Patent US4646819A successfully refreshed from Google Patents.
US4646819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for drying air
Assignee: Zeks Air Drier Corp
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Filing: 1985-08-09
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Granted: 1987-03-03
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Expires: 2005-08-09
Abstract
Abstract Air drying apparatus wherein input air to be dried is passed through an air tube which contains a smaller refrigerant tube, with precooled air from the air tube being forced by baffles to flow along a tortuous path over the exterior of the air tube. The baffles being truncated discs positioned in the shell so that alternating baffles have the truncations facing in opposite directions.
Inventors
- 👤 Ronald G. Pridham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:18
CPC Classifications
F; F28; F28F; F28F9/00; F28F9/22; B; B01; B01D; B01D53/00; B01D53/26; B01D53/265; Y; Y10; Y10S; Y10S165/00; Y10S165/184; Y10S165/217; Y10S165/223
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
152 words
A heat exchange unit comprising: a. an elongated shell; b. a pair of tube sheets positioned in the shell adjacent to the ends thereof; c. a pair of caps secured to the ends of the shell to form headers at each end of the shell; d. a plurality of air carrying tubes positioned in the shell and extending through the tube sheets into the headers; e. a plurality of refrigerant carrying tubes connected in series, said refrigerant carrying tubes having a smaller diameter than said air carrying tubes, said refrigerant carrying tubes being positioned inside the air carrying tubes; and f. a plurality of baffles positioned in the shell for forming a tortuous path for the flow of air exiting from the air carrying tubes, said baffles being in the form of truncated discs, said baffles being so positioned in the shell that alternating baffles have the truncations facing in opposite directions.
Claim 2
Dependent Claim
152 words
A heat exchange unit comprising: a. an elongated shell; b. a pair of tube sheets positioned in the shell adjacent to the ends thereof; c. a pair of caps secured to the ends of the shell to form headers at each end of the shell; d. a plurality of air carrying tubes positioned in the shell and extending through the tube sheets into the headers; e. a plurality of refrigerant carrying tubes connected in series, said refrigerant carrying tubes having a smaller diameter than said air carrying tubes, said refrigerant carrying tubes being positioned inside the air carrying tubes; and f. a plurality of baffles positioned in the shell for forming a tortuous path for the flow of air exiting from the air carrying tubes, said baffles being in the form of truncated discs, said baffles being so positioned in the shell that alternating baffles have the truncations facing in opposite directions.
References Cited (Backward Citations)
US2521040A
Cited
US3488677A
Cited
US3734174A
Cited
US3722583A
Cited
US3744459A
Cited
US3797565A
Cited
US3899023A
Cited
US3818718A
Cited
US4027729A
Cited
EP0002325A1
Cited
US4193443A
Cited
US4242110A
Cited
US4254826A
Cited
US4410035A
Cited
US4440217A
Cited
US4550775A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-02 | 1990-09-01 | 1991-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-02 | 1994-09-01 | 1995-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-02 | 1998-09-01 | 1999-03-03 | $7700.00 | Window Closed / Lapsed |