Patent US3695519A successfully refreshed from Google Patents.
US3695519A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hopper assembly for batch disposer
Assignee: Westinghouse Electric Corp
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Filing: 1970-11-06
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Granted: 1972-10-03
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Expires: 1990-11-06
Abstract
Abstract The invention provides a batch feed type food waste disposer having a unitized assembly of its hopper and hopper flange, with these two elements shaped so as to be formed from a non-corrosive sheet material such as stainless steel and rolled together or welded at their abutting edges to form a water-tight joint which includes, at the periphery of the joint, a cooperating opening for the stopper-switch that actuates the food waste disposer to an active comminuting condition.
Inventors
- 👤 Jack E Bebinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:53
CPC Classifications
E; E03; E03C; E03C1/00; E03C1/12; E03C1/26; E03C1/266; E03C1/2665
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
110 words
In a food waste disposer: a hopper of relatively thin, deep-drawing-quality metal having a radially inwardly-directed flange at its upper end; a hopper cap of relatively thin, deep-drawing-quality metal, formed separately from said hopper, and having a radially inwardly-directed flange at its lower end; the inner marginal edge portion of one of said flanges being rolled over the inner marginal edge portion of the other flange to permanently attach said hopper and hopper cap together in water-tight sealing relation and to form a rolled inner rim defining the boundaries of a preselected-shape opening of restricted cross-sectional area relative to the cross-sectional area of the remainder of said cap and hopper.
Claim 2
Dependent Claim
110 words
In a food waste disposer: a hopper of relatively thin, deep-drawing-quality metal having a radially inwardly-directed flange at its upper end; a hopper cap of relatively thin, deep-drawing-quality metal, formed separately from said hopper, and having a radially inwardly-directed flange at its lower end; the inner marginal edge portion of one of said flanges being rolled over the inner marginal edge portion of the other flange to permanently attach said hopper and hopper cap together in water-tight sealing relation and to form a rolled inner rim defining the boundaries of a preselected-shape opening of restricted cross-sectional area relative to the cross-sectional area of the remainder of said cap and hopper.
Claim 3
Dependent Claim
34 words
In a food disposer according to claim 1 wherein: said flange of said cap is rolled over said inner marginal edge portion of said flange of said hopper to form said rolled inner rim.
Claim 4
Dependent Claim
34 words
In a food waste disposer according to claim 1 including: a stopper means for said opening; said stopper means includes a portion thereof having a shape complementary to the preselected shape of said opening.
Claim 5
Dependent Claim
19 words
In a food waste disposer according to claim 3 wherein: said preselected shape is that of a flattened oval.
Claim 6
Dependent Claim
21 words
In a food waste disposer according to claim 1 wherein: said metal of said hopper and hopper cap is stainless steel.
Claim 7
Dependent Claim
15 words
In a food waste disposer according to claim 1 wherein: said hopper is generally bell-shaped.
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |