US20050155304A1 - Floor drain with membrane strainer - Google Patents

Floor drain with membrane strainer Download PDF

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Publication number
US20050155304A1
US20050155304A1 US11/036,053 US3605305A US2005155304A1 US 20050155304 A1 US20050155304 A1 US 20050155304A1 US 3605305 A US3605305 A US 3605305A US 2005155304 A1 US2005155304 A1 US 2005155304A1
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US
United States
Prior art keywords
strainer
base
floor drain
membrane strainer
membrane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/036,053
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English (en)
Inventor
Den-Lu Hung
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Individual
Original Assignee
Individual
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Publication date
Application filed by Individual filed Critical Individual
Publication of US20050155304A1 publication Critical patent/US20050155304A1/en
Abandoned legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F5/0407—Floor drains for indoor use
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
    • E03F2005/0416—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal

Definitions

  • the present invention relates to a floor drain with membrane strainer, and more particularly to a floor drain having a membrane-type strainer assembly mounted in a main body thereof to effectively prevent stink and insects in a drainpipe from entering into a room via the floor drain.
  • Taiwanese Patent Publication No. 210687 discloses a stink-isolating floor drain.
  • the floor drain has a seat with drain water holes, a dome-shaped hollow cap upward projected from a perimeter of the seat, and an inverted bowl portion downward extended from a bottom of the seat.
  • stink in a drainpipe below the floor drain is prevented from moving upward into a room via the floor drain.
  • the floor drain disclosed in the above Taiwanese patent fails to drain water smoothly because water could not be drained via a central hole of the dome-shaped cap before it submerges the cap. Dust and debris tends to cumulate between the outer side and the inner conic draining face of the dome-shaped cap to produce stink or even clog the floor drain.
  • Taiwanese Patent Publication No. 287567 discloses a valve-type bathroom floor drain having a strainer top and a base to define a funnel-shaped pit between them, and an elastic plastic valve fitted in the funnel-shaped pit.
  • the elastic plastic valve is provided with a plurality of widely spaced valve members corresponding to drain holes on the strainer top and a considerably large central hole, and is not tightly attached to an underside of the drain holes. That is, the floor drain having been fully installed for use is in a completely open state without any shielding means, and therefore completely fails to stop stink in a drainpipe from moving upward into the bathroom via the floor drain, not to mention mosquitoes and insects in the drainpipe.
  • a primary object of the present invention is to provide a floor drain with membrane strainer that effectively prevents stink and insects in a drainpipe from entering into a room via the floor drain.
  • the floor drain with membrane strainer mainly includes a main body having a funnel-shaped pit, a flat grate mounted on a top of the main body using a fastening element, and a strainer assembly mounted in the main body below the flat grate.
  • the strainer assembly includes a disc-shaped base that has an annular plate portion with a downward flange provided along a lower inner edge thereof, and a U-sectioned cup portion having a bottom central hole and being integrally supported at a center of the annular plate portion by ribs, such that an open area is formed between the annular plate portion and the cup portion for drain water to flow therethrough; a membrane strainer that is made of an elastic and flexible material and includes a thin annular portion, on which locating rods are provided for engaging with locating holes on the base to thereby fix the membrane strainer below the base to normally seal the open area; and a gasket ring fitted around the base for the whole strainer assembly to stably seat in the funnel-shaped pit of the main body.
  • a seal ring and an elastic element are sequentially positioned in the cup portion around the fastening element, and thereby seal a joint of the bottom central hole of the cup portion and the fastening element in an airtight manner.
  • the membrane strainer made of elastic and flexible material provides excellent elastic stress to normally elastically seal the open area between the annular plate portion and the cup portion of the base and thereby effectively prevents stink and insects in a drainpipe from entering into a room via the floor drain. And, when the membrane strainer is subjected to a weight of drain water, its outer peripheral area is elastically bent downward to open the open area for drain water to flow therethrough.
  • FIG. 1 is an assembled perspective view of a floor drain with membrane strainer according to a first embodiment of the present invention
  • FIG. 2 is an exploded perspective view of the floor drain with membrane strainer of FIG. 1 ;
  • FIG. 3A is an assembled sectional view showing the floor drain with membrane strainer of FIG. 1 without drain water flowing therethrough;
  • FIG. 3B is an assembled sectional view showing the floor drain with membrane strainer of FIG. 1 with drain water flowing therethrough;
  • FIG. 4 is an exploded perspective view of a variant strainer assembly for the floor drain of the present invention.
  • FIG. 5 is an exploded perspective view of a floor drain with membrane strainer according to another embodiment of the present invention.
  • FIGS. 1 and 2 are assembled and exploded perspective views, respectively, of a floor drain with membrane strainer according to a first embodiment of the present invention.
  • the present invention is also briefly referred to as “the floor drain” throughout the specification.
