US3696958A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas venting liquid retaining closure
Assignee: US Plywood Champion Papers Inc
•
Filing: 1971-07-22
•
Granted: 1972-10-10
•
Expires: 1991-07-22
Abstract
Abstract A container closure, e.g., a bottle cap, vents gases and/or vapors while retaining liquids. The closure has a liquid retaining diaphragm of film sandwiched tightly between a flexible venting disk and a support disk, all of which are held on the container by a cap body which may have threads, bayonet lugs, or the like. The venting disk has a slit which is blocked by the film. Gas to be vented travels past the film in a kind of labyrinth path, traveling radially outwardly to the edge of the film and then back on the other side of the film radially inwardly to where the slit is.
Inventors
- 👤 Hong Man Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
B; B65; B65D; B65D51/00; B65D51/16; B65D51/1633; B65D51/1644; B65D51/165
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
107 words
A gas venting liquid retaining closure comprising a rigid body member having a first hole in the top thereof; a venting disk of flexible material having a venting cut in approximately the center thereof; a support disk of rigid material with a second hole therein underlying said venting disk; and a liquid seal diaphragm of flexible film material disposed between the said two disks, the diaphragm having a diameter less than the outer diameter of either disk but greater than the diameter of the hole in the body member and located to cover the venting cut in said venting disk, the holes and the cut being aligned.
Claim 2
Dependent Claim
107 words
A gas venting liquid retaining closure comprising a rigid body member having a first hole in the top thereof; a venting disk of flexible material having a venting cut in approximately the center thereof; a support disk of rigid material with a second hole therein underlying said venting disk; and a liquid seal diaphragm of flexible film material disposed between the said two disks, the diaphragm having a diameter less than the outer diameter of either disk but greater than the diameter of the hole in the body member and located to cover the venting cut in said venting disk, the holes and the cut being aligned.
Claim 3
Dependent Claim
27 words
The closure of claim 1 wherein said body member has a flat lid surface in which is said first hole, with depending walls and is generally cup-shaped.
Claim 4
Dependent Claim
23 words
A closure according to claim 1 wherein said support disk hole is approximately half the diameter of the hole in said body member.
Claim 5
Dependent Claim
20 words
A closure according to claim 1 further including a piece of absorbent material held in position over said venting cut.
Claim 6
Dependent Claim
15 words
A package comprising the closure of claim 1 secured to an opening in a container.
Claim 7
Dependent Claim
25 words
An assembly of a cap and bottle comprising a bottle to which is secured a closure comprising a bottle cap made according to claim 1.
References Cited (Backward Citations)
US1857015A
Cited
FR760890A
Cited
US2436291A
Cited
US2460647A
Cited
FR1047004A
Cited
US3059800A
Cited
US3337124A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |