US3849903A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary dehydrator having anti-discharge structure for moisture-laden materials
Assignee: American Pollution Prevention Co Inc
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Filing: 1973-10-29
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Granted: 1974-11-26
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Expires: 1993-10-29
Abstract
Abstract A rotary dehydrator advances moisture-laden materials from an inlet of a rotating drum toward an outlet thereof while simultaneously lifting and tumbling the materials into and through a heated airstream flowing axially through the drum. An inclined baffle overlying the outlet obstructs access to the latter by the tumbling materials and by those materials entrained within the airstream so that only the materials which have been dehydrated to the desired extent can overcome the obstruction and be carried from the dehydrator by the discharging airstream. The baffle is extensible and may be adjusted angularly with respect to the outlet whereby to provide selectivity in controlling the specific gravity of the materials being discharged.
Inventors
- 👤 W Mcgehee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 12:50
CPC Classifications
F; F26; F26B; F26B11/00; F26B11/02; F26B11/026
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
171 words
In a rotary dehydrator: an elongated, tubular drum mounted for rotation about its longitudal axis; a pair of stationary end walls for said drum, one of said end walls having an inlet to the interior of said drum for introducing moisture-laden materials and a heated stream of air into the drum, the opposite end wall having an outlet from the drum for discharging dehydrated materials entrained within said airstream from the drum; means within said drum for repeatedly lifting and tumbling the materials into and through said airstream as said drum is rotated and as the materials advance toward said opposite end wall; and an inclined baffle overlying said outlet for obstructing access to the latter by the tumbling materials and those entrained within said airstream for preventing the discharge of those materials not sufficiently dehydrated to be carried out the outlet with said airstream, said baffle having an upper and a lower end, said baffle being extensible for varying the position of said lower end with respect to said outlet.
Claim 2
Dependent Claim
171 words
In a rotary dehydrator: an elongated, tubular drum mounted for rotation about its longitudal axis; a pair of stationary end walls for said drum, one of said end walls having an inlet to the interior of said drum for introducing moisture-laden materials and a heated stream of air into the drum, the opposite end wall having an outlet from the drum for discharging dehydrated materials entrained within said airstream from the drum; means within said drum for repeatedly lifting and tumbling the materials into and through said airstream as said drum is rotated and as the materials advance toward said opposite end wall; and an inclined baffle overlying said outlet for obstructing access to the latter by the tumbling materials and those entrained within said airstream for preventing the discharge of those materials not sufficiently dehydrated to be carried out the outlet with said airstream, said baffle having an upper and a lower end, said baffle being extensible for varying the position of said lower end with respect to said outlet.
Claim 3
Dependent Claim
64 words
In a rotary dehydrator as claimed in claim 1 wherein said baffle is hinged at said upper end thereof to said opposite end wall for swinging movement of said lower end toward and away from said opposite end wall, and wherein means is provided for supporting the baffle in any one of a number of angled positions along the path of swinging movement thereof.
References Cited (Backward Citations)
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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) | 1977-11-25 | 1978-05-27 | 1978-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-25 | 1982-05-27 | 1982-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-25 | 1986-05-27 | 1986-11-26 | $7700.00 | Window Closed / Lapsed |