Patent US3989158A successfully refreshed from Google Patents.
US3989158A
Expired / Lapsed
US
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Self-draining saucer
Assignee: Mobil Oil AS
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Filing: 1974-12-03
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Granted: 1976-11-02
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Expires: 1994-12-03
Abstract
Abstract A self-draining saucer is provided by combination of two concave discs (saucer shape). The lower disc has a central well defined by a depressed central bottom and circular wall. The upper disc is formed such that its bottom convex surface generally follows the concave upper surface of the lower disc. A vertical surface on the under side of the upper disc frictionally engages a similar surface inside the lower disc to retain the pair. Holes are provided through the top disc above the well in the lower disc for drainage of spilled liquid into the well. The combination is easily formed of thermoplastic resin and assembled on standard thermoforming machinery.
Inventors
- 👤 John Florian
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:52
CPC Classifications
A; A47; A47G; A47G19/00; A47G19/22; A47G19/2283; B; B29; B29C; B29C51/00; B29C51/006
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
153 words
A self-draining saucer or the like composed of two discs of like upwardly concave shape 1 of substantially equal diameter and coacting to form a unitary structure having an internal reservoir to receive liquid and means to drain liquid from the upper surface thereof into said reservoir, said saucer comprising the combination of: a. an upper disc having a concentric wall on the bottom surface thereof and at least one perforation through the bottom of said disc; and b. a lower disc having a circular concentric well defined by a bottom surface spaced downwardly from the concave surface of said lower disc and a circular wall on the upper face of said lower disc, said circular wall having an internal diameter substantially equal to the external diameter of said wall on the bottom of said upper disc and adapted to engage therewith, whereby the frictional engagement of said circular walls retains the combination.
Claim 2
Dependent Claim
153 words
A self-draining saucer or the like composed of two discs of like upwardly concave shape 1 of substantially equal diameter and coacting to form a unitary structure having an internal reservoir to receive liquid and means to drain liquid from the upper surface thereof into said reservoir, said saucer comprising the combination of: a. an upper disc having a concentric wall on the bottom surface thereof and at least one perforation through the bottom of said disc; and b. a lower disc having a circular concentric well defined by a bottom surface spaced downwardly from the concave surface of said lower disc and a circular wall on the upper face of said lower disc, said circular wall having an internal diameter substantially equal to the external diameter of said wall on the bottom of said upper disc and adapted to engage therewith, whereby the frictional engagement of said circular walls retains the combination.
Claim 3
Dependent Claim
11 words
A saucer according to claim 1 composed of thermoformed polystyrene foam.
Claim 4
Dependent Claim
38 words
An article of manufacture according to claim 1 having nodes on the under side of the upper disc adapted to contact the upper surface of the lower disc and thereby maintain a predetermined depth of said internal reservoir.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |