EP0772755B1 - Plugs for radiators - Google Patents

Plugs for radiators Download PDF

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Publication number
EP0772755B1
EP0772755B1 EP95923500A EP95923500A EP0772755B1 EP 0772755 B1 EP0772755 B1 EP 0772755B1 EP 95923500 A EP95923500 A EP 95923500A EP 95923500 A EP95923500 A EP 95923500A EP 0772755 B1 EP0772755 B1 EP 0772755B1
Authority
EP
European Patent Office
Prior art keywords
plug
head portion
radiator
bleed valve
head
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
EP95923500A
Other languages
German (de)
French (fr)
Other versions
EP0772755A1 (en
Inventor
Douglas Charles Burton
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.)
ITW Ltd
Original Assignee
ITW Ltd
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
Application filed by ITW Ltd filed Critical ITW Ltd
Publication of EP0772755A1 publication Critical patent/EP0772755A1/en
Application granted granted Critical
Publication of EP0772755B1 publication Critical patent/EP0772755B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F9/00—Casings; Header boxes; Auxiliary supports for elements; Auxiliary members within casings
    • F28F9/26—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators
    • F28F9/262—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators
    • F28F9/266—Arrangements for connecting different sections of heat-exchange elements, e.g. of radiators for radiators by screw-type connections
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/02—Making other particular articles heat exchangers or parts thereof, e.g. radiators, condensers fins, headers
    • 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
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • 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
    • F24D19/00—Details
    • F24D19/0002—Means for connecting central heating radiators to circulation pipes
    • F24D19/0078—Plugs
    • 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
    • F24D19/00—Details
    • F24D19/08—Arrangements for drainage, venting or aerating
    • F24D19/082—Arrangements for drainage, venting or aerating for water heating systems
    • F24D19/083—Venting arrangements
    • F24D19/085—Arrangement of venting valves for central heating radiators
    • F24D19/086—Arrangement of venting valves for central heating radiators hand-operated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F2220/00—Closure means, e.g. end caps on header boxes or plugs on conduits

Definitions

  • a plug according to the invention is usable to blank off an aperture in a radiator, which aperture is not required for flow of water to or from the radiator. Such a plug may incorporate a bleed valve.
  • a plug for a radiator which is a pressing of sheet metal comprising a body portion of tubular configuration and a head portion, the plug being provided with a formation for receiving a sealing element to provide a fluid tight seal between the plug and radiator, characterised in that the formation comprises a radially outwardly extending annular flange, between the body and head portions of the plug, and an annular groove provided between the body and the annular flange.
  • the body portion may be provided on its external surface with a screw thread for engagement with a complementary screw thread provided in an aperture in a radiator, and the head portion may be adapted to be engaged by a driving tool for screwing the body portion of the plug into the aperture in the radiator.
  • the head portion of the plug has an external surface including opposed flat portions for torque-transmitting engagement by a spanner, for screwing the body portion of the plug into the aperture in the radiator.
  • the head portion is of square or hexagonal configuration to afford a number of such pairs of flat surface portions.
  • the flange affords an abutment surface which enables a sealing element such as an O-ring to be compressed between the flange and the surface of the radiator surrounding the aperture therein, to provide a seal.
  • the flange may include an inclined rim which provides a constraint against radial extrusion of a sealing element, for example an O-ring, compressed by the flange.
  • the plug is simply a closure plug, the head portion of the plug may be closed.
  • it is a plug having a bleed valve, it may include a tubular portion extending lengthwise of the plug through at least part of the body portion and/or the head portion thereof, for receiving a bleed valve member.
  • Such tubular portion may include an end portion having an aperture arranged to be closed by the tip of the bleed valve member.
  • a conventional bleed valve member is an externally threaded component with a conical tip and a head enabling the bleed valve member to be turned by a key; the tubular portion of the plug will then be provided with an internal screw-thread for engagement by the bleed valve member.
  • tubular portion of the plug for receiving the bleed valve member is inset lengthwise of the plug from the free end of the head portion of the plug, so that the head of a bleed valve does not protrude beyond the end of the plug.
  • a method of making a plug for a radiator comprising performing a plurality of pressing operations on a sheet metal blank, wherein the blank is a circular blank, and wherein the method includes a pressing operation or operations to form the blank into a generally cup-shaped component having a peripheral wall and an end wall, further pressing operation or operations to then form the end wall and an adjacent part of the peripheral wall to a head portion of the plug, characterised in that a part of the peripheral wall remote from the end wall is formed to a body portion of the plug, and further comprising forming a radially outwardly extending annular flange between the body and head portions of the plug, and providing an annular groove between the body and the annular flange.
  • the method comprises forming the head portion of the plug to a configuration cooperable with a driving tool, for example including opposed flat external surface portions for engagement by a spanner or the like, for screwing the body portion of the plug into an aperture in the radiator.
  • a driving tool for example including opposed flat external surface portions for engagement by a spanner or the like, for screwing the body portion of the plug into an aperture in the radiator.
  • the head portion may be formed to a square or hexagonal configuration to afford such flat surface portions.
  • the method further comprises forming a radially outwardly extending annular flange between the body and head portions of the plug, and may further comprise providing an inclined rim on the flange.
  • the method may further comprise the step of forming a tubular portion extending lengthwise of the plug through at least part of the head portion and/or body portion thereof, to receive the bleed valve.
  • a tubular portion is formed from an end wall portion of the head portion of the plug.
  • FIG. 1 a of the drawings shows a circular blank 10 of sheet metal which is the starting point for manufacture of a plug according to the invention.
  • the first operation carried out on the blank is a pressing or drawing operation, to produce a cup-shaped component with a cylindrical peripheral wall 11 and a flat end wall 12, as shown in Figure 1 b .
  • Figure 1 d The component of Figure 1 c . is then subjected to a further pressing operation to produce the component shown in Figure 1 d , which has a radially outwardly extending annular flange 14, constituted by a double thickness of the sheet metal, between the head portion 13 and a body portion 15 which is tubular and whose diameter is reduced compared with the previous diameter of the tubular wall 11.
  • a further pressing operation carried out on the component of Figure 1 d produces the component shown in Figure 1 e , in which the flange 14 has an inclined rim 16.
  • a final pressing operation shapes the component thus formed to the configuration shown in Figure 1 f .
  • the body portion 15 is radially expanded in a region 15 a remote from the flange 14 so that an annular groove 17 is defined adjacent the flange.
  • the expanded portion 15 a of the body portion of the plug is provided with an external screw-thread, e.g. by a subsequent thread rolling process, to enable it to be screwed into an aperture having a complementary internal thread in a radiator.
  • the annular groove 17 provides for reception of a sealing element such as an O-ring, which is compressed by the flange 14 against the surface of the radiator surrounding the aperture therein to provide a sealing action.
  • a sealing element such as an O-ring
  • Inclined rim 16 on flange 14 protects the O-ring and prevents radial extrusion thereof as it is compressed.
  • Figure 2 a shows a circular blank 30 of sheet metal which in a first pressing operation is formed into the cup-shaped component shown in Figure 2 b which has a cylindrical wall 31 and a closed end wall 32.
  • a further pressing operation deepens the cup-shaped component and reduces its diameter, to a configuration shown in Figure 2 c .
  • the next pressing operation is to provide the closed end 32 of the cup-shaped component with an inwardly extending, itself cup-shaped, recess 33 with a tubular lateral wall 34 and end wall 35, as shown in Figure 2 d .
  • a further operation on this component provides it with the configuration shown in Figure 2 e , wherein part of the wall 34 is elongated and reduced in diameter as shown at 36, whilst a remaining part of the wall 35 is formed into a reentrant configuration as indicated at 37 and pierced to provide it with a small diameter aperture 38.
  • the internal diameter of the wall portion 36 is suitable for tapping to form it with an internal screw-thread to be engaged by a bleed valve screw member whose tip is able to close the aperture 38.
  • a thread is then tapped in the wall portion 36 for the bleed valve member and a thread is then provided, for example, by a thread cutting or rolling operation on the wall portion 42.
  • the invention thus provides a plug for a radiator, which may be one receiving a bleed valve, which is made by pressing operations on sheet metal and thus is more economical than manufacture of such plugs by machining from a solid as has been known hitherto.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Chemical & Material Sciences (AREA)
  • Lift Valve (AREA)
  • Forging (AREA)
  • Cable Accessories (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Safety Valves (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Sliding Valves (AREA)

Abstract

A plug for a radiator which is a pressing of sheet metal, comprises an externally threaded (15a) tubular body portion for engagement with a complementary screw thread in an aperture in a radiator. A head portion (13, Figure 1e) is adapted to be engaged by a driving tool for screwing the body portion into the aperture in the radiator. The plug has a formation (14) for receiving a seal element comprising a radially outwardly extending annular flange which receives an O-ring in use. The plug may also comprise a tubular portion for receiving a bleed valve member - embodiment of figure 2i. <IMAGE>

Description

This invention relates to plugs intended primarily, and herein described with reference to their use, for heating radiators (although it will be appreciated that plugs according to the invention will be usable for other purposes). A plug according to the invention is usable to blank off an aperture in a radiator, which aperture is not required for flow of water to or from the radiator. Such a plug may incorporate a bleed valve.
Hitherto plugs for radiators, whether or not they incorporate bleed valves, have been made by machining from solid material. Such manufacture is expensive both in the manufacturing operations required and in the use of material. Forming a plug by pressing sheet metal is known from EP 0443995 A, but the plug formed by the method disclosed therein is inappropriate for securely receiving a sealing element.
According to one aspect of the present invention, we provide a plug for a radiator, which is a pressing of sheet metal comprising a body portion of tubular configuration and a head portion, the plug being provided with a formation for receiving a sealing element to provide a fluid tight seal between the plug and radiator, characterised in that the formation comprises a radially outwardly extending annular flange, between the body and head portions of the plug, and an annular groove provided between the body and the annular flange.
The body portion may be provided on its external surface with a screw thread for engagement with a complementary screw thread provided in an aperture in a radiator, and the head portion may be adapted to be engaged by a driving tool for screwing the body portion of the plug into the aperture in the radiator.
Preferably the head portion of the plug has an external surface including opposed flat portions for torque-transmitting engagement by a spanner, for screwing the body portion of the plug into the aperture in the radiator. Conveniently the head portion is of square or hexagonal configuration to afford a number of such pairs of flat surface portions.
The flange affords an abutment surface which enables a sealing element such as an O-ring to be compressed between the flange and the surface of the radiator surrounding the aperture therein, to provide a seal.
The flange may include an inclined rim which provides a constraint against radial extrusion of a sealing element, for example an O-ring, compressed by the flange.
If the plug is simply a closure plug, the head portion of the plug may be closed. If, on the other hand, it is a plug having a bleed valve, it may include a tubular portion extending lengthwise of the plug through at least part of the body portion and/or the head portion thereof, for receiving a bleed valve member. Such tubular portion may include an end portion having an aperture arranged to be closed by the tip of the bleed valve member. A conventional bleed valve member is an externally threaded component with a conical tip and a head enabling the bleed valve member to be turned by a key; the tubular portion of the plug will then be provided with an internal screw-thread for engagement by the bleed valve member.
Preferably said tubular portion of the plug for receiving the bleed valve member is inset lengthwise of the plug from the free end of the head portion of the plug, so that the head of a bleed valve does not protrude beyond the end of the plug.
According to another aspect of the invention, we provide a method of making a plug for a radiator, comprising performing a plurality of pressing operations on a sheet metal blank, wherein the blank is a circular blank, and wherein the method includes a pressing operation or operations to form the blank into a generally cup-shaped component having a peripheral wall and an end wall, further pressing operation or operations to then form the end wall and an adjacent part of the peripheral wall to a head portion of the plug, characterised in that a part of the peripheral wall remote from the end wall is formed to a body portion of the plug, and further comprising forming a radially outwardly extending annular flange between the body and head portions of the plug, and providing an annular groove between the body and the annular flange.
Preferably the method comprises forming the head portion of the plug to a configuration cooperable with a driving tool, for example including opposed flat external surface portions for engagement by a spanner or the like, for screwing the body portion of the plug into an aperture in the radiator. The head portion may be formed to a square or hexagonal configuration to afford such flat surface portions.
Preferably the method further comprises forming a radially outwardly extending annular flange between the body and head portions of the plug, and may further comprise providing an inclined rim on the flange.
If the plug is to receive a bleed valve, the method may further comprise the step of forming a tubular portion extending lengthwise of the plug through at least part of the head portion and/or body portion thereof, to receive the bleed valve. Preferably said tubular portion is formed from an end wall portion of the head portion of the plug.
These and other features of the invention will now be described by way of example with reference to the accompanying drawings, of which:-
  • Figure 1 shows successive stages in manufacture of a first embodiment of plug according to the invention;
  • Figure 2 shows successive stages in manufacture of a second embodiment of plug according to the invention.
    • Referring firstly to Figure 1a of the drawings, this shows a circular blank 10 of sheet metal which is the starting point for manufacture of a plug according to the invention. The first operation carried out on the blank is a pressing or drawing operation, to produce a cup-shaped component with a cylindrical peripheral wall 11 and a flat end wall 12, as shown in Figure 1b.
    The next operation to be carried out on this component is a further pressing or drawing operation, to produce the component shown in Figure 1c wherein the end wall 12 has been formed into what is to be the head portion 13 of the plug, with an hexagonal, square or other appropriate external shape for engagement with a driving tool such as a spanner.
    The component of Figure 1c. is then subjected to a further pressing operation to produce the component shown in Figure 1d, which has a radially outwardly extending annular flange 14, constituted by a double thickness of the sheet metal, between the head portion 13 and a body portion 15 which is tubular and whose diameter is reduced compared with the previous diameter of the tubular wall 11.
    A further pressing operation carried out on the component of Figure 1d produces the component shown in Figure 1e, in which the flange 14 has an inclined rim 16.
    A final pressing operation shapes the component thus formed to the configuration shown in Figure 1f. The body portion 15 is radially expanded in a region 15a remote from the flange 14 so that an annular groove 17 is defined adjacent the flange. The expanded portion 15a of the body portion of the plug is provided with an external screw-thread, e.g. by a subsequent thread rolling process, to enable it to be screwed into an aperture having a complementary internal thread in a radiator.
    The annular groove 17 provides for reception of a sealing element such as an O-ring, which is compressed by the flange 14 against the surface of the radiator surrounding the aperture therein to provide a sealing action. Inclined rim 16 on flange 14 protects the O-ring and prevents radial extrusion thereof as it is compressed.
    Referring now to Figure 2 of the drawings, this shows successive steps in the manufacture of a plug according to the invention which is adapted to receive a bleed valve.
    Figure 2a shows a circular blank 30 of sheet metal which in a first pressing operation is formed into the cup-shaped component shown in Figure 2b which has a cylindrical wall 31 and a closed end wall 32. A further pressing operation deepens the cup-shaped component and reduces its diameter, to a configuration shown in Figure 2c.
    The next pressing operation is to provide the closed end 32 of the cup-shaped component with an inwardly extending, itself cup-shaped, recess 33 with a tubular lateral wall 34 and end wall 35, as shown in Figure 2d. A further operation on this component provides it with the configuration shown in Figure 2e, wherein part of the wall 34 is elongated and reduced in diameter as shown at 36, whilst a remaining part of the wall 35 is formed into a reentrant configuration as indicated at 37 and pierced to provide it with a small diameter aperture 38.
    The internal diameter of the wall portion 36 is suitable for tapping to form it with an internal screw-thread to be engaged by a bleed valve screw member whose tip is able to close the aperture 38.
    The component shown in Figure 2e is now subjected to a further pressing operation which provides the component shown in Figure 2f. The wall 32 surrounding the recess 33 is displaced to provide a head portion 39 of square or hexagonal peripheral configuration.
    Further pressing operations are then carried out analogous to the pressing operations above described with reference to Figures 1d to if. Firstly a radially extending annular flange 40 is provided adjacent the head portion 39, as shown in Figure 2g. The flange 40 is provided with an inclined rim 41, as shown in Figure 2h. A body portion of the plug is then provided with an expanded wall portion 42 which is subsequently provided with a screw-thread, and which defines an annular recess 43 between it and the flange 40.
    A thread is then tapped in the wall portion 36 for the bleed valve member and a thread is then provided, for example, by a thread cutting or rolling operation on the wall portion 42.
    The invention thus provides a plug for a radiator, which may be one receiving a bleed valve, which is made by pressing operations on sheet metal and thus is more economical than manufacture of such plugs by machining from a solid as has been known hitherto.

    Claims (18)

    1. A plug for a radiator, which is a pressing of sheet metal comprising a body portion (15) of tubular configuration and a head portion (13), the plug being provided with a formation for receiving a sealing element to provide a fluid tight seal between the plug and radiator, characterised in that the formation comprises a radially outwardly extending annular flange (14), between the body and head portions (15, 13) of the plug, and an annular groove (17) provided between the body and the annular flange (14).
    2. A plug according to claim 1 wherein the body portion (15) is provided on its external surface with a screw thread for engagement with a complementary screw thread provided in an aperture in a radiator, and the head portion (13) is adapted to be engaged by a driving tool for screwing the body portion (15) of the plug into the aperture in the radiator.
    3. A plug according to claim 2 wherein the head portion (13) of the plug has an external surface including opposed flat portions for torque transmitting engagement by a spanner, for screwing the body portion (15) of the plug into the aperture in the radiator.
    4. A plug according to claim 3 wherein the head portion (13) is of square or hexagonal configuration to afford a number of such pairs of flat surface portions.
    5. A plug according to any one of the preceding claims wherein the flange (14) has an inclined rim (16) which provides a constraint against radial extrusion of a sealing element compressed by the flange (17).
    6. A plug according to any one of the preceding claims wherein the head portion (13) of the plug is closed.
    7. A plug according to any one of claims 1 to 5 wherein the head portion (13) of the plug includes a tubular portion (36) extending lengthwise of the plug through at least part of the body portion (15) and/or the head portion (13) thereof, for receiving a bleed valve member.
    8. A plug according to claim 7 wherein the tubular portion (36) includes an end portion (37) having an aperture (38) arranged to be closed by the tip of the bleed valve member.
    9. A plug according to claim 7 or claim 8 wherein the bleed valve member is an externally threaded component with a conical tip and a head enabling the bleed valve member to be turned by a key, and wherein the tubular portion (36) of the plug is provided with an internal screw thread for engagement by the bleed valve member.
    10. A plug according to any one of claims 7 to 9 wherein the tubular portion (36) of the plug for receiving the bleed valve member is inset lengthwise of the plug from the free end of the head portion (13) of the plug, so that the head of a bleed valve does not protrude beyond the end of the plug.
    11. A method of making a plug for a radiator, comprising performing a plurality of pressing operations on a sheet metal blank, wherein the blank is a circular blank (10), and wherein the method includes a pressing operation or operations to form the blank (10) into a generally cup-shaped component having a peripheral wall (11) and an end wall (12), further pressing operation or operations to then form the end wall (12) and an adjacent part of the peripheral wall (11) to a head portion (13) of the plug, characterised in that a part of the peripheral wall (11) remote from the end wall is formed to a body portion (15) of the plug, and further comprising forming a radially outwardly extending annular flange (14) between the body and head portions (15, 13) of the plug, and providing an annular groove (17) between the body and the annular flange (14).
    12. A method according to claim 11 comprising forming the head portion (13) of the plug to a configuration cooperable with a driving tool.
    13. A method according to Claim 12 wherein the configuration includes opposed flat external surface portions for engagement by a spanner or the like, for screwing the body portion (15) of the plug into an aperture in the radiator.
    14. A method according to claim 13 wherein the head portion (13) is formed to a square or hexagonal configuration to afford such flat surface portions.
    15. A method according to any one of claims 11 to 14 further comprising providing an inclined rim (16) on the flange (14).
    16. A method according to any one of claims 11 to 15 wherein the plug is to receive a bleed valve.
    17. A method according to claim 16 wherein the method further comprises the step of forming a tubular portion (36) extending lengthwise of the plug through at least part of the head portion (13) and/or body portion (15) thereof, to receive the bleed valve.
    18. A method according to claim 17 wherein the tubular portion (36) is formed from an end wall portion (32) of the head portion (13) of the plug.
    EP95923500A 1994-07-05 1995-07-05 Plugs for radiators Expired - Lifetime EP0772755B1 (en)

    Applications Claiming Priority (3)

    Application Number Priority Date Filing Date Title
    GB9413554 1994-07-05
    GB9413554A GB2292213B (en) 1994-07-05 1994-07-05 Plugs for radiators
    PCT/GB1995/001581 WO1996001399A1 (en) 1994-07-05 1995-07-05 Plugs for radiators

    Publications (2)

    Publication Number Publication Date
    EP0772755A1 EP0772755A1 (en) 1997-05-14
    EP0772755B1 true EP0772755B1 (en) 2000-03-15

    Family

    ID=10757858

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    EP95923500A Expired - Lifetime EP0772755B1 (en) 1994-07-05 1995-07-05 Plugs for radiators

    Country Status (6)

    Country Link
    EP (1) EP0772755B1 (en)
    AT (1) ATE190712T1 (en)
    CZ (1) CZ1297A3 (en)
    DE (1) DE69515670T2 (en)
    GB (1) GB2292213B (en)
    WO (1) WO1996001399A1 (en)

    Families Citing this family (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ITMI20061257A1 (en) * 2006-06-28 2007-12-29 Mecc Lan S R L CLOSING CAP FOR RADIATOR ELEMENTS

    Family Cites Families (2)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE2418119A1 (en) * 1974-04-13 1975-10-23 Gustav Weber Radiator vent plug mounted on eccentric connectors - plug formed from sheet metal allows air venting and complete emptying
    IT1245675B (en) * 1990-02-21 1994-10-11 Bruno Nicoletti METHOD FOR MAKING CAPS OR SEAL FITTINGS

    Also Published As

    Publication number Publication date
    CZ1297A3 (en) 1997-06-11
    GB2292213A (en) 1996-02-14
    GB2292213B (en) 1998-04-22
    DE69515670T2 (en) 2000-07-06
    DE69515670D1 (en) 2000-04-20
    WO1996001399A1 (en) 1996-01-18
    EP0772755A1 (en) 1997-05-14
    ATE190712T1 (en) 2000-04-15
    GB9413554D0 (en) 1994-08-24

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