EP1561999A2 - Sealing mechanism for diaphragm tank - Google Patents
Sealing mechanism for diaphragm tank Download PDFInfo
- Publication number
- EP1561999A2 EP1561999A2 EP05002435A EP05002435A EP1561999A2 EP 1561999 A2 EP1561999 A2 EP 1561999A2 EP 05002435 A EP05002435 A EP 05002435A EP 05002435 A EP05002435 A EP 05002435A EP 1561999 A2 EP1561999 A2 EP 1561999A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- liner
- passage fitting
- ring
- outer shell
- holder
- 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- Withdrawn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
- 238000007789 sealing Methods 0.000 title 1
- 238000004891 communication Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- -1 polypropylene Polymers 0.000 description 5
- 229920001903 high density polyethylene Polymers 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 229920001283 Polyalkylene terephthalate Polymers 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 235000012206 bottled water Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 238000009428 plumbing Methods 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
- F24D3/1016—Tanks having a bladder
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24D—DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS; ELEMENTS OR COMPONENTS THEREFOR
- F24D3/00—Hot-water central heating systems
- F24D3/10—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system
- F24D3/1008—Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks ; Hydraulic components of a central heating system expansion tanks
Definitions
- This invention pertains to improvements for diaphragm expansion tanks, and, more particularly, to a mechanism to better seal the bladder of an expansion tank.
- a diaphragm tank 12 for potable water typically has a metal shell 22 and a plastic liner 24 (Figure 1).
- a diaphragm 26 is mounted below the liner 24, defining an air cushion between the shell 22 and the diaphragm 26 and an expandable bladder enclosed by diaphragm 26 and liner 24.
- a gasket 28 is usually mounted around the hole between the shell 22 and the liner 24 to stiffen the metal shell 22 and plastic liner 24 in the area of the hole and to form an airtight seal to block the leakage of air (Figure 2).
- a connector 10 is mounted on diaphragm tank 12 to allow fluid to flow into or out of the tank (Figure 1).
- Connector 10 extends through both the shell 22 and the liner 24.
- a conventional connector includes a passage fitting 14 and an o-ring 16 mounted around the passage fitting 14 ( Figure 2).
- the interior end of the passage fitting 14 is bent into a curled end 18 to retain the o-ring 16 on the passage fitting 14.
- a shoulder 20 abuts the outside of the tank 12, allowing the wall of tank 12 to be clamped between the shoulder 20 and the curled end 18 of the passage fitting 14.
- the connector 10 links the tank to a water flow.
- water flows into the bladder.
- the pressurized air in the tank expands against the bladder, pushing the water out until the air pressure is the same as the water pressure or the tank is empty.
- the invention is a diaphragm tank.
- the tank comprises an outer shell, a flexible diaphragm, a liner sealingly connected to the flexible diaphragm to define a bladder and including an orifice and a raised portion surrounding the orifice that defines an annular groove, a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck, an o-ring disposed in the annular groove, an annular holder mounted on the passage fitting and having a groove and a gasket disposed between the liner and the outer shell.
- the annular holder is adapted to rest on the raised portion and retain the o-ring within the annular groove, and a portion of the neck is bent to retain the holder against the o-ring, thereby preventing fluidic communication between a space between the liner and the outer shell and the bladder along an outer wall of the passage fitting.
- the passage fitting may be disposed partially inside the outer shell and partially outside the outer shell and comprise a shoulder adapted to restrict motion of the passage fitting into diaphragm tank.
- the invention is a diaphragm tank.
- the diaphragm tank comprises an outer shell, a flexible diaphragm, a liner sealingly connected to the flexible diaphragm to define a bladder and including an orifice and a raised portion surrounding the orifice that defines a relief surface, a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck, an o-ring disposed on the relief surface, an annular holder mounted on the passage fitting and having a groove, and a gasket disposed between the liner and the outer shell,
- the annular holder is adapted to retain the o-ring on the relief surface, and a portion of the neck is bent to retain the holder against the O-ring, thereby preventing fluidic communication between a space between the liner and the outer shell and the bladder along an outer wall of the passage fitting.
