US3665141A
Expired / Lapsed
US
⏱️ 0.0 years remaining
End trap for microwave oven
Assignee: DCA Food Industries Inc
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Filing: 1970-07-01
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Granted: 1972-05-23
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Expires: 1990-07-01
Abstract
Abstract An end trap for a microwave oven. An enclosure defining a relatively high tunnel is disposed around a port of the oven. A conveyor moves through the port of the oven, and through and over the bottom of the tunnel. Along each side of the tunnel is a bracket, a metallic baffle plate being placed across the two brackets adjacent to the oven port. At the forward end of the tunnel, a slab of energy absorbing material is placed across the two brackets, and an end plate is secured to the forward end of the tunnel. The baffle defines a tunnel whose height is less than one-half of the wavelength of the energy at which the oven is operated to attenuate the leakage of microwave energy from the oven. The slab of energy absorbing material is provided to absorb any energy which does escape through the tunnel defined by the baffle plate. To clean the tunnel, all that is required is to remove the end plate, and then the slabs of energy absorbing material and the baffle plate.
Inventors
- 👤 Robert F Schiffmann
- 👤 Ernest W Stein
- 👤 Harold B Kaufman Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:14
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; H05B6/782; H05B6/76
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
194 words
An end trap for a microwave oven having a port through which a conveyor moves comprising a tunnel enclosure attached to the exterior of said oven and disposed around said port such that said conveyor as it moves through said port moves along the bottom of said tunnel enclosure, said tunnel enclosure having a height sufficient to allow the insertion of the hand and arm of an operator for the cleaning thereof, a conducting plate extending across a portion of said tunnel and disposed adjacent to said oven above said port, said conducting plate providing a vertical clearance above the bottom of said enclosure which is less than one-half of the wavelength of the energy at which said oven is operated, an element of microwave energy absorbing material disposed adjacent to said conducting plate and extended across the width of said tunnel at the end thereof disposed away from said oven port for absorbing any microwave energy which escapes from said oven port and travels down to said tunnel past said plate, and means for releasably securing said plate and said energy absorbing element within said enclosure to permit the removal and cleaning thereof.
Claim 2
Dependent Claim
194 words
An end trap for a microwave oven having a port through which a conveyor moves comprising a tunnel enclosure attached to the exterior of said oven and disposed around said port such that said conveyor as it moves through said port moves along the bottom of said tunnel enclosure, said tunnel enclosure having a height sufficient to allow the insertion of the hand and arm of an operator for the cleaning thereof, a conducting plate extending across a portion of said tunnel and disposed adjacent to said oven above said port, said conducting plate providing a vertical clearance above the bottom of said enclosure which is less than one-half of the wavelength of the energy at which said oven is operated, an element of microwave energy absorbing material disposed adjacent to said conducting plate and extended across the width of said tunnel at the end thereof disposed away from said oven port for absorbing any microwave energy which escapes from said oven port and travels down to said tunnel past said plate, and means for releasably securing said plate and said energy absorbing element within said enclosure to permit the removal and cleaning thereof.
Claim 3
Dependent Claim
31 words
An end trap for a microwave oven in accordance with claim 1 further including an end plate detachably secured to the end of said tunnel enclosure disposed away from said oven.
Claim 4
Dependent Claim
41 words
An end trap for a microwave oven in accordance with claim 2 wherein said releasably securing means includes two brackets, each attached to an inner side of said tunnel enclosure, across which said plate and said energy absorbing element are placed.
Claim 5
Dependent Claim
52 words
An end trap for a microwave oven in accordance with claim 3 further including an additional energy absorbing element disposed at the bottom of said tunnel enclosure at the end thereof disposed awAy from said oven port, said conveyor being placed on top of and moving over said additional energy absorbing element.
Claim 6
Dependent Claim
41 words
An end trap for a microwave oven in accordance with claim 1 wherein said releasably securing means includes two brackets, each attached to an inner side of said tunnel enclosure, across which said plate and said energy absorbing element are placed.
Claim 7
Dependent Claim
52 words
An end trap for a microwave oven in accordance with claim 5 further including an additional energy absorbing element disposed at the bottom of said tunnel enclosure at the end thereof disposed away from said oven port, said conveyor being placed on top of and moving over said additional energy absorbing element.
Claim 8
Dependent Claim
25 words
An end trap for a microwave oven in accordance with claim 6 wherein said energy absorbing element is a slab of microwave energy absorbing material.
Claim 9
Dependent Claim
30 words
An end trap for a microwave oven in accordance with claim 6 wherein said energy absorbing element and said additional energy absorbing element are slabs of microwave energy absorbing material.
Claim 10
Dependent Claim
25 words
An end trap for a microwave oven in accordance with claim 1 wherein said energy absorbing element is a slab of microwave energy absorbing material.
Claim 11
Dependent Claim
31 words
An end trap for a microwave oven in accordance with claim 9 further including an end plate detachably secured to the end of said tunnel enclosure disposed away from said oven.
Claim 12
Dependent Claim
52 words
An end trap for a microwave oven in accordance with claim 10 further including an additional energy absorbing element disposed at the bottom of said tunnel enclosure at the end thereof disposed away from said oven port, said conveyor being placed on top of and moving over said additional energy absorbing element.
Claim 13
Dependent Claim
30 words
An end trap for a microwave oven in accordance with claim 10 wherein said energy absorbing element and said additional energy absorbing element are slabs of microwave energy absorbing material.
Claim 14
Dependent Claim
52 words
An end trap for a microwave oven in accordance with claim 1 further including an additional energy absorbing element disposed at the bottom of said tunnel enclosure at the end thereof disposed away from said oven port, said conveyor being placed on top of and moving over said additional energy absorbing element.
Claim 15
Dependent Claim
30 words
An end trap for a microwave oven in accordance with claim 13 wherein said energy absorbing element and said additional energy absorbing element are slabs of microwave energy absorbing material.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-23 | 1975-11-22 | 1976-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-23 | 1979-11-22 | 1980-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-23 | 1983-11-22 | 1984-05-23 | $7700.00 | Window Closed / Lapsed |