Linear hydraulic damper

Claim 1

A LINEAR TYPE OF HYDRAULIC DAMPER COMPRISING AN ELONGATED, AXIALLY EXTENDING, ONE-PIECE CASE, A PLURALITY OF SUBSTANTIALLY PARALLEL AND ADJACENT CYLINDRICAL RECESSES EXTENDING AXIALLY THROUGH SAID CASE FROM END TO END AND HAVING THEIR END DIAMETERS AT LEAST AS LARGE AS THEIR INTERNAL DIAMETERS FOR EASIER AND MORE ECONOMICAL INTERNAL MACHINING AND FINISHING THEREOF BY THE GUIDING AND FINISHING TOOLS AT BOTH ENDS THROUGH SAID OPEN AND FULL DIAMETER ENDS, ONE OF SAID SUBSTANTIALLY PARALLEL CYLINDRICAL RECESSES PROVIDING A WORKING CHAMBER AND HAVING A DAMPING PISTON RECIPROCABLY MOUNTED THEREIN WITH A DAMPING ORIFICE CONNECTION THEREACROSS, END CLOSURES REMOVABLY SECURED IN EACH END OF SAID WORKING CHAMBER CYLINDER, PISTON ROD MEANS EXTENDING OUT THROUGH ONE OF SAID WORKING CYLINDER END CLOSURES, ANOTHER OF SAID CYLINDRICAL RECESSES HAVING END CLOSURES REMOVABLY SECURED IN EACH END THEREOF AND PROVIDING A REPLENISHMENT CHAMBER ENCLOSING A REPLENISHMENT PISTON AND A BIASING SPRING THEREFOR, SAID REPLENISHMENT CHAMBER HAVING ONE-WAY ENTRY MEANS FOR ADDITIONAL LIQUID, AND A THIRD AND SMALLER DIAMETER ONE OF SAID CYLINDRICAL RECESSES PROVIDING A PISTON BY-PASSING PASSAGE TO GIVE ONE-WAY DAMPING, SAID BY-PASS PASSAGE HAVING END CLOSURES REMOVABLY SECURED IN EACH END THEREOF AND COMMUNICATING PASSAGE MEANS CONNECTING EACH END OF SAID THIRD CYLINDRICAL RECESS TO THE TWO SIDES OF SAID DAMPING PISTON.