WO1998021534A1 - Improved gasket - Google Patents
Improved gasket Download PDFInfo
- Publication number
- WO1998021534A1 WO1998021534A1 PCT/GB1997/003009 GB9703009W WO9821534A1 WO 1998021534 A1 WO1998021534 A1 WO 1998021534A1 GB 9703009 W GB9703009 W GB 9703009W WO 9821534 A1 WO9821534 A1 WO 9821534A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- seal
- door
- gasket
- manufactured
- lip
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
- E05C19/00—Other devices specially designed for securing wings, e.g. with suction cups
- E05C19/16—Devices holding the wing by magnetic or electromagnetic attraction
- E05C19/161—Devices holding the wing by magnetic or electromagnetic attraction magnetic gaskets
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25D—REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT OTHERWISE PROVIDED FOR
- F25D23/00—General constructional features
- F25D23/08—Parts formed wholly or mainly of plastics materials
- F25D23/082—Strips
- F25D23/087—Sealing strips
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/26—Sealing devices, e.g. packaging for pistons or pipe joints
Definitions
- the present invention relates to gaskets and in particular, though not exclusively, to a gasket used to provide a hermetic seal between a door or such like and the main body of a refrigeration apparatus such as a refrigeration (fridge) , freezer, fridge-freezer and drinks cooler (chiller) or the like.
- a refrigeration apparatus such as a refrigeration (fridge) , freezer, fridge-freezer and drinks cooler (chiller) or the like.
- door is used to identify a door, hatch, lid cover or other such member which may be openable to permit access to the interior of a refrigeration apparatus .
- an elastically deformable gasket or sealing member In order to facilitate a hermetic seal between a door and a main body of a refrigeration apparatus there is normally provided an elastically deformable gasket or sealing member. Such gaskets are necessary to seek to maintain a chosen temperature within the refrigeration apparatus and to seek to prevent ingress of undesirable matter such as airborne particles.
- Conventional gaskets are manufactured from individual lengths of extruded plastics material which are assembled to provide the required gasket size and shape. This often requires the formation of mitred joints. Once assembled the gasket is normally held between a frame and an inner panel of the door.
- Assembly of the gasket involves the joining of individual extrusions to one another by the use of adhesives or by plastic welding techniques. Such assembly is time and labour intensive and can result in irregularities in the finished gasket, especially at the interface of two or more individual extrusions. Such irregularities may, in use, reduce the efficiency of the gasket or harbour bacteria.
- refrigeration equipment one is faced with a temperature differential, ie, in use the inside is colder than the outside. Hence the expansion of inside surfaces is less than that of the outside surfaces. This can cause distortion and/or bending on the lid or door.
- a seal comprising a gasket, at least a portion of said gasket being elastically deformable, wherein the gasket comprises an opening to allow for the introduction of an insulation material into the gasket, said seal being manufactured by injection moulding.
- the seal is adapted for use in a refrigeration apparatus.
- the seal is adapted for attachment to a door lid of a refrigeration apparatus.
- the seal may be manufactured as a single piece moulding.
- the seal may be manufactured from a number of injection moulded strips joined so as to provide the desired seal configuration.
- the seal may be manufactured from a resilient plastics material.
- the seal may be provided with magnetic means to enhance its sealing properties.
- the magnetic means may comprise one or more flexible magnetic strips provided on or within the seal.
- the seal may comprise an outer face, an inner face, an outer leg and an inner leg, and may preferably be substantially "M" shaped in cross-section.
- One of the legs preferably the outer leg, may be provided with a lip in order that the seal may be retained upon a door of the apparatus.
- the lip may comprise a plurality of spaced lip portions (return legs) .
- the inner leg may also be provided with a lip.
- a door incorporating a seal according to the first aspect of the present invention.
- the door may be fitted to any apparatus to which access to an interior cavity may be required and within which a controllable stable temperature may be maintained.
- apparatus may comprise refrigeration apparatus such as a refrigerator (fridge), freezer, fridge- freezer or drinks cooler (chiller) .
- an apparatus within which a controllable stable temperature may be maintained comprising a cabinet, (carton, chest, container, trunk or like body) and at least one openably closable door, wherein the apparatus includes a seal according to the first aspect of the present invention to provide a seal between the door and cabinet.
- a method of manufacturing at least a portion of a seal comprising the steps of: providing a first mould;
- first and second moulds are male and female moulds, respectively, coacting one with another.
- the seal is adapted for use with a refrigeration apparatus.
- the seal may be manufactured as a single piece moulding or alternatively may be assembled from a plurality of individual seal portions.
- Fig 1 a cross-sectional representation of a door incorporating a prior art seal
- FIG. 1 a cross-sectional representation of a door incorporating a seal in accordance with an embodiment of the present invention
- Fig 3 a plan view of the seal of Fig 2;
- Fig 4a-4c plan, underside and longitudinal sectional views of a portion of the seal of Fig 2;
- Fig 5 an enlarged cross-sectional view of the seal of Fig 2 in accordance with an aspect of the present invention
- Fig 6 a perspective view from the front and to one side of a chest freezer employing and seal of Fig 2;
- Fig 7 a side-view of injection moulding apparatus in an open position capable of manufacturing the seal of Fig 2;
- Fig 8 a side-view of the injection moulding apparatus of Fig 7 in a closed position.
- Fig 1 there is shown a cross- sectional representation of a door 5 comprising part of a refrigeration apparatus.
- the door 5 comprises a frame member 10, an inner panel 15, an outer panel 20, and a seal 25.
- the space 30 defined between the inner panel 15 and the frame member 10 is filled with a thermal insulation material such as foamed polyurethane .
- the seal 25 is provided with a lip 35 which allows the seal to be retained between the frame member 10 and the inner panel 15.
- the seal 25 extends in a continuous "loop" around the perimeter of an inner surface of the door 5 and, once the door 5 is closed, provides a hermetic seal between the door 5 and a facing perimeter surface of a cabinet of the apparatus to which the door 5 is attached.
- a seal 25' in accordance with an embodiment of the present invention.
- the seal 25' comprises an inner surface 40', an outer surface 45' , an inner leg 50' and an outer leg 55' .
- the outer leg 55' is further provided with a lip 60' to permit the seal 25' to be retained between the frame 10' and an inner panel 15' of a door 5', while the inner leg 50' is also provided with a lip 65' .
- the seal 25' is substantially "M” shaped in cross- section with a longitudinally extending central depression 70' on an upper portion of the outer surface 45' , and a central, longitudinally extending spine 75' on an upper portion of the inner surface 40' .
- the lip 60' further comprises a plurality of spaced lip portions 61' .
- the "open" design of the seal 25' allows the seal 25' to be manufactured by an injection moulding process wherein injection points 62' are provided along the spine 75'.
- the "open" design of the seal allows the inner panel 15' to be formed with a longitudinal channel 80' , for example by a vacuum forming process.
- the longitudinal channel extends into the seal between the inner and outer legs 50' 55' .
- This allows for the introduction of solid insulation such as foamed polyurethane to be introduced not only into the space 30' defined between the inner panel 15' and the outer panel 20' but also into the gasket 45' thereby increasing the amount of insulation provided and improving the overall thermal efficiency of the seal or the cabinet.
- An advantage of the injection moulding process is that complete seals 25', as shown in Fig 3, may be made and this eliminates the need to join together a plurality of seal elements.
- the spaced lip portions 61' allow for the provision of spaced injection mounting points 62'.
- a chest freezer unit 110' comprising a main body 115' and a hinged lid 120' .
- a seal 25' according to an aspect of the present invention is provided between the lid 120' and the main body 115' and thus provides a hermetic seal between the lid 120' and main body 115' .
- a mould 80' for the production of seals 25' in accordance with the present invention by an injection moulding process comprises an upper female mould member 85' and a lower male mould member 90' with a cavity 95' corresponding to the shape of the seal 25' defined therebetween.
- Injection ports 100' are provided in the lower mould member 90' .
- the seal 25' may be optionally provided with one or more flexible magnetic strips 76'. Such strips may be integrally moulded into the seal 35' and may be provided at or near the outer surface 45' of the seal 25' . The strips may serve to enhance the sealing properties of the seal 25' by magnetically attaching the seal 25' to a surface facing the seal 25' .
- a beneficial feature of one or more embodiments of the gasket of the present invention is that such a gasket can be made to compensate for temperature differentials between inside and outside a refrigeration apparatus. Prior art gaskets made by extrusion could not be so made.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU48742/97A AU4874297A (en) | 1996-11-09 | 1997-11-10 | Improved gasket |
EP97911327A EP0948729A1 (en) | 1996-11-09 | 1997-11-10 | Improved gasket |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9623378.8 | 1996-11-09 | ||
GBGB9623378.8A GB9623378D0 (en) | 1996-11-09 | 1996-11-09 | Improved gasket |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998021534A1 true WO1998021534A1 (en) | 1998-05-22 |
Family
ID=10802722
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1997/003009 WO1998021534A1 (en) | 1996-11-09 | 1997-11-10 | Improved gasket |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0948729A1 (en) |
AU (1) | AU4874297A (en) |
GB (1) | GB9623378D0 (en) |
WO (1) | WO1998021534A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7380323B2 (en) | 2006-02-16 | 2008-06-03 | Air Products And Chemicals, Inc. | Seal installation tool |
US10766672B2 (en) | 2018-12-12 | 2020-09-08 | Yeti Coolers, Llc | Insulating container |
USD965409S1 (en) | 2018-12-12 | 2022-10-04 | Yeti Coolers, Llc | Latch portion |
US11970313B2 (en) | 2022-05-12 | 2024-04-30 | Yeti Coolers, Llc | Insulating container |
Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734239A (en) * | 1956-02-14 | Hollow resilient strip for sealing | ||
DE1138337B (en) * | 1959-11-16 | 1962-10-18 | Siemens Elektrogeraete Gmbh | Magnetic lock for household appliances |
FR1350147A (en) * | 1962-12-14 | 1964-01-24 | Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-Colombes | Seal |
US3184807A (en) * | 1958-11-24 | 1965-05-25 | Goodrich Co B F | Gasket containing a permanent magnet |
GB1017159A (en) * | 1963-06-27 | 1966-01-19 | Parkinson Cowan Appliances Ltd | Sealing strips for doors |
GB1127308A (en) * | 1966-02-16 | 1968-09-18 | Albans Rubber Company Ltd | Improvements in or relating to sealing strips |
AU422903B2 (en) * | 1968-08-08 | 1972-04-04 | Malleys Limited | Refrigerator door gasket |
DE2105086A1 (en) * | 1971-02-04 | 1972-08-10 | Goetzewerke | Seal ring mould - with lip mould connected to remaining mould cavity |
US3862515A (en) * | 1973-03-13 | 1975-01-28 | Max Baermann | Permanent magnet sealing and closure member |
WO1984003659A1 (en) * | 1983-03-18 | 1984-09-27 | Simpson Ltd | Gasket |
EP0628439A1 (en) * | 1993-06-09 | 1994-12-14 | Gencorp Inc. | Seal assembly for movable window for a vehicle |
EP0657574A1 (en) * | 1993-12-07 | 1995-06-14 | N.V. MEDIBEG S.A., naamloze vennootschap. | Elastic sealing ring for washing and drying machines and similar machines and a machine provided with such a sealing ring |
-
1996
- 1996-11-09 GB GBGB9623378.8A patent/GB9623378D0/en active Pending
-
1997
- 1997-11-10 AU AU48742/97A patent/AU4874297A/en not_active Abandoned
- 1997-11-10 EP EP97911327A patent/EP0948729A1/en not_active Withdrawn
- 1997-11-10 WO PCT/GB1997/003009 patent/WO1998021534A1/en not_active Application Discontinuation
Patent Citations (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2734239A (en) * | 1956-02-14 | Hollow resilient strip for sealing | ||
US3184807A (en) * | 1958-11-24 | 1965-05-25 | Goodrich Co B F | Gasket containing a permanent magnet |
DE1138337B (en) * | 1959-11-16 | 1962-10-18 | Siemens Elektrogeraete Gmbh | Magnetic lock for household appliances |
FR1350147A (en) * | 1962-12-14 | 1964-01-24 | Pneumatiques, Caoutchouc Manufacture Et Plastiques Kleber-Colombes | Seal |
GB1017159A (en) * | 1963-06-27 | 1966-01-19 | Parkinson Cowan Appliances Ltd | Sealing strips for doors |
GB1127308A (en) * | 1966-02-16 | 1968-09-18 | Albans Rubber Company Ltd | Improvements in or relating to sealing strips |
AU422903B2 (en) * | 1968-08-08 | 1972-04-04 | Malleys Limited | Refrigerator door gasket |
DE2105086A1 (en) * | 1971-02-04 | 1972-08-10 | Goetzewerke | Seal ring mould - with lip mould connected to remaining mould cavity |
US3862515A (en) * | 1973-03-13 | 1975-01-28 | Max Baermann | Permanent magnet sealing and closure member |
WO1984003659A1 (en) * | 1983-03-18 | 1984-09-27 | Simpson Ltd | Gasket |
EP0628439A1 (en) * | 1993-06-09 | 1994-12-14 | Gencorp Inc. | Seal assembly for movable window for a vehicle |
EP0657574A1 (en) * | 1993-12-07 | 1995-06-14 | N.V. MEDIBEG S.A., naamloze vennootschap. | Elastic sealing ring for washing and drying machines and similar machines and a machine provided with such a sealing ring |
Cited By (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7380323B2 (en) | 2006-02-16 | 2008-06-03 | Air Products And Chemicals, Inc. | Seal installation tool |
US10766672B2 (en) | 2018-12-12 | 2020-09-08 | Yeti Coolers, Llc | Insulating container |
USD899867S1 (en) | 2018-12-12 | 2020-10-27 | Yeti Coolers, Llc | Container |
USD899868S1 (en) | 2018-12-12 | 2020-10-27 | Yeti Coolers, Llc | Container |
USD899869S1 (en) | 2018-12-12 | 2020-10-27 | Yeti Coolers, Llc | Container |
USD899866S1 (en) | 2018-12-12 | 2020-10-27 | Yeti Coolers, Llc | Container |
USD922176S1 (en) | 2018-12-12 | 2021-06-15 | Yeti Coolers, Llc | Latch |
USD925296S1 (en) | 2018-12-12 | 2021-07-20 | Yeti Coolers, Llc | Container |
USD925298S1 (en) | 2018-12-12 | 2021-07-20 | Yeti Coolers, Llc | Container |
USD925297S1 (en) | 2018-12-12 | 2021-07-20 | Yeti Coolers, Llc | Container |
USD925295S1 (en) | 2018-12-12 | 2021-07-20 | Yeti Coolers, Llc | Container |
US11180291B2 (en) | 2018-12-12 | 2021-11-23 | Yeti Coolers, Llc | Insulating container |
USD942219S1 (en) | 2018-12-12 | 2022-02-01 | Yeti Coolers, Llc | Container |
USD942220S1 (en) | 2018-12-12 | 2022-02-01 | Yeti Coolers, Llc | Container |
USD959918S1 (en) | 2018-12-12 | 2022-08-09 | Yeti Coolers, Llc | Container |
USD965409S1 (en) | 2018-12-12 | 2022-10-04 | Yeti Coolers, Llc | Latch portion |
US11623796B2 (en) | 2018-12-12 | 2023-04-11 | Yeti Coolers, Llc | Insulating container |
USD997650S1 (en) | 2018-12-12 | 2023-09-05 | Yeti Coolers, Llc | Container |
US11970313B2 (en) | 2022-05-12 | 2024-04-30 | Yeti Coolers, Llc | Insulating container |
Also Published As
Publication number | Publication date |
---|---|
EP0948729A1 (en) | 1999-10-13 |
GB9623378D0 (en) | 1997-01-08 |
AU4874297A (en) | 1998-06-03 |
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