  • the floor drain in the first embodiment mainly includes a main body 1 having a funnel-shaped pit 11 formed therein, a flat grate 2 closed to an open top of the main body 1 , and a strainer assembly 3 mounted in the pit 11 between the main body 1 and the flat grate 2 using a fastening element 4 .
  • the strainer assembly 3 includes a base 31 , a membrane strainer 32 , an elastic element 33 , and a gasket ring 34 .
  • the base 31 is a molded disc-shaped member 310 made of a plastic material.
  • the base 31 includes an annular plate portion 311 located at a radially outer part thereof, and a U-sectioned cup portion 312 having a bottom central hole 314 and being supported at a center of the annular plate portion 311 by at least one rib 313 , such that an open area 316 is formed between an inner edge of the annular plate portion 311 and an outer edge of the cup portion 312 .
  • the annular plate portion 311 is provided along a lower inner edge with a downward flange 317
  • the rib 313 is provided at predetermined positions with at least two locating holes 315 .
  • the membrane strainer 32 is integrally molded with a highly flexible, elastic, and weatherproof rubber material or a semi-flexible plastic material, and includes a thin annular portion 320 defining a central hole 321 , and at least two locating rods 322 upward projected from a top of the annular portion 320 corresponding to the locating holes 315 on the rib 313 of the base 31 .
  • the membrane strainer 32 is fitted in the open area 316 to locate below the base 31 by upward inserting the locating rods 322 into the locating holes 315 .
  • Each of the locating rods 322 is formed near an upper end with a retaining ring 323 , which is adapted to hold the locating rod 322 in the locating hole 315 after the locating rod 322 is fully inserted into the locating hole 315 .
  • the annular portion 320 has an inner edge fitly located around the lower edge of the cup portion 312 and an outer edge fitly abutted on a radially lower inner edge of the flange 317 , and thereby elastically seals the open area 316 .
  • the gasket ring 34 is integrally molded with an elastic and weatherproof rubber material or a semi-flexible plastic material and includes an annular body 340 .
  • the annular body 340 is provided at an inner edge with an annular groove 341 for fitly engaging with an outer edge of the annular plate portion 311 of the base 31 , so that the gasket ring 34 is mounted around the base 31 .
  • the elastic element 33 is in the form of a spring, and positioned between the flat grate 2 and the base 31 .
  • a seal ring 35 functioning as a washer may be mounted in the cup portion 312 of the base 31 to support a lower end of the elastic element 33 and tightly attach to the fastening element 4 .
  • the cup portion 312 is provided with a stepped lower edge 319 for engaging with the central hole 321 of the membrane strainer 32
  • the flange 317 is provided with a stepped lower inner edge 318 for engaging with the outer edge of the annular portion 320 of the membrane strainer 32 .
  • the annular portion 320 of the membrane strainer 32 is provided at inner and outer edges with annular ribs 324 and 325 , respectively.
  • the outer edge of the annular plate portion 311 of the base 31 is formed into a bevel surface
  • the groove 341 on the gasket ring 34 has a lying V-shaped cross section
  • the annular body 340 of the gasket ring 34 has a lower outer edge formed into a bevel surface corresponding to a slant inner surface of the funnel-shaped pit 11 of the main body 1 .
  • FIG. 3A is a sectional view showing a fully installed floor drain of the present invention shown in FIGS. 1 and 2 without drain water flowing therethrough.
  • the membrane strainer 32 of the strainer assembly 3 is fitted below the cup portion 312 and the flange 317 of the base 31 to seal the open area 316 , and the seal ring 35 is tightly attached to the fastening element 4 to seal a joint of the fastening element 4 and the bottom central hole 314 of the cup portion 312 in a completely airtight manner. Therefore, the strainer assembly 3 effectively stops not only stink but also mosquitoes and insects in a drainpipe from entering into a room via the floor drain.
  • a radially outer peripheral area of the annular portion 320 of the membrane strainer 32 of the strainer assembly 3 is smoothly downward bent by the weight of the drain water to provide a water passage T between the membrane strainer 32 and the flange 317 of the base 31 , allowing the drain water to fall into the drainpipe (not shown) via the water passage T without any impediment.
  • the radially outer peripheral area of the membrane strainer 32 automatically springs upward into an original horizontal position to locate below the flange 317 due to an inherent elastic stress of the material thereof and a cohesion force of residual water between the outer edge of the membrane strainer 32 and an outer edge of the open area 316 , so that the open area 316 is sealed by the membrane strainer 32 again.
  • FIG. 4 is an exploded perspective view of a variant strainer assembly for the floor drain of the present invention.
  • This variant is generally structurally similar to the strainer assembly 3 , except that it has differently designed ribs 313 on the base 31 .
  • FIG. 5 is an exploded perspective view of a floor drain with membrane strainer according to another embodiment of the present invention.
  • the floor drain in this embodiment is generally similar to the first one, except that it includes a main body 1 A having a relatively deep funnel-shaped pit 11 A, and is further provided with a supporting element 5 , which is positioned in the deep pit 1 A to stably support the strainer assembly 3 seated in the main body 1 A.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Public Health (AREA)
  • Water Supply & Treatment (AREA)
  • Sink And Installation For Waste Water (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
US11/036,053 2004-01-20 2005-01-18 Floor drain with membrane strainer Abandoned US20050155304A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
TW93201153 2004-01-20
TW093201153U TWM249978U (en) 2004-01-20 2004-01-20 Diaphragm type drain head

