Accession Number : ADD015528
Title : In-Line Hydraulic Dashpot.
Descriptive Note : Patent, Filed 25 Mar 91, patented 6 Oct 92,
Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC
Personal Author(s) : Moody, Paul E
Report Date : 06 Oct 1992
Pagination or Media Count : 6
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 tile valve spool member between its open and closed positions. The in-line hydraulic dashpot eliminates the clashing of mechanical parts and there with 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 : *DASHPOTS, *HYDRAULICS, *PISTONS, *PATENTS, ACTUATORS, ADAPTATION, FLOW, FLUID FLOW, FLUIDS, INVENTIONS, LENGTH, NOISE, OILS, PATHS, POWER, PRESSURE, RODS, SUPPLIES, TILES, VALVES, VARIABLES
Subject Categories : Hydraulic and Pneumatic Equipment
Distribution Statement : APPROVED FOR PUBLIC RELEASE