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 |
| 7066798 | Adapter for grinding machine Disclosed is an adapter for grinding machine comprising: a grinding shaft sleeve of cylindrical shape whose one end is open and having at least one through hole formed at a selected position of an outer circumference; a grinding shaft rotatably and movably fitted in... | 06/27/2006 |
| 6802759 | Grinder A grinder for grinding an outer surface of a roll, in particular one of a tissue cylinder and a machine glazed cylinder, the roll having an axis, including a grinding mechanism displaceable in a direction substantially parallel to the axis of the roll, the grinder m... | 10/12/2004 |
| 6616511 | Rolling mill equipped with on-line roll grinding system and grinding wheel A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an ab... | 09/09/2003 |
| 6450861 | Rolling mill equipped with on-line roll grinding system and grinding wheel A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an ab... | 09/17/2002 |
| 6283823 | Rolling mill equipped with on-line roll grinding system and grinding wheel A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an ab... | 09/04/2001 |
| 6257964 | Roll grinding system for a roll A roll grinding system includes a roll with a pair of longitudinally opposite ends, a longitudinal axis extending between the ends, and an outer surface. A material removal tool is movable in a travel path along a length of the roll. The material removal ... | 07/10/2001 |
| 5997389 | In-line grinding device for mill rolls and/or pinch rolls In-line grinding device for mill rolls and/or pinch rolls, arranged in cooperation with the working surface of the working rolls (11) and/or support rolls (12) and/or intermediate rolls of a rolling stand for sheet, strip and/or wide plate, or in cooperat... | 12/07/1999 |
| 5954565 | Rolling mill equipped with on-line roll grinding system and grinding wheel A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an ab... | 09/21/1999 |
| 5853318 | Roll surface grinder A roll surface grinder includes a frame mounted on a carriage assembly for traversing movement between opposite sides of the frame in a direction parallel to the axis of the roll subject to grinding. The carriage assembly includes a linear drive system fo... | 12/29/1998 |
| 5738570 | Arrangement for machining rolls during the rolling operation An arrangement for working or machining rolls which are mounted through chocks in roll housings. The arrangement includes a unit with abrasives for each roll, wherein the unit is mounted so as to be rotatable relative to the roll and so as to be adjustabl... | 04/14/1998 |
| 5722876 | Electric motor driven type on-line roll grinder, its control method and grinding method An electric drive motor with a small size and large rotary torque is used as a driving device for a grinding wheel of a grinding device. The motor such as an AC servo motor is encased in a casing to protect it from humidity, high temperature, scattered oi... | 03/03/1998 |
| 5618224 | Roll cleaning device A device for cleaning or polishing a roll (4), mounted for rotation about an axis and comprising a cleaning roller (41) mounted for rotation on a support device comprising two parallel arms (15, 16) extending, respectively, between an inner end (15a, 16a)... | 04/08/1997 |
| 5569060 | On-line roll grinding apparatus A grinding unit 5 comprises grinding wheel 20, a driving device 22 for driving the grinding wheel, and a shifting device 23. When the grinding wheel is subject to vibration of a work roll 1a, vibrating energy is absorbed by deflection of a plain wheel 52 ... | 10/29/1996 |
| 5562525 | Rolling mill equipped with on-line roll grinding system and grinding wheel A grinding head unit is constituted by a grinding wheel, a drive device for rotating the grinding wheel, and a movement device for moving the grinding wheel. When vibration of a mill roll is applied to the grinding wheel, a plain wheel integral with an ab... | 10/08/1996 |
| 4495734 | Grinding arrangement for chopping cutter of drum-chopper machine An arrangement for grinding a chopping cutter of a drum-chopper machine has a grinding tool, a grinding carriage which carries the grinding tool and is reciprocable parallel to an axis of rotation of the chopper drum over a length of the latter, a drive f... | 01/29/1985 |
