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:
Jan. 11, 1977
Filed:
Aug. 13, 1975
John Paul Porter, Cuyahoga Falls, OH (US);
The B. F. Goodrich Company, Akron, OH (US);
Abstract
A fluidizing mixer works a mixture of materials, such as polyvinyl chloride (PVC) resin, together with plasticizers and liquid stabilizers and the batch is then discharged at the end of a work cycle of operation. The mixer employs an electrically energized driver which drives a working member, such as a high speed mixing blade, such that electrical energy is expended as work is being performed on the material. During each work cycle of operation the amount of expended electrical energy is sensed for purposes of providing a work signal having a value in accordance with the energy being expended. A work cycle is terminated when the amount of energy being expended to work the material decreases by a given amount.