US3838706A - Conduit closure - Google Patents

Conduit closure Download PDF

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Publication number
US3838706A
US3838706A US35801173A US3838706A US 3838706 A US3838706 A US 3838706A US 35801173 A US35801173 A US 35801173A US 3838706 A US3838706 A US 3838706A
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US
United States
Prior art keywords
cover
liquid
conduit
combination
depression
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.)
Expired - Lifetime
Application number
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English (en)
Inventor
A Klenk
H Klenk
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE19722222406 external-priority patent/DE2222406A1/de
Priority claimed from DE19722227419 external-priority patent/DE2227419C3/de
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of US3838706A publication Critical patent/US3838706A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • 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
    • E03F2005/0417—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps with an odour seal in the form of a valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/4456—With liquid valves or liquid trap seals
    • Y10T137/4463—Liquid seal in liquid flow line; flow liquid forms seal
    • Y10T137/4471—Valves
    • Y10T137/4478—Line condition change responsive
    • Y10T137/4493—Pivoted valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7339—By weight of accumulated fluid
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7287—Liquid level responsive or maintaining systems
    • Y10T137/7358—By float controlled valve
    • Y10T137/7423—Rectilinearly traveling float
    • Y10T137/7426—Float co-axial with valve or port
    • Y10T137/7436—Float rigid with valve
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7898—Pivoted valves
    • Y10T137/7902—Valve mounted on end of pipe
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7837—Direct response valves [i.e., check valve type]
    • Y10T137/7898—Pivoted valves
    • Y10T137/7903—Weight biased

