Cylinder, device and machine for aligning magnetic or magnetizable particles on a web-like or sheet-like substrate
US10994302B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2019 |
| Grant date | May 4, 2021 |
| Priority date | — |
| Expiry date | Jan 15, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2404/191
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A cylinder is usable, in particular, for aligning magnetic of magnetizable particles, which are contained in a coating medium that is applied to a first side of a web-like or a sheet-like substrate, which cylinder, in the region of its outer circumference, has a plurality of elements effecting a magnetic field, magnetic elements for short. The magnetic elements are arranged in or on a plurality of ring elements that are spaced axially apart from one another and that are positionable in the axial direction on a shaft, in or on which ring elements, in turn, a plurality of magnetic elements are respectively arranged one after the other in the circumferential direction. At least two adjacent ring elements, each have a covering element, forming a part of the cylindrical lateral surface of the cylinder and extending in the circumferential direction, at least over the circumferential region populated with magnetic elements. The covering elements of two ring elements adjacent to each other have, on their sides facing each other in the axial direction, a plurality of projections alternating in the circumferential direction with recesses and offset in a circumferential direction in such a wa…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.