Time delay switch

Claim 1

A MECHANICAL TIME DELAY ASSEMBLY COMPRISING: A HOLLOW CASING, AN ACTUATING PLUNGER HAVING AN APERTURE THEREIN MOVABLE WITHIN SAID CASING BETWEEN FIRST AND SECOND DISCRETE POSITIONS, RESILIENT BIASING MEANS URGING SAID PLUNGER TOWARD SAID FIRST POSITION, A CONTROL MECHANISM ACTUATED BY MOVEMENT OF SAID PLUNGER, A STATIONARY MEMBER FIXED WITH RESPECT TO SAID CASING AND EXTENDING INTO SAID APERTURE, A FIRST FLEXIBLE FLUID-FILLED MEMBER MOUNTED ON SAID STATIONARY MEMBER WITHIN SAID APERTURE IN A NORMALLY EXPANDED CONDITION AND BEARING AGAINST SAID PLUNGER, A SECOND FLEXIBLE FLUID-FILLED MEMBER MOUNTED ON SAID STATIONARY MEMBER WITHIN SAID APERTURE IN A NORMALLY COMPRESSED CONDITION AND BEARING AGAINST SAID PLUNGER, PASSAGE-DEFINING MEANS COMMUNICATION WITH THE INTERIOR OF BOTH OF SAID FIRST AND SECOND MEMBERS AND PROVIDING THE SOLE MEANS OF INGRESS AND EGRESS FOR THE FLUID IN SAID FIRST AND SECOND MEMBERS, SAID PASSAGE-DEFINING MEANS INCLUDING A RESTRICTED ORIFICE PROVIDING THE SOLE PATH OF ESCAPE FOR FLUID FLOWING FROM SAID SECOND MEMBER TO SAIDFIRST MEMBER, AND MEANS FOR EFFECTING MOVEMENT OF SAID PLUNGER RELATIVE TO THE CASING AND TO THE STATIONARY MEMBER FROM THE FIRST TO THE SECOND OF SAID POSITIONS AGAINST THE URGING OF SAID BIASING MEANS, THEREBY TO FORCE FLUID FROM SAID FIRST MEMBER INTO SAID SECOND MEMBER,M WHEREBY RETURN ACTUATING MOVEMENT OF SAID PLUNGER TO ITS FIRST POSITION IS DELAYED A PREDETERMINED TIME INTERVAL BY THE ESCAPE OF FLUID THROUGH SAID RESTRICTED ORIFICE.