US3935318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Disposable apparatus for brewing a beverage such as coffee
Assignee: Individual
•
Filing: 1974-10-12
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Granted: 1976-01-27
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Expires: 1994-10-12
Abstract
Abstract The invention is directed to an apparatus for brewing a beverage such as coffee or tea. A disposable disc-shaped receptacle contains a predetermined quantity of solid beverage material. The flat lower surface of the receptacle contains a plurality of perforations permitting a flow of hot water into the receptacle for brewing the beverage material. The upper portion of the receptacle is a concave flexible membrane. An actuating rod or stick is attached to the membrane for manually flexing the membrane up and down during brewing. The user places the receptacle into a cup of hot water and using the stick, manually flexes the membrane up and down inducing successive positive and negative pressure variations inside the receptacle. These pressure variations suck and expel hot water through the perforations and thoroughly circulate the water inside the receptacle and throughout the beverage material for brewing. The receptacle is removed from the cup and discarded when the liquid beverage reaches the desired strength.
Inventors
- 👤 Sergio Mihailide
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:22
CPC Classifications
B; B65; B65D; B65D85/00; B65D85/70; B65D85/804; B65D85/808; B65D85/812; A; A47; A47J; A47J31/00; A47J31/18; A47J31/20
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
127 words
Disposable device for use with a cup of hot water for brewing a single cup of a beverage, comprising: a receptacle containing a predetermined quantity of ground beverage material selected from the group consisting of coffee and tea, said receptacle having a circular horizontal cross-section and a height that is less than the diameter of said cross-section, said receptacle including an annular side portion non-permeable to water a lid that is flexible for vertical reciprocating action and non-permeable to water and a bottom surface that is permeable to water, and manual pumping means flexing only the lid of said receptacle for providing reciprocating flow of said hot water through said water permeable bottom surface and forced circulation of said hot water throughout the beverage material for brewing.
Claim 2
Dependent Claim
127 words
Disposable device for use with a cup of hot water for brewing a single cup of a beverage, comprising: a receptacle containing a predetermined quantity of ground beverage material selected from the group consisting of coffee and tea, said receptacle having a circular horizontal cross-section and a height that is less than the diameter of said cross-section, said receptacle including an annular side portion non-permeable to water a lid that is flexible for vertical reciprocating action and non-permeable to water and a bottom surface that is permeable to water, and manual pumping means flexing only the lid of said receptacle for providing reciprocating flow of said hot water through said water permeable bottom surface and forced circulation of said hot water throughout the beverage material for brewing.
Claim 3
Dependent Claim
27 words
The device of claim 1 wherein said bottom surface contains a plurality of perforations, said receptacle including a filter between said bottom surface and said beverage material.
Claim 4
Dependent Claim
10 words
The device of claim 1 wherein said lid is circular.
Claim 5
Dependent Claim
24 words
The device of claim 3 wherein said lid includes a stand-off portion at the center thereof having a recess for receiving said actuating stick.
Claim 6
Dependent Claim
43 words
The device of claim 4 wherein said actuating stick includes an upper portion having a first diameter, and a lower portion having a second diameter larger than said first diameter, said lower portion engaging the recess of said stand-off portion of said lid.
Claim 7
Dependent Claim
19 words
The device of claim 1 including a peel-off seal for covering the water permeable bottom surface of said receptacle.
Claim 8
Dependent Claim
27 words
The device of claim 6 wherein said peel-off seal is removably attached to said bottom surface with adhesive means, and includes a grip tab for easy removal.
Claim 9
Dependent Claim
12 words
The device of claim 1 wherein said lower portion is a perforated.
Claim 10
Dependent Claim
13 words
The device of claim 3 wherein said flexible lid has a concave surface.
Claim 11
Dependent Claim
24 words
The device of claim 2 wherein said receptacle is formed of a material selected from the group consisting of polystyrene, polypropylene and polyvinyl chloride.
Claim 12
Dependent Claim
12 words
The device of claim 2 wherein said lower portion is a circular.
Claim 13
Dependent Claim
23 words
The device of claim 11 wherein the diameter of said lid is larger than the diameter of said bottom surface of said receptacle.
Claim 14
Dependent Claim
18 words
The device of claim 10, wherein said lid is heat-sealed to the annular side portion of said receptacle.
Claim 15
Dependent Claim
13 words
The device of claim 2 wherein said receptacle is formed of aluminum foil.
Claim 16
Dependent Claim
31 words
The device of claim 5, wherein said stand off portion comprises a tapered wall portion having a plurality of cross-cuts, a recess for receiving said lower portion of said actuating stick.
Claim 17
Dependent Claim
127 words
Disposable device for use with a cup of hot water for brewing a single cup of a beverage, comprising: a receptacle containing a predetermined quantity of ground beverage material selected from the group consisting of coffee and tea, said receptacle having a circular horizontal cross-section and a height that is less than the diameter of said cross-section, said receptacle including an annular side portion non-permeable to water a planar bottom surface having apertures for receiving water, said receptacle containing said beverage material; a vertically flexible lid secured to said annular side portion, and an actuating stick attached to a central portion of said lid for vertically pumping said lid, whereby reciprocating flow of hot water through said apertures and throughout said beverage material is provided for brewing.
Claim 18
Dependent Claim
127 words
Disposable device for use with a cup of hot water for brewing a single cup of a beverage, comprising: a receptacle containing a predetermined quantity of ground beverage material selected from the group consisting of coffee and tea, said receptacle having a circular horizontal cross-section and a height that is less than the diameter of said cross-section, said receptacle including an annular side portion non-permeable to water a planar bottom surface having apertures for receiving water, said receptacle containing said beverage material; a vertically flexible lid secured to said annular side portion, and an actuating stick attached to a central portion of said lid for vertically pumping said lid, whereby reciprocating flow of hot water through said apertures and throughout said beverage material is provided for brewing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-01-26 | 1979-07-28 | 1980-01-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-01-26 | 1983-07-28 | 1984-01-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-01-26 | 1987-07-28 | 1988-01-27 | $7700.00 | Window Closed / Lapsed |