Definitions

  • the present invention relates generally to a conduit closure, and more particularly to a closure which permits entry of liquid into a conduit communicating with a reservoir, channel or the like, but prevents backingup of the liquid out of the conduit.
  • Closures of the type here under discussion are used for various purposes, including for use with drainage conduits. For purposes of explanation the present invention will be discussed hereafter with respect to the use of the novel closure on a drainage conduit, although this should be understood to be exemplary only.
  • the cover is pivotally mounted so that as water accumulates in the upright conduit it will eventually overcome the force of a biasing means holding the cover in closed position, and will force the cover to move to open position so that the accumulated water can now run out of the upright conduit into the drainage conduit or reservoir.
  • a sealing ring is located at the lower edge of the upright conduit, that is the edge face which faces in axial direction, and in which the cover itself is mounted for pivotal movement about a pivot axis which is located beneath the conduit itself, whereas a counterweight acting as a biasing means for the cover is located immediately laterally adjacent the conduit.
  • the invention proposes to provide a conduit closure of the type in question which provides for a reliable trouble-free operation, and in which in wintertime the freezing-shut of the closure, in I a sense preventing its intended operation, is precluded.
  • Another object of the invention is to provide such a closure which permits reliable and ready flushing of all or substantially all accumulated solid contaminants whenever the cover moves to open position.
  • one feature of the invention results in a structure of the character described herein, particularly a conduit closure for permitting the flow of liquid into but preventing the flow of liquid back out of a drainage conduit, comprising a conduit having spaced open ends and a mounting element for mounting the conduit in upright orientationso that the open ends constitute upper and lower ends, respectively.
  • a sealing ring surrounds the conduit exteriorly thereof adjacent the lower open end.
  • a cover is mounted on the conduit so as to be located beneath the lower open end and has a major surface adapted to face the lower open end. The major surface is provided with a depression adapted to accommodate liquid entering through the upper open end until such liquid rises in the depression to a predetermined level below the lower open end.
  • Mounting means mounts the cover for pivoting movement between a position closing the lower open end and in which the rim sealingly engages the sealing ring, in a downwardly displaced position in which the cover opens the lower open end and liquid accumulated in the depression is discharged from the latter.
  • Biasing means is connected with the cover and is operative for biasing the same to the closed position until accumulated liquid in the depression reaches the aforementioned predetermined level.
  • FIG. 1 is asomewhat diagrammatic vertical section illustrating an embodiment of the present invention, in closed condition
  • FIG. 2 is a view similar to FIG. 1 but illustrating the same embodiment in open position
  • FIG. 3 is a section taken on line IIIIlI of FIG. 1.
  • reference numeral 1 identifies the conduit closure per se. It is mounted in a vertical shaft 2 of circular cross section with this shaft 2 constituting the entrance to a reservoir, a drainage conduit or the like.
  • the inner circumference of the shaft 2 is provided with three abutments (there could be fewer or more) which are spaced in circumferential direction and designated with reference numeral 3, and which support a ring 4 which in turn supports the closure 1.
  • the closure 1 comprises a mounting element 5 of circular cross section, whose diameter corresponds to the internal diameter of the shaft 2 and which is provided at its underside with a circumferentially extending sealing ring 6 engaging the ring 4 and providing a seal therewith.
  • An off-center rectangular inlet opening 7 is provided in the plate 5 and communicates with an upright conduit 8 which is fixedly connected with the plate or mounting element 5 and of the same cross section as the opening 7.
  • the conduit 8 extends downwardly from the plate 5 and has, as illustrated in the drawing, an upper open end and a lower open end.
  • the lower open end of the conduit 8 is designated with reference numeral 9 and above it a plate 10 is fixedly connected with the conduit 8 to extend in parallelism with the plate 5.
  • FIG. 3 shows particularly clearly.
  • the underside of the plate 10 is provided with two elements 11 which are spaced from one another and between which a shaft 12 extends in horizontal direction.
  • a sleeve 13 is placed onto the shaft 12, so as to surround the same with play and carries at one side a plate 14 and at the diametrally opposite side a pair of arms 15 which carry between them a solid counterweight 16 of cylindrical cross section.
  • the cross section could be different from what is illustrated.
  • the purpose of the counterweight 16 is to urge the plate 14, which constitutes the cover, into the closed position shown in FIG.
  • sealing ring 16a which surrounds the conduit 8 exteriorly of the same and somewhat upwardly spaced from the lower open end 9.
  • the sealing ring 160 is mounted at the underside of the plate 10, as shown.
  • the cover 14 will be seen to be approximately shovel-shaped in its configuration, having a side which normally faces upwardly and which is provided with a depression 17 in which liquid entering through the upper open end of the conduit 8 can accumulate.
  • the drawing shows that the depression 17 is defined by a wall 18 adjacent the sleeve 13, a surface 19 which extends from the lower edge of the wall 18, and two triangular sidewalls 20, with the upper edges of these sidewalls being located in a common plane and forming an upstanding rim 21 which in the closed position of FIG. 1 engages the underside of the sealing ring 16a in sealing engagement therewith.
  • the underside of the cover 14, that is beneath the surface 19 thereof, is provided with a sealed air chamber 22 which is bounded not only by the underside of the wall having the surface 19, but also by a surface 23 which extends from the lower edge of the wall 18, by a wall 24 and by two sidewall portions which constitute extensions of the sidewalls 20.
  • sealing rings 6 and 160 which may be of a suitable elastomeric sealing material such as natural or synthetic rubber, synthetic resin or the like
  • all other components of the construction may be made of synthetic plastic material, for instance polyethylene, nylon or the like. However, any or all of these components may be made totally or in part of metallic material if desired.
  • the construction according to the present invention requires little or no maintenance even over prolonged periods of time, and will operate reliably and without.
  • this arrangement also insures that even relatively large solid contaminants which have entered, such as relatively large stones or the like, can be discharged when the cover moves to the open position of FIG. 2, and that no solids can be retained which could become clamped between the cover 14 and the sealing ring 16a, or the lower end of the conduit 8, and prevent the cover from operating as desired.
  • the cover according to the present invention will open not gradually but spontaneously once a level of liquid in the depression 17 has been reached at which the weight of the liquid overbalances the weight of the counterweight 16. This results in a sudden discharge of the accumulated liquid, and as a result in a proper clearing of any contaminants such as rocks, twigs, leaves or the like from the depression 17. Moreover. due the fact that the relatively thin-walled upstanding rim of the cover contacts the sealing ring 16a, reliable sealing action is always assured, because the unit area pressure between the sealing ring 16a and the upstanding rim will be high due to the relatively small wall thickness of the same. This assures good sealing even if there is no flow of incoming liquid which could form a gas or odor seal in the depression 17.
  • the sealed air chamber could be omitted, but it is advantageous to provide it because this provides for an additional sealing effect if there is a back-up of liquid downwardly of the cover because such liquid then acts upon the cover, and the air entrapped in the sealed chamber has sufficient buoyancy to help urge the cover into even tighter sealing engagement with the sealing ring 16a.
  • the sealed air chamber when used it may in certain circumstances be possible to even omit the counterweight 16, namely in such circumstances where the construction is intended only to prevent backing-up of theliquid and when there is either no possibility that odors and gases might rise, or when their escape is not objectionable.
  • the cover would normally be in open position and would only be urged to scaling position when the liquid beneath it backs up.
  • the cover 14 is of approximately rectangular or trapezoidal hollow profile, having a diagonal wall which constitutes the upwardly inclined bottom of the depression and which separates the depression from the sealed air chamber.
  • the pivot axis defined by the shaft 12 and the counterweight 16 are located substantially in a common horizontal plane when the cover is in the closed position shown in FIG. 1.
  • the pivot axis is located outside the range of flow of liquid through the conduit 8 with such a construction, and the counterweight will produce its largest biasing force when the cover 14 is in closed position, whereas the biasing force will decrease as the cover begins to move towards open position, due to the decreasing lever arm of the biasing or counterweight, so that a spontaneous and rapid opening of the cover is thereby facilitated.
  • the cover can move through approximately 90 between the closure position of FIG. 1 and the open position of FIG. 2, although a different angle of displacement might be chosen.
  • the 90 opening angle is, however, especially advantageous because a relatively light flow of liquid will maintain the cover in open position under these circumstances.
  • the partic- 6 ular, essentially shovel-shaped construction of the cover 14 which has been illustrated in the drawing has certain advantages.
  • the upwardly inclined surface bounding the depression 17, that is the inclination of the surface from the region of the pivot axis defined by the shaft 12 at one side of the conduit 8 towards the other side of the conduit 8 and the other side of the cover 14, assures that liquid which has accumulated in the deeper part of the depression 17 adjacent the edge where the pivot axis defined by the shaft 17 is located.
  • a one-way closure for discharge conduits comprising, in combination, a mounting element connected to the discharge conduit interiorly thereof and subdividing the same in an upper and a lower compartment; an elongated connecting conduit sealingly connected to said mounting element and having an upper end portion communicating with said upper compartment, a lower end portion communicating with said lower compartment, and an internal surface partially bounding a liquid-flow path between said upper and lower compartments; a cover mounted in said lower compartment for pivoting movement with respect to said connecting conduit between a closed position and a fully open position; biasing means connected with said cover and operative for biasing the same to said closedposition with a force gradually diminishing from a maximum force in said closed position to a minimum force in said open position; a depression provided in said cover and adapted to accommodate a predetermined quantity of liquid therein when said cover is in said closed position thereof so as to establish a maximum liquid level in said depression at which the weight of said predetermined quantity of liquid outbalances said maximum force with attendant rapid movement of said cover into said open position thereof and discharge of said quantity of liquid;
  • biasing means comprises a counterweight
  • a combination as defined in claim 2 comprising mounting means including a pivot member connected with said cover at one side of said connecting conduit, exteriorly of the latter.
  • said mounting means defines a pivot axis; and wherein the configuration of saidcover in a vertical cross-section extending substantially normal through said pivot axis is hollow and substantially rectangular.
  • said mounting means defines a pivot axis; and wherein the configuration of said cover in a vertical cross-section extending substantially normal through said pivot axis is hollow and substantially trapezoidal.
  • a combination as defined in claim 1 said cover having a lower side which faces downwardly away from said lower end portion when said cover is in said closed position; and wherein said cover is provided with a sealed air chamber at said lower side.

