Liquid purification or separation – Structural installation – Grated inlet surface drain
Reexamination Certificate
2006-04-25
2006-04-25
Upton, Christopher (Department: 1724)
Liquid purification or separation
Structural installation
Grated inlet surface drain
C210S232000, C210S474000, C404S004000, C404S025000
Reexamination Certificate
active
07033489
ABSTRACT:
A drainage assembly (10) comprises a frame (11) for defining at least part of the surface boundary of a surface drainage aperture; and a grating (14) having formed therein a plurality of apertures. The grating (14) is hingedly secured to the frame (11) and is moveable, when so secured, between an operative position in which the grating (14) is contiguous with the frame (11); and an open position in which the grating (14) lies hinged away from the frame (11).The grating (14) includes protruding therefrom a pair of forks (34, 36). The frame (11) includes a pair of journal bearings (37, 38). The forks each have protruding therefrom a respective protuberance (39) that is receivable in a respective journal recess (42) formed in the journal bearings.At least one of the said forks (34, 36) is resiliently deformable and the locations of the respective protuberances (39) and journal recesses (42) are such as to urge the said protuberances (39) into associated said journal recesses when the grating (14) and the frame (11) are secured together.
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Pendleton Alan Jack
Pickavance John Neil
Thompson Keith
Saint-Gobain Pipelines plc
Upton Christopher
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