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.
Type:
Grant
Filed:
December 23, 2003
Date of Patent:
April 25, 2006
Assignee:
Saint-Gobain Pipelines plc
Inventors:
Keith Thompson, John Neil Pickavance, Alan Jack Pendleton
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).
Type:
Application
Filed:
December 23, 2003
Publication date:
December 2, 2004
Applicant:
Saint-Gobain Pipelines plc
Inventors:
Keith Thompson, John Neil Pickavance, Alan Jack Pendleton