Patent US4964898A successfully refreshed from Google Patents.
US4964898A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dryer separater
Assignee: Vividstar International Inc
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Filing: 1989-04-03
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Granted: 1990-10-23
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Expires: 2009-04-03
Abstract
Abstract An improved apparatus for separating impurities from a stream of forced air by gravitational and centrifugal forces subjecting the air stream through a mesh coalescer to coalesce micro impurities of moisture or oil into large droplets which are forced through a helical passaway to condense into liquid. The separated liquid flows downwardly through a liquid protective unit into a liquid storage trap at the bottom of the device. The separated liquid when in the protective unit is free from the moving stream of forced air as latter swirls upwardly into an air filter and escape from an outlet port. The air stream once passed through the mesh coalescer, helical conduit and air filter is substantially free from any impurity.
Inventors
- 👤 Junji Toda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:06
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/26; B01D53/265; B01D45/00; B01D45/02; B01D45/12; B01D45/16; B01D46/00; B01D46/0027; B01D46/003; B01D46/0031; B01D46/24; B01D46/2403; B01D46/2411; B01D50/00; B01D50/20
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
202 words
An improved air filtering device for separating liquid and solid impurities from a stream of forced air, which comprises. a housing, a cylindrical central bore in said housing, an impurities air filtering element inserted into and seated in said cylindrical central bore, a spiral plate surrounding and encircling said cylindrical central bore thereby defining a downwardly directed helical passageway, a mesh coalescer filled inside said helical passageway, a liquid protective unit seated in a lower part of said housing below said cylindrical central bore, a contaminant cavity in the lower part of said housing below said liquid protective unit, a drainage opening for draining liquid contaminants from said contaminant cavity, Said helical passageway connecting at its upper end with an inlet port of said housing, and at its lower end with said liquid protective unit, and directing a stream of forced air downwardly from said inlet port through said mesh coalescer and coalescently, centrifugally and gravitationally separating liquid contaminants from said forced air, and collecting said liquid contaminant through said liquid protective unit into said contaminant cavity, an outlet port in an upper part of said housing above said air filtering clement allowing said forced air to escape upwardly from said housing.
Claim 2
Dependent Claim
202 words
An improved air filtering device for separating liquid and solid impurities from a stream of forced air, which comprises. a housing, a cylindrical central bore in said housing, an impurities air filtering element inserted into and seated in said cylindrical central bore, a spiral plate surrounding and encircling said cylindrical central bore thereby defining a downwardly directed helical passageway, a mesh coalescer filled inside said helical passageway, a liquid protective unit seated in a lower part of said housing below said cylindrical central bore, a contaminant cavity in the lower part of said housing below said liquid protective unit, a drainage opening for draining liquid contaminants from said contaminant cavity, Said helical passageway connecting at its upper end with an inlet port of said housing, and at its lower end with said liquid protective unit, and directing a stream of forced air downwardly from said inlet port through said mesh coalescer and coalescently, centrifugally and gravitationally separating liquid contaminants from said forced air, and collecting said liquid contaminant through said liquid protective unit into said contaminant cavity, an outlet port in an upper part of said housing above said air filtering clement allowing said forced air to escape upwardly from said housing.
Claim 3
Dependent Claim
48 words
An improved air filtering device as claimed on claim 1, wherein an impurities air filter element is disposally placed inside said cylindrical central bore, said filter element is made of high molecular weight polymer and highly absorbent paper for filtering said upwardly moving forced air of solid impurities.
Claim 4
Dependent Claim
60 words
An improved air filtering device as claimed in claim 1, wherein said liquid protective unit is made of multiple triangular tubings standing vertically at lower portion of said housing having a central inverted surface to provide room for said forced air to swirl upwardly through said filter element inside said cylindrical central bore to said outlet port of said housing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |