US5026478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal holder and protector for a disposable plastic capsule
Assignee: Roki Techno Co Ltd
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Filing: 1990-05-03
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Granted: 1991-06-25
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Expires: 2010-05-03
Abstract
Abstract A disposable capsule filter extremely suited for filtering paints, inks and the like which contain an organic solvent. The filter comprises a disposable capsule accommodating filter elements and a metal holder accommodating the capsule for the purpose of preventing rupture of the capsule. The capsule is formed from a plastic material by blow molding or pressure forming. The capsule has an outwardly projecting portion in contact with a clamped portion of the metal holder.
Inventors
- 👤 Kazushige Tanabe
- 👤 Katsutoshi Bonkohara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:10
CPC Classifications
B; B01; B01D; B01D27/00; B01D27/08; B01D2201/00; B01D2201/30; B01D2201/307; B01D2201/34
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
120 words
A filter for pressurized filtration comprising a disposable capsule accommodating one or more filter elements and a metal holder accommodating said capsule for the purpose of preventing rupture of said capsule, said capsule being formed from a plastic material by blow molding or pressure forming, said capsule having an outwardly projecting swelling portion, said metal holder comprising upper and lower metal holder parts, both said metal holder parts being coupled together about said outwardly projecting swelling portion of said capsule so as to be in contact therewith, the lower metal holder part being formed with a ring like recess and having an O-ring fitted in said recess and contacted by said outwardly projecting swelling portion upon pressurization of the capsule.
Claim 2
Dependent Claim
120 words
A filter for pressurized filtration comprising a disposable capsule accommodating one or more filter elements and a metal holder accommodating said capsule for the purpose of preventing rupture of said capsule, said capsule being formed from a plastic material by blow molding or pressure forming, said capsule having an outwardly projecting swelling portion, said metal holder comprising upper and lower metal holder parts, both said metal holder parts being coupled together about said outwardly projecting swelling portion of said capsule so as to be in contact therewith, the lower metal holder part being formed with a ring like recess and having an O-ring fitted in said recess and contacted by said outwardly projecting swelling portion upon pressurization of the capsule.
Claim 3
Dependent Claim
23 words
The filter according to claim 1, wherein said upper and lower metal holder parts are secured to each other by a V-band clamp.
References Cited (Backward Citations)
US3958433A
Cited
US3979295A
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US4126559A
Cited
US4367081A
Cited
US4731178A
Cited
US4874513A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-06-24 | 1994-12-24 | 1995-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-06-24 | 1998-12-24 | 1999-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-06-24 | 2002-12-24 | 2003-06-25 | $7700.00 | Window Closed / Lapsed |