- the invention is a liner for use with a diaphragm tank and a through-wall connector
- the through-wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove, wherein the liner has a raised portion defining an annular groove to receive the o-ring, and, when the neck is bent over the holder, the annular groove on the holder fits around the raised portion and the o-ring, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
- the invention is a liner for use with a diaphragm tank and a through-wall connector
- the through-wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove
- the liner has a raised portion having a relief surface on which the o-ring is disposed, and, when the neck is bent over the holder, the annular groove on the holder fits around the o-ring disposed on the relief surface of the passage fitting, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
- the invention includes a liner for a diaphragm tank.
- the liner 30 rests inside the outer shell 22 of a diaphragm tank (Figure 3A).
- the liner 30 includes a raised portion 32 that defines an annular groove.34.
- An o-ring 36 disposed in groove 34 provides a seal preventing fluidic communication between an expandable bladder defined by liner 30 and diaphragm 26 and the space between liner 30 and outer shell 22.
- groove 34 is omitted ( Figure 3B).
- raised portion 32 presents a relief surface 32a, e.g., a surface elevated with respect to the neighboring portion of liner 30, on which o-ring 36 rests.
- the raised portion 32 defines an annulus that accommodates passage fitting 40.
- Liner 30 is easily fabricated by injection molding, although alternative manufacturing techniques may be used. Exemplary materials for liner 30 include polypropylene, teflon, nylon, polyalkylene terephthalate, polyformaldehyde, polystyrene, poly(methyl methacrylate), polycarbonate, and poly(hexylisocyanate).
- An exemplary connector for use with an embodiment of the present invention comprises a passage fitting 40, an o-ring 42 and an annular holder 44 (Figure 4).
- the passage fitting 40 extends through the outer shell 22 and liner 30 of the diaphragm tank.
- Passage fitting 40 may include a thread 46 that extends out from the tank to connect with a hose, pipe or other plumbing.
- the thread may also be tapped on the interior of passage fitting 40, or two threads may be included to provide flexibility in installation.
- the other end of passage fitting 40 defmes a neck 48 having an outer diameter smaller than the remainder of passage fitting 40.
- a shoulder 50 at the inside extent of the thread 46 abuts the outer shell 22 of the diaphragm tank.
- a concave annular groove 52 in the holder 44 retains o-ring 42 in groove 34. To promote a watertight seal, the depth of groove 34 is less than the thickness of the o-ring 42.
- the neck 48 of passage fitting 40 is first inserted through the hole defined by the outer shell 22, gasket 28 and liner 30.
- O-ring 42 and holder 44 are sequentially mounted on neck 48.
- Neck 48 is then bent around holder 44.
- the bent neck 48 presses against the holder 44 to firmly retain the holder 44 in place.
- the shell 22, gasket 28 and liner 30 are tightly clamped between shoulder 50 of passage fitting 40 and holder 44.
- the o-ring 42 will be deformed to expand against the outside of passage fitting 40 as it is squeezed between the holder 44 and the liner 30, providing a watertight seal. This forms a watertight seal at the, junction of the liner 30 and passage fitting 40,
- liner 30 will be squeezed by the holder 44 to fully engage gasket 28, preventing leakage around the gasket.
Abstract
Description
- This application is a continuation of and claims the priority of U.S. Patent Application No. 10/773,985, filed February 6, 2004, the entire contents of which are incorporated by reference herein.
- This invention pertains to improvements for diaphragm expansion tanks, and, more particularly, to a mechanism to better seal the bladder of an expansion tank.
- A diaphragm tank 12 for potable water typically has a
metal shell 22 and a plastic liner 24 (Figure 1). Adiaphragm 26 is mounted below theliner 24, defining an air cushion between theshell 22 and thediaphragm 26 and an expandable bladder enclosed bydiaphragm 26 andliner 24. Agasket 28 is usually mounted around the hole between theshell 22 and theliner 24 to stiffen themetal shell 22 andplastic liner 24 in the area of the hole and to form an airtight seal to block the leakage of air (Figure 2). - A
connector 10 is mounted on diaphragm tank 12 to allow fluid to flow into or out of the tank (Figure 1).Connector 10 extends through both theshell 22 and theliner 24. A conventional connector includes a passage fitting 14 and an o-ring 16 mounted around the passage fitting 14 (Figure 2). The interior end of the passage fitting 14 is bent into acurled end 18 to retain the o-ring 16 on the passage fitting 14. Ashoulder 20 abuts the outside of the tank 12, allowing the wall of tank 12 to be clamped between theshoulder 20 and thecurled end 18 of the passage fitting 14. - The
connector 10 links the tank to a water flow. When the pressure of the flowing water is greater than that of the air cushion, water flows into the bladder. When the water pressure decreases, the pressurized air in the tank expands against the bladder, pushing the water out until the air pressure is the same as the water pressure or the tank is empty. - As shown in Figure 2, a large force is required to press the
curled end 18 around o-ring 16, and curledend 18 will easily be cracked. This reduces the pressure on o-ring 16, reducing its ability to seal the connector and reducing the strength of the passage fitting. In addition, the diameter of the contact area between thecurled end 18 of the passage fitting 14 and theliner 24 is only slightly larger than the diameter of the hole, allowing a gap to form betweenliner 24 andgasket 28. This allows air from the tank 12 to enter the water resident in the space betweenliner 24 anddiaphragm 26. Because the air in the tank does not circulate, it may contain harmful bacteria and other microorganisms that could cause disease if air retained in the tank was allowed to mix with the water passing in and out of the bladder. As a result, it is desirable to have a more robust seal between the connector and the remainder of the tank. - In one aspect, the invention is a diaphragm tank. The tank comprises an outer shell, a flexible diaphragm, a liner sealingly connected to the flexible diaphragm to define a bladder and including an orifice and a raised portion surrounding the orifice that defines an annular groove, a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck, an o-ring disposed in the annular groove, an annular holder mounted on the passage fitting and having a groove and a gasket disposed between the liner and the outer shell. The annular holder is adapted to rest on the raised portion and retain the o-ring within the annular groove, and a portion of the neck is bent to retain the holder against the o-ring, thereby preventing fluidic communication between a space between the liner and the outer shell and the bladder along an outer wall of the passage fitting. The passage fitting may be disposed partially inside the outer shell and partially outside the outer shell and comprise a shoulder adapted to restrict motion of the passage fitting into diaphragm tank.
- In another aspect, the invention is a diaphragm tank. The diaphragm tank comprises an outer shell, a flexible diaphragm, a liner sealingly connected to the flexible diaphragm to define a bladder and including an orifice and a raised portion surrounding the orifice that defines a relief surface, a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck, an o-ring disposed on the relief surface, an annular holder mounted on the passage fitting and having a groove, and a gasket disposed between the liner and the outer shell, The annular holder is adapted to retain the o-ring on the relief surface, and a portion of the neck is bent to retain the holder against the O-ring, thereby preventing fluidic communication between a space between the liner and the outer shell and the bladder along an outer wall of the passage fitting.
- In another aspect, the invention is a liner for use with a diaphragm tank and a through-wall connector, the through-wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove, wherein the liner has a raised portion defining an annular groove to receive the o-ring, and, when the neck is bent over the holder, the annular groove on the holder fits around the raised portion and the o-ring, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
- In another aspect, the invention is a liner for use with a diaphragm tank and a through-wall connector, the through-wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove, wherein the liner has a raised portion having a relief surface on which the o-ring is disposed, and, when the neck is bent over the holder, the annular groove on the holder fits around the o-ring disposed on the relief surface of the passage fitting, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
- The invention is described with reference to the several figures of the drawing, in which,
- Figure 1 is a schematic view of a diaphragm tank with a conventional connector;
- Figure 2 is a cross-sectional view of the connector depicted in Figure 1;
- Figure 3A is a partial cross-sectional view of a connector and tank according to an embodiment of the invention;
- Figure 3B is a partial cross-sectional view of a connector and tank according to an alternative embodiment of the invention from that depicted in Figure 3A; and
- Figure 4 is an exploded prospective view of a liner according to an embodiment of the invention and a connector for use therewith.
