Earth working – Automatic power control – Draft responsive
Patent
1993-02-09
1994-12-13
Reese, Randolph A.
Earth working
Automatic power control
Draft responsive
137 45, 1722605, A01B 6311
Patent
active
053722043
ABSTRACT:
A power hitch relief system for a three-point hitch used in tractors and similar vehicles. The power hitch relief system includes an inclination detector in the form of a weight pivotally mounted to the tractor frame. The weight is also coupled to a relief valve of a hydraulic circuit which supplies power to the hitch. The weight pivots when the tractor pitches backwardly to open the relief valve and relieve fluid pressure in the hydraulic circuit. This prevents the tractor from overturning backwardly. A catch keeps the relief valve open to prevent oscillations until reset.
REFERENCES:
patent: 1272285 (1918-07-01), Manley
patent: 2405980 (1946-08-01), Sands et al.
patent: 2442458 (1948-06-01), Ferguson
patent: 2790365 (1957-04-01), Bunting
patent: 3529872 (1970-09-01), Mitton
patent: 3573221 (1971-10-01), Romig
patent: 3582153 (1971-06-01), Pitcher
patent: 3786871 (1974-01-01), Long et al.
patent: 3876012 (1975-04-01), Regier
patent: 3901323 (1975-08-01), Mueller
patent: 4132273 (1979-01-01), Mortonson et al.
patent: 4266616 (1981-05-01), Mueller
patent: 4289208 (1981-09-01), Roncarolo
patent: 4299530 (1981-11-01), Schaeff
patent: 4425970 (1984-01-01), Dwyer et al.
patent: 4508178 (1985-04-01), Cowell et al.
patent: 4664404 (1987-05-01), Schultz
patent: 4825956 (1989-05-01), Kanato et al.
patent: 5224551 (1993-07-01), Sukup
Reese Randolph A.
Warnick Spencer
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