Coupling device for securing a gas discharge apparatus inside a gas delivery conduit of a fluid impermeable liner covering a liquid-receiving basin

A spa chair, comprising:

• a base arranged for resting on a support surface;
• a seat mounted on the base;
• a soaking basin mounted in front of the seat, the basin for containing liquid;
• a gas discharge apparatus configured to discharge a gas into a gas delivery conduit of a liner configured to cover the basin, wherein the liner has an outer face for engaging the basin and an inner face for lining an inside volume of a receptable formed by the liner within the liner-covered basin, the gas discharge apparatus having a discharge end configured to be placed into fluid communication with the gas delivery conduit of the liner;
• a securing device for securing the discharge end into fluid communication with the gas delivery conduit of the liner, the securing device comprising:
• a first portion configured to be mounted onto a mounting surface of the basin and to engage the outer face of the liner, wherein the first portion has an inner face arranged to face away from the mounting surface of the basin and configured to engage the outer face of the liner, wherein the inner face of the first portion has a longitudinally extending first cavity-forming portion and contact surfaces on either side thereof, wherein the first cavity-forming portion is recessed from the contact surfaces relative to a depth direction;
• a second portion configured to be movable relative to the first portion to selectively engage the inner face of the liner in opposite relation to the first portion in a clamping position, wherein the second portion has an inner face arranged to face the inner face of the first portion in the clamping position, wherein the inner face of the second portion has a longitudinally extending second cavity-forming portion and contact surfaces on either side thereof, wherein the second cavity-forming portion is recessed from the contact surfaces of the second portion in the depth direction;
• and
• wherein the first cavity-forming portion of the first portion and the second cavity-forming portion of the second portion are configured to cooperatively form, in the clamping position, a cavity configured to receive the gas delivery conduit and to clamp the gas delivery conduit over the discharge end of the gas discharge apparatus to substantially form a fluidic seal between the gas delivery conduit and the discharge end of the gas discharge apparatus, wherein, in the clamping position, the contact surfaces of the first portion are in opposed relation to the contact surfaces of the second portion for receiving the liner therebetween.