by the meshing of an endless track and a drive sprocket of a track type vehicle including a pair of annular treads of resilient material. The treads are mounted about the peripheries of a respective o... | 07/12/1977 |
| 3937528 | Segmented and cushioned idler for track-type vehicles and method for repairing same A track-type vehicle, such as a crawler tractor, comprises a pair of endless tracks mounted on either side thereof. Each of the tracks is entrained over a drive sprocket at its rearward end and over an idler at its forward end. The idler comprises a hub h... | 02/10/1976 |
