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US4070955A Expired / Lapsed US ⏱️ 0.0 years remaining

Coffee filter

Assignee: Maxs AG
•
Filing: 1976-11-22
•
Granted: 1978-01-31
•
Expires: 1996-11-22
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Abstract

Abstract A filtering device for the preparation of coffee, with a pot-shaped vessel, at the bottom of which a sieve sheet is attached, and with a water distribution plate, which is adapted to be supported by the upper edge of the vessel. The diameter of the water distribution plate is smaller than the inner diameter of the vessel, and a plurality of feet protrude from the edge of the water distribution plate nearly perpendicularly to the surface of the same. The free ends of the feet each form a shoulder, which serve to rest on the upper edge of the vessel such that the water distribution plate lies within the interior of the vessel and leaves a circumferential clearance to the same. Hot water which is poured onto the water distribution plate flows through that clearance onto the coffee powder. The water distribution plate may be removed from the vessel and laid onto a surface with its feet down as a base plate for the vessel, thus collecting water that might still pass through the filter. A rim protruding from the circumference of the water distribution plate prevents water from flowing down when the same is used as a base plate.

Inventors

  • 👤 Werner Braun

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-10 01:13
CPC Classifications
A; A47; A47J; A47J31/00; A47J31/02

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 162 words
A filtering device for the preparation of coffee, comprising a pot-shaped vessel, a sieve attached to the bottom of said vessel, and a water distribution plate adapted to be supported by the upper edge of said vessel, characterized by the fact that the diameter of the water distribution plate (6) is smaller than the inner diameter of the vessel (1), that at least three feet (8) protrude from the edge of the water distribution plate generally perpendicularly to the surface of the same, that the free ends of the feet (8) are provided with shoulders (8a) adapted to be put onto the upper edge (5) of said vessel, that the water distribution plate is provided with a rim (7) protruding from its front side (11) which is opposite to the feet (8), and that the edge (2) of the bottom of the vessel (1) is dimensioned such that it has a configuration which is within an area defined by said rim (7).
Claim 2
Dependent Claim 162 words
A filtering device for the preparation of coffee, comprising a pot-shaped vessel, a sieve attached to the bottom of said vessel, and a water distribution plate adapted to be supported by the upper edge of said vessel, characterized by the fact that the diameter of the water distribution plate (6) is smaller than the inner diameter of the vessel (1), that at least three feet (8) protrude from the edge of the water distribution plate generally perpendicularly to the surface of the same, that the free ends of the feet (8) are provided with shoulders (8a) adapted to be put onto the upper edge (5) of said vessel, that the water distribution plate is provided with a rim (7) protruding from its front side (11) which is opposite to the feet (8), and that the edge (2) of the bottom of the vessel (1) is dimensioned such that it has a configuration which is within an area defined by said rim (7).
Claim 3
Dependent Claim 41 words
A filtering device according to claim 1, characterized by the fact that the length of one of the shoulders (8a) of one foot (8) is dimensioned such that it protrudes over the edge of the vessel (1) thus forming a handle.
Claim 4
Dependent Claim 31 words
A filtering device according to claim 1, characterized by the fact that the front surface (10) of the water distribution plate (6) next to the feet (8) has a convex shape.
Claim 5
Dependent Claim 31 words
A filtering device according to claim 1, characterized by the fact that the front side (11) of the water distribution plate (6) opposite to the feet (8) has a concave shape.
Claim 6
Dependent Claim 19 words
A filtering device according to claim 1, characterized by the fact that the feet (8) are obliquely outwardly inclined.

References Cited (Backward Citations)

US370141A Cited
US1456010A Cited
DE647047C Cited
US2365269A Cited
FR1214364A Cited
DE2359348A1 Cited
US3983797A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1981-01-30 1981-08-01 1982-01-31 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1985-01-30 1985-08-01 1986-01-31 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1989-01-30 1989-08-01 1990-01-31 $7700.00 Window Closed / Lapsed

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