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:
Nov. 17, 1981
Filed:
Jun. 22, 1979
Norimoto Sato, Ogawahigashi, JP;
Minoru Miyaoka, Hachioji, JP;
Shin Yamasaki, Tokorozawa, JP;
Kimio Inoue, Kobe, JP;
Akimasa Kuriyama, Kobe, JP;
Tsugushi Fukui, Miki, JP;
Toshihiro Asai, Kobe, JP;
Bridgestone Tire Co., Ltd., Tokyo, JP;
Kobe Steel, Ltd., Kobe, JP;
Abstract
An internal mixer includes a pair of rotors each having spiral vanes adapted to advance materials in the axial direction of the rotors. More particularly, each of the respective rotors has a long vane and a short vane and each of the vanes is of a spiral direction. The spiraling or screwing direction of the long vane is the same as the screwing direction of the short vane on the respective rotors. The flow of the materials along the axial direction differs from one rotor to another. Also disclosed is a mixing and kneading machine including a pair of parallel rotors each having a long vane and a short vane, the long vane extending spirally about the center lines of the rotors and the short vane extending along the center lines of the rotors. Flowing behavior of material to be mixed and kneaded occurs in opposing directions between both rotors.