Electrical transmission or interconnection systems – Miscellaneous systems – For particular load device
Patent
1984-04-24
1986-02-18
Pellinen, A. D.
Electrical transmission or interconnection systems
Miscellaneous systems
For particular load device
172 10, 172 7, A01B 63112
Patent
active
045715009
ABSTRACT:
The position control and force control of a device mounted to a tractor, in particular for controlling the depth penetration of a plough, is supplemented by a lowering speed-responsive control to limit the lowering speed to a predetermined maximum value in order to increase safety of operation. Activating and disabling the lowering speed signal takes place in response to operating a mode select switch provided for the position control and force control as well as in response to a high-speed actuation of the mounted device. Furthermore, the lifting and lowering function of the hydraulic jack of the mounted device may be locked to prevent undesired motions of the mounted device when the system is put in operation.
REFERENCES:
patent: 3732933 (1973-05-01), Foxwell et al.
patent: 3757131 (1973-09-01), Krutz et al.
patent: 4132273 (1979-01-01), Mortonson et al.
patent: 4300638 (1981-11-01), Katayama et al.
Deboer Todd E.
Mannesmann Rexroth GmbH
Pellinen A. D.
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