Famous Patents
The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 6521090 | Method and device for changing the natural frequency of a nip roll construction in a paper or board machine The invention concerns a method and a device for changing the natural frequency of a nip roll construction in a paper or board machine so that the rigidity of one or several loading elements, for example loading cylinder or loading beam, in the nip roll c... | 02/18/2003 |
| 6486448 | Method for heating of a roll and a heatable roll A heated roll and a method for heating of a roll, in particular of a press roll or calender roll in a paper or board machine. The roll has a hollow, tubular roll mantle. The roll is heated with electric current by means of electrical resistors fitted insi... | 11/26/2002 |
| 6461687 | Method for manufacturing a paper or board machine and coating composition therefor A roll for use in the manufacture of paper and board, a press roll, in particular a center roll in a press, a backup roll for an extended-nip press roll, a hot press roll, or equivalent, which is in direct contact with a wet paper web, or a calender roll,... | 10/08/2002 |
| 6416843 | Caring doctor blade and method for manufacture of same The invention concerns a caring doctor blade for a paper/board machine, which blade comprises layers of fiberglass and carbon fiber and a caring layer as a rigid laminated structure, which caring layer comprises carbon fiber and grinding particles in dire... | 07/09/2002 |
| 6231722 | Method and system for monitoring the process of separation of a web A method and system for monitoring a separation process of a web in a paper machine in which the web is separated from a roll and passed into a free draw, which is preferably the first free draw of the web in the paper machine. A separation point of the w... | 05/15/2001 |
| 6200248 | Roll for a paper or board machine A roll for use in the manufacture of paper and board, a press roll, in particular a center roll in a press, a backup roll for an extended-nip press roll, a hot press roll, or equivalent, which is in direct contact with a wet paper web, or a calender roll,... | 03/13/2001 |
| 5821498 | Method for heating of a roll and a heatable roll The invention concerns a heated roll and a method for heating of a roll, in particular of a press roll or calender roll in a paper or board machine. The roll has a hollow, tubular roll mantle. According to the invention, the roll is heated with electric c... | 10/13/1998 |
| 5782729 | Method for regulating loading of an adjustable-crown roll and an adjustable-crown roll A method for regulating the loading of adjustable-crown roll having a stationary roll axle around which a roll mantle is rotatingly mounted, and of which roll a nip is formed with a backup roll. The deflection of the roll mantle and/or the linear load in ... | 07/21/1998 |
| 5597449 | Method and device for conditioning the coating of a paper machine roll A method and device for conditioning a ceramic or metal-ceramic coating of a paper machine roll at its operating site. The roll is ground periodically by a grinding member mounted on a doctor of the roll. The grain size of the grinding particles in the gr... | 01/28/1997 |
| 5235747 | Method of manufacture of a roll for use in paper production The invention concerns a roll for use in the production of paper, in particular a center roll in a press section of a paper making machine, with which the web is in direct contact and from which the web is detached. In the invention, a composite structure... | 08/17/1993 |
| 5111567 | Roll for use in paper production and method of manufacture thereof The invention concerns a roll for use in the production of paper, in particular a center roll in a press section of a paper making machine, with which the web is in direct contact and from which the web is detached. In the invention, a composite structure... | 05/12/1992 |
