US4468865A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold air microwave drying apparatus
Assignee: TECHNO-VENTURE Co Ltd
•
Filing: 1981-09-23
•
Granted: 1984-09-04
•
Expires: 2001-09-23
Abstract
Abstract A drying apparatus employing adjustment baffles for cold air that is blown vertically upward from below a moving mesh belt, thereby achieving a uniform delivery of said cold air within a chamber heated by microwave energy.
Inventors
- 👤 Makoto Inagaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:59
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/78; A; A23; A23B; A23B2/00; A23B2/90; A23B2/97; F; F26; F26B; F26B3/00; F26B3/32; F26B3/34; F26B3/343; H05B2206/00; H05B2206/04; H05B2206/046
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
122 words
Apparatus for drying food products, comprising a drying chamber having a product inlet port, and a product outlet port; a movable foraminous belt for transporting food products through said chamber in a horizontal direction between said inlet and outlet ports; waveguide means for directing microwave energy toward said belt to heat food products thereon; a cold air inlet port below said chamber; adjustable baffle means disposed intermediate said cold air inlet port and said belt and below said belt for substantially uniformly directing cold air upwardly through said belt to dry food products thereon, said baffle means comprising a plurality of individually adjustable orthogonal baffles; and sealing means for restricting the emission of microwave radiation from said product inlet and outlet ports.
Claim 2
Dependent Claim
122 words
Apparatus for drying food products, comprising a drying chamber having a product inlet port, and a product outlet port; a movable foraminous belt for transporting food products through said chamber in a horizontal direction between said inlet and outlet ports; waveguide means for directing microwave energy toward said belt to heat food products thereon; a cold air inlet port below said chamber; adjustable baffle means disposed intermediate said cold air inlet port and said belt and below said belt for substantially uniformly directing cold air upwardly through said belt to dry food products thereon, said baffle means comprising a plurality of individually adjustable orthogonal baffles; and sealing means for restricting the emission of microwave radiation from said product inlet and outlet ports.
Claim 3
Dependent Claim
23 words
Apparatus according to claim 1, further comprising rotatable stirring means for disrupting standing waves to uniformly direct said microwave energy toward said belt.
References Cited (Backward Citations)
US2952078A
Cited
US2836191A
Cited
US3277580A
Cited
US3513567A
Cited
US3676058A
Cited
US3889009A
Cited
US4154861A
Cited
US4208806A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-09-04 | 1988-03-05 | 1988-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-09-04 | 1992-03-05 | 1992-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-09-04 | 1996-03-05 | 1996-09-04 | $7700.00 | Window Closed / Lapsed |