| CPC A47C 27/083 (2013.01) [A47C 27/10 (2013.01); G05D 16/0404 (2019.01)] | 9 Claims |
|
1. A combination comprising:
a pneumatically inflatable mattress comprising:
a first zone having at least a first pneumatic cell,
at least a first air supply conduit in fluid communication with the first pneumatic cell,
at least a first air supply circuit in fluid communication with the first air supply conduit, the first air supply circuit being in fluid communication with an exterior of the mattress, and
at least a first check valve between the first air supply conduit and the first air supply circuit for interrupting the fluid communication therebetween; and
a pendant controller separable from the mattress, the pendant controller comprising:
at least a first pneumatic fluid circuit in fluid communication with a first variable pressure reducing valve, the first pneumatic fluid circuit being connectable in relation to the first air supply circuit, whereby the first variable pressure reducing valve is controllable to adjust air pressure within the first pneumatic cell, and
wherein the first check valve is closed when the first pneumatic fluid circuit is separated from the first air supply circuit by separating the pendant controller from the mattress and open when first pneumatic fluid circuit is connected in relation to the first air supply circuit by connecting the pendant controller from the mattress.
|