Patent US4795873A successfully refreshed from Google Patents.
US4795873A
Expired / Lapsed
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Light enhancing means for microwave utensils
Assignee: Raytheon Co
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Filing: 1981-08-03
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Granted: 1989-01-03
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Expires: 2001-08-03
Abstract
Abstract A utensil for supporting microwave heatable material in a microwave oven is provided with a microwave responsive illuminator including a light source connected to a suitable antenna for receiving microwave energy and directing it to the light source. The oven has an energy distributor disposed for varying localized field intensities of microwave energy in the oven to promote uniform cooking of the heatable material. When the localized field intensity of the microwave energy adjacent the antenna rises periodically above a predetermined value, the antenna receives sufficient energy to cause illumination of the light source. When the localized field intensity falls below the predetermined value, the antenna receives insufficient energy for maintaining the illumination and the light source is extinguished. Thus, the energy distributor, in addition to promoting uniform cooking of the heatable material, also causes intermittent illumination or flashing of the light source to enhance attractiveness of the utensil. Further, the use of an antenna to receive varying amounts of microwave energy from the oven eliminates the requirement for sophisticated auxiliary circuitry to produce intermittent illumination or flashing of the light source.
Inventors
- 👤 George Freedman
- 👤 Robert F. Bowen
- 👤 Wesley W. Teich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:21
CPC Classifications
A; A47; A47J; A47J36/00; A47J36/02; A47J36/027; Y; Y10; Y10S; Y10S99/00; Y10S99/14
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
81 words
A microwave utensil comprising: food supporting means insertable into a microwave oven for supporting food to be processed by microwave radiation in said oven, the food supporting means including container means having side walls disposed for confining said food; and means attached to the supporting means for producing light in response to said microwave radiation, the light producing means including antenna means dimensioned for producing flashing operation of said light producing means while exposed to said microwave radiation in said oven.
Claim 2
Dependent Claim
81 words
A microwave utensil comprising: food supporting means insertable into a microwave oven for supporting food to be processed by microwave radiation in said oven, the food supporting means including container means having side walls disposed for confining said food; and means attached to the supporting means for producing light in response to said microwave radiation, the light producing means including antenna means dimensioned for producing flashing operation of said light producing means while exposed to said microwave radiation in said oven.
Claim 3
Dependent Claim
41 words
A microwave utensil as set forth in claim 1 wherein the light producing means includes a light source disposed adjacent a decorative portion of the supporting means for directing light thereon in response to microwave energy received from the antenna means.
Claim 4
Dependent Claim
40 words
A microwave utensil as set forth in claim 1 wherein the light producing means includes a plurality of light source means connected to said antenna means and disposed in spaced relationship on the supporting means for producing an activity effect.
Claim 5
Dependent Claim
115 words
A microwave utensil for use in a microwave oven comprising a material processing cavity disposed for receiving microwave radiation therein, and energy distributor means disposed for varying with time the electric intensity of the microwave radiation in localized portions of the cavity, said microwave utensil comprising: material support means insertable into said oven for processing said material by microwave radiation in said cavity, and illuminating means including predimensioned antenna means secured to the material support means and responsive to the electric intensity of the microwave radiation in the adjacent localized portion of the cavity for producing flashes of light in response to said variations in said electric intensity in said localized portions of the cavity.
Claim 6
Dependent Claim
115 words
A microwave utensil for use in a microwave oven comprising a material processing cavity disposed for receiving microwave radiation therein, and energy distributor means disposed for varying with time the electric intensity of the microwave radiation in localized portions of the cavity, said microwave utensil comprising: material support means insertable into said oven for processing said material by microwave radiation in said cavity, and illuminating means including predimensioned antenna means secured to the material support means and responsive to the electric intensity of the microwave radiation in the adjacent localized portion of the cavity for producing flashes of light in response to said variations in said electric intensity in said localized portions of the cavity.
Claim 7
Dependent Claim
30 words
A microwave utensil as set forth in claim 4 wherein the energy distributor means is rotatably mounted in the cavity for cyclically varying the standing wave modes of microwave radiation.
Claim 8
Dependent Claim
47 words
A microwave utensil as set forth in claim 4 wherein the illuminating means includes a light source secured to a selected portion of the support means, and said antenna means is connected to the light source for periodically receiving sufficient microwave radiation to activate the light source.
Claim 9
Dependent Claim
48 words
A microwave utensil as set forth in claim 4 wherein the illuminating means includes a plurality of light sources arranged in predetermined spaced relationship and connected to respective antenna means for periodically receiving sufficient microwave radiation to flash in a desired pattern and produce a desired activity effect.
Claim 10
Dependent Claim
30 words
A microwave utensil as set forth in claim 7 wherein said respective antenna means are dimensioned for limiting said received microwave radiation and protecting said light sources from overload damage.
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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) | 1992-01-03 | 1992-07-04 | 1993-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-01-03 | 1996-07-04 | 1997-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-01-03 | 2000-07-04 | 2001-01-03 | $7700.00 | Window Closed / Lapsed |