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:
Apr. 21, 1981
Filed:
Jul. 30, 1979
Stanley W Pigott, Haywards Heath, GB;
BICC Limited, London, GB;
Abstract
A method and apparatus are provided for continuously extruding rod feedstock through a die orifice while gripping two opposed sides of the feedstock to a pressure greater than the yield strength of the material with means for applying lubricant to the ungripped surfaces, constraining walls between which the feedstock is fed in the gripped condition, a stop at one end of the constraining walls, and a die orifice near the stop through which the feedstock is extruded, said lubricant applying means including at least two cylinders each having an open end facing a respective one of the ungripped surface when the apparatus is in use and means for introducing compressed gas into each of the cylinders.