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:
Oct. 02, 1979
Filed:
Dec. 06, 1976
Albert Wohrle, Giengen, DE;
J. M. Voith GmbH, Heidenheim, DE;
Abstract
Apparatus for removing the surplus of coating composition at the exposed side of a running paper web has a stationary support for a deformable doctor blade the edge portion or one side of which extends transversely of the path for and contacts the exposed side of the running web, a pivotable or reciprocable rigid beam which is mounted on the support and is urged toward the blade by one or more inflated flexible hoses, and a profile adjusting unit which is mounted on the beam and can be adjusted to deform selected portions of the blade in dependency on the desired profile of the exposed side of the web. The beam compensates for eventual variations of the bias of the hose, as considered transversely of the path. The pressure of fluid which is confined in the hose can be regulated in dependency on deviations of measured weight of coating composition from a desired weight. The regulating system utilizes a computer which compares first signals representing the measured weight with a reference signal and causes a transducer and a pneumatic amplifier to change the pressure of fluid whenever the intensity of first signals deviates from intensity of the second signal.