US PATENT SUBCLASS 210 / 163
.~ Grated inlet surface drain
Current as of:
June, 1999
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210 /
HD
LIQUID PURIFICATION OR SEPARATION
153
DF
STRUCTURAL INSTALLATION
{6}
163
.~ Grated inlet surface drain {2}
164
DF
.~.~
> Flat grating at surface level {1}
166
DF
.~.~
> Concentric guard ring or rib
DEFINITION
Classification: 210/163
(under subclass 153) Structures including a strainer in outlet means which provide drain means for a surface, as a floor.
SEE OR SEARCH THIS CLASS, SUBCLASS:
116, for a grated surface inlet drain including means responsive to filtrate accumulation permitting discharge of treated material.
119, for a grated surface drains having back-flow preventing means.
247, for a strainer with a filtrate deflector.
459, for a pipe or plate attached filter.
SEE OR SEARCH CLASS
4, Baths, Closets, Sinks, and Spittoons, appropriate subclasses, particularly
268+, 275+, 286+, 596+, 640+, and 650+ for plumbing apparatus including drains with grated inlets.
52, Static Structures (e.g., Buildings),
12, for cover with an eave or valley gutter with a separator.
285, Pipe Joints or Couplings,
42, for flashed pipe-to-plate joint.
404, Road Structure, Process, or Apparatus,
2+, for roadway drain or gutter structure.
