Metal working – Method of mechanical manufacture – Disassembling
Reexamination Certificate
2008-12-17
2010-06-29
Bryant, David P (Department: 3726)
Metal working
Method of mechanical manufacture
Disassembling
C029S402030, C029S428000, C056S012700, C056S013600, C056S295000
Reexamination Certificate
active
07743478
ABSTRACT:
A mowing device including a disc, the disc providing a mount for at least one knife, said knife being pivotably mounted to said disc by a pivot pin, said pivot pin defining a mounting axis, such that the knife can rotate about said pivot pin between a first extended position and any retracted position, said disc being constructed of a basic material thickness and comprising a mounting surface; said mowing device including a knife adapter comprising a cylindrical aperture and a projection; said pivot pin comprising a first cylindrical section of a first diameter to fit into said cylindrical aperture in said knife adapter, and a second cylindrical section, of a second diameter, with a groove defined by a groove width and a pin section thickness at the groove of a dimension less than said second diameter; said mowing device including a retainer constructed of a material thickness equal to or less than the width of said groove, with a key-hole shaped aperture defined by a first circular section with a first inside diameter larger than said second diameter of said pin and a slot shaped section with a width that is greater than said pin section thickness but less than said second diameter of said pivot pin; wherein said slot-shaped section of the retainer engages said groove of said pivot pin to retain said pivot pin while said projection of said knife adapter engages said retainer.
REFERENCES:
patent: 2939264 (1960-06-01), Kontis
patent: 3321894 (1967-05-01), Ingram
patent: 3452524 (1969-07-01), Guetterman
patent: 3755999 (1973-09-01), Meyer
patent: 3918241 (1975-11-01), Stillions
patent: 4229933 (1980-10-01), Bernard
patent: 4313297 (1982-02-01), Maier
patent: 4815264 (1989-03-01), Mijnders
patent: 4860525 (1989-08-01), Chee
patent: 5271212 (1993-12-01), Anderson
patent: 5622035 (1997-04-01), Kondo
patent: 5626007 (1997-05-01), Harrington
patent: 5791131 (1998-08-01), Hill
patent: 6055798 (2000-05-01), Fulmer
patent: 6182430 (2001-02-01), Blarek
patent: 6305153 (2001-10-01), Neuerburg
patent: 6357215 (2002-03-01), Thorne
patent: 6367235 (2002-04-01), Moynihan
patent: 6829878 (2004-12-01), Hoffman
patent: 2002/0194829 (2002-12-01), Petersen
patent: 2004/0177484 (2004-09-01), Thompson
patent: 0517645 (1992-12-01), None
Bentzinger Rustin V.
Koorn Martin
Thompson Kent
Bryant David P
Sturm & Fix LLP
Taousakis Alexander P
Vermeer Manufacturing Co.
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