Patent US5397879A successfully refreshed from Google Patents.
US5397879A
Expired / Lapsed
US
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Microwave corn popper device and method
Assignee: National Presto Industries Inc
•
Filing: 1993-11-17
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Granted: 1995-03-14
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Expires: 2013-11-17
Abstract
Abstract A microwave corn popper device is provided including a rigid bowl having a bottom portion and an inclined side extending upward from the bottom portion and terminating at a top portion. A microwave susceptor is separate from the bowl and disposed within the bowl adjacent the bottom portion to receive kernels of corn. The susceptor becomes hot in the presence of microwave energy. A saucer-shaped metal plate is disposed beneath the susceptor at a predetermined spaced apart distance. The metal plate is part of a support assembly which is separately mountable to the bowl.
Inventors
- 👤 Richard L. Geissler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:22
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/647; H05B6/6491; H05B6/6494; A; A47; A47J; A47J36/00; A47J36/02; A47J36/027; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
126 words
A microwave corn popper device comprising: a bowl construction including: a closed bottom portion; and an inclined side extending upwardly from the bottom portion and terminating at a top portion, the bottom portion and the inclined side defining an enclosed bowl shape; a microwave susceptor disposed within the bowl construction adjacent the bottom portion to receive kernels of corn, the susceptor becoming hot in the presence of microwave energy; and a metal plate mounted to the bowl construction and disposed beneath the susceptor at a predetermined spaced apart distance, the metal plate including a portion disposed directly below the susceptor, the metal plate including a central planar portion, and an inclined outer peripheral portion disposed upwardly out of a plane defined by the central planar portion.
Claim 2
Dependent Claim
126 words
A microwave corn popper device comprising: a bowl construction including: a closed bottom portion; and an inclined side extending upwardly from the bottom portion and terminating at a top portion, the bottom portion and the inclined side defining an enclosed bowl shape; a microwave susceptor disposed within the bowl construction adjacent the bottom portion to receive kernels of corn, the susceptor becoming hot in the presence of microwave energy; and a metal plate mounted to the bowl construction and disposed beneath the susceptor at a predetermined spaced apart distance, the metal plate including a portion disposed directly below the susceptor, the metal plate including a central planar portion, and an inclined outer peripheral portion disposed upwardly out of a plane defined by the central planar portion.
Claim 3
Dependent Claim
19 words
The popper device of claim 1, wherein the outer peripheral portion of the metal plate defines a frusto-conical shape.
Claim 4
Dependent Claim
20 words
The popper device of claim 1, wherein the bottom portion and the inclined side of the bowl construction comprise plastic.
Claim 5
Dependent Claim
16 words
The popper device of claim 1, wherein the microwave susceptor is separate from the bowl construction.
Claim 6
Dependent Claim
66 words
The popper device of claim 4, wherein the bowl construction includes a recess adjacent the bottom portion sized to receive the separate microwave susceptor, and wherein the bowl construction further includes a support rib, and a bottom inside surface, the support rib extending upwardly from the bottom inside surface and positioned to support the microwave susceptor at a spaced apart distance from the bottom inside surface.
Claim 7
Dependent Claim
18 words
The popper device of claim 5, wherein the microwave susceptor includes a dead zone adjacent the support rib.
Claim 8
Dependent Claim
16 words
The popper device of claim 4, further comprising a finger tab extending from the microwave susceptor.
Claim 9
Dependent Claim
14 words
The popper device of claim 4, wherein the microwave susceptor has a concave shape.
Claim 10
Dependent Claim
73 words
The popper device of claim 4, wherein the bowl construction includes a bottom inside surface and a support rib extending upwardly from the bottom inside surface, the support rib positioned to support the microwave susceptor at a spaced apart distance from the inside surface, the microwave susceptor having a concave shape with a central planar portion, the microwave susceptor having a dead zone adjacent to the support rib in the central planar portion.
Claim 11
Dependent Claim
54 words
The popper device of claim 1, wherein the microwave susceptor is positioned at a spaced apart distance from the central planar portion of the metal plate such that a layer of kernels supported by the microwave susceptor includes a portion which is at about 1.21 inches from the metal plate in a vertical direction.
