(under subclass 665) Waterbeds or associated devices having means (e.g., valves) to facilitate the insertion or removal of a liquid, into or out of the bladder.
(1) Note. A mere conventional valve on the bladder is not sufficient to classify a patent in this subclass.
(2) Note. This subclass receives patents which claim specialized valves or ports for the filling or emptying of the bladder.
SEE OR SEARCH CLASS
137, Fluid Handling,
223+, for inflatable article and subclass 883 for single inlet and multiple valved outlets.
141, Fluent Material Handling, With Receiver or Receiver Coacting Means,
65+, for evacuation apparatus, subclass 114 for manipulation of flexible or collapsible receiver or supply, subclasses 313+ for filling means with flexible or collapsible receiver or receiver coacting means, and subclass 382 for flexible hose terminal filling means with receiver engaging means. 251, Valves and Valve Actuation,
61.1, for flexible, expansible wall with reciprocating valve actuator and subclasses 129.01+ for electrically actuated valves.
