Patent US3947251A successfully refreshed from Google Patents.
US3947251A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laboratory container
Assignee: Individual
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Filing: 1974-10-16
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Granted: 1976-03-30
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Expires: 1994-10-16
Abstract
Abstract A laboratory container having an open top closed by a funnel in the container to direct liquid into the same with the funnel carrying a structure to prevent liquid from spilling out through the funnel when the container and funnel are inverted. A valve communicates with the interior of the container to discharge liquid therefrom when the container is inverted.
Inventors
- 👤 Babington A. Quame
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 04:38
CPC Classifications
B; B01; B01L; B01L3/00; B01L3/50; B01L3/508; A; A61; A61B; A61B10/00; A61B10/0045; A61B10/007; G; G01; G01N; G01N35/00; G01N35/02; G01N35/021
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
For use in the testing of liquid samples, a container having an open top, funnel means closing said open top of said container for directing liquid into the interior of the latter, means carried by said funnel means for preventing the contents of the container from spilling out through said funnel means when said container and funnel means therewith are inverted, valve means carried by said container and communicating with the interior thereof for discharging liquid from the interior of the container when the letter is inverted and means for admitting air into the interior of the container beneath the funnel means.
Claim 2
Dependent Claim
102 words
For use in the testing of liquid samples, a container having an open top, funnel means closing said open top of said container for directing liquid into the interior of the latter, means carried by said funnel means for preventing the contents of the container from spilling out through said funnel means when said container and funnel means therewith are inverted, valve means carried by said container and communicating with the interior thereof for discharging liquid from the interior of the container when the letter is inverted and means for admitting air into the interior of the container beneath the funnel means.
Claim 3
Dependent Claim
39 words
The combination of claim 1 and wherein said valve means is located adjacent the top of the container so that when the latter is inverted said valve means will discharge liquid from the lowermost portion of the inverted container.
Claim 4
Dependent Claim
33 words
The combination of claim 2 where said means for admitting air comprises a tubular means communicating with the exterior of the container and with the interior of the container beneath said funnel means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-30 | 1979-09-29 | 1980-03-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-30 | 1983-09-29 | 1984-03-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-30 | 1987-09-29 | 1988-03-30 | $7700.00 | Window Closed / Lapsed |