Patent US27930A successfully refreshed from Google Patents.
Patent US3915331A successfully refreshed from Google Patents.
US3915331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Non-spill cover
Assignee: Individual
•
Filing: 1973-12-05
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Granted: 1975-10-28
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Expires: 1993-12-05
Abstract
Abstract A liquid container has a lid with a generally planar top provided about its periphery with liquid outlet flap valves which serve to stop liquid which is splashing around in the container from being spilled, but allowing liquid to be drawn outwardly from the container on the application of suction to open the valves.
Inventors
- 👤 Bert Russel Chenault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:40
CPC Classifications
B; B65; B65D; B65D47/00; B65D47/04; B65D47/043; A; A47; A47G; A47G19/00; A47G19/22; A47G19/2205; A47G19/2266; A47G19/2272; B65D47/06; B65D47/20; B65D47/2018; B65D47/2031
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
142 words
In or for a liquid container, a lid comprising a generally planar top, a periphery to said top, attachment means integral with the top and depending from said periphery and cooperable with the container to secure the lid thereto, and a plurality of flap valves formed in the top and spaced about the periphery thereof adjacent the latter, each of said flap valves normally lying in a closed position in which it forms a continuation of the remainder of the top, but being operable outwardly of the top by mouth suction applied thereto for the withdrawal of liquid from the container and including chamfered edges to each flap valve and a valve seat in said top, such seat having correspondingly chamfered edges to cooperate with said edges of said flap valves so that the latter cannot move inwardly of the said top.
Claim 2
Dependent Claim
142 words
In or for a liquid container, a lid comprising a generally planar top, a periphery to said top, attachment means integral with the top and depending from said periphery and cooperable with the container to secure the lid thereto, and a plurality of flap valves formed in the top and spaced about the periphery thereof adjacent the latter, each of said flap valves normally lying in a closed position in which it forms a continuation of the remainder of the top, but being operable outwardly of the top by mouth suction applied thereto for the withdrawal of liquid from the container and including chamfered edges to each flap valve and a valve seat in said top, such seat having correspondingly chamfered edges to cooperate with said edges of said flap valves so that the latter cannot move inwardly of the said top.
Claim 3
Dependent Claim
36 words
The lid specified in claim 1, wherein the lid is formed of a flexible plastics material and each of said flap valves is integral with the top and has a hinge edge remote from said periphery.
Claim 4
Dependent Claim
34 words
The lid specified in claim 1 and further including in said top an air inlet valve which, unlike the said flap valves, does not open outwardly of the top, but only opens inwardly thereof.
Claim 5
Dependent Claim
17 words
A lid as claimed in claim 1, and including a skirt depending from the generally planar top.
Claim 6
Dependent Claim
35 words
A lid as claimed in claim 4, wherein said attachment means comprise a screw thread formed on the skirt and wherein said liquid container further comprises a screw thread co-operable with that on said skirt.
Claim 7
Dependent Claim
41 words
A lid as claimed in claim 4, wherein said attachment means comprises a rib formed on said skirt and further including a ridge formed on the liquid container and co-operable with that of said skirt to form a spring detent attachment.
References Cited (Backward Citations)
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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) | 1978-10-27 | 1979-04-28 | 1979-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-27 | 1983-04-28 | 1983-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-27 | 1987-04-28 | 1987-10-28 | $7700.00 | Window Closed / Lapsed |