US3624779A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter unit
Assignee: Filterite Corp
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Filing: 1970-03-09
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Granted: 1971-11-30
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Expires: 1990-03-09
Abstract
Abstract A fluid filter unit having a rigid perforated core and a filter covering extending over a substantial area thereof, the core having a projecting end portion adapted to fit into a supporting means, or ferrule mounted in a header in a filter housing or casing, in which the header is provided with one or more openings therethrough, the projecting end portion of the core being made adaptable to the diameter of the supporting means associated with the said header openings, which vary in diameter by rendering the projecting end portion of the core compressible by corrugating, slotting, or otherwise equivalently fashioning the same to accomplish this result.
Inventors
- 👤 Charles A Miller Jr
- 👤 Joseph B Masaschi
- 👤 Robert Miller Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:16
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/111; B01D29/13; B01D29/15; B01D29/21; B01D29/216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A fluid filter unit adapted for use in a filtering system having a casing for receiving the filter unit and a supporting and sealing means associated with said casing for directing the said fluid through the filter unit, said filter unit comprising: a. a rigid tubular core having walls pervious to the passage of fluid therethrough; b. a covering of filter material surrounding a substantial portion of the core; c. said core having a portion extending beyond at least one end of the covering of the filter material; d. the extended end of the core having longitudinal corrugations rendering same adaptable for inserting the extended portion in a supporting means of a lesser diameter as compared to said core.
Claim 2
Dependent Claim
119 words
A fluid filter unit adapted for use in a filtering system having a casing for receiving the filter unit and a supporting and sealing means associated with said casing for directing the said fluid through the filter unit, said filter unit comprising: a. a rigid tubular core having walls pervious to the passage of fluid therethrough; b. a covering of filter material surrounding a substantial portion of the core; c. said core having a portion extending beyond at least one end of the covering of the filter material; d. the extended end of the core having longitudinal corrugations rendering same adaptable for inserting the extended portion in a supporting means of a lesser diameter as compared to said core.
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) | 1974-11-29 | 1975-05-31 | 1975-11-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-29 | 1979-05-31 | 1979-11-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-29 | 1983-05-31 | 1983-11-30 | $7700.00 | Window Closed / Lapsed |