US3815161A - Swimming pool surface skimming weir - Google Patents
Swimming pool surface skimming weir Download PDFInfo
- Publication number
- US3815161A US3815161A US00351810A US35181073A US3815161A US 3815161 A US3815161 A US 3815161A US 00351810 A US00351810 A US 00351810A US 35181073 A US35181073 A US 35181073A US 3815161 A US3815161 A US 3815161A
- Authority
- US
- United States
- Prior art keywords
- weir
- skimmer
- throat
- swimming pool
- water
- 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
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H4/00—Swimming or splash baths or pools
- E04H4/12—Devices or arrangements for circulating water, i.e. devices for removal of polluted water, cleaning baths or for water treatment
- E04H4/1209—Treatment of water for swimming pools
- E04H4/1272—Skimmers integrated in the pool wall
Definitions
- ABSTRACT A weir for use in a swimming pool skimmer is pivotally mountable in the throat of the skimmer and has a large flat surface facing toward the entrance to the throat.
- the upper end of the weir is also a flat surface, the plane of which intersects the plane of the other flat surface at an angle of about 45.
- the weir is hollow under the angularly disposed surface and that surface terminates in a sharp edge, so that when water is drawn from the pool into the skimmer to achieve a skimming action, the water flows across the sloping surface in close and quite uniform proximity thereto regardless of the angle of inclination of the weir. and dips downwardly as it leaves the edge of the weir and enters the well of the skimmer.
- weirs differing from the conventional flat weir by having a flat to mildly convex surface presented toward the entrance of the throat of the skimmer and having at their upper ends various contours providing an acute angle of the intersection of the outer and inner surfaces.
- Such weirs were found to have improved skimming action over weirs previously known.
- a weir which embodies the present invention has, in common with weirs of the prior art, a broad flat surface facing outwardly from the skimmer throat toward the pool. It is biased to stand generally upright when a skimming operation is not in progress and the water in the pool is calm.
- a weir embodying the present invention does not have its top surface normal to its face, but has its top surface disposed in a plane sloping inwardly away from the poll at an angle of the order of 45 relative to the face of the weir.
- the free edge of the sloping surface is a thin, knife-like edge'and the weir is hollow below the sloping surface.
- the water level and water velocity conditions may be such that a weir embodying the present invention may move inwardly more than 45.
- the junction of its outer face and upper sloping surface is then completely submerged with the upper sloping surface sloping downwardly away from the quiescent water level condition.
- FIG. 1 is a vertical sectional view of the skimmer of a swimming pool having installed therein a weir in accordance with thepresent invention, the weir being partly broken away and shown in section;
- FIG. 2 is a perspective view of the weir shown in FIG. 1, viewing the weir from the inside.
- the reference numeral 10 designates the wall of a swimming pool and in accordance with a common practice the wall is topped by a coping 12.
- An opening is provided in the wall of the swimming pool below the coping l2 and in location which includes the usual level 13 of water that is maintained in the pool.
- the swimming pool skimmer designated generally by the reference numeral 14.
- the skimmer 14 may comprise, according to previously known design, a housing 16 and a throat 18 which communicates with the swimming pool at the normal water surface level.
- the throat 18 is defined by side walls 20 and upper and lower walls 22 and 24 respectively.
- a main drain conduit 32 is shown as connecting to the well 33 of the housing 16.
- a weir is pivotally mounted on the lower wall 24 of the skimmer 18 by means of pivots 42.
- the weir 40 is a hollow shell and a preferred embodiment thereof is molded of plastic.
- plastic which are suitable for the purpose, an example being an ABS resin which is usually a mixture of styrene-acrylonitrile copolymer with acrylonitrilebutadiene rubber.
- ABS resin which is usually a mixture of styrene-acrylonitrile copolymer with acrylonitrilebutadiene rubber.
- thermoplastic resins with high impact strength, high heat distortion strength, and are resistant to action of most solvents, oils and chemicals.
- the weir could, of course, be fabricated from metal, but it needs to have a high resistance to corrosion in view of the usage in the swimming pool of chemicals, such as chlorine and an acid to counteract bacteria and the formation of algae.
- the weir 40 is in the form of a hollow shell and its outside, the side that is presented toward the swimming pool when the weir is mounted in the throat 18 of the skimmer, is comprised of three panels,-namely a major panel 44 and two minor panels 46 and 48.
- the panels 46 and 48 may be considered as extensions of the major panel 44 and may be integral therewith, blending or merging into one another in a curvature 50 of relatively short radius.
- End panels 52 bridge the end of the minor panels 46 and 48 and complete the shell, so that from the inside the weir has a generally rectangular configuration.
- the width of the weir from one end panel 52 to the other is only slightly less thanthe width of the skimmer throat to permit free pivoting of the weir, while extending across substantially the entire throat width.
- the weir 40 may be provided with stiffening or reinforcing walls 54 extending across from one end panel 52 to the other and it may be further reinforced by gussets 56 joining the lower reinforcing wall 54 to the inside surface of the minor panel 48 and by gussets 58 joining the upper reinforcing wall 54 to the inside surface of the minor panel 46. It will be understood that all of the reinforcing components 54, 56 and 58 may be integral parts of a weir produced by a molding process.
- the hinge pins 42 at the lower ends of the side walls 52 of the weir 40 may also be integral with those side walls and formed by molding. It follows from this that the side walls 20 of the throat 18 of the skimmer will be provided with cylindrical sockets (not shown) to receive the hinge pins 42. As indicated by the reference numeral 60 in FIG. 2 the minor panel 48 of the weir may be slotted adjacent to the locations of the hinge pins 42 on the end panels 52 so that'the hinge pins 42 are carried by a yieldable portion of the end plates 52, the end plates being thin enough to be flexible so that the hinge pins 42 may be snapped into the sockets provided in the walls 22 of the weir to receive the hinge pins 42.
- a block 62 of material having a specific gravity less than that of water, such as expanded polystyrene is fitted into the interior of the weir in the space bounded by the end plates 52 and the reinforcing walls 54. As specifically shown in FIG.
- the two reinforcing gussets 58 and the two inner ones of the four gusstes 56 may have attached thereto, in spaced relation to the outer surfaces of the walls 58, flange segments 64 which receive and frictionally retain right angled clips 66 which overlie the exposed surface of the block 62 of polystyrene and retain it in the weir..
- minor panels 46 and 48 the planes of which, with that of the major panel 44, form the outer face of the weir.
- the slope of the minor panel 48 relative to that of the major panel 44 has the principal purpose of providing clearance at the bottom of the weir for pivotal mounting adjacent to the flange 72, but the angle between the planes of these two surfaces is not particularly critical.
- the angle of the plane of the minor panel 46 of the face of the weir relative to the plane of the major panel 44 be such as to position the minor panel 46 substantially horizontal or preferably very slightly inclined downward toward the housing 16 when the weir is in operation as shown in FIG. 1.
- the downward inclination should not exceed about It has been found that, in the preferred embodiment, this is. accomplished when the angle between the planes of the minor panel 46 and the major panel 44 is generally'in the neighborhood of 45.
- Another significant aspect of the geometry of the weir is that the free edge of the minor panel 46 of the weir 40- is tapered to approximately knife edge thinness forming at the free edge a lip 74.
- a further aspect of the geometry of the weir is that, interiorly, between the inner surface of the minor panel 46 and the upper strenghtening wall 54, the weir is hollow.
- FIG. 1 displays in phantom the normal position of the weir 40 when the circulating pump is off. The weir then issubstantially upright and prevents debris from floating back out of the housing 16 into the pool.
- FIG. 1 shows in solid lines a typical water surface condition in relation to the weir when the skimmer is in operation.
- the circulating equipment of the pool draws water out of the skimmer well 33 through the conduit 30, thereby causing the weir to move pivotally in a clockwise direction until it is beneath the surface of the pool water. Water from the pool then continuously flows over the weir and through the well 33.
- the major panel 44 is submerged and the minor panel 46 is slightly submerged just below the water surface, and is horizontal, or preferably slightly inclined downward as shown.
