WO2017118545A1 - Tasse-mouture - Google Patents

Tasse-mouture Download PDF

Info

Publication number
WO2017118545A1
WO2017118545A1 PCT/EP2016/080894 EP2016080894W WO2017118545A1 WO 2017118545 A1 WO2017118545 A1 WO 2017118545A1 EP 2016080894 W EP2016080894 W EP 2016080894W WO 2017118545 A1 WO2017118545 A1 WO 2017118545A1
Authority
WO
WIPO (PCT)
Prior art keywords
handle
punch
housing
tamper
coffee
Prior art date
Application number
PCT/EP2016/080894
Other languages
German (de)
English (en)
Inventor
Otto Hauck
Original Assignee
Otto Hauck
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 Otto Hauck filed Critical Otto Hauck
Publication of WO2017118545A1 publication Critical patent/WO2017118545A1/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
    • A47J31/44—Parts or details or accessories of beverage-making apparatus

Definitions

  • the invention relates to a tamper for manual pressing of ground coffee or coffee powder.
  • Ground coffee or coffee powder is produced by grinding roasted coffee beans. Such a slice of pressed, ground coffee is also referred to as a puck.
  • a barista uses a coffee strainer into which the ground coffee is ground (ground in) by means of a coffee grinder. For easier handling of the sieve this usually takes place in a portafilter receiving.
  • a portafilter consists essentially of a receiving tray, which is preferably in the form of a cup-shaped cup, for the coffee grinder, laterally provided on the receiving tray lugs or tabs, and a handle. Below the receiving tray for the coffee sieve is an opening that communicates with one (single cover, single serving) or more spouts (usually two, double cover double serving).
  • a tamper essentially consists of a handle and a punch with a surface for pressing the ground coffee.
  • Exemplary tamper are known from the documents US 00D375233 S or DE 20 2008 009 380 Ul.
  • the barista inserts the portafilter with the sieve containing the puck into a coffee machine to carry out the brewing process.
  • hot water is forced through the puck, which absorbs the tasty ingredients of the ground coffee and as coffee penetrates through the opening and / or spouts into one or more of the coffee cup (s) provided by the barista.
  • the barista In order to achieve a qualitatively excellent result, i. E. To achieve a tasty coffee, the barista must take care during the tamping that a sufficient pressing force is exerted on the ground coffee, since the puck should have a uniform thickness and density. For this purpose, a force corresponding to a weight of a mass of about 15 to 20 kg must be applied to the coffee grounds by means of the tamper. But for the good quality result, it is also extremely important that the surface of the puck is formed horizontally in all axes.
  • the surface of the puck is formed obliquely, namely, this leads to an irregular thickness of the puck.
  • the water is not uniformly pushed by the puck during the brewing process, but flows due to gravity along the inclined surface to a lowest point of the surface of the puck and accumulates there before being pushed by the puck.
  • the portion of the ground coffee in this thinner portion of the puck is excessively leached while only relatively little water is forced through the thicker portion of the puck. Therefore, the ground coffee present in the thicker portion of the puck can not dispense its ingredients in the intended manner. The result is a thin, bad-tasting coffee.
  • the document US 2007/0132164 Al discloses a tamper having a handle and a punch which are connected via a shaft mounted in a housing. In an unactuated state, the punch protrudes from the housing. If this tamper is used according to the prior art in a coffee grinder and exerted pressure on the handle, the stamp is moved against a biasing force of a first spring in the direction of the housing. Upon reaching a given hubs according to a certain pressure force, a lock is released and the pressure force for pressing must be increased to overcome spring forces of other arranged in the handle and acting only after releasing the locking springs.
  • An inventive tamper for manual pressing of ground coffee or coffee powder is provided with a handle, a punch with a pressing surface and a shaft mounted in a housing, which connects the punch with the handle.
  • the punch is movable by operating the handle in a pressing direction orthogonal to the pressing surface.
  • the handle acts on the shaft via a positive locking element acting perpendicular to the pressing direction.
  • a stop element for limiting a stroke in the pressing direction can be provided on the handle.
  • the shaft may be formed at its end facing the handle in the form of a tube. In this case, one end of the handle can be accommodated within the tube.