-
- The invention includes a liner for a diaphragm tank. In one embodiment, the
liner 30 rests inside theouter shell 22 of a diaphragm tank (Figure 3A). Theliner 30 includes a raisedportion 32 that defines an annular groove.34. An o-ring 36 disposed ingroove 34 provides a seal preventing fluidic communication between an expandable bladder defined byliner 30 anddiaphragm 26 and the space betweenliner 30 andouter shell 22. In an alternative embodiment,groove 34 is omitted (Figure 3B). Rather, raisedportion 32 presents a relief surface 32a, e.g., a surface elevated with respect to the neighboring portion ofliner 30, on which o-ring 36 rests. The raisedportion 32 defines an annulus that accommodates passage fitting 40. - The construction of diaphragm tanks is well known to those skilled in the art. Liner 30 is easily fabricated by injection molding, although alternative manufacturing techniques may be used. Exemplary materials for
liner 30 include polypropylene, teflon, nylon, polyalkylene terephthalate, polyformaldehyde, polystyrene, poly(methyl methacrylate), polycarbonate, and poly(hexylisocyanate). - An exemplary connector for use with an embodiment of the present invention comprises a passage fitting 40, an o-
ring 42 and an annular holder 44 (Figure 4). The passage fitting 40 extends through theouter shell 22 andliner 30 of the diaphragm tank. Passage fitting 40 may include athread 46 that extends out from the tank to connect with a hose, pipe or other plumbing. One skilled in the art will recognize that the thread may also be tapped on the interior of passage fitting 40, or two threads may be included to provide flexibility in installation. The other end of passage fitting 40 defmes aneck 48 having an outer diameter smaller than the remainder of passage fitting 40. Ashoulder 50 at the inside extent of thethread 46 abuts theouter shell 22 of the diaphragm tank. A concaveannular groove 52 in theholder 44 retains o-ring 42 ingroove 34. To promote a watertight seal, the depth ofgroove 34 is less than the thickness of the o-ring 42. - To install the connector in the wall of a diaphragm tank, the
neck 48 of passage fitting 40 is first inserted through the hole defined by theouter shell 22,gasket 28 andliner 30. O-ring 42 andholder 44 are sequentially mounted onneck 48.Neck 48 is then bent aroundholder 44. Thebent neck 48 presses against theholder 44 to firmly retain theholder 44 in place. Theshell 22,gasket 28 andliner 30 are tightly clamped betweenshoulder 50 of passage fitting 40 and holder 44. In addition, because the depth of thegroove 34 is less than the thickness of the o-ring 42, the o-ring 42 will be deformed to expand against the outside of passage fitting 40 as it is squeezed between theholder 44 and theliner 30, providing a watertight seal. This forms a watertight seal at the, junction of theliner 30 and passage fitting 40, In addition,liner 30 will be squeezed by theholder 44 to fully engagegasket 28, preventing leakage around the gasket. - Other embodiments of the invention will be apparent to those skilled in the art from a consideration of the specification or practice of the invention disclosed herein. It is intended that the specification and examples be considered as exemplary only, with the true scope and spirit of the invention being indicated by the following claims.
Claims (6)
- A diaphragm tank, comprising:an outer shell;a flexible diaphragm;a liner sealingly connected to the flexible diaphragm to define a bladder, the liner including an orifice and a raised portion surrounding the orifice defining an annular groove;a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck;an o-ring disposed in the annular groove;an annular holder mounted on the passage fitting and having a groove, the annular holder adapted to rest on the raised portion and retain the o-ring within the annular groove; anda gasket disposed between the liner and the outer shell;
- The diaphragm tank of claim 1, wherein the passage fitting is disposed partially inside the outer shell and partially outside the outer shell and comprises a shoulder adapted to restrict motion of the passage fitting into diaphragm tank.
- A diaphragm tank, comprising:an outer shell;a flexible diaphragm;a liner sealingly connected to the flexible diaphragm to define a bladder, the liner including an orifice and a raised portion surrounding the orifice defining a relief surface;a passage fitting providing fluidic communication between an exterior of the outer shell and the bladder and having a neck;an o-ring disposed on the relief surface;an annular holder mounted on the passage fitting and having a groove, the annular holder adapted to retain the o-ring on the relief surface; anda gasket disposed between the liner and the outer shell;
- The diaphragm tank of claim 3, wherein the passage fitting is disposed partially inside the outer shell and partially outside the outer shell and comprises a shoulder adapted to restrict motion of the passage fitting into diaphragm tank.
