IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0711829
(2000-11-13)
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발명자
/ 주소 |
- Morris, James F.
- Stelpstra, Stephen C.
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출원인 / 주소 |
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대리인 / 주소 |
Hoffman, Louis J.Suominen, Edwin A.
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인용정보 |
피인용 횟수 :
59 인용 특허 :
125 |
초록
▼
One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the filter system to be attached to the g
One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the filter system to be attached to the grate. The grate can be lifted out of the storm drain separately from the filter unit, which allows the filter system to be lifted without the added weight of the grate. When the grate has been lifted out of the way, a suitable fastener structure can be attached to the bracket of the filter system to make the use of mechanical lifting devices more convenient. The bracket can be manufactured to known dimensions, or it can be offered from among a set of brackets that are pre-configured for known storm drain dimensions or as a standard bracket that can be modified to fit the dimensions of a particular storm drain.
대표청구항
▼
One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the filter system to be attached to the g
One of the exemplary filter systems described includes a bracket and a filter module that can be suspended from the bracket by a plurality of flexible supports. The bracket can support the filter system beneath the grate of a storm drain without the need for the filter system to be attached to the grate. The grate can be lifted out of the storm drain separately from the filter unit, which allows the filter system to be lifted without the added weight of the grate. When the grate has been lifted out of the way, a suitable fastener structure can be attached to the bracket of the filter system to make the use of mechanical lifting devices more convenient. The bracket can be manufactured to known dimensions, or it can be offered from among a set of brackets that are pre-configured for known storm drain dimensions or as a standard bracket that can be modified to fit the dimensions of a particular storm drain. ng tablets of solid dissolvable chemical material which is soluble in liquid, said grid (28) dividing said container (20) into an upper chamber (30) and a lower chamber (32), the side walls (22) of said container (20) between said lid (24) and said grid (28) having a plurality of radially arrayed openings (34) that permit liquid communication between said upper chamber (30) and said collection reservoir (26), characterized in that, a collection chamber inlet (36) from a source of untreated liquid extends into said collection reservoir (26), and an outlet (38) to a line for treated liquid extends into said collection reservoir (26), said container (20) having a bottom (40) spaced from said base (14) of said housing (12) and having a hole (42) in said base (14) to allow liquid communication between said collection reservoir (26) and said lower chamber (32), and means, for creating a liquid vortex in said lower chamber (32) whereby liquid rises radially outwardly in said lower chamber (32) through radially outward perforations of said grid (28), and impinges on said treating tablets in said upper chamber (30) for dissolving said chemical in said liquid and forming a liquid dissolving zone (44) above said grid (28), with a portion of said liquid in said liquid dissolving zone (44) communicating with said collection reservoir (26) via said radially arranged openings (34) and with another portion of said dissolved liquid returning to said lower chamber (32) via radially inward perforations of said grid (28), said driving bar (48) is arranged and designed for variable speed rotation for controlling rotation speed of said stir bar and the energy of said liquid vortex, whereby a rate of dissolution of said treating tablets (5) in said upper chamber (30) and the amount of dissolved chemical in said collection reservoir (26) is variable as a function of said driving bar rotation speed, and said driving bar (48) is coupled to an electric motor (50) the speed of which is controlled by said variable control signal. 3. The system of claim 1, wherein said treating means (201) includes, apparatus for delivering a solution of a solid chemical material which includes a housing (12) having a base (14) and upwardly extending side walls (16), said base (14) and side walls (16) defining a cavity (18), an elongated substantially vertical hollow container (20) positioned within said cavity (18), said container having side walls (22) which are spaced from said side walls (16) of said housing, a lid (24) connecting an upper terminus of the side walls (16) of the housing to the container (20), thereby defining a collection reservoir (26) between said container (20) and said housing (12), a grid (28) having a plurality of perforations (30) mounted within said container (20) below said lid (24) but spaced from and substantially parallel to said base (14), said grid (28) arranged and designed for supporting treating tablets of solid dissolvable chemical material which is soluble in liquid, said grid (28) dividing said container (20) into an upper chamber (30) and a lower chamber (32), the side walls (22) of said container (20) between said lid (24) and said grid (28) having a plurality of radially arrayed openings (34) that permit liquid communication between said upper chamber (30) and said collection reservoir (26), a collection chamber inlet (36) characterized in that from a source of untreated liquid extends into said collection reservoir (26), and an outlet (38) to a line for treated liquid extends into said collection reservoir (26), said container (20) having a bottom (40) spaced from said base (14) of said housing (12) and having a hole (42) in said base (14) to allow liquid communication between said collection reservoir (26) and said lower chamber (32), and means for creating a liquid vortex in said lower chamber (32) whereby liquid swirls in said lower chamber (32) and rises vertically through radially outwardly perforations of said grid (28), and impinges on said treating tablets in said upper chamber (30) for dissolving said chemical in said liquid and forming a liquid dissolving zone (44) above said grid (28), with a portion of said liquid in said liquid dissolving zone (44) communicating with said collection reservoir (26) via said radially arranged openings (34) and with another portion of said dissolved liquid returning to said lower chamber (32) via radially inward perforations of said grid (28), said means for creating a liquid vortex in said lower chamber (32) includes a pipe (68) disposed in said collection reservoir (26), said pipe having an outlet (70) directed tangentially toward the inner wall (31) of said lower chamber (32), said pipe having an inlet in liquid communication with liquid in said collection reservoir (26), a propeller (74) disposed in said inlet (72) of said pipe (68), and a variable speed motor (76) having an output shaft (78) coupled to said propeller (74), thereby creating said liquid vortex, and the speed of said variable speed motor is controlled by said variable control signal. 4. The apparatus of claim 1, wherein said treating means (201) includes, apparatus for delivering a solution of a solid chemical material which includes a housing (12) having a base (14) and upwardly extending side walls (16), said base (14) and side walls (16) defining a cavity (18), an elongated substantially vertical hollow container (20) positioned within said cavity (18), said container having side walls (22) which are spaced from said side walls (16) of said housing, a lid (24) connecting an upper terminus of the side walls (16) of the housing to the container (20), thereby defining a collection reservoir (26) between said container (20) and said housing (12), a grid (28) having a plurality of perforations (30) mounted within said container (20) below said lid (24) but spaced from and substantially parallel to said base (14), said grid (28) arranged and designed for supporting treating tablets of solid dissolvable chemical material which is soluble in liquid, said grid (28) dividing said container (20) into an upper chamber (30) and a lower chamber (32), the side walls (22) of said container (20) between said lid (24) and said grid (28) having a plurality of radially arrayed openings (34) that permit liquid communication between said upper chamber (30) and said collection reservoir (26), characterized in that, a collection chamber inlet (36) from a source of untreated liquid extends into said collection reservoir (26), and an outlet (38) to a line for treated liquid extends into said collection reservoir (26), said container (20) having a bottom (40) spaced from said base (14) of said housing (12) and having a hole (42) in said base (14) to allow liquid communication between said collection reservoir (26) and said lower chamber (32), and means for creating a liquid vortex in said lower chamber (32) whereby liquid rises radially outwardly in said lower chamber (32) through radially outward perforations of said grid (28), and impinges on said treating tablets in said upper chamber (30) for dissolving said chemical in said liquid and forming a liquid dissolving zone (44) above said grid (28), with a portion of said liquid in said liquid dissolving zone (44) communicating with said collection reservoir (26) via said radially arranged openings (34) and with another portion of said dissolved liquid returning to said lower chamber (32) via radially inward perforations of said grid (28), said means for creating a liquid vortex in said lower chamber (32) includes a pipe (68A) at least partially disposed in said collection chamber (26), said pipe (68A) having an outlet (70A) directed tangentially toward the inner wall (31) of said lower chamber 32, said pipe (68A) having an inlet (80), an output pipe (82) in fluid communication with liquid in said collection chamber (26), a pump (84) having an input in fluid communication with said outle
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