Brakes – Internal-resistance motion retarder – With means for locking parts together temporarily
Patent
1978-05-15
1980-12-02
Halvosa, George E. A.
Brakes
Internal-resistance motion retarder
With means for locking parts together temporarily
172261, 172439, 177208, 248354H, 280482, 188312, 188313, 188314, 188318, 188322, F16F 944
Patent
active
042366135
ABSTRACT:
An elongated coupling member is connectable to the upper link of a three point tractor lift and to an implement carried by the lift, such as a spreader. The member includes a piston slideably mounted in a cylinder and a hydraulic circuit between a space at each side of the piston. The piston can be adjusted to a set position in which the relative positions of the piston and cylinder are maintained by hydraulic fluid within the circuit and spaces. An overload device, such as a spring biased, one-way valve, is included in the circuit so that upon overload, the piston moves, usually to lengthen the coupling member and allow fluid to flow from one space to the other. In one version, an overflow space or reservoir is in the circuit to accomodate excess fluid when the piston is shifted and one space is larger than the other. A pressure gauge in the hydraulic circuit indicates the fluid pressure in the circuit and since the pressure decreases incrementally as material is being spread from the implement, a measure of the amount of material dispensed can be gained.
REFERENCES:
patent: 1882628 (1931-09-01), Lincoln
patent: 1995996 (1935-03-01), Moore
patent: 2405980 (1946-08-01), Sands et al.
patent: 2635868 (1953-04-01), Reid et al.
patent: 3286797 (1966-11-01), Leibfritz et al.
patent: 3905425 (1975-09-01), Jackson
patent: 3929057 (1975-12-01), Kondo
patent: 4084668 (1978-04-01), Rybicki
Halvosa George E. A.
Mason William B.
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