Pump coffee brewer

Patent metadata

Field	Value
Publication number	US-10470602-B2
Application number	US-201113158673-A
Country	US
Kind code	B2
Filing date	Jun 13, 2011
Priority date	Jun 13, 2011
Publication date	Nov 12, 2019
Grant date	Nov 12, 2019

Abstract

A pump coffee brewer and related methods of use for brewing individual servings of coffee. The pump coffee brewer can include a pump assembly, brew chamber assembly and filtration assembly, whereby user manipulation of the pump assembly directs heated water through ground coffee to form freshly brewed coffee. The pump coffee brewer can physically interface with a coffee mug for receiving the freshly brewed coffee while in some alternative embodiments, a discharge assembly can be incorporated for filling the coffee mug. The pump coffee brewer all provide a coffee consumer the ability to generate individual servings of freshly brewed coffee on demand.

First claim

The invention claimed is:

1. A coffee brewer, comprising:
a pump assembly having a deformable exterior wall;
a brew chamber assembly adapted to receive ground coffee and heated water, the brew chamber assembly including a pressure plate, a plurality of plate springs, and an opening having a shut off valve, said shut off valve having an actuation body, the shut off valve further including a valve spring and a sealing member, said valve spring mounted around the actuation body; and
a filtration assembly mounted within the brew chamber assembly,
wherein application of downward pressure to said deformable exterior wall generates sufficient pressure on said plate springs within said brew chamber assembly such that said pressure plate is directed upwards and said valve spring is thereby compressed such that said sealing member is lifted away from said opening so as to allow said heated water to be directed through ground coffee, and wherein the filtration assembly retains the ground coffee such that brewed coffee passes through said filtration assembly, though said opening and into a mug,
and wherein said plate springs and said pressure plate return to an uncompressed state when the previously sufficient downward pressure is removed such that said valve spring also returns to an uncompressed state and said sealing member thereby lowers and engages with said opening to block said opening, such that any flow between the brew chamber and the mug only occurs when the downward pressure is applied to the deformable exterior wall.

2. The coffee brewer of claim 1 , wherein the filtration assembly comprises a coarse filter and fine filter.

3. The coffee brewer of claim 2 , wherein the fine filter comprises a disposable fine filter.

4. The coffee brewer of claim 1 , wherein the pump assembly includes an air valve mounted in said deformable exterior wall, said air valve opening in response to a vacuum condition within the brew chamber assembly such that the brew chamber assembly is vented to atmosphere.

5. The coffee brewer of claim 1 , wherein the brew chamber assembly includes an interface portion having a perimeter wall defining an engagement opening, said engagement opening accommodating an upper mug surface of a coffee mug.

6. The coffee brewer of claim 5 , wherein the interface portion includes the pressure plate within the engagement opening, the pressure plate defining the lower valve opening, wherein the brewed coffee flows into the coffee mug through the lower valve opening.

7. A coffee brewer, comprising:
means for receiving heated water and ground coffee; and
means for manually applying downward pressure to the heated water such that a means for separating can retain the ground coffee,
wherein the means for receiving heated water and coffee includes a pressure plate, a plurality of plate springs, a central opening having a shut off valve including an actuation body, the shut off valve further including a valve spring and a sealing member with said valve spring mounted around the actuation body, the shut off valve being opened relative to a central opening in response to the means for manually applying downward pressure generating sufficient pressure on the plurality of plate springs such that the pressure plate is directed upwards, the valve spring is compressed and the sealing member is thereby lifted from the central opening, and wherein the shut off valve only allows for flow from the means for receiving to the coffee mug, and only when sufficient downward pressure is applied on the plurality of plate springs by the means for manually applying downward pressure.

8. The coffee brewer of claim 7 , wherein the means for retaining comprises a brew chamber assembly.

9. The coffee brewer of claim 8 , wherein the means for manually applying downward pressure comprises a manual pump assembly attached to the brew chamber assembly.

10. The coffee brewer of claim 9 , wherein the means for separating comprises a filter assembly having a permanent coarse filter and a disposable fine filter.

Assignees

• Geissler Richard L
• Nat Presto Industries Inc

Inventors

• Geissler Richard L

Classifications

• A47J31/02 Primary

  Coffee-making machines with removable extraction cups, to be placed on top of drinking-vessels {i.e. coffee-makers with removable brewing vessels, to be placed on top of beverage containers, into which hot water is poured}, e.g. cafe filter (filters A47J31/06) · CPC title