US4401224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Feeding bottle for infants
Assignee: Individual
•
Filing: 1979-09-28
•
Granted: 1983-08-30
•
Expires: 1999-09-28
Abstract
Abstract An infant's feeding bottle employing a valve to assure approximately atmospheric pressure within the bottle during feeding, the valve and valve stem being of like material and of simple unitary construction whereby to avoid numerous problems such as rust, sticking, and development of unsanitary conditions associated with other valves under like conditions of use.
Inventors
- 👤 Ferdinand Alonso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:13
CPC Classifications
F; F16; F16K; F16K15/00; F16K15/14; F16K15/148; A; A61; A61J; A61J9/00; A61J9/04; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7879; Y10T137/7888; Y10T137/789
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
137 words
A feeding bottle assembly comprising a bottle having a bottom with a recessed central portion, said recessed central portion having a central passageway and at least one vent aperture to one side of said central passageway, a normally closed valve assembly including a valve seat encircling said central passageway and vent aperture, and a unitary valve and valve stem of like material installed in said recessed area with said valve engaging said valve seat and said stem secured in said central passageway under tension to normally urge said valve into such engagement with said valve seat and with just sufficient force to enable a differential pressure, created across said valve during feeding of an infant from said bottle, to momentarily lift said valve from engagement with said valve seat to admit atmosphere and minimize such differential pressure.
Claim 2
Dependent Claim
137 words
A feeding bottle assembly comprising a bottle having a bottom with a recessed central portion, said recessed central portion having a central passageway and at least one vent aperture to one side of said central passageway, a normally closed valve assembly including a valve seat encircling said central passageway and vent aperture, and a unitary valve and valve stem of like material installed in said recessed area with said valve engaging said valve seat and said stem secured in said central passageway under tension to normally urge said valve into such engagement with said valve seat and with just sufficient force to enable a differential pressure, created across said valve during feeding of an infant from said bottle, to momentarily lift said valve from engagement with said valve seat to admit atmosphere and minimize such differential pressure.
Claim 3
Dependent Claim
28 words
A feeding bottle in accordance with claim 1, characterized by said valve being in the form of a disc stressed by said stem into a slightly concave configuration.
Claim 4
Dependent Claim
21 words
A feeding bottle in accordance with claim 1, characterized by said unitary valve and stem being of flexible and stretchable material.
Claim 5
Dependent Claim
45 words
A feeding bottle in accordance with claim 1, characterized by said recessed area comprising a shallow cup installed in the bottom of said bottle and having a rim to function as a valve seat, and said valve spanning said cup in contact with said seat.
Claim 6
Dependent Claim
37 words
A feeding bottle in accordance with claim 4, characterized by a protective guard means for said valve in spaced relationship to the bottom of said bottle and open at its rim to admit air to said valve.
Claim 7
Dependent Claim
49 words
A feeding bottle assembly in accordance with claim 1, characterized by said bottle including a body portion, and a bottom portion removably secured to said body portion and including said valve assembly to facilitate access to both the intake and discharge ends of said valve assembly for cleaning purposes.
Claim 8
Dependent Claim
42 words
A feeding bottle assembly in accordance with claim 6, characterized by said bottom portion having a circular rib surrounding said central passageway and vent opening to constitute said valve seat, and said valve comprising a disc type valve spanning said circular rib.
Claim 9
Dependent Claim
24 words
A feeding bottle assembly in accordance with claim 7, characterized by said valve and valve stem being of material which is flexible and stretchable.
Claim 10
Dependent Claim
31 words
A feeding bottle in accordance with claim 8, characterized by said valve stem including an inverse truncated intermediate portion having a maximum diameter greater than the diameter of said central passageway.
Claim 11
Dependent Claim
36 words
A feeding bottle in accordance with claim 9, characterized by said tension being just sufficient to allow opening of said valve in response to differential pressure developed across said valve during normal feeding from said bottle.
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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) | 1986-08-29 | 1987-02-28 | 1987-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-29 | 1991-02-28 | 1991-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-29 | 1995-02-28 | 1995-08-30 | $7700.00 | Window Closed / Lapsed |