Dashpot assembly

Claim 1

A DASHPOT COMPRISING A HOUSING INCLUDING TWO SEPARATE PARTS ONE OF WHICH HAS AN OPENING THERETHROUGH, AN OUTER ANNULAR DIAPHRAGM THE OUTER CIRCUMFERENTIAL EDGE OF WHICH IS CLAMPED BETWEEN SAID TWO HOUSING PARTS, A PAIR OF WASHER MEMBERS MAINTAINED IN AXIAL SPACED RELATION AND CLAMPING THE INNER PERIPHERY OF SAID OUTER DIAPHRAGM THEREBETWEEN, A ROD SECURED TO THE WASHERS CENTRALLY THEREOF AND EXTENDING BETWEEN SAID WASHERS AND THROUGH SAID OPENING IN SAID ONE HOUSING PART, RESILIENT MEANS ACTING BETWEEN ONE OF SAID WASHERS AND THE OTHER HOUSING PART FOR BIASING THE ROD OUT OF THE HOUSING, AN INNER ANNULAR DIAPHRAGM SLEEVED OVER SAID ROD AND LOCATED BETWEEN SAID WASHERS, SAID INNER ANNULAR DIAPHRAGM HAVING AN OUTER DIAMETER SMALLER THAN THE INNER DIAMETER OF THE OUTER DIAPHRAGM AND AN INNER DIAMETER LARGER THAN THE DIAMETER OF THE PORTION OF THE ROD EXTENDING BETWEEN THE WASHERS, ONE OF SAID WASHERS HAVING OPENINGS THERETHROUGH RADIALLY OUTWARDLY OF THE INNER DIAPHRAGM AND RADIALLY INWARDLY OF THE OUTER DIAPHRAGM, THE OTHER OF SAID WASHERS HAVING AN OPENING THERETHROUGH RADIALLY INWARDLY OF THE OUTER PERIPHERY OF THE INNER DIAPHRAGM AND RADIALLY OUTWARDLY OF THE INNER PERIPHERY OF THE INNER DIAPHRAGM, AND A RADIAL GROOVE IN THE SURFACE OF THE OTHER WASHER ADJACENT SAID INNER DIAPHRAGM EXTENDING BETWEEN THE ROD AND OPENING THROUGH SAID OTHER WASHER FOR PROVIDING A RESTRICTED ORIFICE BETWEEN THE INNER DIAPHRAGM AND OTHER WASHER TO PERMIT RESTRICTED PASSAGE OF A MEDIUM IN THE DASHPOT THROUGH THE DIAPHRAGM ASSEMBLY ON MOVEMENT OF THE ROD INTO THE HOUSING.