- Another observed advantage of the weir embodying the invention is a lessening in the tendency for the formation of a vortex or whirlpool in the well 33 of the skimmer. It is well known that when liquids drain rapidly from basins such draining is frequently accompanied by the formation of a vortex or whirlpool and there is a tendency for air to be drawn into the vortex and be carried along with the liquid being drained off. Such air, trapped in the water being drawn into the circulatory system of a swimming pool, may be detrimental to the operation of the pumping equipment, and avoidance of a vortex is desirable. Again, not wishing to be bound by any particular explanation, it is theorized that the circulation of water beneath the lip 74 indicated by the dotted line path 96 has a markedinhibiting effect upon the formation of a vortex in the pit of the skimmer.
- a swimming pool surface skimmer of the type which includes a skimmer throat for receiving water from the swimming pool, and a skimmer weir assembly in said throat for moving as the water level in the swimming pool changes, the improvement wherein the weir assembly comprises:
- a pivotally mounted body exposing a first surface facing toward the entrance to said throat and a second substantially flat surface forming the upper end of the weir and disposed in a plane intersecting the plane of said first surface in an acute angle such that in operation said second substantially flat surface is nearly parallel to the surface of the flowing water at the point of passage of the water across said second surface.
- any observable departure from parallelism between said second substantially flat surface and the surface of the water flowing across it is convergence of the planes of second surface and the water surface in the direction of the flow of the water.
- a swimming pool skimmer in accordance with claim 1 wherein:
- said pivotally mounted body has associated therewith means for buoyantly biasing the body to seek a vertical position.
- a swimming pool skimmer in accordance with claim 4 wherein:
- biasing means is a removably attached mass of expanded polystyrene.
- the first surface is substantially flat and the angle of intersection of the planes of said first and second substantially flat surfaces is approximately 45.
- a swimming pool skimmer in accordance with claim 1 wherein:
- the free edge of said second surface is a sharp knifelike edge.
- an open cavity is disposed immediately below said second surface.
- a swimming pool surface skimmer of the type which includes a housing, a skimmer throat for fluid communication between the housing interior and the swimming pool, and a skimmer weir assembly in said throat for moving as the water level in the swimming pool changes, the improvement wherein the weir assembly comprises:
- a pivotally mounted body exposing a first surface facing toward the entrance to said throat and a second substantially flat surface forming the upper end of the weir and disposed in a plane intersecting the plane of said first surface in an acute angle with its free edge being generally a sharp edge so that in skimming operation said second substantially flat surface and the surface of the flowing water at the point of passage of the water across said second surface are substantially parallel and the water surface dips substantially after leaving the sharp edge.
- said weir body has side plates associated with the portions exposing said first and second surfaces and thereby provides an open cavity facing away from the skimmer throat.
- a weir for use in the throat of the skimmer of a swimming pool which comprises:
- I means for biasing said weir in a direction to cause it to seek a vertical altitude. 14.
- side panels are associated with the major and minor panels to form an open cavity facing away from the entrance to the skimmer throat.
- a weir in accordance with claim 16 having mounted in said cavity means for buoyantly biasing said weir to seek an upright position extending above the water level.
- a weir for use in the throat of the skimmer of a swimming pool which comprises:
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Water Supply & Treatment (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Removal Of Floating Material (AREA)
Abstract
Description
Claims (18)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00351810A US3815161A (en) | 1973-04-16 | 1973-04-16 | Swimming pool surface skimming weir |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00351810A US3815161A (en) | 1973-04-16 | 1973-04-16 | Swimming pool surface skimming weir |
Publications (1)
Publication Number | Publication Date |
---|---|
US3815161A true US3815161A (en) | 1974-06-11 |
Family
ID=23382505
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US00351810A Expired - Lifetime US3815161A (en) | 1973-04-16 | 1973-04-16 | Swimming pool surface skimming weir |
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US (1) | US3815161A (en) |
Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969777A (en) * | 1975-02-24 | 1976-07-20 | Beller Sidney J | Overflow-siphoning device for swimming pools and the like |
US4253202A (en) * | 1979-08-10 | 1981-03-03 | Forbes Norris | Automatic adjusting wave gutter for swimming pools |
US4268394A (en) * | 1980-03-28 | 1981-05-19 | Sybron Corporation | Beach for the scum trough of a sewage settling tank or the like |
US4494257A (en) * | 1983-04-07 | 1985-01-22 | Peirish Howard W | Flow control device |
US5755257A (en) * | 1994-05-03 | 1998-05-26 | Bgu Baugesellschaft Fur Umweltschutzanlagen Mbh | Retention gate |
WO2003008740A1 (en) * | 2001-07-14 | 2003-01-30 | Wts | Skimmer for a swimming pool |
WO2003008739A1 (en) * | 2001-07-14 | 2003-01-30 | Wts | Skimmer for a swimming pool |
WO2010077695A1 (en) * | 2008-12-08 | 2010-07-08 | Last Harry J | Automated pool-deck lid lift system for below deck pool cover housing troughs |
US20110290343A1 (en) * | 2009-02-04 | 2011-12-01 | Nippon Koei Co., Ltd. | Opening/closing device |
US20110297250A1 (en) * | 2009-02-04 | 2011-12-08 | Nippon Koei Co., Ltd. | Opening/closing device |
US10662666B2 (en) | 2018-05-23 | 2020-05-26 | Jackson Pools, Inc. | Swimming pool skimmer including slidable weir gate and related methods |
US20210039022A1 (en) * | 2018-02-02 | 2021-02-11 | Abp - Aquilina Bouvier Pool | Filter for a filtration device |
USD934988S1 (en) | 2018-05-23 | 2021-11-02 | Jackson Pools, Inc. | Swimming pool skimmer |
US20230220693A1 (en) * | 2022-01-07 | 2023-07-13 | Blue Square Manufacturing, Llc | Skimmer Cover Assembly |
US20230358066A1 (en) * | 2022-05-04 | 2023-11-09 | Ryan Christopher Jones | Skimmer spillway apparatus |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3067879A (en) * | 1959-02-02 | 1962-12-11 | Swimquip Inc | Skim tank |
US3087335A (en) * | 1960-05-23 | 1963-04-30 | David K Cavenah | Flow rate indicator |
US3169920A (en) * | 1961-01-03 | 1965-02-16 | Robert T Payne | Pool service unit |
US3555574A (en) * | 1969-08-07 | 1971-01-19 | Swimquip Inc | Spring loaded weir for pool skimmers |
US3567020A (en) * | 1969-05-28 | 1971-03-02 | Brackston T Whitaker | Pool skimmer |
US3701427A (en) * | 1971-01-11 | 1972-10-31 | Marine Swimming Pool Equipment | Swimming pool skimmer with vacuum and sweeping controls |
-
1973
- 1973-04-16 US US00351810A patent/US3815161A/en not_active Expired - Lifetime
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3067879A (en) * | 1959-02-02 | 1962-12-11 | Swimquip Inc | Skim tank |
US3087335A (en) * | 1960-05-23 | 1963-04-30 | David K Cavenah | Flow rate indicator |
US3169920A (en) * | 1961-01-03 | 1965-02-16 | Robert T Payne | Pool service unit |
US3567020A (en) * | 1969-05-28 | 1971-03-02 | Brackston T Whitaker | Pool skimmer |
US3555574A (en) * | 1969-08-07 | 1971-01-19 | Swimquip Inc | Spring loaded weir for pool skimmers |