- A liner for use with a diaphragm tank and a through-wall connector, the through wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove, wherein:the liner has a raised portion defining an annular groove to receive the o-ring, and, when the neck is bent over the holder, the annular groove on the holder fits around the raised portion and the o-ring, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
- A liner for use with a diaphragm tank and a through-wall connector, the through wall connector comprising a passage fitting having a neck and adapted to extend into the diaphragm tank, an o-ring mounted on the passage fitting, an annular holder mounted on the passage fitting and having an annular groove, wherein:the liner has a raised portion having a relief surface on which the o-ring is disposed, and, when the neck is bent over the holder, the annular groove on the holder fits around the o-ring disposed on the relief surface of the passage fitting, thereby preventing fluidic communication from an exterior side of the liner to an interior side of the liner along an outer surface of the passage fitting.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/773,985 US20080128439A1 (en) | 2004-02-06 | 2004-02-06 | Sealing mechanism for diaphragm tank |
US773985 | 2004-02-06 | ||
US11/006,402 US7363944B2 (en) | 2004-02-06 | 2004-12-06 | Sealing mechanism for diaphragm tank |
US6402 | 2004-12-06 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1561999A2 true EP1561999A2 (en) | 2005-08-10 |
EP1561999A3 EP1561999A3 (en) | 2006-05-03 |
Family
ID=34680823
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05002435A Withdrawn EP1561999A3 (en) | 2004-02-06 | 2005-02-04 | Sealing mechanism for diaphragm tank |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP1561999A3 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008141374A1 (en) * | 2007-05-18 | 2008-11-27 | Bluescope Steel Limited | Fittings for water storage tank |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232318A (en) * | 1961-12-29 | 1966-02-01 | Mercier Jean | Mounting means for bladder of pressure vessel |
US3379216A (en) * | 1964-11-16 | 1968-04-23 | Mercier Olaer Patent Corp | Pressure vessel |
GB1161321A (en) * | 1966-07-20 | 1969-08-13 | Greer Hydraulics Inc | Improvements in Pressure Vessels |
CH665884A5 (en) * | 1984-10-31 | 1988-06-15 | Stuecklin & Cie Ag | Expansion-accommodating pressure vessel for liq. - has inner container of flexible material filed with gas |
DE9213285U1 (en) * | 1991-10-02 | 1993-01-21 | Varem S.P.A., Bovolenta, It | |
DE10230742A1 (en) * | 2002-07-09 | 2004-01-29 | Hydac Technology Gmbh | Hydraulic accumulators, especially bladder accumulators |
-
2005
- 2005-02-04 EP EP05002435A patent/EP1561999A3/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232318A (en) * | 1961-12-29 | 1966-02-01 | Mercier Jean | Mounting means for bladder of pressure vessel |
US3379216A (en) * | 1964-11-16 | 1968-04-23 | Mercier Olaer Patent Corp | Pressure vessel |
GB1161321A (en) * | 1966-07-20 | 1969-08-13 | Greer Hydraulics Inc | Improvements in Pressure Vessels |
CH665884A5 (en) * | 1984-10-31 | 1988-06-15 | Stuecklin & Cie Ag | Expansion-accommodating pressure vessel for liq. - has inner container of flexible material filed with gas |
DE9213285U1 (en) * | 1991-10-02 | 1993-01-21 | Varem S.P.A., Bovolenta, It | |
DE10230742A1 (en) * | 2002-07-09 | 2004-01-29 | Hydac Technology Gmbh | Hydraulic accumulators, especially bladder accumulators |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008141374A1 (en) * | 2007-05-18 | 2008-11-27 | Bluescope Steel Limited | Fittings for water storage tank |
Also Published As
Publication number | Publication date |
---|---|
EP1561999A3 (en) | 2006-05-03 |
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