Earth working – With drive means for tool or cleaner – Guided by walking attendant
Reexamination Certificate
2005-04-26
2005-04-26
Pezzuto, Robert E. (Department: 3671)
Earth working
With drive means for tool or cleaner
Guided by walking attendant
C172S013000, C172S425000, C475S184000
Reexamination Certificate
active
06883616
ABSTRACT:
A walk-behind trenching implement has a side mounted rotary trenching tool for creating a profiled trench into the surface of the earth, which can also be used as an implement to edge landscape beds. The trenching implement is powered by an engine that delivers rotational power in an unbalanced manner to the wheel adjacent to the rotatable trenching tool. The wheel opposite to the trenching tool is can be non-powered to freely rotate as the implement is moved across the surface of the ground, or braked to unbalance power delivery through a differential. This unbalanced propulsion drive induces a skewing action into the operation of the implement that counterbalances the opposite skewing action resulting from the operation of the trenching tool to provide a more smoothly operating implement. A trenching tool having a configuration conducive to profile modification allows flexibility in the desired shape of the trench being formed.
REFERENCES:
patent: 3593802 (1971-07-01), De Lange, Jr.
patent: 3908292 (1975-09-01), Harris
patent: 4002205 (1977-01-01), Falk
patent: 4344374 (1982-08-01), Gangluff et al.
patent: 4429477 (1984-02-01), Tice et al.
patent: 4463544 (1984-08-01), Carsello et al.
patent: 4645011 (1987-02-01), Feikema et al.
patent: 4930296 (1990-06-01), Takei et al.
patent: 5101685 (1992-04-01), Beck
patent: 5174686 (1992-12-01), Raymond
patent: 5212896 (1993-05-01), Hillard et al.
patent: 5226248 (1993-07-01), Pollard
patent: 5503250 (1996-04-01), Schantz et al.
patent: 5915492 (1999-06-01), Yates et al.
patent: 6125943 (2000-10-01), Valois
patent: 6135220 (2000-10-01), Gleasman et al.
patent: 6266900 (2001-07-01), Bizzell
patent: 6413181 (2002-07-01), Okada
patent: 6449882 (2002-09-01), Kono et al.
patent: 6457267 (2002-10-01), Porter et al.
patent: 6516545 (2003-02-01), Jenkins, Jr.
patent: 6651361 (2003-11-01), Porter et al.
patent: 20030201134 (2003-10-01), Ishii et al.
Miller Law Group PLLC
Pechhold Alexandra K.
Pezzuto Robert E.
Turf Teq, LLC
LandOfFree
Walk-behind landscape edger/trencher does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Walk-behind landscape edger/trencher, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Walk-behind landscape edger/trencher will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3432116