Air guide box for stabilizing the path of a paper web

Patent 4893741 Issued on January 16, 1990. Estimated Expiration Date:

November 14, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

Air guide box for the dryer section of a paper making machine
Patent #: 4502231
Issued on: 03/05/1985
Inventor: Fissmann , et al.

Method and apparatus for supporting a web in high-speed paper machines
Patent #: 4602439
Issued on: 07/29/1986
Inventor: Eskelinen , et al.

Apparatus in a drying section of a paper machine
Patent #: 4628618
Issued on: 12/16/1986
Inventor: Virta , et al.

Blow box for a dryer Patent #: 4669198
Issued on: 06/02/1987
Inventor: Wedel

Inventor

Heinzmann, Helmut

Assignee

J. M. Voith GmbH

Application

No. 270787 filed on 11/14/1988

US Classes:

242/615, MATERIAL GUIDE OR GUARD34/114, Gas or vapor circulation for contact with treated material34/116, With belts or felts34/117, With threading, stripping, or guiding devices34/123, With belts or felts162/290, Molding and heat exchange means162/375, With heat exchange means242/562With material end separator (e.g., doctor blade or jet)

Examiners

Primary: Hastings, Karen M.

Attorney, Agent or Firm

Jeffers; Albert L., Robinson; Richard L., Niewyk; Anthony

International Classes

F26B 013/08
B65H 023/24

Foreign Application Priority Data

1987-11-20 DE

Abstract

The present invention is an air guide box. The box has a guide wall intended to lay adjacent to a running web. The guide wall has an air suction channel and a discharge opening. A drive jet blows air into the air suction channel to create suction, with the air being expelled through the discharge opening.