US PATENT SUBCLASS 52 / 220.1
WALL, CEILING, OR FLOOR DESIGNED FOR UTILITIES

Current as of: June, 1999
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52 /   HD   STATIC STRUCTURES (E.G., BUILDINGS)

220.1WALL, CEILING, OR FLOOR DESIGNED FOR UTILITIES {6}
220.2  DF  .~> Load-bearing, prefabricated, abutting units with aligned utility passages
220.3  DF  .~> Multiple passageway or multicellular load-bearing units (e.g., grid or two parallel pipes in a slab) {1}
220.5  DF  .~> Completed accessible continous trench duct type
220.6  DF  .~> Suspended ceiling
220.7  DF  .~> Partition type (e.g., raceway arrangement)
220.8  DF  .~> Having a passageway through the entire wall, ceiling, or floor thickness (e.g., poke-through)

DEFINITION

Classification: 52/220.1

WALL, CEILING, OR FLOOR DESIGNED FOR UTILITIES:

(under the class definition) Structure in which a distinct duct-type path for water, fuel, heating fluid, cooling fluid, or electrical systems is an integral part of the barrier.

SEE OR SEARCH THIS CLASS, SUBCLASS:

34+, for an installed lavatory fixture.

95, for a roof end structure with conduit or passage means.

192+, for liquid or fluent material container with material port.

209, for window with drain or vent.

219, for a flue connection to a specific building structure.

302.1+, for a barrier construction within exteriorly opening fluid handling feature.

503+, for a barrier with a through fluid passage formed by the component modules of the barrier.

533+, for a lapped surfacing with fluid handling feature in the joint.

553, for a lapped multiplanar surfacing with an interior space.

SEE OR SEARCH CLASS

62, Refrigeration,

440+, for a cooled enclosure having means or a relationship of components specialized to refrigeration, particularly subclass 451 for a duct confining a flowing coolant and covered by insulation means.

126, Stoves and Furnaces,

633, for a wall or floor constructed with a passage for solar heated fluid to warm a building.

137, Fluid Handling,

234.6, for a fluid handling system related to a vehicle guide or support, subclass 236.1 for such a system related to a geos:graphical feature and subclass 343 for such a system in a static structural installation.

138, Pipes and Tubular Conduits, 156+, for ducts.

165, Heat Exchange,

53+, for a specific heat exchanger structurally installed in a wall, ceiling, or floor.

174, Electricity: Conductors and Insulators,

48+, 50+, and 68.1+ for a passageway specifying electrical features; e.g., a wire.

220, Receptacles,

3.2, for an outlet or junction box even though a mere connection to a buried conduit may be defined.

237, Heating Systems,

69, for a heating system including a duct in a floor.

285, Pipe Joints or Couplings,

64, for a pipe joint supported by an element of a building

construction. 454, Ventilation,

270+, for a hollow wall structure with air distributors; e.g., inlet to space.