Claim 12
Dependent Claim
61 words
The popper device of claim 1, wherein the bowl construction further comprises a support assembly including the metal plate for supporting the bottom portion of the bowl construction at a spaced apart distance from a horizontal surface, and wherein the bowl construction further comprises a twist-lock arrangement for selectively mounting the support assembly to the bottom portion of the bowl construction.
Claim 13
Dependent Claim
36 words
The popper device of claim 11, wherein the support assembly includes two mating halves, and a snap arrangement for snapping the mating halves to a locked position, the metal plate disposed between the two mating halves.
Claim 14
Dependent Claim
28 words
The popper device of claim 12, wherein each mating half includes a bump, each bump being oppositely disposed between the respective halves to each engage the metal plate.
Claim 15
Dependent Claim
18 words
The popper device of claim 11, wherein the twist-lock arrangement includes a stop to indicate the locked position.
Claim 16
Dependent Claim
150 words
A microwave corn popper device comprising: a bowl construction including: a closed bottom portion; an inclined side integral with the bottom portion and extending upwardly from the bottom portion and terminating at a top portion, the bottom portion and the inclined side defining an enclosed bowl shape; and a support assembly for supporting the bottom portion of the bowl construction at a spaced apart distance from a horizontal surface, the support assembly including two mating halves mounted to one another; a microwave susceptor disposed within the bowl construction adjacent the bottom portion to receive kernels of corn, the susceptor becoming hot in the presence of microwave energy; and a metal plate mounted to the support assembly and disposed beneath the susceptor at a predetermined spaced apart distance, the metal plate including a portion disposed directly below the susceptor, the metal plate disposed between the mating halves of the support assembly.
Claim 17
Dependent Claim
150 words
A microwave corn popper device comprising: a bowl construction including: a closed bottom portion; an inclined side integral with the bottom portion and extending upwardly from the bottom portion and terminating at a top portion, the bottom portion and the inclined side defining an enclosed bowl shape; and a support assembly for supporting the bottom portion of the bowl construction at a spaced apart distance from a horizontal surface, the support assembly including two mating halves mounted to one another; a microwave susceptor disposed within the bowl construction adjacent the bottom portion to receive kernels of corn, the susceptor becoming hot in the presence of microwave energy; and a metal plate mounted to the support assembly and disposed beneath the susceptor at a predetermined spaced apart distance, the metal plate including a portion disposed directly below the susceptor, the metal plate disposed between the mating halves of the support assembly.
Claim 18
Dependent Claim
23 words
The popper device of claim 15, wherein the bottom portion, the inclined side, and the support assembly of the bowl construction comprise plastic.
Claim 19
Dependent Claim
16 words
The popper device of claim 16, wherein the microwave susceptor is separate from the bowl construction.
Claim 20
Dependent Claim
66 words
The popper device of claim 17, wherein the bowl construction includes a recess adjacent the bottom portion sized to receive the separate microwave susceptor, and wherein the bowl construction further includes a support rib, and a bottom inside surface, the support rib extending upwardly from the bottom inside surface and positioned to support the microwave susceptor at a spaced apart distance from the bottom inside surface.
Claim 21
Dependent Claim
18 words
The popper device of claim 18, wherein the microwave susceptor includes a dead zone adjacent the support rib.
Claim 22
Dependent Claim
20 words
The popper device of claim 15, wherein the support assembly includes a snap arrangement for snapping the mating halves together.
Claim 23
Dependent Claim
28 words
The popper device of claim 15, wherein each mating half includes a bump, each bump being oppositely disposed between the respective halves to each engage the metal plate.
Claim 24
Dependent Claim
25 words
The popper device of claim 15, further comprising a twist-lock arrangement for selectively mounting the support assembly to the bottom portion of the bowl construction.
Claim 25
Dependent Claim
18 words
The popper device of claim 22, wherein the twist-lock arrangement includes a stop to indicate the locked position.
Claim 26
Dependent Claim
108 words
A microwave corn popper device comprising: an enclosed plastic bowl including: a bottom portion, wherein the bottom portion of the bowl includes a recessed region with a bottom inside surface and a support rib extending upwardly from the bottom inside surface; and an inclined side extending upwardly and outwardly away from the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein the susceptor is positioned in the recessed region and separated from the bottom inside surface by the support rib.
