Calibrated handheld espresso tamper

• US 7,992,486 B2
• Filed: 12/17/2004
• Issued: 08/09/2011
• Est. Priority Date: 12/18/2003
• Status: Active Grant

• Current Assignee: DKK Enterprises Incorporated
• Original Assignee: Espro Inc. (Regal Ware Incorporated)
• Inventors: McLean, Christopher, Constantine, Bruce
• Primary Examiner(s): Weier; Anthony
• Application Number:
  US11/016,638
• Publication Number:
  US 20050132890A1
• Time in Patent Office: 2,426 Days
• Field of Search: 426/512, 426/432, 426/433, 426/435, 992/75, 992/80, 992/97, 992/79, 992/95, 992/85, 992/86
• US Class Current: 99/275
• CPC Class Codes: A47J 31/44 Parts or details or accessories of beverage-making apparatus filters or strainers A47J31/06
• CPC Class Codes: A47J 43/28 Other culinary hand implements, e.g. spatulas, pincers, forks or like food holders, ladles, skimming ladles, cooking spoons; Spoon-holders attached to cooking pots

Abstract

An espresso tamper including a force calibration means is shown. The tamper is optimally handheld. Upon force of a desired magnitude being applied by a user, at least one discrete signal, such as an audible, visual, tactile or electrical signal is emitted. The tamper handle includes an anti-rotation feature. The handle is flared to avoid pinching the user'"'"'s fingers during operation and to stop the user'"'"'s fingers from sliding down the handle or in any way touching the base, thereby rendering the tamper more effective and safe. The tamper and force-calibration kit and method of use optimize espresso making.

Claims

1. A handheld espresso tamper for the precisely repeatable application of a tamping force comprising a handle adapted for holding said tamper in the hand of a user, a base, and mechanical tamping force calibration means wherein said mechanical tamping force calibration means are functional to provide at least one discrete tactile signal detectable by a user holding said handle when a tamping force of a desired magnitude has been applied by said base, wherein said base is rotationally fixed to said handle such that rotation of said handle by said user results in corresponding rotation of said base.

2. The handheld espresso tamper of claim 1 wherein the desired magnitude of the tamping force is adjustable by said user.

3. The handheld espresso tamper of claim 1 wherein said at least one discrete tactile signal additionally comprises at least one of an audible signal, a visual signal, or combination thereof.

4. The handheld espresso tamper of claim 1, wherein said mechanical tamping force calibration means are substantially enclosed within said handle and/or said base.

5. The handheld espresso tamper of claim 4 wherein said desired magnitude of the tamping force is set at the point of manufacture, and is not able to be modified by said user of said tamper without at least partial disassembly of said tamper.

6. The handheld espresso tamper of claim 1, wherein said handle is formed in a shape suitable for accurate manual application of the tamping force to the handle by a user of the tamper and for preventing said user'"'"'s fingers from resting on the base during operation.

7. The handheld espresso tamper of claim 1, wherein said handle comprises a flare or ridge at a lower portion of said handle.

8. The handheld espresso tamper of claim 1, wherein said handle is formed in a shape suitable for preventing the fingers of said user of said tamper from being pinched between said handle and said base during use.

9. The handheld espresso tamper of claim 1 wherein said mechanical tamping force calibration means further comprises a tactile signal dome means.

10. The handheld espresso tamper of claim 1 wherein said desired magnitude of the tamping force at which the signal is actuated is between 5 and 100 lbs force.

11. The handheld espresso tamper of claim 1 wherein said desired magnitude of said tamping force at which said tactile signal is actuated is between 20 and 40 lbs force.

12. The handheld espresso tamper of claim 2 wherein said desired magnitude of said tamping force is adjustable to a multiplicity of indexed magnitudes ranging between 5 to 100 lbs force.

13. The handheld espresso tamper of claim 2 wherein said desired magnitude of said tamping force is adjustable to a multiplicity of indexed magnitudes ranging between 20 to 40 lbs force.

14. The handheld espresso tamper of claim 1, wherein said base is adapted to fit within a desired espresso portafilter such that said tamping force may be applied directly to a quantity of coffee grounds within said portafilter.

15. A tamper comprising a base with a substantially flat bottom and an upper portion extending substantially vertically from said base and comprising a handle adapted for holding said tamper in the hand of a user, said tamper further comprising a mechanical tamping force calibration device disposed within said upper portion, wherein the mechanical tamping force calibration device comprises a mechanical tactile tamping force indicator, wherein said mechanical tamping force calibration device is operable such that upon activation, a discrete tactile signal corresponding to the application of a desired precisely repeatable tamping force magnitude is generated by the mechanical tactile tamping force indicator and is detectable by a user holding said handle, and wherein said base is rotationally fixed to said handle such that rotation of said handle by said user results in corresponding rotation of said base.

16. The tamper of claim 15 wherein said tamper is a handheld espresso tamper.

17. The tamper of claim 15 wherein said upper portion is rotationally fixed in relation to said base.

18. The tamper of claim 15 wherein said upper portion comprises a flange adapted to abut the fingers of a user.

19. The tamper of claim 15 wherein said upper portion comprises said handle disposed about a moveable plunger, said plunger depressible by a user upon application of a desired tamping force, wherein when said desired tamping force is applied, said mechanical tamping force calibration device, comprising a signal dome, snaps from a first position to a second position generating at least one of a tactile signal and an audible signal detectable by said user.

20. The tamper of claim 19 wherein said handle comprises an obstruction adapted to inhibit a user'"'"'s hand from sliding down said handle.

21. A tamper force calibration kit comprising a mechanical tamper force calibration means which comprises a tactile signal generating means, said tamper force calibration kit adapted to be integrated into a handheld tamper for the precisely repeatable application of a tamping force directly to a tamped material, said handheld tamper comprising a base and a handle adapted for holding said handheld tamper in the hand of a user, wherein said mechanical tamping force calibration means are functional to provide at least one discrete tactile signal detectable by a user of said handheld tamper holding said tamper when a tamping force of a desired magnitude has been applied, wherein said base is rotationally fixed to said handle such that rotation of said handle by said user results in corresponding rotation of said base.