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:
Aug. 07, 1984
Filed:
May. 07, 1982
Applicant:
Inventors:
Assignee:
Bell Maschinenfabrik AG, Kriens, CH;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21H / ;
U.S. Cl.
CPC ...
1621816 ; 162146 ; 162154 ; 162212 ; 162216 ;
Abstract
A method and machine for fabricating building boards or the like, especially asbestos cement plates, contains a turbulence device having at least one channel with a step-shaped widened portion. The channel either has the form of a slot extending over the entire width of the machine or there are provided a series of cylindrical bores forming essentially parallel channels. An intermediate chamber or compartment merges with the channel or channels. Leading from the intermediate chamber is an outlet gap to the upper surface of a felt band.