Motors: expansible chamber type – Constantly applied motive fluid with controlled venting – Fluid vented through working member
Patent
1973-12-05
1976-01-06
Maslousky, Paul E.
Motors: expansible chamber type
Constantly applied motive fluid with controlled venting
Fluid vented through working member
91 51, 91216A, 91376R, F01B 1502, F15B 910
Patent
active
039304361
ABSTRACT:
A servo device for steering gears for vehicles and ships is adapted to be coupled in a mechanical connection between said gear or the like and the steering rod or the like operated thereby. The device comprises a pair of opposed cylinder-and-piston units each having a working chamber, defined by the respective piston and adapted to be supplied pressurized fluid from a suitable source during control by valve means responsive to a movement of the output member of said gear and the resistance thereagainst of the steering rod operated thereby so as to amplify the power for overcoming said resistance by means of the pressure fluid in one of said pair of working chambers. The two pistons in the units are rigidly secured to each other and provided with an inlet passage for the pressure fluid to the working chambers and wherein the valve device of each of the units comprises a valve member, adapted normally to close a corresponding pressure fluid outlet from the working chamber to a return conduit to the pressure fluid source but to be actuated by movements of the output member of the gear under the intermediation of a transfer means for actuating in its turn a dampening element with a restricted fluid passage.
REFERENCES:
patent: 2317383 (1943-04-01), Hull
patent: 2432502 (1947-12-01), Bentley et al.
patent: 2867233 (1959-01-01), Adelson
patent: 2977985 (1961-04-01), Ericson et al.
patent: 3045651 (1962-07-01), Ljunggren
patent: 3113590 (1963-12-01), Olson
patent: 3799202 (1974-03-01), McAvby
Maslousky Paul E.
Volvo Flygmotor Aktiebolag
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