Patent US3638826A successfully refreshed from Google Patents.
US3638826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vessel with stabilizer
Assignee: EIDP Inc
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Filing: 1970-01-26
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Granted: 1972-02-01
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Expires: 1990-01-26
Abstract
Abstract A vessel with a convex bottom having adhered to said convex bottom a stabilizing member of a low-density rigid plastic foam.
Inventors
- 👤 Arthur Frederick Barker
- 👤 Edward John Nack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:43
CPC Classifications
B; B65; B65D; B65D25/00; B65D25/20
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
118 words
An apparatus comprising in combination a cylindrical metal vessel having an outwardly convex bottom and a bottom stabilizing member of a low-density rigid plastic foam the length of the periphery of said stabilizer being from 80 to 90 percent of the length of the periphery of the vessel said stabilizer having a concave upper surface generally conforming with and adhered to the convex bottom of said vessel and a planar lower surface the plane of which is generally perpendicular to the longitudinal axis of said vessel and the center of which plane intersects said axis at the level of the lowest metal portion of the vessel when the vessel is upright, said stabilizer having also a center aperture.
Claim 2
Independent Claim
118 words
An apparatus comprising in combination a cylindrical metal vessel having an outwardly convex bottom and a bottom stabilizing member of a low-density rigid plastic foam the length of the periphery of said stabilizer being from 80 to 90 percent of the length of the periphery of the vessel said stabilizer having a concave upper surface generally conforming with and adhered to the convex bottom of said vessel and a planar lower surface the plane of which is generally perpendicular to the longitudinal axis of said vessel and the center of which plane intersects said axis at the level of the lowest metal portion of the vessel when the vessel is upright, said stabilizer having also a center aperture.
Claim 3
Dependent Claim
13 words
An apparatus according to claim 1 wherein the bottom stabilizing member is polystyrene.
Claim 4
Dependent Claim
13 words
An apparatus according to claim 1 wherein the bottom stabilizing member is polyurethane.
Claim 5
Dependent Claim
32 words
An apparatus according to claim 1 wherein the convex bottom of the vessel has support protrusions and the lower surface of the stabilizer is in a plane defined by said support protrusions.
Claim 6
Dependent Claim
13 words
An apparatus according to claim 4 wherein the bottom stabilizing member is polystyrene.
Claim 7
Dependent Claim
13 words
An apparatus according to claim 4 wherein the bottom stabilizing member is polyurethane.
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) | 1975-01-31 | 1975-08-02 | 1976-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-31 | 1979-08-02 | 1980-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-31 | 1983-08-02 | 1984-02-01 | $7700.00 | Window Closed / Lapsed |