Load reliever for plow moldboard

Details Load reliever for plow moldboard Load reliever for plow moldboard

2005-05-17

2005-05-17

Petravick, Meredith (Department: 3671)

Excavating

Snow or ice removing or grooming by portable device

Vehicle mount with obstacle responsive trip, or yieldable tool

C037S266000

Reexamination Certificate

active

06892480

ABSTRACT:
The invention alleviates wear on a plow moldboard by achieving a reduction in the effective weight of the moldboard on the roadway. One or more elastic links are interposed between the moldboard and the lifting arm which elevates and lowers the moldboard. The elastic links may be tensioned to such a degree that they serve as a counterweight for the moldboard, transmitting all or most of its weight to the lift arm and the plowing vehicle. The effective weight of the moldboard is thus reduced to such a degree that the lower edge of the moldboard bears against the roadway with little or no force, and it skids or slides along the roadway rather than grinding against it.

REFERENCES:
patent: 211710 (1879-01-01), Dabus
patent: 1609353 (1926-12-01), Heflin
patent: 4976054 (1990-12-01), Jones
patent: 5482258 (1996-01-01), Clauson et al.
patent: 5778567 (1998-07-01), Jager et al.
patent: 6088937 (2000-07-01), DiClementi et al.
patent: 6484421 (2002-11-01), Donoghue
patent: 6526677 (2003-03-01), Bloxdorf et al.

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