Accession Number : ADD014955

Title :   In-Line Hydraulic Dashpot.

Descriptive Note : Patent Application, Filed 25 Mar 91,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Moody, Paul E

Report Date : 25 Mar 1991

Pagination or Media Count : 16

Abstract : An in-line hydraulic dashpot is disclosed that effectively decelerates the piston of a power cylinder by controllably choking off the oil which is providing pressure to the piston. The in-line hydraulic dashpot of the invention includes a valve spool member movable between an open and closed position along a fluid flow path that supplies oil to the power cylinder. An actuator rod is cooperative with the valve spool member and the piston shaft of the power cylinder to move the valve spool member between its open and closed positions. The in-line hydraulic dashpot eliminates the clashing of mechanical parts and therewith eliminates the noise that would otherwise be generated thereby. The in-line hydraulic dashpot of the present invention makes possible the adaptation of a fixed stroke power cylinder to applications that call for a variable stroke length.

Descriptors :   ACTUATORS, CLOSURES, CYLINDRICAL BODIES, DASHPOTS, FLOW FIELDS, FLUID FLOW, HYDRAULICS, LENGTH, MECHANICAL COMPONENTS, OILS, PISTONS, POSITION(LOCATION), POWER, PRESSURE, RODS, SHAFTS(MACHINE ELEMENTS), SUPPLIES, VARIABLES

Subject Categories : Hydraulic and Pneumatic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE