Road structure – process – or apparatus – Apparatus – Means to agitate material
Patent
1994-04-22
1996-07-09
Husar, John
Road structure, process, or apparatus
Apparatus
Means to agitate material
404118, E01C 1938
Patent
active
055338313
ABSTRACT:
A concrete finishing tool that quickly changes in length to selectively bypass columns, curbs and other obstacles during concrete finishing includes a unique foldable bypass system at an extremity that can be folded between extended and retracted positions. When actively deployed the bypass is aligned for finishing concrete. In the retracted position it assumes a clearance orientation out of contact with the concrete. The bypass comprises a finishing wing for contacting concrete, a linkage system and a vibrator. The wing may comprise a forward strike-off and a trailing float. The linkage system comprises a pair of abutting links interconnected at an axially offset intermediate pivot point. One of the links is pivotally attached to the tool and the other link is pivotally attached to the wing. When the linkage system folds the links are moved between length additive and length subtractive orientations. Preferably the links pass overcenter when they are manipulated to yieldably lock the wing in either the deployed or retracted positions.
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Allen Engineering Corp. (Brochure), Screed Accessories (No Date).
Allen Engineering Corporation
Carver Stephen D.
Husar John
Keisling Trent C.
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