WO2001053616A1 - Flushing mechanism for a dual flush cistern - Google Patents
Flushing mechanism for a dual flush cistern Download PDFInfo
- Publication number
- WO2001053616A1 WO2001053616A1 PCT/IB2001/000021 IB0100021W WO0153616A1 WO 2001053616 A1 WO2001053616 A1 WO 2001053616A1 IB 0100021 W IB0100021 W IB 0100021W WO 0153616 A1 WO0153616 A1 WO 0153616A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- float
- cistern
- rod
- tne
- float assembly
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03D—WATER-CLOSETS OR URINALS WITH FLUSHING DEVICES; FLUSHING VALVES THEREFOR
- E03D1/00—Water flushing devices with cisterns ; Setting up a range of flushing devices or water-closets; Combinations of several flushing devices
- E03D1/02—High-level flushing systems
- E03D1/14—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves
- E03D1/142—Cisterns discharging variable quantities of water also cisterns with bell siphons in combination with flushing valves in cisterns with flushing valves
Definitions
- This invention relates to a flushing mecna ⁇ ism for a dual flush cistern
- the cistern -s divided into two parts by a weir having a movable gate such that when a Dartial flush is required the gate remains closed and only the ii ⁇ uid on one side of the weir is released through the cistern outlet out wnen a full flusn is required the gate is opened allowing liquid en ooth sides of the weir to pass through the outlet.
- Examples of such dual flush mechanisms are disclosed in AU-B-56165/30 and WO93/1528 ⁇
- Another type of dual flushing mechanism relies on closing the outlet valve after different times deoendi ⁇ g on wnether a full or oart.al flush is required
- the prior art mechanisms generally include a float assembly comprising a float associated with the valve stem of the outlet closure valve and either attacned to or slideable on the valve stem The float re ⁇ uces the negative buoyancy of the float assembly so that the float assembly sinks at a slower rate to close the valve than it would do if the float were not present
- This invention provides a dual flush system comprising a float assembly comprising a hollow valve stem carrying a sealing valve for sealing the outlet opening of the cistern at or towards one end and being open at eacn end to define an overflow passage and a float fixedly attached around the valve stem a cylindrical guide member surrounding the float and navi ⁇ g at the end adjacent the sealing valve at least one opening to allow liquid to pass to the outlet opening, an operating rod arranged to move vertically upward to raise the float assembly to open the valve, first and second operating means arranged to effect such vertical movement of the operating rod, the first operating means, on operation being arranged to raise the float assembly a first distance, and the second operating means being arranged to raise the float assembly a second distance less than the first distance whereby wnen the first oDerating means is ooeratec and released a first predetermined quantity of liquid flows from tne cistern and when the second operating means is operated and released a second smaller predetermined quantity of liquid flows from the cister
- the second operating means on operation in addition to raising the float assembly also operates a stop mechanism acting on some part of the float assembly to prevent movement of the float assem ⁇ ly greater than the second distance
- such stop mechanism comprises a rod which, on operation of the second operating means, is introduced into the float guide member to a predetermined level to contact the upper surface of the float when the float nas reached the desired height
- the stop mechanism is adjustable to allow fine-tuning of the quantity of liquid that flows from tne cistern in a partial flusn This may be achieved by me ⁇ ns of a screw tnread on the rod oy means of vvn
- the ODerating mecnanism is preferably carried on a oracket wnicn is mounted on the side of tne float guide means, the length of wnich is oreferaDiy adjustable to allow the mecnanism to be used in cisterns of different neight In a mechanism in which the length of the bracket is adjustaDie tne length of the coerating roc and of the stop rod. 'when present must also be adiustaois
- tne connection oetween tne operating means and the float assembly como ⁇ ses a rod or oar with a plurality of spaced holes at least at its end adjacent to the loat assemoly wnicn cooperates with a bracket on the float guide memoer whic ⁇ aiso nas at least one hole through which a fixing pin can be passed into one of the noles on the oracket.
- the operating rod and the stop rod may be telescooic and mayoe held together by locating pins which can pass through locating hoies. as necessary.
- the rod is preferably mounted in a U-snaped rod carrier and the locating pins are permanently attached to the rod so that the rod can be rotated to snap the pin into and cut of one of a plurality of notches on the rod carrier.
- the rod carrier may be mounted by a screw thread on the second operating means to allow fine adjustment of the effective iength of tne rod.