Publications (1)

Publication Number Publication Date
US20050155304A1 true US20050155304A1 (en) 2005-07-21

Family

ID=34571071

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/036,053 Abandoned US20050155304A1 (en) 2004-01-20 2005-01-18 Floor drain with membrane strainer

Country Status (3)

Country Link
US (1) US20050155304A1 (ja)
JP (1) JP3109892U (ja)
TW (1) TWM249978U (ja)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070050901A1 (en) * 2005-05-17 2007-03-08 Den-Lu Hung Sealing ring structure of a sinkhole
US7980035B1 (en) * 2008-11-19 2011-07-19 D Apolito Anthony D Foundation wall moisture abating vent and system
CN104196110A (zh) * 2014-09-01 2014-12-10 刘宇洪 一种地漏
CN108797763A (zh) * 2017-05-03 2018-11-13 施顺钟 泛用型的排水装置
US10415227B2 (en) 2017-05-26 2019-09-17 Ips Corporation Drain valve assembly
CN111549871A (zh) * 2019-02-12 2020-08-18 秦皇岛市戏水鱼洁具有限公司 杠杆式t型单向阀
JP2020530889A (ja) * 2017-08-16 2020-10-29 グアンジョウ エックスエアークラフト テクノロジー カンパニー リミテッド ポンプボディアセンブリ、ポンプ、散布システム及びドローン

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TWI407001B (zh) * 2010-11-04 2013-09-01 Wang Jun Yan 用於排水管路的隔臭裝置

Citations (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1137516A (en) * 1914-10-19 1915-04-27 George W Moon Sewer-trap.
US1771770A (en) * 1929-09-20 1930-07-29 Cosimo D Bruno Backwater trap and floor drain
US1784076A (en) * 1928-08-23 1930-12-09 Rocas Orlando Apparatus for automatic opening and closing of sewer inlets
US2003770A (en) * 1934-03-24 1935-06-04 Goodhart Louis Floor drain
US2211212A (en) * 1939-09-14 1940-08-13 Jesse D Langdon Siphon breaker and valve
US2298551A (en) * 1941-10-29 1942-10-13 Russell F Davisson Back water valve
US3228418A (en) * 1962-09-12 1966-01-11 Bendix Corp Check valve
US3268018A (en) * 1963-10-14 1966-08-23 Smith Tool Co Air or gas circulation rock bit anticontamination valve
US3335741A (en) * 1963-11-19 1967-08-15 Liljendahl Sven Algot Joel Floor drain traps
US3463189A (en) * 1966-03-07 1969-08-26 Wheatley Co Charles Blow-down vent and check valve
US3605132A (en) * 1969-07-22 1971-09-20 John F Lineback Automatic plumbing vent valve
US3707986A (en) * 1971-02-19 1973-01-02 W Breen One-way diaphragm seal for drains
US3714733A (en) * 1970-11-02 1973-02-06 M Madonna Insect guard for sewer and drain openings
US3973407A (en) * 1975-05-02 1976-08-10 Vecchio Fiore M Drainage system
US4098287A (en) * 1976-04-02 1978-07-04 Baumbach William J Drain control device
US4594739A (en) * 1984-05-21 1986-06-17 Watts Brian R Protective drain
US4712574A (en) * 1987-04-23 1987-12-15 C. H. Perrott, Inc. Vacuum-breaking valve for pressurized fluid lines
US4870992A (en) * 1986-12-05 1989-10-03 Augerscope, Inc. Backflow prevention device
US5005603A (en) * 1989-06-22 1991-04-09 Amundson Eric K Retrofittable sewer trap
US5014739A (en) * 1989-10-10 1991-05-14 Ced's, Inc. Check valve assembly
US6202749B1 (en) * 1999-02-04 2001-03-20 David L. Adams Well screen system
US6273124B1 (en) * 1999-05-26 2001-08-14 Donald G. Huber Check valve floor drain
US6319397B1 (en) * 2000-07-20 2001-11-20 Shu-Yin Sun Draining device adapted to be disposed within a drain port
US20020189675A1 (en) * 2001-06-19 2002-12-19 Huber Donald G. Check valve floor drain
US20040128903A1 (en) * 2003-01-08 2004-07-08 Kenneth Wexler Mosquito barrier for drainage structure
US20040256298A1 (en) * 2003-06-18 2004-12-23 Royal Group Technologies Limited Sewer grate with insect block
US6848465B1 (en) * 2002-04-17 2005-02-01 Robert H. Wager Co., Inc. Dual-action vent check valve
US6848468B1 (en) * 2003-11-10 2005-02-01 Saint Island International Drain cover assembly
US20050051467A1 (en) * 2003-09-04 2005-03-10 Yehuda Leon H. Pivotal gate for a catch basin of a storm drain system
US20050092667A1 (en) * 2003-11-03 2005-05-05 Wade Rodney G. Filter
US20050257315A1 (en) * 2004-05-24 2005-11-24 Den-Lu Hung Bugproof and odorproof sealing ring structure of a sinkhole screen

