发明名称 Apparatus for bending concrete curbing
摘要 Apparatus for initially bending pairs of spaced parallel concrete curbing immediately after it has been cast and while still in a zero slump state. The apparatus includes a blade-like tool adapted to extend into the V-shaped space which normally exists between opposed pairs of concrete curbing when the latter emerge from curb molding apparatus, said tool including opposed sidewalls which may be flexibly bent or distorted away from each other at pre-selected portions along the longitudinal extent of such tool so as to simultaneously and oppositely bend said curbing pair. Means for distorting the flexible sidewalls of the tool are provided in the form of rollers adapted to contact interior portions of the sidewalls and be forced downwardly with respect thereto, thereby increasing the distance between the sidewalls at such preselected locations.
申请公布号 US4199312(A) 申请公布日期 1980.04.22
申请号 US19780891129 申请日期 1978.03.27
申请人 DURASTONE 发明人 BERETTA, ANGELO V;BERETTA, DAVID
分类号 B28B11/00;(IPC1-7):B28B11/00 主分类号 B28B11/00
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