Covering device for drain

Details Covering device for drain Covering device for drain

2006-12-12

2006-12-12

Chambers, A. Michael (Department: 3753)

Fluid handling

With casing, support, protector or static constructional...

Static constructional installations

C251S208000, C251S210000, C251S212000

Reexamination Certificate

active

07147000

ABSTRACT:
A covering device for a drain includes a first cover and a second cover. The first cover defines a plurality of openings. The second cover defines a plurality of openings corresponding to the openings of the first cover. The second cover is rotationally connected to the first cover. In a position, the openings of the second cover are aligned with the openings of the first cover in order to open the drain. In another position, the first cover blocks the openings of the second cover while the second cover blocks the openings of the first cover in order to close the drain.

REFERENCES:
patent: 1190643 (1916-07-01), Harris
patent: 3334861 (1967-08-01), Westbrook
patent: 4035297 (1977-07-01), Aldridge et al.
patent: 5323804 (1994-06-01), Lin
patent: 5746415 (1998-05-01), Shimizu
patent: 6283442 (2001-09-01), Whiteside
patent: 6314590 (2001-11-01), Lee
Taiwan Patent Publication No. 416451, Dec. 21, 2000, 4 pages.

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