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:
Oct. 11, 1977
Filed:
May. 27, 1976
Applicant:
Inventor:
Henry Ellwood, Rochdale, EN;
Assignee:
USM Corporation, Boston, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
B29B / ;
U.S. Cl.
CPC ...
366 97 ; 366298 ;
Abstract
A through feed mixer for mixing and plasticizing a variety of materials has a pair of coaxially disposed rotors in a mixing chamber. The rotors are without helical twist but each have a mixing section which is derived from a regular n-sided polygon comprising n similar peripheral portions, n preferably being 3. Each rotor may have a gradual taper to its body portions. The mixer also includes a feeding device adapted to supply material to be mixed to an inlet portion of the mixing chamber under substantially constant pressure, and an outlet end portion transferring mixer material to an extrusion device.