Draining device adapted to be disposed within a drain port

Details Draining device adapted to be disposed within a drain port Draining device adapted to be disposed within a drain port

2000-07-20

2001-11-20

Upton, Christopher (Department: 1724)

Liquid purification or separation

Structural installation

Grated inlet surface drain

C210S164000, C210S307000, C210S532100, C004S679000

Reexamination Certificate

active

06319397

ABSTRACT:

BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a draining device, more particularly to a draining device that is adapted to be disposed within a drain port.
2. Description of the Related Art
Referring to
FIGS. 1 and 2
, a conventional draining device
1
is shown to include a tubular base member
11
, a porous top cover
15
, and a bottom lid
14
.
As illustrated, the draining device
1
is adapted to be disposed within a drain port, which is defined by an upper end of a drain pipe
13
that is embedded in the ground at an elevation below the ground surface G. The base member
11
is disposed on the upper end of the drain pipe
13
, and has an open upper end
111
, an open lower end
112
, and a peripheral wall
110
that extends between the upper and lower ends
111
,
112
. The top cover
15
is disposed on the upper end
111
of the base member
11
, and has a plurality of drain holes
151
in fluid communication with the upper end of the drain pipe
13
. The bottom lid
14
is attached to the lower end
112
of the base member
11
by a pivot
16
. A counter weight
17
is connected fixedly to the bottom lid
14
in such a manner that the bottom lid
14
normally closes the lower end
112
of the base member
11
. The bottom lid
14
is opened by virtue of downward flow of water through the draining device
1
.
Some of the disadvantages of the aforesaid conventional draining device
1
are as follows:
(1) The structure of the draining device
1
is somewhat complicated, because it comprises a relatively large number of components, such as the base member
11
, the counter weight
17
, the bottom lid
14
and the pivot
16
.
(2) In case foul odor is present in the drain pipe
13
and because the bottom lid
14
is unable to hermetically cover the lower end of the peripheral wall
110
, the foul odor may permeate through the drain port. In addition, the bottom lid
14
may fall into the drain pipe
13
due to long term exposure of the pivot
16
to water, thereby rendering the upper and lower ends
111
,
112
of the base member
11
in a constantly open state. Under this condition, insects in the drain pipe
13
may move from below the ground surface (G) via the draining device.
(3) The aforesaid draining device is only suitable for use in a drain port that is formed in the ground surface (G), thereby limiting the utility thereof.
SUMMARY OF THE INVENTION
Therefore, the object of this invention is to provide a draining device adapted to be disposed within a drain port which is defined by a drain pipe embedded in the ground. The draining device is clear of the disadvantages mentioned beforehand.
Accordingly, the draining device of the present invention is adapted to be disposed within a drain port, which is defined by an upper end of a drain pipe embedded in the ground at an elevation below the ground surface. The draining device includes a tubular base member adapted to be disposed on the upper end of the drain pipe, and having an open upper end, a closed lower end, a bottom wall, and a peripheral wall that extends between the upper and lower ends and that is formed with a plurality of drain openings. A water guiding tube is attached within the base member, and extends into the peripheral wall of the base member. The drain openings of the base member are located around the water guiding tube at an elevation above a lower end of the water guiding tube. The water guiding tube has open upper and lower ends, and is adapted to guide water from the upper end of the base member to the bottom wall of the base member. Under such a condition, water that accumulates in the closed lower end of the base member has a water surface level above the lower end of the water guiding tube so as to isolate air in the water guiding tube from air in the drain pipe, thereby preventing odor and insects in the drain pipe from accessing the water guiding tube.


REFERENCES:
patent: 270111 (1883-01-01), Pike
patent: 417441 (1889-12-01), Reader
patent: 1033448 (1912-07-01), Mueller
patent: 1507531 (1924-09-01), Vavdell
patent: 2432203 (1947-12-01), Miller
patent: 2472322 (1949-06-01), Weissman
patent: 3042210 (1962-07-01), Hattori
patent: 3516541 (1970-06-01), Hardingham
patent: 3751734 (1973-08-01), Lumadue
patent: 4045346 (1977-08-01), Swashey
patent: 5916436 (1999-06-01), Devure et al.

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