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. 19, 1978
Filed:
Feb. 08, 1978
Applicant:
Inventors:
Assignee:
Kabushiki Kaisha Komatsu Seisakusho, Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
E01C / ;
U.S. Cl.
CPC ...
404 98 ; 298 27 ;
Abstract
A paving material agitation apparatus for use in water channel forming machines comprising a hopper adapted to accommodate therein paving materials to be laid, a plurality of first screws spaced apart with each other in said hopper, a plurality of rotary drives each being secured to one end of said first screws, respectively, an agitation impeller rotatably engaged with one of said first screws, a rotary shaft rotatably supported by said hopper, said agitation impeller being fixedly secured to said rotary shaft so as to be rotated therewith, and a second screw formed on said rotary shaft.