초록 ▼

A reversible lock and seal apparatus for coupling swimming pool piping and fittings, comprising a frusto-conical U-cross section metal ring with longitudinally spaced circular rows of teeth, adapted to be cammed into piping by a follower coupled to the fitting for locking the piping to the fitting w

A reversible lock and seal apparatus for coupling swimming pool piping and fittings, comprising a frusto-conical U-cross section metal ring with longitudinally spaced circular rows of teeth, adapted to be cammed into piping by a follower coupled to the fitting for locking the piping to the fitting without need of piping threads or solvent cements, and squeezing a seal ring therebetween.

대표청구항 ▼

Reversible lock and seal apparatus for coupling of intercommunicating coaxially disposed first and second liquid-carrying tubular elements such as swimming pool piping, said apparatus comprising a stiff ring adapted to score said first tubular element, said ring being a frusto-conical, split ring, g

Reversible lock and seal apparatus for coupling of intercommunicating coaxially disposed first and second liquid-carrying tubular elements such as swimming pool piping, said apparatus comprising a stiff ring adapted to score said first tubular element, said ring being a frusto-conical, split ring, generally U-shaped in transverse cross-section and sized to be slidably received with the open side of the U-shaped ring facing radially inward adjacent said first tubular element, said ring defining a first generally discontinuous cam surface at its own open side comprising first and second parallel circular series of teeth axially spaced by the width of said ring and of different lengths in respective series as a function of the frusto-conical shape of said split ring to define a common bore, said ring defining a second generally continuous cam surface opposite its open side, and an annular follower defining a congruent frusto-conical section adapted to overlie said ring and by relative axial movement with respect thereto to engage said generally continuous ring cam surface in inwardly camming, ring closing relation, said follower and said second tubular element thereby defining cooperating means adapted to draw said discontinuous cam surface into camming engagement with said said first tubular element, whereby said ring discontinuous surface reversibly locks on said first tubular element to couple said first tubular element to said second tubular element.