US3701427A (en) * | 1971-01-11 | 1972-10-31 | Marine Swimming Pool Equipment | Swimming pool skimmer with vacuum and sweeping controls |
Cited By (24)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3969777A (en) * | 1975-02-24 | 1976-07-20 | Beller Sidney J | Overflow-siphoning device for swimming pools and the like |
US4253202A (en) * | 1979-08-10 | 1981-03-03 | Forbes Norris | Automatic adjusting wave gutter for swimming pools |
US4268394A (en) * | 1980-03-28 | 1981-05-19 | Sybron Corporation | Beach for the scum trough of a sewage settling tank or the like |
US4494257A (en) * | 1983-04-07 | 1985-01-22 | Peirish Howard W | Flow control device |
US5755257A (en) * | 1994-05-03 | 1998-05-26 | Bgu Baugesellschaft Fur Umweltschutzanlagen Mbh | Retention gate |
WO2003008740A1 (en) * | 2001-07-14 | 2003-01-30 | Wts | Skimmer for a swimming pool |
WO2003008739A1 (en) * | 2001-07-14 | 2003-01-30 | Wts | Skimmer for a swimming pool |
CZ302610B6 (en) * | 2001-07-14 | 2011-08-03 | WTS Kereskedelmi és Szolgáltató Kft. | Surface skimmer |
WO2010077695A1 (en) * | 2008-12-08 | 2010-07-08 | Last Harry J | Automated pool-deck lid lift system for below deck pool cover housing troughs |
GB2479481A (en) * | 2008-12-08 | 2011-10-12 | Harry J Last | Automated pool-deck lid lift system for below deck pool cover housing troughs |
GB2479481B (en) * | 2008-12-08 | 2014-06-25 | Harry J Last | Pool cover system and pool-deck lid lift system for below deck pool cover housing troughs |
US8590560B2 (en) * | 2009-02-04 | 2013-11-26 | Nippon Koei Co., Ltd. | Opening/closing device |
US20110297250A1 (en) * | 2009-02-04 | 2011-12-08 | Nippon Koei Co., Ltd. | Opening/closing device |
US8695628B2 (en) * | 2009-02-04 | 2014-04-15 | Nippon Koei Co., Ltd. | Opening/closing device |
US20110290343A1 (en) * | 2009-02-04 | 2011-12-01 | Nippon Koei Co., Ltd. | Opening/closing device |
US20210039022A1 (en) * | 2018-02-02 | 2021-02-11 | Abp - Aquilina Bouvier Pool | Filter for a filtration device |
US11524252B2 (en) * | 2018-02-02 | 2022-12-13 | ABP—Aquilina Bouvier Pool | Filter for a filtration device |
US10662666B2 (en) | 2018-05-23 | 2020-05-26 | Jackson Pools, Inc. | Swimming pool skimmer including slidable weir gate and related methods |
US10920439B2 (en) | 2018-05-23 | 2021-02-16 | Jackson Pools, Inc. | Swimming pool skimmer including slidable weir gate and related methods |
US10961737B2 (en) | 2018-05-23 | 2021-03-30 | Jackson Pools, Inc. | Swimming pool skimmer including slidable weir gate and related methods |
USD934988S1 (en) | 2018-05-23 | 2021-11-02 | Jackson Pools, Inc. | Swimming pool skimmer |
US20230220693A1 (en) * | 2022-01-07 | 2023-07-13 | Blue Square Manufacturing, Llc | Skimmer Cover Assembly |
US11976490B2 (en) * | 2022-01-07 | 2024-05-07 | Blue Square Manufacturing, Llc | Skimmer cover assembly |
US20230358066A1 (en) * | 2022-05-04 | 2023-11-09 | Ryan Christopher Jones | Skimmer spillway apparatus |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: BAKER-HYDRO INCORPORATED, A CORP. OF PA, PENNSYLVA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:TOLO INCORPORATED;REEL/FRAME:005006/0697 Effective date: 19881101 Owner name: TOLO INCORPORATED, A CORP. OF CA, CALIFORNIA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BAKER-HYDRO INCORPORATED;REEL/FRAME:005006/0695 Effective date: 19861001 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF BOSTON, THE, MASSACHUSETTS Free format text: SECURITY INTEREST;ASSIGNOR:BAKER-HYDRO INCORPORATED;REEL/FRAME:005075/0632 Effective date: 19880923 |
|
AS | Assignment |
Owner name: BAKER-HYDRO INCORPORATED, R.D. #5, BOARD ROAD, BOX Free format text: RELEASED BY SECURED PARTY;ASSIGNOR:FIRST NATIONAL BANK OF BOSTON, THE;REEL/FRAME:005617/0047 Effective date: 19901130 |