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:
Jun. 01, 1982
Filed:
Apr. 23, 1980
Applicant:
Inventors:
Yasushi Nakahara, Hachioji, JP;
Tadasuke Ohtomo, Hino, JP;
Masahiro Yurugi, Tokyo, JP;
Takumi Naitoh, Tokyo, JP;
Kenichi Kaiho, Hino, JP;
Assignee:
Kajima Corporation, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
B65G / ; B65G / ; B65G / ;
U.S. Cl.
CPC ...
414288 ; 193 / ; 193 32 ; 222544 ;
Abstract
The disclosed method and apparatus for the downward transfer of concrete eliminate separation of concrete ingredients and drop impact of concrete during concrete placing across a high head, by intermittently feeding concrete to an air-tight chute from the top end thereof while normally keeping the chute top end closed airtightly, the chute having at least one flexible portion adapted to be collapsible upon removal of concrete thereform.