EP0074262A1 - Soupape de vidange pour réservoir de chasse - Google Patents
Soupape de vidange pour réservoir de chasse Download PDFInfo
- Publication number
- EP0074262A1 EP0074262A1 EP82304660A EP82304660A EP0074262A1 EP 0074262 A1 EP0074262 A1 EP 0074262A1 EP 82304660 A EP82304660 A EP 82304660A EP 82304660 A EP82304660 A EP 82304660A EP 0074262 A1 EP0074262 A1 EP 0074262A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- float
- valve
- flushing
- flush
- cistern
- 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.)
- Withdrawn
Links
Images
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
- E03D1/30—Valves for high or low level cisterns; Their arrangement ; Flushing mechanisms in the cistern, optionally with provisions for a pre-or a post- flushing and for cutting off the flushing mechanism in case of leakage
- E03D1/34—Flushing valves for outlets; Arrangement of outlet valves
-
- 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 cistern flush valve assembly.
- the present invention stems from attempts to produce a relatively uncomplicated yet reliable flush valve assembly of the dual flushing kind.
- a cistern flush valve assembly capable of permitting a low or a high volume flush incorporates a valve which is arranged to terminate flushing at least for a low volume flush, and a float associated with the valve, the arrangement being such that the float fills with air between flushes, but during flushing in the low volume mode loses air at a predetermined rate to reduce the buoyancy of the float which then closes the valve to arrest flushing before the cistern has been emptied.
- the float may be held in a raised position to provide a high volume flush.
- valve assemblies of the 'flapper' kind which are widely used in U.S.A. and Canada.
- valve assemblies employ a pivoted valve flap carrying a float and a valve member which normally sealingly closes an outlet from the cistern.
- the valve flap In use the valve flap is raised to initiate flushing and is retained in an upward position by its buoyancy, until the level of the water reaches the flap which then falls with the water level until the outlet is closed to allow the cistern to refill.
- flapper valve assemblies may in accordance with the inventipn be given a dual flushing characteristic by arranging for progressive loss of air from the float during flushing.
- one of the holes is in the base of the float, the float being considered to be vertical when the flap is in its closed position.
- Means is preferably provided to enable the timing of the closure of the valve in the low volume flush mode to be varied.
- the flap may be provided with a movable weight which can be secured at different distances from the flap pivot.
- the weight may be located on an arm which depends from the flap.
- means may be provided to enable the rate of air loss from the float to be adjusted.
- the position or size of a hole or holes in the float may be made adjustable for this purpose.
- the assembly comprises a tubular body 1 which is adapted to be sealingly secured in a hole in the base of a lavatory cistern by a nut 2 threadedly engaged with external screw threads 3 on body 1, the margin of the base surrounding the hole being clamped in use between the nut 2 and an annular resilient seal 4.
- the upper edge 5 of the body provides a valve seat against which a resilient sealing ring 6 carried by a flap assembly 7 is normally seated.
- Flap assembly 7 incorporates a float 8 and is made from upper and lower moulded plastics parts 9 and 10.
- the upper part 9 comprises a bowl portion 11 having a cylindrical rim 12 and from opposite sides of the bowl portion 11 depend a pair of parallel arms 13 which carry at their free ends respective trunnion pins 14 directed inwardly towards each other.
- the trunnion pins 14 are received with substantial vertical play in respective tubular bosses 15 provided on opposite sides of a branch pipe 16 integral with body 1.
- the lower part 10 of the flap assembly 7 is of inverted frusto-conical shape with a cylindrical rim 17 into which rim 12 is received and sealingly secured by adhesive.
- a radially outwardly facing annular recess 18 is defined between an annular flange 19 on bowl portion 11 and the upper edge 20 of rim 17 into which the radially inner margin of sealing ring 6 is sealingly received.
- Branch pipe 16 receives and is adhesively secured to a vertical overflow tube 21, and the interior of branch pipe 16 communicates freely with the bore of tubular body 1.
- Float 8 is provided with two holes 22 and 23, the hole 22 being formed in the base of lower part 10, and the hole 23 being formed in the upper part of the inclined sidewall of part 10, just below rim 17, and on the opposite side of float 8 from the trunnion pins 14.
