Patent US4946485A successfully refreshed from Google Patents.
US4946485A
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Air drier tower
Assignee: Suzuki Garphyttan AB
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Filing: 1989-10-12
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Granted: 1990-08-07
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Expires: 2009-10-12
Abstract
Abstract An air drier tower comprises a base part (2), a reservoir (1) attached thereto, and in the reservoir a cartridge (7) containing desiccant (8). The cartridge is composed of two halves (9,10) having circular walls extending into each other to form a winding air path through the desiccant. A spring (11) is arranged between the reservoir and the cartridge in order to exert a bias on one cartridge half and accordingly on the desiccant.
Inventors
- 👤 Anders M. Larsson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:24
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/261
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
69 words
An air drier tower, comprising a base part (2), a reservoir (1) attached thereto, and in the reservoir a cartridge (7) containing desiccant (8), the cartridge (7) is composed of a lower half (9) and an upper half (10) having circular walls extending into each other to form a winding air path through the desiccant (8), the two halves being spring biased together and mounted in the reservoir (1).
Claim 2
Dependent Claim
69 words
An air drier tower, comprising a base part (2), a reservoir (1) attached thereto, and in the reservoir a cartridge (7) containing desiccant (8), the cartridge (7) is composed of a lower half (9) and an upper half (10) having circular walls extending into each other to form a winding air path through the desiccant (8), the two halves being spring biased together and mounted in the reservoir (1).
Claim 3
Dependent Claim
23 words
An air drier tower according to claim 1, wherein a single spring (11) is arranged between the reservoir (1) and the cartridge (7).
Claim 4
Dependent Claim
60 words
An air drier tower according to claim 1, wherein the lower cartridge half (9) has two circular walls extending upwards and the upper cartridge half (10) one circular wall extending downwards between the two walls of the lower half, so that a winding air path consisting of three concentric compartments (a, b, c) with the same cross-sectional areas are formed.
References Cited (Backward Citations)
US2790512A
Cited
US3171726A
Cited
FR2187393A2
Cited
US4388086A
Cited
US4581047A
Cited
US4816047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-06 | 1994-02-05 | 1994-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-06 | 1998-02-05 | 1998-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-06 | 2002-02-05 | 2002-08-07 | $7700.00 | Window Closed / Lapsed |