US4190965A — Food dehydrator

Claim 1

Independent Claim 172 words

A food dehydrator comprising: base means including inlet means for receiving a flow of air from the atmosphere, means for positively moving said air flow through the food dehydrator, and means for heating said air flow; a plurality of circular vertically stackable trays; each of said trays including duct means along the circumference of each of trays to permit said air flow to pass from said base means to each of said trays, air inlet means along the circumference of each of said trays to provide that a portion of said air flow moves axially inwardly along each of said trays and air outlet means adjacent the axial center of each of said trays to exhaust at least a portion of said air flow to the atmosphere; and top means adapted for superimposing over the upper most of said trays to substantially close such tray to the atmosphere, said top means including air outlet means for cooperation with the outlet means of said trays to exhaust said air flow to the atmosphere.

Claim 2

Dependent Claim 172 words

A food dehydrator comprising: base means including inlet means for receiving a flow of air from the atmosphere, means for positively moving said air flow through the food dehydrator, and means for heating said air flow; a plurality of circular vertically stackable trays; each of said trays including duct means along the circumference of each of trays to permit said air flow to pass from said base means to each of said trays, air inlet means along the circumference of each of said trays to provide that a portion of said air flow moves axially inwardly along each of said trays and air outlet means adjacent the axial center of each of said trays to exhaust at least a portion of said air flow to the atmosphere; and top means adapted for superimposing over the upper most of said trays to substantially close such tray to the atmosphere, said top means including air outlet means for cooperation with the outlet means of said trays to exhaust said air flow to the atmosphere.

Claim 3

Dependent Claim 18 words

The food dehydrator of claim 1 wherein said trays each include means for insulating around the circumference thereof.

Claim 4

Dependent Claim 19 words

The food dehydrator of claim 2 wherein said insulating means comprise double wall means defining a downwardly opening pocket.

Claim 5

Dependent Claim 43 words

The food dehydrator of claim 1 wherein said tray includes a plurality of spoke-like supports, outer circumferential wall means and inner hub wall means, at least a portion of said spoke-like supports extending from said circumferential wall means to said hub wall means.

Claim 6

Dependent Claim 44 words

The food dehydrator of claim 1 wherein said circumferential walls means include a plurality of spaced, vertically oriented slots which serve as air stream inlets and wherein said hub wall means include a plurality of spaced, vertically oriented slots which serve as airstream outlets.

Claim 7

Dependent Claim 163 words

A circular food dehydrator comprising a base member, a plurality of trays and a top member, said base member including means for heating an air stream, blower means for moving a stream of air through said heating means and into said trays, said trays being stackable on said base member, said trays each including duct means along the circumference thereof for receiving said air stream from said base member and passing a portion of said air across said tray and the remaining portion of said air stream to the next tray, said trays including central duct means which exhaust at least a portion of said air stream, said top member serving to substantially enclose the uppermost of said trays, whereby said blower means feeds a stream of air through said heating means and to the circumference duct means of said trays, said airstream passing uniforming across each of said trays and at least a portion of said air stream exhausting to the atmosphere.

Claim 8

Dependent Claim 163 words

A circular food dehydrator comprising a base member, a plurality of trays and a top member, said base member including means for heating an air stream, blower means for moving a stream of air through said heating means and into said trays, said trays being stackable on said base member, said trays each including duct means along the circumference thereof for receiving said air stream from said base member and passing a portion of said air across said tray and the remaining portion of said air stream to the next tray, said trays including central duct means which exhaust at least a portion of said air stream, said top member serving to substantially enclose the uppermost of said trays, whereby said blower means feeds a stream of air through said heating means and to the circumference duct means of said trays, said airstream passing uniforming across each of said trays and at least a portion of said air stream exhausting to the atmosphere.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1983-03-04	1983-09-03	1984-03-04	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1987-03-04	1987-09-03	1988-03-04	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	1991-03-04	1991-09-03	1992-03-04	$7700.00	Window Closed / Lapsed

Food dehydrator

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