  • the interlocking element may be guided through the end of the handle and be in engagement with a recess on an inner wall of the tube.
  • the positive-locking element may be formed from a prestressed ball, and the recess may have a shape of a circular segment.
  • the positive-locking element Due to the configuration and arrangement of the positive-locking element, it is possible to release the positive connection when reaching a predetermined pressure force on the handle before the stroke is limited by means of the stop element.
  • This pressure force also known as the release force, corresponds to the optimal force for compacting the coffee puck.
  • the tamper according to the invention by pressing (pressing) of the handle, the punch in a first phase of operation with relatively low pressure force away from the bottom of the housing. It is already being started to train the coffee puck. Thereafter, in a second phase upon reaching the release force, the optimum pressure force can be applied to complete the coffee puck. The user recognizes the achievement of the optimum pressure force by releasing the positive connection.
  • the biasing force for biasing the ball into the recess may be adjustable.
  • the triggering force can be adjusted by the adjustment according to the user's specifications.
  • An outer dimension of the housing may be larger than an outer dimension of the punch.
  • the stamp can rest against the housing in an unactuated state of the handle. In this case, a step is then formed by means of a peripheral surface of the punch and the supernatant (bottom) of the housing.
  • the tamper according to the invention can be brought into positive contact with a coffee sieve on account of the step. Therefore, an oblique placement of the punch can be easily avoided when the bottom of the housing rests on the entire edge of the coffee grinder. Therefore, it is ensured that the surface of the coffee puff formed by pressing is actually horizontal, i. parallel to the screen surface, and the coffee puck has a uniform thickness and density.
  • the term horizontal is to be understood with reference to a correctly set up coffee machine (espresso machine), in which the coffee sieve is clamped with the coffee puck. Namely, it is not necessary to keep the coffee grinder and the tamper in a predetermined position during the tampering process as soon as the tamper has been placed on the sieve.
  • the applied state of the stamp on the housing can be brought about by means provided in the housing biasing element.
  • the biasing element may be in the form of a coil spring.
  • the biasing element By the biasing element a return of the punch to the housing after use is ensured. In addition, it can be prevented that when placing the tamper on the coffee grinder is touched by a projecting from the housing punch the ground coffee and compacted.
  • FIG. 1 shows a schematic view of a tamper according to the invention in the unloaded state
  • FIG. 2 shows a schematic view of the tamper from FIG. 1 in the loaded state
  • FIG. 3 shows a schematic sectional view of the tamper from FIG. 1 in the unloaded state
  • Figure 4 is a schematic sectional view of the tamper of Figure 1 in the loaded state in a first loading phase
  • Figure 5 is a sectional view of the tamper of Figure 1 in the loaded state in a second loading phase.
  • the tamper has a handle 1 and a punch 3 with a pressing surface 5 in the form of a substantially planar surface.
  • the pressing surface 5 gets in use of the tamper with the ground coffee in contact to compact this.
  • the handle 1 and the punch 3 are connected by means of a shaft 9, which is mounted in a housing 7.
  • the shank 9 is formed at an end directed towards the handle 1 in the form of a tube 9a.
  • a cylindrically shaped end 1a of the handle 1 is inserted into the pipe 9a.
  • two recesses 9b and 9c are formed on the inner wall of the tube 9a.
  • the recess 9b has the shape of a circle segment in cross-section, and the recess 9c has a substantially cylindrical shape.
  • the recess 9c is closer to the open end of the tube 9a than the recess 9b.
  • the second bore is located between the handle 1 and the bore described above. Through this second bore a the positive locking element similar stop element is guided.
  • This has a cylindrical pin 19 instead of the ball element 17.
  • the cylinder pin 19 is received in the recess 9c. Since a height of the recess 9c exceeds the diameter of the cylindrical pin 19, the cylindrical pin 19 is movable within the recess 9c between an upper edge and lower edge visible from FIGS. 3 to 5.
  • a biasing force of a spring 13 of the stop element is also adjustable by means of a threaded pin with the bore threaded engagement (grub screw) 20. Instead of "grub screw", the colloquial term "grub screw” is used below. In Austria, such a screw element is also known as a "worm screw”.
  • the biasing force of the spring 13 is set such that the cylinder pin 19 is retained in the recess without excessive frictional forces between the cylinder pin and the wall of the recess 9c arise. Excessive frictional forces would hinder or distort the application of the intended compressive force to produce the coffee puck.
  • the punch 3 is formed substantially in the form of a cylindrical disc. A side facing away from the handle 1 and the housing 7 of the punch forms the pressing surface 5, which gets in contact with the ground coffee during the pressing operation.
  • the pressing surface 5 is a substantially planar surface whose shape is not limited to a precisely planar surface, but which, for example, in shape a corrugated surface or a surface provided with small depressions and small protrusions may be formed.
  • a threaded connection 4 is provided in the form of an internal thread. This threaded connection serves to connect the punch 3 with an external thread formed on the end of the shaft 9.
  • the housing 7 is designed as a rotationally symmetrical part and has a cylindrical cavity in its interior.
  • a bottom of the cylindrical cavity is provided with a bore through which the threaded connection 4 of the punch is guided.
  • an annular spacer 6 is provided at the bottom, whose outer diameter corresponds to the inner diameter of the cylindrical cavity and whose inner diameter corresponds to the outer diameter of the threaded connection 4 and the shaft 9.
  • the annular spacer 6 serves as a guide for the shaft 9 when the handle 1 is operated to move the punch 3 in the pressing direction z (along the direction of the rotation axis).
  • a handle 1 facing the end of the shaft 9 is expanded to a cylindrical tube 9 a.
  • a coil spring 11 is held as a biasing member between the bottom of the cylindrical tube 9 a and the annular spacer 6.
  • the coil spring 11 has a comparatively small spring constant, which is sufficient to push apart the tube 9a and the annular spacer 6 while pulling the punch 3 to the bottom 7b of the housing 7 until the punch 3 and the bottom of the housing 7 together in Appendix, as shown in Figure 1 or in Figure 3 is shown.
  • a circumferential surface (cylinder jacket of the disk) 3a of the punch 3 forms a step with an annular bottom piece 7a of the housing 7.
  • the bottom piece 7a is formed of a metal or a plastic material.
  • a PTFE material is used for the bottom piece 7a.
  • the disc of the punch 3 serves for exact centering. Since it is very easy to ensure that the annular bottom piece 7a of the housing 7 rests completely on the edge of the coffee grinder, it is ensured that upon actuation of the handle 1 and displacement of the punch 3 in the pressing direction z a coffee puck of uniform thickness and density is formed in the coffee grinder. Since the annular bottom piece 7a is preferably made of the PTFE material, it comes only to a low noise and low wear when placed on the edge of the usually metallic Statesiebs.
  • a pressing force is exerted in the direction of the axis of rotation of the tamper (the housing 7) in the pressing direction z.
  • the pressure force is transmitted from the handle 1 via the ball 17 of the positive-locking element on the tube 9 a of the shaft 9. Since the spring constant of the coil spring 11 is merely sized to be sufficient to pull the punch to the bottom of the housing 7, it is already possible with a low compressive force to remove the punch 3 in the pressing direction z from the housing 7 until the coil spring 11 is completely compressed. This can be seen in FIGS. 2 and 4.
  • a second phase the pressure force on the handle 1 is increased until it is large enough to ensure that the prestressed ball element 17 is pressed out of the cross-sectionally circular segment-shaped recess.
  • the stroke of the tamper is limited by a flange lb at the upper end of the cylindrical end la directly under the handle 1, which comes into contact with the upper edge of the tube 9a in the figures in Appendix.
  • the compressive force in this second phase corresponds to a weight of a mass of 15 to 20 kg.
  • the exact magnitude of the compressive force depends on the biasing force of the positive locking element, which is adjusted via the grub screw 18 according to the preferences of the barista using the tamper.
  • the cylindrical pin 19 can alternatively be used, which can be brought into contact with the lower edge of the recess 9c in the figures for this purpose.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Tea And Coffee (AREA)
  • Apparatus For Making Beverages (AREA)

