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:
Sep. 19, 1978
Filed:
Jun. 07, 1977
Karl-Heinz Barbe, Hamburg, DE;
Hauni-Werke Korber & Co. Kg., , DE;
Abstract
Apparatus for expelling gas bubbles from liquid adhesive which is conveyed through a conduit connecting an adhesive-containing vessel with a nozzle which applies adhesive to the running web of wrapping material in a tobacco or filter material processing machine. The conduit has a first section which contains a large-capacity pump and discharges adhesive into the enlarged portion of an annular channel defined by the cylinder and core of a gas evacuating device. The enlarged portion is followed by a second portion of smaller cross-sectional area which communicates with a radially inwardly extending gap of the core to admit some adhesive and the gases into a passage serving to return the gases and escaping adhesive to the vessel. A second section of the conduit contains a smaller-capacity pump and serves to feed degasified adhesive from the second portion of the channel to the nozzle.