Snowplow assembly with adjustable-bias trip mechanism

Details Snowplow assembly with adjustable-bias trip mechanism Snowplow assembly with adjustable-bias trip mechanism

1997-12-22

2000-06-13

Shackelford, H.

Excavating

Snow or ice removing or grooming by portable device

Vehicle mount with obstacle responsive trip, or yieldable tool

37279, 37407, E01H 506

Patent

active

060733713

ABSTRACT:
A vehicle snowplow system with an adjustable-bias tripping mechanism. The system includes a snowplow blade or moldboard which is pivotally mounted to a frame, the latter being adapted for mounting to a vehicle. The moldboard "trips" or pivotally moves between a normal plowing position and a displaced position when a lower region of the moldboard contacts a rigid obstruction. The system includes at least one biasing assembly operable to bias the moldboard toward the normal position with a biasing force, the biasing assembly configured so as to provide an adjustment to the biasing force to compensate for variances in roadway or environmental conditions.

REFERENCES:
patent: 2103775 (1937-12-01), Frink
patent: 2697289 (1954-12-01), Standfuss
patent: 3626614 (1971-12-01), Kahlbacher
patent: 3650054 (1972-03-01), Hanson
patent: 4215494 (1980-08-01), Farrell et al.
patent: 5109618 (1992-05-01), Grubler et al.
patent: 5121562 (1992-06-01), Feller
patent: 5191729 (1993-03-01), Verseef
Photograph of rear suspension of a 1991 Yamaha Virago 750 motorcycle (1991) .

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