Construction bucket

Details Construction bucket Construction bucket

2008-11-26

2009-12-15

Pezzuto, Robert E (Department: 3671)

Excavating

Scoop or excavating and transporting container

Scoop or bucket structure, per se

Reexamination Certificate

active

07631446

ABSTRACT:
A construction bucket comprising a rear wall, two side walls, a bottom plate, and two side arms. Each side arm comprises a first hydraulic cylinder, a metal tube and an extension. The extension fits into the metal tube, and each side arm is positioned directly on top of one of the two side walls. An elongated blade that is attached to the extension of each side arm, and the first hydraulic cylinders extend and retract the extension within the metal tube, thereby causing the elongated blade to extend and retract. The present invention further comprises two second hydraulic cylinders, which cause the elongated blade to be raised or lowered in relation to the front edge of the bottom plate of the construction bucket.

REFERENCES:
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patent: 5515625 (1996-05-01), Keigley
patent: 5564885 (1996-10-01), Staben, Jr.
patent: 5839212 (1998-11-01), Brinker
patent: 5940996 (1999-08-01), Cummings
patent: 6182385 (2001-02-01), Knutson
patent: 6470604 (2002-10-01), Foster et al.
patent: 6526678 (2003-03-01), Waddington, Jr.
patent: 6589007 (2003-07-01), Burton
patent: 6718662 (2004-04-01), Schaff
patent: 6913086 (2005-07-01), Stevens
patent: 2002/0028126 (2002-03-01), Ihm
patent: 2002/0044862 (2002-04-01), Burton
patent: 2004/0040725 (2004-03-01), Stevens

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