Road structure – process – or apparatus – Apparatus – With means for profile shaping – e.g. – crown
Patent
1982-02-08
1984-02-14
Leppink, James A.
Road structure, process, or apparatus
Apparatus
With means for profile shaping, e.g., crown
404114, 74 87, E01C 1938
Patent
active
044313365
ABSTRACT:
A vibrating float for prefinishing concrete. The float includes a float member with a planar surface, an elongated handle for manipulating the float member over the concrete with its planar surface in contact with the surface of the concrete, and a pair of pneumatically driven vibrators. The vibrators are mounted on the upper surface of the float member on either side of the centrally attached handle and can be adjusted easily and quickly to vary the vibrational pattern of the float member for the most efficient and effective working of the particular concrete mix. Each vibrator has an exterior housing member with a rotatable mounted collar member within it. The collar member is cylindrical and end pieces are provided to confine a ball member within the collar member. The housing member has an air hole through it and the collar member has at least two air holes in it of different sizes. By rotating the collar member relative to the housing member, the two holes in the collar member can be selectively placed in fluid communication with the air hole of the housing member. In this manner, the volume of air passing into the interior of the collar member can be varied to propel the ball member about the central axis of the collar member at different rates to thereby create differing vibrational patterns in the float member.
REFERENCES:
patent: 2411317 (1946-11-01), Day
patent: 2514626 (1950-07-01), Clipson
patent: 2643595 (1953-06-01), Jackson
patent: 2868094 (1959-01-01), Andersson
patent: 3376798 (1968-04-01), Bodine
patent: 3515042 (1970-06-01), Austin
patent: 3515043 (1970-06-01), Austin
patent: 3547014 (1970-12-01), Austin
Burrows Harvey P.
Nightengale Stanley A.
Carson W. Scott
Hjorth Beverly E.
Leppink James A.
LandOfFree
Concrete prefinishing tool does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Concrete prefinishing tool, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Concrete prefinishing tool will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2372555