US4352735A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter-purifier cartridge
Assignee: Individual
•
Filing: 1981-05-04
•
Granted: 1982-10-05
•
Expires: 2001-05-04
Abstract
Abstract A filter-purifier cartridge having a purifier element which can be coupled to one end section of a tubular filter element, or can be adapted to retain filtering means within its hollow core, or be used separately; the purifier element with or without said filtering means, being manually separable from and joined to a top wall member disposed at one end section of said element, the cylinder of that purifier element which retains the filtering means within its hollow core can be adapted to function as the cartridge housing.
Inventors
- 👤 Isadore Turetsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:33
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/001; C02F1/003; B; B01; B01D; B01D24/00; B01D24/02; B01D24/10; B01D24/16; B01D24/165; B01D29/00; B01D29/01; B01D29/11; B01D29/114; B01D29/50; B01D29/56; B01D29/58; C02F2201/00; C02F2201/002; C02F2201/006
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
118 words
A filter-purifier cartridge for fluids, said cartridge comprising: a hollow self contained purifier element which functions as the cartridge housing, a tubular filter element disposed entirely within said purifier element and below purifying medium contained between two foraminous members, a washer contiguous to that end wall of said filter element facing the purifying medium; said purifier element being manually joined to, and separable from, a bottom wall member and a top wall member having an inlet and a discharge passage respectively, and means to retain said wall members in position; friction seals disposed between said members and said purifier element, said bottom wall member also functioning as a closer for the lower end of said tubular filter element.
Claim 2
Dependent Claim
118 words
A filter-purifier cartridge for fluids, said cartridge comprising: a hollow self contained purifier element which functions as the cartridge housing, a tubular filter element disposed entirely within said purifier element and below purifying medium contained between two foraminous members, a washer contiguous to that end wall of said filter element facing the purifying medium; said purifier element being manually joined to, and separable from, a bottom wall member and a top wall member having an inlet and a discharge passage respectively, and means to retain said wall members in position; friction seals disposed between said members and said purifier element, said bottom wall member also functioning as a closer for the lower end of said tubular filter element.
Claim 3
Dependent Claim
42 words
The invention defined in claim 1 in which said means for retaining both top and bottom wall members are tie rods having threaded end sections for receiving nuts, each tie rod extending through its associated hole in each of said wall members.
Claim 4
Dependent Claim
65 words
The invention defined in claim 1 in which the inlet passage within said bottom wall member is a blind hole which communicates with the interior of said purifier element by means of a plurality of radial passages in said member; the fluid entering an annular passage intermediate a side wall section of said bottom wall member and the side wall of the purifier element housing.
Claim 5
Dependent Claim
29 words
The invention defined in claim 1 wherein the side wall of the inserted tubular filter can be maintained in spaced relationship with the side wall of the purifier element.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-10-04 | 1986-04-05 | 1986-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-10-04 | 1990-04-05 | 1990-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-10-04 | 1994-04-05 | 1994-10-05 | $7700.00 | Window Closed / Lapsed |