CPC G01F 15/185 (2013.01) [F16K 27/067 (2013.01); G01F 15/005 (2013.01); G01F 15/14 (2013.01)] | 19 Claims |
1. An extendable coupling comprising:
a body;
a telescoping tube that is selectively extendable from and retractable towards the body;
wherein the telescoping tube is movable linearly within a passageway in the body;
a ring located about an inner periphery of the passageway in the body; and
a lip located about an outer periphery of the telescoping tube so the ring is engageable with the lip of the telescoping tube at a predetermined amount of extension from the body to limit an extent to which the telescoping tube extends from the body.
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