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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)
  • Pipe Accessories (AREA)
US35801173 1972-05-06 1973-05-07 Conduit closure Expired - Lifetime US3838706A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19722222406 DE2222406A1 (de) 1972-05-06 1972-05-06 Universal-abflussclown - selbstreinigender, schwenkbarer abfluss fuer abwasserbeseitigung, gasdicht und rueckflussverhinderer
DE19722227419 DE2227419C3 (de) 1972-06-06 1972-06-06 Rückstauverschluß für Abwässer

Publications (1)

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US3838706A true US3838706A (en) 1974-10-01

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US35801173 Expired - Lifetime US3838706A (en) 1972-05-06 1973-05-07 Conduit closure

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US (1) US3838706A (enrdf_load_stackoverflow)
AT (1) AT328382B (enrdf_load_stackoverflow)
DD (1) DD103290A1 (enrdf_load_stackoverflow)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190910A (en) * 1977-03-02 1980-03-04 Ab Gustavsberg Plumbing apparatus including means for producing a water-plug effect in sanitation appliances
US4215716A (en) * 1977-01-13 1980-08-05 Adam Klenk One-way conduit closure
US4744109A (en) * 1986-04-16 1988-05-17 Yuill Grenville K Gas-sealing insert for floor drains
US5419359A (en) * 1994-03-03 1995-05-30 Murray A. Grant Gas and liquid backflow-preventing valve device for drains
ES2142217A1 (es) * 1997-02-11 2000-04-01 Palomo Garcia Meliton Sumidero o imbornal hermetico con apertura y cierre automaticos.
FR2794152A1 (fr) * 1999-05-28 2000-12-01 Bernard Sikora Obturateur a membrane pour regard de collecteur d'assainissement contre la remontee des odeurs
NL1022727C2 (nl) * 2003-02-18 2004-08-19 Kwt Holding B V Afvoer ten behoeve van het lozen van bijvoorbeeld rioolwater, industrieel afvalwater en/of oppervlaktewater, alsmede de montage van een dergelijke afvoer, alsmede een klep.
US20080283626A1 (en) * 2006-09-01 2008-11-20 Uview Ultraviolet Systems Inc. Compositions and methods for eliminating microbial growth and preventing odors in vehicle hvac systems and passenger cabin and truck environments
US20090236293A1 (en) * 2008-03-18 2009-09-24 John Alvarado Drain grate system and methods
FR2955641A1 (fr) * 2010-01-28 2011-07-29 Peugeot Citroen Automobiles Sa Dispositif de surete pour un circuit de fluide
US20110240536A1 (en) * 2010-03-30 2011-10-06 Lung-Yuan Tseng Floor Drain Cover That Can Prevent Waste Water From Flowing Backward in a Floor Drain
US20120180881A1 (en) * 2011-01-19 2012-07-19 Michael Humphreys Overflow Valve For Prevention Of Water Vapor Loss
US8591729B2 (en) * 2011-11-20 2013-11-26 Jasem M. J. Alqanee Storm drain with water trap
USD699820S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Frame
USD699822S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Frame
USD699821S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Shim
USD722678S1 (en) 2012-12-12 2015-02-17 Canada Pipe Company ULC Grate
US20150203343A1 (en) * 2012-07-10 2015-07-23 Turbomeca Filler device for a fluid tank
US9127447B2 (en) 2013-01-24 2015-09-08 Canada Pipe Company ULC Frame for an inlet of a catch basin or manhole
US9157213B2 (en) 2013-03-05 2015-10-13 Canada Pipe Company ULC Eccentric frame for an inlet of a catch basin or manhole
CN105113613A (zh) * 2015-09-02 2015-12-02 杨晔辰 一种双翻板防臭地漏
US9279242B2 (en) 2013-03-13 2016-03-08 G2 Construction, Inc. Drain grate system and method
US9290968B2 (en) 2012-12-18 2016-03-22 Canada Pipe Company ULC Locking mechanism for a cover
WO2017031541A1 (en) * 2015-08-24 2017-03-02 Pump Pal Pty Ltd A non-return valve
US20180328016A1 (en) * 2017-05-11 2018-11-15 Helvex, S.A. De C.V Way out valve for urinals with a more efficient seal
CN108825827A (zh) * 2018-06-22 2018-11-16 中广核研究院有限公司 偏心旋启式止回阀
US11320057B2 (en) * 2019-02-05 2022-05-03 Reseau Drain Corp. Anti-rat valve and flap therefor
US11346094B2 (en) * 2018-07-26 2022-05-31 Landroad Inc Storm drain filters
US20220167609A1 (en) * 2020-12-02 2022-06-02 Denis Friezner Vector Control Screen For Stormwater Treatment Systems
US20220251819A1 (en) * 2021-02-09 2022-08-11 Denis Friezner Method and Apparatus for Controlling Hazardous Materials Disposed Within a Storm Water Control System
US20250034852A1 (en) * 2022-07-21 2025-01-30 Chengxu Jiang Sealing device having positive and negative pressure resistant water seal protection function