- the holes 22 and 23 are positioned such that when the flap assembly is in its normal position with sealing ring 6 in sealing engagement with valve seat 5 the holes 22 and 23 both communicate with the bore of body 1.
- water will drain from the interior of the float 8 through lower hole 22 and air will enter the float through hole 23 from the bore of body 1.
- the cistern is provided with a single flushing handle, not shown, which is connected to a loop 24 at the upper end of a length of flexible plastics cord 25, the lower end of which is connected by a loop 26 to an eye 27 integrally formed on the top of bowl portion 11.
- the flushing handle In order to produce a low volume flush the flushing handle is pulled and released. On pulling the handle the cord 25 is raised to lift flap assembly 7 and pivot it about the lugs 15 thereby to break the. seal between ring 6 and valve seat 5 and allow water to flow from the cistern into the bore of body 1 which is connected to the lavatory pan. In the raised position an abutment face 28 on the bowl portion 11 engages with the overflow tube 21. When the float is raised it is full of air and its buoyancy maintains it in the raised position on release to the handle and the cord 25 going slack.
- both holes 22 and 23 are exposed to water in the cistern, and air begins to issue progressively from hole 23 as water.enters through hole 22, the hole 23 being located substantially at the top of the float when the flap assembly is in its raised position. After a predetermined time the float 8, still immersed in water, loses- sufficient buoyancy that it falls back to a closed position and terminates the flushing action.
- the time at which the flushing action is terminated, and therefore the volume of water delivered in the low volume mode of flushing is determined by the rate at which air is lost from the float, and this depends upon the dimensions of the holes and upon their positions.
- a suitable arrangement is most easily achieved by trial and error to ensure that when, say, half of the initial volume of water in the cistern has been delivered the flap assembly 7 closes.
- a predetermined volume of water is delivered merely by pulling and releasing the operating handle, and this volume does not depend upon how long the operating handle is held before it is released, providing of course that it is not held longer that the predetermined time at which the flap assembly 7 is ready to fall.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8127294 | 1981-09-09 | ||
GB08127294A GB2106155A (en) | 1981-09-09 | 1981-09-09 | Dual flush valve-discharge cistern |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0074262A1 true EP0074262A1 (fr) | 1983-03-16 |
Family
ID=10524409
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP82304660A Withdrawn EP0074262A1 (fr) | 1981-09-09 | 1982-09-06 | Soupape de vidange pour réservoir de chasse |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0074262A1 (fr) |
GB (1) | GB2106155A (fr) |
NO (1) | NO823039L (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6173457B1 (en) * | 1999-06-18 | 2001-01-16 | Gary R. Higgins | Flapper-type flush valve and mounting adapter |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955218A (en) * | 1975-04-07 | 1976-05-11 | Jerrold Craig Ramsey | Self-venting tank valve for toilet tanks |
GB1532491A (en) * | 1976-01-23 | 1978-11-15 | Schmidt A | Flapper flush valve |
US4189795A (en) * | 1978-09-20 | 1980-02-26 | Conti Angelo J | Toilet flush valve |
-
1981
- 1981-09-09 GB GB08127294A patent/GB2106155A/en not_active Withdrawn
-
1982
- 1982-09-06 EP EP82304660A patent/EP0074262A1/fr not_active Withdrawn
- 1982-09-08 NO NO823039A patent/NO823039L/no unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3955218A (en) * | 1975-04-07 | 1976-05-11 | Jerrold Craig Ramsey | Self-venting tank valve for toilet tanks |
GB1532491A (en) * | 1976-01-23 | 1978-11-15 | Schmidt A | Flapper flush valve |
US4189795A (en) * | 1978-09-20 | 1980-02-26 | Conti Angelo J | Toilet flush valve |
Also Published As
Publication number | Publication date |
---|---|
GB2106155A (en) | 1983-04-07 |
NO823039L (no) | 1983-03-10 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): AT BE CH DE FR IT LI LU NL SE |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19840301 |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: TROMAN, PHILIP Inventor name: BOLSHAW, ALAN DAVID |