- Fig 1 is an isometric view of one form of flusning mechanism according to the invention in the closed Dosition of the valve
- Fig 2 is an isometric view of the valve mechanism of fig 1 in the full flush position
- Fig 3 is an isometric view of tne mecnanism of fig 1 in the oartiai flush position
- Fig 4 is a section through the mecnanism of fig 1 in tne full flush oosmon but with tne stoo rod not shown
- Fig 5 is a view as in fig 4 but in the paraal flusn ocsition
- the flusning mecnanism comorises a rioat assemDly C indicated generally by r eference numeral 1 wnicn comorises a vaive stem 2 wnicn 'S nollow and ooen at Doth ends and carries ⁇ owarcs one eno a vaive closure member 3 wnicn seats on a valve seat 4 on a fixture me oer 5 ov wnicn the float assemDly 1 is mounted to the outlet 1 (not snown) of a toilet system ' also not shown)
- Float assemDly 1 also includes a float 6 .n the form of an . ⁇ vertec cup
- cylindrical portion 7 On its outer surface cylindrical portion 7 carries a ⁇ racket 12 for mounting a sucport arm 13 for the flush operating mecnanism
- the suoport arm 13 is cranked at its upper end 14 and terminates in a yoke 15 supporting a oivotaliy mounted operating lever 16
- One end of lever 16 is attached to a cranked ODerating rod 17 25 which extends into cylindrical portion 7 the portion within cylindrical ootion 7 being attacned to valve stem 2 oy means of a collar 18 which abuts against the underside of a flange 19 on valve stem 2
- Collar 18 is attached to ODerating red 15 by means of a pin 20 wnich passes into one of a numDer of noies 2 ⁇ ⁇ operating rod 17
- Downward pressure on the end of lever 15 remote from the connection oi operating rod 17 causes operating rod 17 to move upwardly carrying the float assembly 1 with it and thereby causing the valve 3, 4 to open to allow liquid to
- Support arm 13 is connected to bracket 12 oy means of locking pins (not shown) engaging in one or more of holes 22 in supporting arm 13 so that the distance between the ODerating mechanism and the float assembly 1 can be varied to suit cisterns of different heignt
- Operating rod 17 is formed in two parts connected by means of pins 23 locating in holes 24 in the two Darts of the operating rod 1 7 thereby allowing length adjustment of operating rod 17
- the ooeratmg mechanism includes two Dush outtons 25 26 wnich serve to depress the eno of lever 16 remote from the connection of ODerating rod 1 7
- the Dush outto ⁇ s 25 25 are spring loaded so that they are biased to an inoperative oositio ⁇
- Each of pusn buttons 25, 26 has a projection 27 28 on its lower surface wnicn when a button 25 26 is pressed acts on lever 16 to move operating rod 17 upwardly Projection 27 on the full flush button 26 is longer than tne projection 28 on partial flush button 26, so that when push button 25 is pressed, the ODerating rod 17 is lifted by a greater distance and hence lifts the float assembly further away from tne valve seat 6 then when push button 26 is pressed
- the projection 28 on push button 26 is connected to a further lever 29 wnich at one end 30 overlaps the operative end of lever 16 and at the other end 31 is attached to a stop rod 32 via a U-shaped rod carrier 33 Stoo rod 32 oasses through a guide 34 on the rim of cylindrical portion 7 Depression of button 26 causes projection 28 in addition to causing operating rod 16 to move uowardly thereby raising the float assembly 1 also depresses stop rod 33 within cylindrical portion 7 to further limit the pcs ⁇ ibie movement of float assemDly 1
- Rod carrier 31 is attached to lever 29 by means of a screw 34 wnich passes through a screw-threaded bore in end 31 of lever 29 to allow adjustment of the distance between rod carrier 33 and lever 29 thereby allowing fine tuning of the distance that rod 32 extends into cylind ⁇ cal portion 7
- carrier member 33 has a plurality of notches 35 into which a pin 36 protruding from the surface of rod 32 can be snapped to allow larger adjustment of the effective te ⁇ gtn of rod 31
- float assemDly 1 is r a ⁇ sed oy means of ooerating red 17 to a level sucn that the too of float 6 aimcs: reac ⁇ es the upper edge of cylindrical portion 7 At this level tne air trapped under rioat 5 .s sufficient to make float assembly 1 buoyant so that the float assemoiy 1 ooes not sink under its own weignt wnen push button 25 is released but instead merely falls ss the water level in the cistern drops
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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)
- Float Valves (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU25405/01A AU779984B2 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
IL15080301A IL150803A0 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
NZ520306A NZ520306A (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
US10/181,764 US6785913B2 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
DE60121298T DE60121298T2 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a double cistern |
EP01900570A EP1252399B1 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
CA002398361A CA2398361A1 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MY20000193 | 2000-01-20 | ||
MY0000193 | 2000-01-20 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001053616A1 true WO2001053616A1 (en) | 2001-07-26 |
Family
ID=19749441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IB2001/000021 WO2001053616A1 (en) | 2000-01-20 | 2001-01-12 | Flushing mechanism for a dual flush cistern |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO2001053616A1 (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5331690A (en) * | 1991-08-09 | 1994-07-26 | Societe Phoceene De Matieres Plastiques (S.P.M.P.) | Dual control flushing mechanism, enabling complete or partial evacuation of a toilet tank to be operated selectively |
US5956781A (en) * | 1996-02-20 | 1999-09-28 | James Hardie Research Pty Limited | Dual flush cistern |
-
2001
- 2001-01-12 WO PCT/IB2001/000021 patent/WO2001053616A1/en active IP Right Grant
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5331690A (en) * | 1991-08-09 | 1994-07-26 | Societe Phoceene De Matieres Plastiques (S.P.M.P.) | Dual control flushing mechanism, enabling complete or partial evacuation of a toilet tank to be operated selectively |
US5956781A (en) * | 1996-02-20 | 1999-09-28 | James Hardie Research Pty Limited | Dual flush cistern |
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