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US183279A (en) * 1876-10-17 Improvement in drain-traps
US195137A (en) * 1877-09-11 Improvement in traps for waste-pipes
US227614A (en) * 1880-05-18 Automatic sewer-trap
US233104A (en) * 1880-10-12 Sink-trap
US576790A (en) * 1897-02-09 Sanitary
US633510A (en) * 1899-03-20 1899-09-19 Aaron C Freed Sink-trap.
CH43867A (de) * 1908-08-07 1909-06-16 Baptiste Bardel Guillaume Jean Obturateur automatique à chasse d'eau pour bouches d'égout
US1066316A (en) * 1912-05-25 1913-07-01 David H Piper Catch-basin.
US1606396A (en) * 1922-06-09 1926-11-09 Claes J Blom Backwater valve
US2638178A (en) * 1950-07-17 1953-05-12 Harry C Riechman Backflow check float for sewers

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US183279A (en) * 1876-10-17 Improvement in drain-traps
US195137A (en) * 1877-09-11 Improvement in traps for waste-pipes
US227614A (en) * 1880-05-18 Automatic sewer-trap
US233104A (en) * 1880-10-12 Sink-trap
US576790A (en) * 1897-02-09 Sanitary
US633510A (en) * 1899-03-20 1899-09-19 Aaron C Freed Sink-trap.
CH43867A (de) * 1908-08-07 1909-06-16 Baptiste Bardel Guillaume Jean Obturateur automatique à chasse d'eau pour bouches d'égout
US1066316A (en) * 1912-05-25 1913-07-01 David H Piper Catch-basin.
US1606396A (en) * 1922-06-09 1926-11-09 Claes J Blom Backwater valve
US2638178A (en) * 1950-07-17 1953-05-12 Harry C Riechman Backflow check float for sewers

