Expansible chamber devices – With means to control flow of non-working arresting fluid...
Patent
1987-05-11
1988-07-26
Garrett, Robert E.
Expansible chamber devices
With means to control flow of non-working arresting fluid...
92 67, 92 68, 248636, 248 49, 248DIG1, F15B 1522, F16M 1300
Patent
active
047592621
ABSTRACT:
The invention is an apparatus that allows a motor to move in any one of three linear directions, but it restrains rotary motion of the motor housing. In practice, the motor is used for driving a pump or some other rotary motion device. The device includes a lever arm fastened to the motor housing and a hydraulic cylinder pivotally connected to each end of the arm and to a support member. Each cylinder is divided into two chambers by a piston head, and hydraulic lines connect the chambers of one cylinder to the chambers of the other cylinder. When the pump (or other rotary motion device) tends to cause rotational movement of the motor housing, and lever arm, each cylinder responds to this rotational load by trying to displace fluid (oil) from one cylinder to the other. Since each cylinder tries to displace an equivalent volume of oil toward the other cylinder, through a common conduit, displacement of the oil is not possible. This action restrains rotational motion of the motor housing and lever arm, but allows them to move in any one of three linear directions.
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Clausen V. Dean
Denion Thomas
Garrett Robert E.
The Dow Chemical Company
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