Claim 27
Dependent Claim
108 words
A microwave corn popper device comprising: an enclosed plastic bowl including: a bottom portion, wherein the bottom portion of the bowl includes a recessed region with a bottom inside surface and a support rib extending upwardly from the bottom inside surface; and an inclined side extending upwardly and outwardly away from the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein the susceptor is positioned in the recessed region and separated from the bottom inside surface by the support rib.
Claim 28
Dependent Claim
18 words
The popper device of claim 24, wherein the susceptor includes a dead zone vertically above the support rib.
Claim 29
Dependent Claim
14 words
The popper device of claim 24, wherein the microwave susceptor has a concave shape.
Claim 30
Dependent Claim
16 words
The popper device of claim 24, further comprising a finger tab extending from the microwave susceptor.
Claim 31
Dependent Claim
112 words
A microwave corn popper device comprising: an enclosed plastic bowl including: a bottom portion, wherein the bottom portion of the bowl includes a bottom inside surface and a support rib extending upwardly from the bottom inside surface; and an inclined side extending upwardly from the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein a central portion of the susceptor is separated from the bottom inside surface by the support rib, and wherein the susceptor includes a dead zone vertically above the support rib.
Claim 32
Dependent Claim
112 words
A microwave corn popper device comprising: an enclosed plastic bowl including: a bottom portion, wherein the bottom portion of the bowl includes a bottom inside surface and a support rib extending upwardly from the bottom inside surface; and an inclined side extending upwardly from the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein a central portion of the susceptor is separated from the bottom inside surface by the support rib, and wherein the susceptor includes a dead zone vertically above the support rib.
Claim 33
Dependent Claim
14 words
The popper device of claim 28, wherein the microwave susceptor has a concave shape.
Claim 34
Dependent Claim
16 words
The popper device of claim 28, further comprising a finger tab extending from the microwave susceptor.
Claim 35
Dependent Claim
146 words
A microwave corn popper device comprising: an enclosed bowl including: a bottom portion, wherein the bottom portion includes a recessed region with a base and a side extending generally upwardly from an outer periphery of the base; and an inclined side extending upwardly and outwardly away from the side of the recessed region of the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein the susceptor includes a central portion and an outer peripheral edge, the susceptor positioned in the recessed region, wherein the outer peripheral edge of the susceptor is adjacent to the side of the recessed region, and the central portion of the susceptor is supported by a portion of the base of the recessed region.
Claim 36
Dependent Claim
146 words
A microwave corn popper device comprising: an enclosed bowl including: a bottom portion, wherein the bottom portion includes a recessed region with a base and a side extending generally upwardly from an outer periphery of the base; and an inclined side extending upwardly and outwardly away from the side of the recessed region of the bottom portion and terminating at a top portion; and a separate susceptor positioned in the bowl adjacent the bottom portion for receiving unpopped kernels of corn, the susceptor becoming hot in the presence of microwave energy, wherein the susceptor includes a central portion and an outer peripheral edge, the susceptor positioned in the recessed region, wherein the outer peripheral edge of the susceptor is adjacent to the side of the recessed region, and the central portion of the susceptor is supported by a portion of the base of the recessed region.
Claim 37
Dependent Claim
33 words
The popper device of claim 31, wherein the base of the recessed region includes at least one support rib for spacing the central portion of the susceptor from a remainder of the base.
Claim 38
Dependent Claim
34 words
The popper device of claim 32, wherein the base of the recessed region includes at least two support ribs, a first rib centrally located, and a second spaced from and surrounding the first rib.
Claim 39
Dependent Claim
43 words
The popper device of claim 31, wherein the outer peripheral edge of the susceptor defines a generally arcuate portion defined by a radius relative to a central axis of the susceptor, and wherein the arcuate portion engages the side of the recessed region.
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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) | 1998-03-13 | 1998-09-12 | 1999-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-03-13 | 2002-09-12 | 2003-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-03-13 | 2006-09-12 | 2007-03-14 | $7700.00 | Window Closed / Lapsed |