| CPC B60C 29/002 (2013.01) [B60C 29/005 (2013.01); F16K 11/07 (2013.01); F16K 15/20 (2013.01); Y10T 137/3646 (2015.04)] | 20 Claims |
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1. A pressure sensitive valve core usable with a valve stem to force air pressure into an inflatable device attached to the valve stem, comprising:
a hollow valve core body including external threads to thread into a valve stem, internal top threads disposed at a top opening thereof and internal bottom threads disposed at a bottom opening thereof;
a valve core top including an air chuck port extending through a center thereof, an air chuck press column having an air chuck press extending from a top side thereof directly above the air chuck port, a valve core top insert extending from a bottom side thereof and including external threads to be threaded to the internal to threads of the valve core body, and an air chuck regulator fixed therein and including at least one air regulator port and a central hole therethrough;
a spring mechanism housing and lock combination including a threaded insert top including external threads to be threaded with the internal bottom threads of the valve core body, a bottom hole and a valve mechanism fixed to internal sidewalls thereof, the valve mechanism including at least one port hole for air to pass through, a central hole including a male c-clip axially fixed at a first side of the central hole and an insert axially aligned with and extending from a second side of the central hole;
a spring valve mechanism including:
a seat disposed along a circumference thereof facing a first direction;
a circular collar extending from the seat; and
a spring valve slide extending outward from a center thereof, the spring valve slide extending through a center thereof and including:
an air pressure check port extending axially therethrough;
a female c-clip locking groove disposed around the outer surface of the spring valve slide at a position to align with and become engaged with the male c-clip when the spring valve slide is inserted through the bottom hole of the spring mechanism housing and lock combination, through the central hole and through the insert of the valve mechanism, and when the seat thereof is in pressing contact with the bottom hole of the spring mechanism housing and lock combination; and
a spring disposed around the spring valve slide and configured to apply a spring tension between the spring valve mechanism and the valve mechanism insert; and
an air pressure check tube having first and second ends thereof and an axial hole extending through the first end and terminating at the second end, the air pressure check tube extending through the air chuck press column, through the central hole of the air chuck regulator and through the air pressure check port of the spring valve slide such that the first end thereof extends out of the air chuck press column and the second end rests within the end of the spring valve slide port, the air pressure check tube including:
a spring disposed adjacent the first end to limit movement of the air pressure check tube within the pressure sensitive valve core; and
an air pressure check valve disposed through a side thereof adjacent the second end thereof and extending to the axial hole such that the air pressure check valve extends out of the air pressure check port of the spring valve slide when pressure is applied to the first end of the air pressure check tube.
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