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:
Mar. 27, 1990
Filed:
Mar. 10, 1989
Jumei Harada, Kodaira, JP;
Michitoshi Sorioka, Kodaira, JP;
Bridgestone Corporation, Tokyo, JP;
Abstract
A rotary roll extruder which performs shaping of material to be extruded such as raw rubber, or the like by ejecting the material to be extruded through a mouth piece by means of an extruding roll. This extruder comprises mouth piece moving means for moving a mouth piece in a radial direction of an extruding roll to make the mouth piece approach, or separate from, the circumferential surface of the extruding roll, mouth piece positioning means for positioning the mouth piece when the mouth piece is held apart from the extruding roll, and mouth piece stocking means for preliminarily stocking various kinds of mouth pieces. Shaping of the material to be extruded is effected when the mouth piece has been brought close to the circumferential surface of the extruding roll by the mouth piece moving means and it has been positioned by the mouth piece positioning means. However, for the exchange of the mouth piece, the mouth piece is separated from the extruding roll by the mouth piece moving means, and is exchanged with one of the mouth pieces stocked in the mouth piece stocking means. Thereafter, the new mouth piece is brought close to the circumferential surface of the extruding roll by the mouth piece moving means, and is positioned by the mouth piece positioning means. The mouth piece exchange work is executed automatically without the aid of any human labor.