Abstract

La présente invention concerne un tasse-mouture pour le tassement manuel de mouture de café ou de poudre de café, présentant une poignée (1), un piston (3) doté d'une surface de compression (5) et une tige (9) montée dans un boîtier (7). La tige (9) relie le piston (3) à la poignée (1). Le piston (3) peut être mu par actionnement de la poignée (1) dans une direction de compression (z) orthogonale à la surface de compression (5). La poignée (1) agit sur la tige (9) par l'intermédiaire d'un élément à complémentarité de forme (15, 17, 18) agissant perpendiculairement à la direction de compression (z).
PCT/EP2016/080894 2016-01-07 2016-12-14 Tasse-mouture WO2017118545A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EPPCT/EP2016/050222 2016-01-07
PCT/EP2016/050222 WO2017118484A1 (fr) 2016-01-07 2016-01-07 Tasse-mouture

Publications (1)

Publication Number Publication Date
WO2017118545A1 true WO2017118545A1 (fr) 2017-07-13

Family

ID=55072666

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/EP2016/050222 WO2017118484A1 (fr) 2016-01-07 2016-01-07 Tasse-mouture
PCT/EP2016/080894 WO2017118545A1 (fr) 2016-01-07 2016-12-14 Tasse-mouture

Family Applications Before (1)

Application Number Title Priority Date Filing Date
PCT/EP2016/050222 WO2017118484A1 (fr) 2016-01-07 2016-01-07 Tasse-mouture

Country Status (2)

Country Link
DE (1) DE202016008590U1 (fr)
WO (2) WO2017118484A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019144363A1 (fr) * 2018-01-26 2019-08-01 孙祖兵 Procédé de bourrage de café par impact reposant sur une pression constante
WO2020071799A1 (fr) * 2018-10-03 2020-04-09 이재우 Presse-café

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2530343B (en) * 2014-09-22 2018-03-28 Clockwork Espresso Ltd Coffee tamper
GR20180100370A (el) * 2018-08-08 2020-04-15 Ιωαννης Βασιλειου Λιαπης Πατητηρι καφε εσπρεσσο
CN112674604A (zh) * 2019-10-18 2021-04-20 童·林约翰 具有缓冲机构的咖啡手柄平衡座及其配套的咖啡冲压系统
TWI740800B (zh) * 2021-04-20 2021-09-21 永德 謝 推壓裝置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050132890A1 (en) * 2003-12-18 2005-06-23 Espro, Inc. Calibrated handheld espresso tamper
US20070132164A1 (en) * 2005-12-13 2007-06-14 Marco Petiziol Manual press
DE202007012898U1 (de) * 2007-09-14 2007-11-29 Rexroth, Joerg F. Kaffeemehlpresser mit regelbarem Maximaldruck
WO2014203073A1 (fr) * 2013-06-17 2014-12-24 Mazzer Luigi S.R.L. Dispositif permettant de presser la poudre de café dans le support de filtre

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050132890A1 (en) * 2003-12-18 2005-06-23 Espro, Inc. Calibrated handheld espresso tamper
US20070132164A1 (en) * 2005-12-13 2007-06-14 Marco Petiziol Manual press
DE202007012898U1 (de) * 2007-09-14 2007-11-29 Rexroth, Joerg F. Kaffeemehlpresser mit regelbarem Maximaldruck
WO2014203073A1 (fr) * 2013-06-17 2014-12-24 Mazzer Luigi S.R.L. Dispositif permettant de presser la poudre de café dans le support de filtre

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2019144363A1 (fr) * 2018-01-26 2019-08-01 孙祖兵 Procédé de bourrage de café par impact reposant sur une pression constante
WO2020071799A1 (fr) * 2018-10-03 2020-04-09 이재우 Presse-café
US20210244231A1 (en) * 2018-10-03 2021-08-12 Zae Woo Lee Coffee tamper
EP3861896A4 (fr) * 2018-10-03 2022-07-13 Zae Woo Lee Presse-café
US11882957B2 (en) 2018-10-03 2024-01-30 Zae Woo Lee Coffee tamper

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Publication number Publication date
WO2017118484A1 (fr) 2017-07-13
DE202016008590U1 (de) 2018-08-01

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