Single lock and double lock couplings having a locking ring with identifying indicia and methods of use and assembly
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United States of America Patent
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May 10, 2016
Grant Date -
May 14, 2015
app pub date -
Nov 8, 2013
filing date -
Nov 8, 2013
priority date (Note) -
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Abstract
Couplings for use with mating couplings with locking rings. A stem coupling may have a coupling head configured to attach with a head portion of the mating coupling, a stem mated to the coupling head where the stem has a threaded portion on an outer surface, and a retractable locking sleeve positioned on a portion of the coupling head. The retractable locking sleeve may have a locked position and an unlocked position for preventing and permitting the coupling head to attach to or detach from the mating coupling. The stem coupling includes a stem locking ring having a first position preventing axial movement of the locking sleeve and a second position permitting axial movement of the locking sleeve. The stem locking ring may also include at least one of a color and indicia to alert a user to a type of media for which the stem coupling is intended.
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