US3735563A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regenerating desiccator
Assignee: Individual
•
Filing: 1971-11-04
•
Granted: 1973-05-29
•
Expires: 1991-11-04
Abstract
Abstract Desiccator for plastic molding material comprising a pair of alternatingly operative drying towers, drying air in one tower and regenerating the desiccant in the other, in an auto-matic timed sequence, the towers each having means forcing the moist air through the desiccant in a tortuous, e.g., helical path, and the dried air to a plenum chamber hopper for the molding material.
Inventors
- 👤 C Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:47
CPC Classifications
F; F26; F26B; F26B17/00; F26B17/12; F26B17/14; F26B17/1408; B; B01; B01D; B01D53/00; B01D53/26; F26B21/00; F26B21/30; F26B21/33; F26B21/331
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
151 words
Desiccating apparatus for a plenum chamber hopper for plastics, said apparatus comprising a pair of desiccating towers, an elongated heating means in each tower centrally arranged therein and surrounded by desiccant, a valve for each tower, a conduit to each valve for moist air from the hopper, a conduit from each valve for dry air to the hopper, a conduit from each valve to each tower for moist air, a conduit to each valve from each tower for dry air, said valves being selectively alternately actuated in unison for supplying moist air to one tower for drying this air and returning it to the hopper while at the same time passing heated air through the other tower to dry the desiccant therein, including a continuous baffle in each tower forcing the air to travel a tortuous path therein and thereby causing the air to pass through substantially all of the desiccant.
Claim 2
Dependent Claim
151 words
Desiccating apparatus for a plenum chamber hopper for plastics, said apparatus comprising a pair of desiccating towers, an elongated heating means in each tower centrally arranged therein and surrounded by desiccant, a valve for each tower, a conduit to each valve for moist air from the hopper, a conduit from each valve for dry air to the hopper, a conduit from each valve to each tower for moist air, a conduit to each valve from each tower for dry air, said valves being selectively alternately actuated in unison for supplying moist air to one tower for drying this air and returning it to the hopper while at the same time passing heated air through the other tower to dry the desiccant therein, including a continuous baffle in each tower forcing the air to travel a tortuous path therein and thereby causing the air to pass through substantially all of the desiccant.
Claim 3
Dependent Claim
23 words
The apparatus of claim 1 wherein the heating means are hollow and the air passes through the heating means and through the desiccant.
Claim 4
Dependent Claim
12 words
The apparatus of claim 1 wherein the baffle surrounds the heating means.
Claim 5
Dependent Claim
15 words
The apparatus of claim 3 wherein the baffle is in the form of a spiral.
Claim 6
Dependent Claim
16 words
The apparatus of claim 4 wherein the spiral baffle surrounds the heating means in each tower.
Claim 7
Dependent Claim
18 words
The apparatus of claim 4 wherein the desiccant substantially fills each tower and the baffle is embedded therein.
Claim 8
Dependent Claim
40 words
The apparatus of claim 1 wheRein the heating means are hollow and the air passes through the heating means and through the desiccant in one tower and through the desiccant, and then through the heating means in the other tower.
References Cited (Backward Citations)
US3264803A
Cited
US3621585A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |