Slurry feed apparatus for fiber-reinforced structural cementitious panel production
US6986812B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 18, 2003 |
| Grant date | Jan 17, 2006 |
| Priority date | — |
| Expiry date | Oct 16, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB05C1/0834
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A feed apparatus for use in depositing a slurry upon a moving web having a direction of travel includes a main metering roll, a companion roll disposed in closely spaced relation to the metering roll to form a nip therebetween. The nip is constructed and arranged to retain a supply of the slurry, and the rolls are driven so that slurry retained in the nip progresses over an upper outer peripheral surface of the metering roll to be deposited upon the web. Also preferably included is a thickness control roll disposed in operational relationship to the metering roll for controlling thickness of a layer of slurry drawn from the nip over the outer metering roll surface. Preferably, the metering roll, the companion roll and the thickness control roll are driven in the same direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.