The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 09, 1989
Filed:
Mar. 21, 1988
Oscar Luthi, Nashua, NH (US);
Ingersoll-Rand Company, Woodcliff Lake, NJ (US);
Abstract
An air-tight vat under pressure completely encloses a rotatable drum. The vat is constructed so that it may be completely submerged in liquid. The vat has a liquid filled take-off chamber. The pulp is fed to the vat through a pulp inlet. The pulp is formed and compacted to form a pulp mat. Directly following the forming and compacting of the pulp is a washing zone for washing the pulp mat. After washing the pulp mat is again compacted. The pulp mat is removed from the drum at a removal point located in the liquid filled take-off chamber, thus providing a pulp suspension in the take-off chamber. The suspension is removed from the vat through a pulp outlet extending from the liquid filled take-off chamber.