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:
Dec. 02, 1980
Filed:
Sep. 28, 1977
Norman Foster, Southampton, GB;
Alan G Stephenson, Ringwood, GB;
British-American Tobacco Company Limited, London, GB;
Abstract
The invention concerns a method of lap joining pieces of tobacco in which the said pieces are placed in overlapping relationship and the overlapping portions are adhered to each other, without using extraneous adhesive, by the application to them of pressure and/or rapid heating. Pressure may be applied between rollers or between jaws, particularly the jaws of an electrical impulse-heating machine. In this case, the overlapping portions lap joined by the rapid application of heat and pressure may be cooled while still held between the said jaws. Prior or subsequent to lap joining, a consolidating agent may be applied to end portions of the tobacco pieces.