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Hydraulic Damping Cylinder

IP.com Disclosure Number: IPCOM000097827D
Original Publication Date: 1961-Aug-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Stoddard, DL: AUTHOR

Abstract

This system provides a means for damping a hydraulic actuator which is positioned by a hydraulic adder. With this system, a single damping cylinder 1, a damping valve 2 and a set of flip flop type adders 3 are sufficient to damp an actuator whether it moves its full stroke or not.

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Hydraulic Damping Cylinder

This system provides a means for damping a hydraulic actuator which is positioned by a hydraulic adder. With this system, a single damping cylinder 1, a damping valve 2 and a set of flip flop type adders 3 are sufficient to damp an actuator whether it moves its full stroke or not.

In this system the desired adder valve 5 is positioned by solenoid 4, so that hydraulic supply pressure is applied to adder 3. This action causes discharge of a metered quantity of hydraulic fluid from the selected adder into line 6. This quantity of fluid then passes through the damping valve 2 and a check valve 7 into the damping cylinder 1. Here it displaces the damping piston 8 to the left a distance representative of the sum of the values of the adders selected. After the damping cylinder is loaded, the damping valve 2 is switched to the right by its solenoid 9 to allow entry of fluid to the left end of the damping cylinder. The direction control valve 10 and the detent valve 11 are then positioned to direct fluid from the pressure supply to the desired end (in this case, the left end) of the slave cylinder 12. As slave piston 13 is displaced to its new position, the fluid discharged from the slave cylinder 12 is directed through line 14 and damping valve 2 to the left side of the damping cylinder.

The damping piston 8 is thus displaced to the right and the fluid in the right side of the damping cylinder is discharged through damping orifices 15 to sump....