Obstacle bypass system for concrete finishing tools

Road structure – process – or apparatus – Apparatus – Means to agitate material

Patent

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Details

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.

REFERENCES:
patent: 2314985 (1943-03-01), Jackson
patent: 2542979 (1951-02-01), Barnes
patent: 2651980 (1953-09-01), Wells
patent: 2693136 (1954-11-01), Barnes
patent: 3095789 (1963-07-01), Melvin
patent: 3572227 (1971-03-01), Poulsen
patent: 3907451 (1975-09-01), Fisher et al.
patent: 4030873 (1977-06-01), Morrison
patent: 4105355 (1978-08-01), King
patent: 4316715 (1982-02-01), Allen
patent: 4340351 (1982-07-01), Owens
patent: 4349328 (1982-09-01), Allen
patent: 4363618 (1982-12-01), Allen
patent: 4375351 (1983-03-01), Allen
patent: 4386901 (1983-06-01), Morrison
patent: 4427358 (1984-01-01), Stilwell
patent: 4431336 (1984-02-01), Nightengale
patent: 4650366 (1987-03-01), Morrison
patent: 4702642 (1987-10-01), Musil
patent: 4798494 (1989-01-01), Allen
patent: 5344254 (1994-09-01), Sartain
Allen Engineering Corp. (Brochure), Screed Accessories (No Date).

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