Patent US3722539A successfully refreshed from Google Patents.
US3722539A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid feed conduit for processing apparatus
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1970-12-04
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Granted: 1973-03-27
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Expires: 1990-12-04
Abstract
Abstract A fluid distributing and collecting conduit for transferring liquid under pressure to and from materials confined within a processing vessel comprises a thin walled, helically convoluted rigid tube having a plurality of spatially disposed orifices located in the bottom of the external helical groove. A fine mesh sleeve is tightly fitted over the tube to prevent said material from entering said tube.
Inventors
- 👤 H Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:58
CPC Classifications
F; F16; F16L; F16L11/00; F16L11/04; F16L11/11; F16L11/118; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86348
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
101 words
For use in processing apparatus of the type which includes a processing tank for containing materials to be processed and at least one conduit disposed within the interior of said tank, said conduit including a closed-end, helically convoluted tube having at least one aperture therein, said tube having an external helical groove, said aperture being disposed at the innermost portion of said groove; and a metal mesh sleeve surrounding said tube and including an internal, helical ridge portion extending partially within said groove to fix said sleeve to said tube so that said tube and said sleeve form an integral unit.
Claim 2
Dependent Claim
101 words
For use in processing apparatus of the type which includes a processing tank for containing materials to be processed and at least one conduit disposed within the interior of said tank, said conduit including a closed-end, helically convoluted tube having at least one aperture therein, said tube having an external helical groove, said aperture being disposed at the innermost portion of said groove; and a metal mesh sleeve surrounding said tube and including an internal, helical ridge portion extending partially within said groove to fix said sleeve to said tube so that said tube and said sleeve form an integral unit.
Claim 3
Dependent Claim
20 words
The invention according to claim 1, wherein said external groove in said tube extends substantially the length of said tube.
Claim 4
Dependent Claim
40 words
The invention according to claim 2, wherein said mesh sleeve is composed of a woven material, said material being composed of elongated interwoven members extending at an angle of substantially 45 degrees relative to the longitudinal axis of said tube.
Claim 5
Dependent Claim
46 words
The invention according to claim 1, further including a plug member having a threaded portion, said threaded portion being complementally shaped relative to said internal groove of said tube and said threaded portion being threaded into one end of said tube to form said closed end.
Claim 6
Dependent Claim
53 words
The invention according to claim 1 wherein is provided: a plurality of apertures in said tube opening in the bottom portions of said groove, said tube is thin walled and includes an internal helical groove, and said mesh sleeve is formed by interwoven filaments each extending in a helical direction along said tube.
Claim 7
Dependent Claim
11 words
The invention according to claim 5 wherein said filaments are metallic.
Claim 8
Dependent Claim
34 words
The invention according to claim 5 wherein: said mesh consists of two sets of said filaments, the filaments in one of said sets being perpendicular to the filaments in the other of said sets.
Claim 9
Dependent Claim
12 words
The invention according to claim 3 wherein said interwoven members are metallic.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |