WO2000042890A1 - Recipient a confectionner des breuvages - Google Patents

Recipient a confectionner des breuvages Download PDF

Info

Publication number
WO2000042890A1
WO2000042890A1 PCT/GB2000/000113 GB0000113W WO0042890A1 WO 2000042890 A1 WO2000042890 A1 WO 2000042890A1 GB 0000113 W GB0000113 W GB 0000113W WO 0042890 A1 WO0042890 A1 WO 0042890A1
Authority
WO
WIPO (PCT)
Prior art keywords
disc
chamber
beverage
closed end
raw material
Prior art date
Application number
PCT/GB2000/000113
Other languages
English (en)
Inventor
Thomas Robinson
Original Assignee
Windmill Holdings Limited
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 Windmill Holdings Limited filed Critical Windmill Holdings Limited
Publication of WO2000042890A1 publication Critical patent/WO2000042890A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
    • A47J31/00—Apparatus for making beverages
    • A47J31/18—Apparatus in which ground coffee or tea-leaves are immersed in the hot liquid in the beverage container
    • A47J31/20—Apparatus in which ground coffee or tea-leaves are immersed in the hot liquid in the beverage container having immersible, e.g. rotatable, filters

Definitions

  • This invention relates to a beverage maker which includes a chamber having a closed end, a pouring spout spaced from the closed end and a separator piston disc which is provided with a seal around its periphery and which is slidable within the chamber between the pouring spout and the closed end, the separator piston disc being permeable to water and the beverage whilst being impenetrable to solid raw material from which the beverage is made and being adapted to be driven towards the closed end of the chamber, the seal being operably co-operative with the sides of the chamber so as to seal against passage of the raw material between the disc and the sides of the chamber from below the disc, the arrangement being such that the solid raw material is placed in the chamber between the closed end and the separator piston disc and the chamber is filled with hot water which interacts with raw material to form the beverage, the separator piston disc being driven towards the closed end to separate the residue of the raw material from the resultant beverage.
  • a beverage maker is referred in the rest of this description as "a beverage maker of the kind
  • a coffee maker comprising an open-topped vessel having a base and substantially straight sides upstanding from the periphery of the base and forming a pouring spout, a lid for fitting to the open-top whereby to enclose the interior of the vessel, a separator piston disc having a plan form profile similar to that of the base and formed so as to be permeable to liquid but impenetrable to coffee grains, manually operable means for driving the disc downwards within the vessel to separate the residue of the coffee grains from the liquid, the disc being provided with a seal around its periphery, the seal being operably cooperative with the sides of the vessel so as to seal against passage of coffee grains between the disc and the sides of the vessel from below the disc to part of the interior of the vessel above the disc, wherein the manually operable means for driving the disc downwards within the vessel comprise a screw which depends from the lid by which it is supported for rotation about its axis relative to the lid, a manually enga
  • the seal is a circumferentially continuous ring which is a lip seal as proposed by US- A-2,935,928 becacuse the lip seal wipes the inner surface of the sides of the vessel as the disc is driven downwards.
  • the vessel is formed as a plastics moulding so that the sides of its interior taper from top to bottom as is customary with plastics mouldings for moulding reasons, it is difficult to ensure that the ring seal adequately seals at the top of the vessel without the friction between the material of the seal and the side of the vessel becoming excessive as the piston descends towards the base .
  • One object of this invention is to avoid these problems .
  • a beverage maker for the kind referred, wherein the separator piston disc and the peripheral ring seal are formed as a one-piece mesh disc having a major planar portion and a flared circumferentially extending peripheral portion which serves as the peripheral ring seal portion, the arrangement being such that the peripheral edge of the one-piece mesh disc is in sliding contact with the inner surface of the chamber wail and is displaced axially with respect to the major planar portion, being nearer to the base of the chamber than is that major planar portion.
  • the major planar portion of the one- piece mesh disc is reinforced by radial spokes which project over the face of the major portion which is further from the peripheral edge.
  • the one-piece mesh disc may be heat formed from plastics mesh material and its peripheral edge may be frayed.
  • the coffee maker comprises a hollow vessel (10) in the form of an open topped jug having a pouring spout (11) and which is closed at its upper end by a lid (12) which is releasably fixed to brim of the jug.
  • the lid (12) is formed by moulding.
  • the interior of the vessel (10) is a substantially chamber.
  • the vessel (10) is formed by moulding. As is usual with such hollow moulded products, the side walls of the vessel (10) taper slightly towards the base of the vessel (10).
  • a rotary cap (13) is retained against axial displacement relative to the lid (12) but can be rotated relative to the lid (12) within which it is mounted.
  • a socket (not shown) is formed substantially f> co-axially in the rotary cap (13), the socket (15) opening downwards .
  • a four start thread leadscrew (14) is spigotted into the socket of the rotary cap (13) and depends therefrom through the center of the cylindrical chamber of the vessel (10) so that its lower end is close to the base (15) of the vessel (10).
  • the thread is formed on the exterior surface of the leadscrew (14).
  • the latter may be formed by moulding. Indeed the rotary cap (13) and the leadscrew (14) could be moulded as a one-piece component.
  • the leadscrew (14) may be produced by selecting a length of bar having a cross-section which is substantially square with shallow concave faces and by twisting that length of bar to form it into the leadscrew (14).
  • a nut member (16) is screw-fitted onto the lead screw (14).
  • the nut member (16) is formed as part of a one-piece plastics moulding which also includes a number of radially extending ribs (17) of which two are shown in the drawing.
  • the lower portion of the nut member (16) extends through the central aperture of an annular separator piston disc ( 18 so that the ribs (17) extend over the upper surface of a central planar portion (19) of the piston disc (18).
  • the planar portion (19) is a major portion cf the piston disc (18).
  • the remainder of the piston disc (18) comprises a flared circumferentially extending peripheral portion (21).
  • the flared peripheral portion (21) presents an annular concave surface to the base (15) and has a peripheral edge (22) which is nearer to the base (15) than is the major planar portion (19).
  • the radial ribs provide reinforcement for the major planar portion (19).
  • the annular separator disc (18) is heat formed from a thin plastics mesh material.
  • the mesh material of the separator disc (18) is cut from a sheet of such thin mesh material before it is heat formed into the disc (18).
  • the cut edges would have been frayed edges, comprising circumferentially spaced strands of the plastics material of the mesh. Those frayed edges are tidied up during the heat forming process, individual strands of the plastic material being fused together one to another but the resultant edges will still be frayed rather than being formed into a circumferentially continuous hoop.
  • the mesh is joined to the nut member (16) at the edge of the central aperture as well as to the undersides of the ribs (17).
  • the mesh may be clamped to the undersides of the ribs (17) by similar ribs below the mesh.
  • a rod (23) depends from the lid (12) substantially parallel to the leadscrew (14) and to one side of the leadscrew (14) partway between the leadscrew (14) and the side of the vessel (10).
  • the rod (23) is a sliding fit in an aperture (24) which extends through one of the ribs (17) and the planar portion (19) of the mesh material separator disc (18).
  • a link (25) is joined at one end to the bottom of the rod (23). The lower end of the leadscrew (14) is journalled in the link (25). If the cross-section of the vessel (10) is not circular, the bar (23) ensures that the lid (12) and the annular separator piston
  • the lid (12), the rotary cap (13), the leadscrew (14), the rod (23), the link (25) and the piston disc (18) are removed from the vessel (10). Coffee grains are introduced into the vessel (10) through the open top. The vessel (10) is filled with water to just below the spout (11). The lid (12), the rotary cap (13), the leadscrew (14), the rod (23), the link (25) and the piston disc (18) are refitted with the piston disc (18) adjacent the lid (12).
  • the user rotates the upper portion of the rotary cap (13) thereby rotating the leadscrew (14) and driving the piston disc (18) downwards towards the base (15) of the vessel (10) whereby to separate the residue of the coffee grains from the liquid, liquid coffee being allowed to pass through the interstices of the mesh material of the piston disc (18) during the travel of the piston disc (18).
  • the link (25) limits downwards travel of the piston disc (18) and ensures that the latter is removed from the vessel (10) with the lead screw (14) for charging and cleaning.
  • the bar (23) constrains the piston (18) from turning with the leadscrew (14).
  • the peripheral portion (21) readily conforms to the inner surface of the sides of the vessel against which it is held by the pressure of the mixture of undissolved coffee grains and liquid as it is slid along the inner surface of the vessel towards the base (15) with movement of the piston disc (18) towards the base (15).
  • the fact that the peripheral portion (21) is circumferentially continuous ensures that it provides a circumferentially continuous barrier to the passage of coffee grains between it and the inner wall of the vessel (10) and thus serves as a peripheral ring seal portion of the disc (18).
  • the diameter of the frayed edge (22) is sufficient to ensure contact between the peripheral portion (21) and the inner surface of the sides of the vessel (10) at the top of the travel of the piston disc (18). Hence that contact will increase with movement of the piston disc (18) towards the base (15).
  • the piston disc (18) contributes to the location of the leadscrew (14) within the vessel (10).
  • the rotary cap (13) could be replaced by an arm which is fixed to the top of the leadscrew (14) that projects up through the central aperture of the lid II (12).
  • the arm may have a rotary knob at its outer end.
  • the rotary cap (12 may be provided with such an arm which may be hinged to the cap so that it can be folded and stowed within the planform area of the upper portion of the cap (13) and folded out only when it is needed to turn the leadscrew ( 14 ) .
  • Rotation of the leadscrew (14) could be powered either mechanically or electrically a ⁇ an alternative to the manual operations described above.
  • the annular lid could be simply seated on the brim of the vessel (10) rather than being releasably fixed thereto as described above.
  • the vessel could be made of glass.
  • the leadscrew could be machined from stainless steel.
  • the annular separatcr piston disc (18) could be formed from an appropriate thin woven metal mesh rather than from the thin plastics mesh material described above.
  • the annular separator piston disc could be incorporated in a conventional piston at an end of a rod by which it is driven down the cylindrical chamber by being pushed tcwards the base (15)

Abstract

Le disque du piston de séparation (18) qui est poussé vers la base (15) du pot de cette cafetière comprend une partie principale plane (19) ainsi qu'une partie périphérique évasée (21) présentant une surface annulaire concave tournée vers la base (15) de la cafetière. La partie principale plane (19) et la partie périphérique évasée (21) du disque (18) sont faites d'un tamis monobloc en matière plastique pourvu d'un bord périphérique effilé (22).
PCT/GB2000/000113 1999-01-19 2000-01-18 Recipient a confectionner des breuvages WO2000042890A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9901152.0 1999-01-19
GBGB9901152.0A GB9901152D0 (en) 1999-01-19 1999-01-19 A beverage maker

Publications (1)

Publication Number Publication Date
WO2000042890A1 true WO2000042890A1 (fr) 2000-07-27

Family

ID=10846138

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2000/000113 WO2000042890A1 (fr) 1999-01-19 2000-01-18 Recipient a confectionner des breuvages

Country Status (2)

Country Link
GB (1) GB9901152D0 (fr)
WO (1) WO2000042890A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9232873B2 (en) 2013-06-03 2016-01-12 Starbucks Corporation Method for brewing a beverage

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935928A (en) * 1957-02-28 1960-05-10 Ethel M Keating Coffee pot or the like
WO1995033399A1 (fr) * 1994-06-06 1995-12-14 Brasilia (Uk) Limited Filtre
WO1999058034A1 (fr) 1998-05-12 1999-11-18 Windmill Holdings Limited Appareil a faire des boissons

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2935928A (en) * 1957-02-28 1960-05-10 Ethel M Keating Coffee pot or the like
WO1995033399A1 (fr) * 1994-06-06 1995-12-14 Brasilia (Uk) Limited Filtre
WO1999058034A1 (fr) 1998-05-12 1999-11-18 Windmill Holdings Limited Appareil a faire des boissons

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9232873B2 (en) 2013-06-03 2016-01-12 Starbucks Corporation Method for brewing a beverage

Also Published As

Publication number Publication date
GB9901152D0 (en) 1999-03-10

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