Power plants – Pressure fluid source and motor – Pulsator
Patent
1991-04-18
1993-04-13
Look, Edward K.
Power plants
Pressure fluid source and motor
Pulsator
60568, 60594, 269 32, 92107, B60T 1722
Patent
active
052011780
ABSTRACT:
A hydra-jack screw apparatus is provided for exerting a force against an object, for adjusting the magnitude of the force exerted against the object, and for providing a visual indication of the magnitude of the force exerted against the object. The apparatus is comprised of a base member housing a piston chamber, a jack screw extending from the bottom of the base member, a fluid pressure gauge mounted on the base member, and a pair of pistons received in the piston chamber for reciprocating movement. One of the pistons has a piston rod that extends through a center bore of the jack screw and engages against an object against which a force is to be applied. The second piston has a piston rod that extends from the piston chamber of the base member and is attached to a manual forced adjusting knob. A volume of fluid is contained in the piston chamber between the first and second pistons, and as the manual knob is turned, the pressure of the volume of fluid is adjustably increased or decreased. The increasing or decreasing fluid pressure exerts a force on the first piston that is transmitted through the first piston rod and is applied against the object engaged by the piston rod. The pressure gauge is in fluid communication with the volume of fluid and provides a visual indication of the magnitude of force exerted on the object by the first piston rod.
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Look Edward K.
Mattingly Todd
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