Patent US3815646A successfully refreshed from Google Patents.
US3815646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inflatable funnel
Assignee: Individual
•
Filing: 1973-01-29
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Granted: 1974-06-11
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Expires: 1993-01-29
Abstract
Abstract An inflatable funnel, having inner and outer funnel shaped members, formed of flexible, resilient sheet material sealed at their tops and bottoms leaving a space therebetween for the insertion of air to inflate the funnel into semi-rigid form. The deflated funnel folds to very small dimensions, and while inflated the funnel is sufficiently rigid for directing fluid from one container to another out its smaller end.
Inventors
- 👤 D Coakley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:40
CPC Classifications
B; B67; B67C; B67C11/00; B67C11/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
86 words
An inflatable funnel comprising an inner funnel shaped member formed of a foldable, air and liquid tight, soft, resilient Filmlike material; an outer funnel shaped member telescoped over said inner member and formed of a foldable, air and liquid tight, soft, resilient, film-like material; said inner and outer members being sealed together to form an air-tight chamber therebetween which permits said space to be filled with air to inflate said unit into an essentially semi-rigid funnel, and means for introducing and withdrawing air from said chamber.
Claim 2
Dependent Claim
86 words
An inflatable funnel comprising an inner funnel shaped member formed of a foldable, air and liquid tight, soft, resilient Filmlike material; an outer funnel shaped member telescoped over said inner member and formed of a foldable, air and liquid tight, soft, resilient, film-like material; said inner and outer members being sealed together to form an air-tight chamber therebetween which permits said space to be filled with air to inflate said unit into an essentially semi-rigid funnel, and means for introducing and withdrawing air from said chamber.
Claim 3
Dependent Claim
38 words
An inflatable funnel according to claim 1 wherein said inner and outer funnel shaped members include a large truncated cone shape and a smaller truncated cone shape secured to the small end of said large truncated cone shape.
Claim 4
Dependent Claim
18 words
An inflatable funnel according to claim 1 wherein said inner and outer funnel shaped members are truncated cones.
Claim 5
Dependent Claim
15 words
An inflatable funnel according to claim 1 wherein said film-like material is a synthetic plastic.
Claim 6
Dependent Claim
28 words
An inflatable funnel according to claim 1 wherein the outlet of said funnel is directed at an angle to a perpendicular axis through the inlet of said funnel.
Claim 7
Dependent Claim
38 words
An inflatable funnel according to claim 1 wherein said inner and outer funnel shaped members are formed of planar sheet material rolled into a circle with the adjoining edges sealed together in an air and liquid tight seal.
Claim 8
Dependent Claim
27 words
An inflatable funnel according to claim 1 wherein said inner and outer members are sealed together at their tops and bottoms forming an air tight chamber therebetween.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |