US3672114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for evacuating containers
Assignee: Individual
•
Filing: 1971-01-11
•
Granted: 1972-06-27
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Expires: 1991-01-11
Abstract
Abstract A manually-actuated pump is attached to the lid of a container for substances such as ground coffee, which deteriorate in the presence of air. The pump consists of a cylindrical bellows which can be compressed toward the lid and extended. A first flap-type check valve is installed on said lid and a second flap-type check valve is installed on a closure on the outer end of the bellows. A seal cap fits over the second valve to maintain the vacuum once the container has been evacuated.
Inventors
- 👤 Alvin H Sacks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:40
CPC Classifications
B; B05; B05B; B05B11/00; B05B11/01; B05B11/10; B05B11/1028; B05B11/1035; B65; B65B; B65B31/00; B65B31/04; B65B31/046; B65B31/047; B65D; B65D81/00; B65D81/18; B65D81/20; B65D81/2007; B65D81/2038; F; F04; F04B; F04B45/00; F04B45/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
79 words
A device for evacuating a container comprising a top shaped for detachable sealing engagement with the container to be evacuated and formed with a first aperture, a flexible hollow tube fixed at one end to said top, a closUre for the opposite end of said tube formed with a second aperture, a first check valve for said first aperture, a second check valve for said second aperture, and detachable means external to said closure for sealing said second aperture.
Claim 2
Independent Claim
79 words
A device for evacuating a container comprising a top shaped for detachable sealing engagement with the container to be evacuated and formed with a first aperture, a flexible hollow tube fixed at one end to said top, a closUre for the opposite end of said tube formed with a second aperture, a first check valve for said first aperture, a second check valve for said second aperture, and detachable means external to said closure for sealing said second aperture.
Claim 3
Dependent Claim
41 words
A device according to claim 1 in which said means comprises a nipple on the exterior of said closure surrounding said second aperture and enclosing said second check valve and a cap detachably fitting on said nipple with an air-tight fit.
Claim 4
Dependent Claim
29 words
A device according to claim 1 in which said valves comprise flaps of bendable material which open and close said apertures as said tube is manually compressed and extended.
Claim 5
Dependent Claim
47 words
A device according to claim 1 in which said top is formed with a cylindrical first flange to which said one end of said tube is attached and said closure is formed with a cylindrical second flange to which said opposite end of said tube is attached.
References Cited (Backward Citations)
US1079450A
Cited
US2890810A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-27 | 1975-12-27 | 1976-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-27 | 1979-12-27 | 1980-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-27 | 1983-12-27 | 1984-06-27 | $7700.00 | Window Closed / Lapsed |