US3872576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inline filter construction
Assignee: Individual
•
Filing: 1974-04-01
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Granted: 1975-03-25
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Expires: 1994-04-01
Abstract
Abstract Two sides of a filter body are clamped about a porous filter disk which rests within recesses in the filter body sides with support and flow dispersal screens on each side of the filter disk in smaller, shallower recesses, the sides are peripherally welded to each other, the weld is allowed to cool and shrink clamping the filter disk between the sides to seal it within the filter body, the filter body is unclamped, and inlet and outlet tubes are fixed in central tube receiving bores in the filter body sides.
Inventors
- 👤 Lambert H Mott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:03
CPC Classifications
B; B23; B23K; B23K9/00; B23K9/02; B23K9/028; B01; B01D; B01D29/00; B01D29/01; B01D29/012; B01D29/05
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
98 words
The process of fabricating a filter comprising the steps of a. providing two disk shaped sides each containing a large recess, a smaller shallower recess, and a central bore, b. placing a porous filter disk in the large recess and clamping the sides about the filter disk with a clearance between the sides, c. circumferentially welding the sides forming a filter body, d. allowing the weld to cool and contract clamping and sealing the filter disk within the filter body, and e. unclamping the sides and fixing tubing lengths in the central bores of the filter body sides.
Claim 2
Dependent Claim
98 words
The process of fabricating a filter comprising the steps of a. providing two disk shaped sides each containing a large recess, a smaller shallower recess, and a central bore, b. placing a porous filter disk in the large recess and clamping the sides about the filter disk with a clearance between the sides, c. circumferentially welding the sides forming a filter body, d. allowing the weld to cool and contract clamping and sealing the filter disk within the filter body, and e. unclamping the sides and fixing tubing lengths in the central bores of the filter body sides.
Claim 3
Dependent Claim
35 words
The pRocess according to claim 1 with the additional step after step (a) of placing distribution screens in the smaller shallower recesses of substantially the same thickness as the depth of the smaller shallower recesses.
Claim 4
Dependent Claim
20 words
The process according to claim 2 wherein in step (e) the tubing lengths are fixed in the bores by soldering.
Claim 5
Dependent Claim
23 words
The process according to claim 3 wherein in step (e) the tubing lengths are soldered in the bores a distance from the screens.
Claim 6
Dependent Claim
30 words
The process according to claim 3 wherein in step (e) the screens contain a central aperture and the tube lengths are soldered in the bores to extend to the screens.
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) | 1978-03-24 | 1978-09-23 | 1979-03-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-24 | 1982-09-23 | 1983-03-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-24 | 1986-09-23 | 1987-03-25 | $7700.00 | Window Closed / Lapsed |