Cited By (41)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4215716A (en) * 1977-01-13 1980-08-05 Adam Klenk One-way conduit closure
US4190910A (en) * 1977-03-02 1980-03-04 Ab Gustavsberg Plumbing apparatus including means for producing a water-plug effect in sanitation appliances
DK151309B (da) * 1977-03-02 1987-11-23 Gustavsberg Ab Ventil til dannelse af en vaeskeprop i udloebet fra en klosetskaal.
US4744109A (en) * 1986-04-16 1988-05-17 Yuill Grenville K Gas-sealing insert for floor drains
US5419359A (en) * 1994-03-03 1995-05-30 Murray A. Grant Gas and liquid backflow-preventing valve device for drains
ES2142217A1 (es) * 1997-02-11 2000-04-01 Palomo Garcia Meliton Sumidero o imbornal hermetico con apertura y cierre automaticos.
FR2794152A1 (fr) * 1999-05-28 2000-12-01 Bernard Sikora Obturateur a membrane pour regard de collecteur d'assainissement contre la remontee des odeurs
EP1449971A1 (en) * 2003-02-18 2004-08-25 KWT Holding B.V. Drain for discharging waste water and/or surface water, mounting of such a drain and valve therefor
NL1022727C2 (nl) * 2003-02-18 2004-08-19 Kwt Holding B V Afvoer ten behoeve van het lozen van bijvoorbeeld rioolwater, industrieel afvalwater en/of oppervlaktewater, alsmede de montage van een dergelijke afvoer, alsmede een klep.
US20080283626A1 (en) * 2006-09-01 2008-11-20 Uview Ultraviolet Systems Inc. Compositions and methods for eliminating microbial growth and preventing odors in vehicle hvac systems and passenger cabin and truck environments
US9498552B2 (en) * 2006-09-01 2016-11-22 Cps Products Canada Ltd. Compositions and methods for eliminating microbial growth and preventing odors in vehicle HVAC systems and passenger cabin and truck environments
US20090236293A1 (en) * 2008-03-18 2009-09-24 John Alvarado Drain grate system and methods
FR2955641A1 (fr) * 2010-01-28 2011-07-29 Peugeot Citroen Automobiles Sa Dispositif de surete pour un circuit de fluide
US20110240536A1 (en) * 2010-03-30 2011-10-06 Lung-Yuan Tseng Floor Drain Cover That Can Prevent Waste Water From Flowing Backward in a Floor Drain
US20120180881A1 (en) * 2011-01-19 2012-07-19 Michael Humphreys Overflow Valve For Prevention Of Water Vapor Loss
US8499785B2 (en) * 2011-01-19 2013-08-06 Apricus Inc Overflow valve for prevention of water vapor loss
US8591729B2 (en) * 2011-11-20 2013-11-26 Jasem M. J. Alqanee Storm drain with water trap
US9561949B2 (en) * 2012-07-10 2017-02-07 Turbomeca Filler device for a fluid tank
US20150203343A1 (en) * 2012-07-10 2015-07-23 Turbomeca Filler device for a fluid tank
USD722678S1 (en) 2012-12-12 2015-02-17 Canada Pipe Company ULC Grate
USD734838S1 (en) 2012-12-12 2015-07-21 Canada Pipe Company ULC Grate
USD699821S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Shim
USD722679S1 (en) 2012-12-12 2015-02-17 Canada Pipe Company ULC Frame
USD699822S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Frame
USD699820S1 (en) 2012-12-12 2014-02-18 Canada Pipe Company ULC Frame
US9290968B2 (en) 2012-12-18 2016-03-22 Canada Pipe Company ULC Locking mechanism for a cover
US9127447B2 (en) 2013-01-24 2015-09-08 Canada Pipe Company ULC Frame for an inlet of a catch basin or manhole
US9157213B2 (en) 2013-03-05 2015-10-13 Canada Pipe Company ULC Eccentric frame for an inlet of a catch basin or manhole
US9279242B2 (en) 2013-03-13 2016-03-08 G2 Construction, Inc. Drain grate system and method
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CN105113613A (zh) * 2015-09-02 2015-12-02 杨晔辰 一种双翻板防臭地漏
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US20220251819A1 (en) * 2021-02-09 2022-08-11 Denis Friezner Method and Apparatus for Controlling Hazardous Materials Disposed Within a Storm Water Control System
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Also Published As

Publication number Publication date
ATA397173A (de) 1975-05-15
AT328382B (de) 1976-03-25
DD103290A1 (enrdf_load_stackoverflow) 1974-01-12

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