Trip apparatus for moldboard assembly

Details Trip apparatus for moldboard assembly Trip apparatus for moldboard assembly

1991-09-30

1993-03-09

Reese, Randolph A.

Excavating

Snow or ice removing or grooming by portable device

Vehicle mount with obstacle responsive trip, or yieldable tool

37235, 37270, E01H 504

Patent

active

051917297

ABSTRACT:
Safety apparatus for use in a moldboard assembly having a plurality of horizontally aligned trip blade units pivotally supported in the bottom of the moldboard frame so that the units move independently between a downwardly extended operative position and a rearwardly extended, fully tripped position. A biasing mechanism urges each unit into the operative position with a predetermined amount of force. A control mechanism further regulates the biasing force exerted on each unit so that the biasing force first increases as the unit moves out of the operative position and then decreases as the unit continues to move into the fully tripped position. The force exerted on each unit when in the fully tripped position is considerably less than that used to hold the unit in the operative position thereby preventing the assembly from lifting as it moves over an obstacle.

REFERENCES:
patent: 3014289 (1959-01-01), Torrey
patent: 4255878 (1981-03-01), Mahler
patent: 4307523 (1981-12-01), Reissinger et al.

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