Road structure – process – or apparatus – Apparatus – Screed or drag
Patent
1993-12-21
1995-12-19
Neuder, William P.
Road structure, process, or apparatus
Apparatus
Screed or drag
E01C 1922
Patent
active
054763428
ABSTRACT:
A concrete placing, screeding and finishing tool that bypasses columns, curbs and other obstacles during concrete finishing. An elongated finishing body comprises retractable bypass wings. The body comprises a front strike-off, a trailing float and a primary eccentrically weighted shaft extending through the body for vibrating it when vigorously rotated, The bypass is coupled to an outer end of the body and may be deployed either in an active position, aligned with the body for finishing concrete, or in a displaced clearance orientation out of contact with the concrete, The bypass comprises a finishing wing, a linkage system and a vibration mechanism, The wing comprises a forward strike-off, a trailing float and a reinforcing tread plate extending from the strike-off to the bull float, The linkage system comprises a bracket secured to an end of the body and a pair of locking, slidable struts extending from the bracket to the wing. Pivot bolts connect the strike-off of the wing to the strike-off of the body and the bull float of the wing to the bull float of the body. The preferred vibration mechanism comprises a secondary, eccentrically weighted shaft for vibrating the wing when rotated and a coupling releasably joining the secondary shaft to the primary shaft when the wing is actively deployed. The coupling comprises semicylindrical primary and secondary shaft ends and a spring biased collar slidably sleeved on one of the shafts for selectively coaxially coupling the semicylindrical ends.
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: 4030873 (1977-06-01), Morrison
patent: 4105355 (1978-08-01), King
patent: 4249327 (1981-02-01), Allen
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: 4650366 (1987-03-01), Morrison
patent: 4795332 (1989-01-01), Davis
patent: 4798494 (1989-01-01), Allen
patent: 4818140 (1989-04-01), Carlson
patent: 4931008 (1990-06-01), Morrison
Carver Stephen D.
Keisling Trent C.
Neuder William P.
LandOfFree
Obstacle bypass system for concrete construction does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Obstacle bypass system for concrete construction, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Obstacle bypass system for concrete construction will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-988700