Patent Citations (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1137516A (en) * 1914-10-19 1915-04-27 George W Moon Sewer-trap.
US1784076A (en) * 1928-08-23 1930-12-09 Rocas Orlando Apparatus for automatic opening and closing of sewer inlets
US1771770A (en) * 1929-09-20 1930-07-29 Cosimo D Bruno Backwater trap and floor drain
US2003770A (en) * 1934-03-24 1935-06-04 Goodhart Louis Floor drain
US2211212A (en) * 1939-09-14 1940-08-13 Jesse D Langdon Siphon breaker and valve
US2298551A (en) * 1941-10-29 1942-10-13 Russell F Davisson Back water valve
US3228418A (en) * 1962-09-12 1966-01-11 Bendix Corp Check valve
US3268018A (en) * 1963-10-14 1966-08-23 Smith Tool Co Air or gas circulation rock bit anticontamination valve
US3335741A (en) * 1963-11-19 1967-08-15 Liljendahl Sven Algot Joel Floor drain traps
US3463189A (en) * 1966-03-07 1969-08-26 Wheatley Co Charles Blow-down vent and check valve
US3605132A (en) * 1969-07-22 1971-09-20 John F Lineback Automatic plumbing vent valve
US3714733A (en) * 1970-11-02 1973-02-06 M Madonna Insect guard for sewer and drain openings
US3707986A (en) * 1971-02-19 1973-01-02 W Breen One-way diaphragm seal for drains
US3973407A (en) * 1975-05-02 1976-08-10 Vecchio Fiore M Drainage system
US4098287A (en) * 1976-04-02 1978-07-04 Baumbach William J Drain control device
US4594739A (en) * 1984-05-21 1986-06-17 Watts Brian R Protective drain
US4870992A (en) * 1986-12-05 1989-10-03 Augerscope, Inc. Backflow prevention device
US4712574A (en) * 1987-04-23 1987-12-15 C. H. Perrott, Inc. Vacuum-breaking valve for pressurized fluid lines
US5005603A (en) * 1989-06-22 1991-04-09 Amundson Eric K Retrofittable sewer trap
US5014739A (en) * 1989-10-10 1991-05-14 Ced's, Inc. Check valve assembly
US6202749B1 (en) * 1999-02-04 2001-03-20 David L. Adams Well screen system
US6273124B1 (en) * 1999-05-26 2001-08-14 Donald G. Huber Check valve floor drain
US6319397B1 (en) * 2000-07-20 2001-11-20 Shu-Yin Sun Draining device adapted to be disposed within a drain port
US6719004B2 (en) * 2001-06-19 2004-04-13 Donald G. Huber Check valve floor drain
US20020189675A1 (en) * 2001-06-19 2002-12-19 Huber Donald G. Check valve floor drain
US6848465B1 (en) * 2002-04-17 2005-02-01 Robert H. Wager Co., Inc. Dual-action vent check valve
US20040128903A1 (en) * 2003-01-08 2004-07-08 Kenneth Wexler Mosquito barrier for drainage structure
US20040256298A1 (en) * 2003-06-18 2004-12-23 Royal Group Technologies Limited Sewer grate with insect block
US20050051467A1 (en) * 2003-09-04 2005-03-10 Yehuda Leon H. Pivotal gate for a catch basin of a storm drain system
US20050092667A1 (en) * 2003-11-03 2005-05-05 Wade Rodney G. Filter
US6848468B1 (en) * 2003-11-10 2005-02-01 Saint Island International Drain cover assembly
US20050257315A1 (en) * 2004-05-24 2005-11-24 Den-Lu Hung Bugproof and odorproof sealing ring structure of a sinkhole screen

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070050901A1 (en) * 2005-05-17 2007-03-08 Den-Lu Hung Sealing ring structure of a sinkhole
US7980035B1 (en) * 2008-11-19 2011-07-19 D Apolito Anthony D Foundation wall moisture abating vent and system
CN104196110A (zh) * 2014-09-01 2014-12-10 刘宇洪 一种地漏
CN108797763A (zh) * 2017-05-03 2018-11-13 施顺钟 泛用型的排水装置
US10415227B2 (en) 2017-05-26 2019-09-17 Ips Corporation Drain valve assembly
US11149428B2 (en) 2017-05-26 2021-10-19 Ips Corporation Drain valve assembly
JP2020530889A (ja) * 2017-08-16 2020-10-29 グアンジョウ エックスエアークラフト テクノロジー カンパニー リミテッド ポンプボディアセンブリ、ポンプ、散布システム及びドローン
US20200362847A1 (en) * 2017-08-16 2020-11-19 Guangzhou Xaircraft Technology Co., Ltd Pump Body Assembly, Pump, Sprinkler System, and Unmanned Aerial Vehicle
CN111549871A (zh) * 2019-02-12 2020-08-18 秦皇岛市戏水鱼洁具有限公司 杠杆式t型单向阀

Also Published As

Publication number Publication date
TWM249978U (en) 2004-11-11
JP3109892U (ja) 2005-06-02

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Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE