Brushing – scrubbing – and general cleaning – Implements – Mason's trowel or float
Patent
1997-01-10
1998-04-14
Chin, Randall
Brushing, scrubbing, and general cleaning
Implements
Mason's trowel or float
404 97, B05C 1710, E01C 1912
Patent
active
057377952
ABSTRACT:
A bull float for working and finishing concrete and the like is provided. The bull float includes a blade. The blade has a first working surface for contacting the work to be troweled. The first working surface has a leading edge and a trailing edge. The blade also has a leading edge member disposed at the leading edge and carries a second working surface disposed at an angle to the first working surface. The blade further includes a trailing edge member disposed at the trailing edge and carries a third working surface disposed at an angle to the first working surface. The bull float includes a planar metal sheet having a front edge and a rear edge, and having its mid area bowed outwardly relative to the working surface. The front and rear edge of the sheet are secured at points fixed with respect to the leading edge and the trailing edge. The sheet exerts uniform opposing bias forces to the leading edge and to the trailing edge of the blade to counteract residual compressive stresses developed on the first working surface during use of the float.
REFERENCES:
patent: 1021557 (1912-03-01), Runner
patent: 1306135 (1919-06-01), Bricker
patent: 1501192 (1924-07-01), Severns
patent: 1544368 (1925-06-01), Brennan
patent: 1713513 (1929-05-01), Abram
patent: 1763066 (1930-06-01), Rooney
patent: 1797484 (1931-03-01), Smith
patent: 1952398 (1934-03-01), Tullis
patent: 2018890 (1935-10-01), Heltzel
patent: 2834199 (1958-05-01), Freeman
patent: 3082460 (1963-03-01), Haivala
patent: 3613243 (1971-10-01), Baker
patent: 3729765 (1973-05-01), Peterson
patent: 3936210 (1976-02-01), Oehlerking
patent: 4397581 (1983-08-01), Jarvis
patent: 4399583 (1983-08-01), Jarvis
patent: 4431336 (1984-02-01), Nightengale et al.
patent: 4663796 (1987-05-01), Helling et al.
patent: 4669970 (1987-06-01), Perry
patent: 4722637 (1988-02-01), Glesmann
patent: 4766635 (1988-08-01), DeVitis
patent: 4856932 (1989-08-01), Kraft
patent: 4892437 (1990-01-01), Kraft
patent: 5115536 (1992-05-01), Jarvis
patent: 5234281 (1993-08-01), Somero et al.
patent: 5467496 (1995-11-01), Jarvis
Chin Randall
Marshalltown Trowel Company
LandOfFree
Stiffened bull float apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Stiffened bull float apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stiffened bull float apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-625803