US 12,520,963 B2Granted

Handheld filter press

AssigneeKaz Europe SàRl

InventorsChristopher Diskin, Brandon Rodriguez, Nicolas Ernesto Fong

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Abstract

A handheld filter press includes a pump, a water chamber, and a portafilter basket. The pump includes a pump housing that defines a pump chamber configured to pressurize air, and defines a pump outlet for exhausting pressurized air. The pump includes an outlet valve fluidly connected with the pump outlet. The outlet valve allows air to exit the pump chamber and prevents air from entering the pump chamber through the pump outlet. The water chamber is fluidly connected with the pump chamber through the outlet valve for receiving pressurized air from the pump chamber. The water chamber defines a water chamber outlet for exhausting pressurized air and water from the water chamber. The portafilter basket is fluidly connected with the water chamber for receiving pressurized water from the water chamber through the water chamber outlet. The portafilter basket is configured to store grounds, and to express a brewed beverage.

Claims20

Dependent claims

A handheld filter press comprising:

a pump including:
a pump housing that defines a pump chamber configured to pressurize air, and defines a pump outlet for exhausting pressurized air from the pump chamber;
an outlet valve fluidly connected with the pump outlet, wherein the outlet valve allows air to exit the pump chamber and prevents air from entering the pump chamber through the pump outlet;
a water chamber fluidly connected with the pump chamber through the outlet valve for receiving pressurized air from the pump chamber, wherein the water chamber defines a water chamber outlet for exhausting pressurized air and water from the water chamber;
and
a portafilter basket fluidly connected with the water chamber for receiving pressurized water from the water chamber through the water chamber outlet, wherein the portafilter basket is configured to store grounds, and to express a brewed beverage;
wherein the pump further includes a piston disposed in the pump chamber and configured for moving along a pump axis relative to the pump housing between an extended position and a retracted position,
wherein the piston pressurizes air in the pump chamber and drives air from the pump chamber through the outlet valve when the piston is moved from the extended position toward the retracted position, and the piston draws air into the pump chamber when the piston is moved from the retracted position toward the extended position,
wherein the pump further includes a handle fixed with the piston and configured for driving the piston from the extended position toward the retracted position, and
wherein when the piston is in the retracted position along the pump axis, the handle is configured to twist around the pump axis between a locked position and an unlocked position, wherein the piston is retained in the retracted position along the pump axis when the handle is rotated to the locked position, and the piston is unobstructed from moving toward the extended position when the handle is rotated to the unlocked position.

7 more elements

A handheld filter press comprising:

a pump including a pump housing, wherein the pump housing defines a pump chamber extended along a pump axis and configured to pressurize air, and the pump housing defines a pump outlet for exhausting pressurized air from the pump chamber;
a water chamber removably fixed with the pump housing, wherein the water chamber is fluidly connected with the pump chamber through the pump outlet, and configured to store air and water above atmospheric pressure when fixed with the pump housing;
a portafilter basket removably fixed with the water chamber at an end of the water chamber opposite the pump such that the pump, the water chamber, and the portafilter basket are aligned with each other on the pump axis, wherein the portafilter basket is fluidly connected with the water chamber, configured to store grounds, and configured to express a brewed beverage;
a first water chamber gasket sealing the water chamber with the pump housing, around the pump outlet, when the water chamber is fixed with the pump housing;
and
a second water chamber gasket sealing the water chamber with the portafilter basket when the water chamber is fixed with the portafilter basket.

3 more elements

A handheld filter press comprising:

a pump including a pump housing, wherein the pump housing defines a pump chamber extended along a pump axis and configured to pressurize air, and the pump housing defines a pump outlet for exhausting pressurized air from the pump chamber;
a water chamber removably fixed with the pump housing, wherein the water chamber is fluidly connected with the pump chamber through the pump outlet, and configured to store air and water above atmospheric pressure when fixed with the pump housing;
and
a portafilter basket removably fixed with the water chamber at an end of the water chamber opposite the pump such that the pump, the water chamber, and the portafilter basket are aligned with each other on the pump axis, wherein the portafilter basket is fluidly connected with the water chamber, configured to store grounds, and configured to express a brewed beverage;
wherein the pump further includes:
a piston disposed in the pump chamber and configured for moving along a pump axis relative to the pump housing between an extended position and a retracted position, wherein the piston defines a groove in a piston side wall, around the piston along an outer perimeter of the piston, in a circumferential direction perpendicular to the pump axis, and the piston defines a channel from the groove to the pump chamber;
and
a pump gasket disposed in the groove and configured to seal the pump housing with the piston in the pump chamber when the piston moves from the extended position to the retracted position, thereby pressurizing the pump chamber,
wherein the piston defines a channel in the piston side wall from the groove to the pump chamber, wherein the channel is configured to communicate air across the piston from around the pump gasket when the piston moves from the retracted position to the extended position.

6 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/968,012Filed 18 Oct 2022
Published: US 2024/0122395 A118 Apr 2024
Granted: 13 Jan 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

A47J 31/32
Coffee-making apparatus in which hot water is passed through the filter under pressure, i.e. in which the coffee grounds are extracted under…
A47J 31/005
Apparatus for making beverages: portable or compact beverage making apparatus, e.g. for travelling, for use in automotive vehicles
A47J 31/38
With mechanical pressure-producing means: operated by hand
A47J
Kitchen equipment