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US4536643A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Food dehydrator
Assignee: ALTERNATIVE PIONEERING SYSTEMS Inc A CORP OF
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Filing: 1983-04-20
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Granted: 1985-08-20
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Expires: 2003-04-20
Abstract
Abstract The present food dehydrator may be substantially cylindrical in shape including a base member, a plurality of stackable trays, and a top. The base member has a first chamber adapted for receipt of a heater element for convection air distribution and a second chamber adapted for receipt of a heating element suitable for forced air distribution. The base member further includes a chamber adapted for receipt of an electric fan motor. The dehydrator is convertible between a convection heating made and a forced air heating made by selectively mounting the convection heating element and the forced air heating element in their respective chambers.
Inventors
- 👤 Chad S. Erickson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:23
CPC Classifications
A; A23; A23B; A23B2/00; A23B2/90; F; F26; F26B; F26B9/00; F26B9/003
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
92 words
A dehydrator comprising: a base member, a convection heating unit, a forced air heating unit including a motor driven fan, a plurality of stackable trays and a top, said base defining a pair of heating element chambers, one of said chambers being adapted for reception of said convection air heating unit, the other of said chambers being adapted for receipt of said forced air heating unit, said base including a chamber for reception of said motor-driven fan, said dehydrator being selectively convertible between a convection heating mode and forced air heating mode.
Claim 2
Dependent Claim
92 words
A dehydrator comprising: a base member, a convection heating unit, a forced air heating unit including a motor driven fan, a plurality of stackable trays and a top, said base defining a pair of heating element chambers, one of said chambers being adapted for reception of said convection air heating unit, the other of said chambers being adapted for receipt of said forced air heating unit, said base including a chamber for reception of said motor-driven fan, said dehydrator being selectively convertible between a convection heating mode and forced air heating mode.
Claim 3
Dependent Claim
101 words
A dehydrator comprising: a heat generating base unit, a plurality of trays stacked on said base unit, a convection heating unit, a forced air heating unit and a top member superimposed on said stacked trays, said base unit including a first chamber and a second chamber, said first chamber being adapted to contain said convection heating unit, said second chamber being adapted to contain said forced air heating unit, said dehydrator being convertible between a convection heating mode and a forced air heating mode by selectively mounting said convection heating unit and said forced air heating unit in their respective chamber.
Claim 4
Dependent Claim
101 words
A dehydrator comprising: a heat generating base unit, a plurality of trays stacked on said base unit, a convection heating unit, a forced air heating unit and a top member superimposed on said stacked trays, said base unit including a first chamber and a second chamber, said first chamber being adapted to contain said convection heating unit, said second chamber being adapted to contain said forced air heating unit, said dehydrator being convertible between a convection heating mode and a forced air heating mode by selectively mounting said convection heating unit and said forced air heating unit in their respective chamber.
Claim 5
Dependent Claim
20 words
The dehydrator of claim 2 wherein said base unit includes a downwardly opening chamber for mounting of a fan motor.
Claim 6
Dependent Claim
24 words
The dehydrator of claim 3 wherein said downwardly opening chamber has an upward side which is enclosed to avoid entrance of fluid from above.
Claim 7
Dependent Claim
30 words
The dehydrator of claim 2 wherein said bottom unit includes an upwardly facing reservoir to collect any spillage and thereby prevent materials from directly contacting the forced air heating unit.
Claim 8
Dependent Claim
40 words
The dehydrator of claim 2 wherein said dehydrator is in the convection flow mode and wherein a plurality of removable spacer means are provided between said top member and an adjacent of said stacked trays to facilitate exhaust of air.
Claim 9
Dependent Claim
11 words
The dehydrator of claim 6 wherein said spacer means comprise clips.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-08-19 | 1989-02-18 | 1989-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-08-19 | 1993-02-18 | 1993-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-08-19 | 1997-02-18 | 1997-08-20 | $7700.00 | Window Closed / Lapsed |