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:
Sep. 13, 1983
Filed:
Jul. 09, 1981
Takeshi Fukushima, Ichikawashi, JP;
Kiyoshi Sakagami, Funabashishi, JP;
Yoshihiro Ikegami, Chibashi, JP;
Pacific Metals, Co., Ltd., Tokyo, JP;
Abstract
A method for producing concrete in a multi-layer pan type mixer comprising upper and lower mixers having upper and lower mixing tanks driven by separate motors and a discharge gate communicating the upper mixing tank with the lower mixing tank, said method comprising supplying sand, cement and primary mixing water to the upper mixing tank and performing primary mixing therein to obtain a mortar, discharging the mortar into the lower mixing tank, simultaneously supplying gravel and secondary mixing water to the lower mixing tank to disperse the gravel into the mortar, and performing secondary mixing therein.