US3595399A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter
Assignee: Anti Pollution Devices Inc
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Filing: 1969-11-25
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Granted: 1971-07-27
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Expires: 1989-11-25
Abstract
Abstract A throwaway, low-pressure, water-filtering apparatus adapted to be easily and quickly installed and removed and/or replaced.
Inventors
- 👤 Ralph L Abos
- 👤 Carl A Stuewe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:42
CPC Classifications
B; B01; B01D; B01D35/00; B01D35/02; B01D35/04
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
197 words
Fluid-filtering apparatus, comprising; A. An elongated tubular shell; B. inlet and outlet closure means for respective ends of said shell, each closure means having a passage therethrough; C. a hollow externally corrugated tube disposed within the shell, said tube being of smaller external diameter than the internal diameter of the shell to provide an annular space between said tube and shell, said tube also being shorter than the shell and having one end adjacent the outlet closure means, the other end being spaced from the inlet closure means; D. means closing the latter end of said tube against the flow of fluid therethrough; E. a sleeve of filter cloth disposed over the tube; F. at least one layer of mesh means over the filter cloth, said mesh means being in the space between the tube and shell and holding the filter cloth securely in position; G. and a body of filtering material in the space between the inlet closure and the adjacent end of the tube whereby fluid to be filtered flows through said filtering material, sleeve, and mesh means and thence into and along said corrugated tube and exits from the outlet end of said shell.
Claim 2
Dependent Claim
197 words
Fluid-filtering apparatus, comprising; A. An elongated tubular shell; B. inlet and outlet closure means for respective ends of said shell, each closure means having a passage therethrough; C. a hollow externally corrugated tube disposed within the shell, said tube being of smaller external diameter than the internal diameter of the shell to provide an annular space between said tube and shell, said tube also being shorter than the shell and having one end adjacent the outlet closure means, the other end being spaced from the inlet closure means; D. means closing the latter end of said tube against the flow of fluid therethrough; E. a sleeve of filter cloth disposed over the tube; F. at least one layer of mesh means over the filter cloth, said mesh means being in the space between the tube and shell and holding the filter cloth securely in position; G. and a body of filtering material in the space between the inlet closure and the adjacent end of the tube whereby fluid to be filtered flows through said filtering material, sleeve, and mesh means and thence into and along said corrugated tube and exits from the outlet end of said shell.
Claim 3
Dependent Claim
12 words
The invention defined by claim 1, wherein the mesh means comprises screening.
Claim 4
Dependent Claim
19 words
The invention defined by claim 2, wherein the filtering material comprises a mixture of activated carbon and diatomaceous earth.
Claim 5
Dependent Claim
177 words
Fluid-filtering apparatus, comprising; A. an elongated tubular shell; B. inlet and outlet closure means for respective ends of said shell, each closure having a passage therethrough; C. a hollow tube disposed within the shell, said tube having longitudinally extending external ribs apart by longitudinally extending channels, said tube being of smaller external diameter than the internal diameter of the shell to provide an annular space between said tube and shell, said tube also being shorter than the shell and having one end adjacent the outlet closure, the other end being spaced from the inlet closure; D. means closing the latter end of said tube; E. a sleeve of filter cloth disposed over the tube; F. at least one layer of screening over the filter cloth, said screening being in the space between the tube and shell and holding the filter cloth securely in position; G. and a body of filtering material in the space between the inlet closure and the adjacent end of the tube, said filtering material comprising a mixture of activated carbon and diatomaceous earth.
Claim 6
Dependent Claim
177 words
Fluid-filtering apparatus, comprising; A. an elongated tubular shell; B. inlet and outlet closure means for respective ends of said shell, each closure having a passage therethrough; C. a hollow tube disposed within the shell, said tube having longitudinally extending external ribs apart by longitudinally extending channels, said tube being of smaller external diameter than the internal diameter of the shell to provide an annular space between said tube and shell, said tube also being shorter than the shell and having one end adjacent the outlet closure, the other end being spaced from the inlet closure; D. means closing the latter end of said tube; E. a sleeve of filter cloth disposed over the tube; F. at least one layer of screening over the filter cloth, said screening being in the space between the tube and shell and holding the filter cloth securely in position; G. and a body of filtering material in the space between the inlet closure and the adjacent end of the tube, said filtering material comprising a mixture of activated carbon and diatomaceous earth.
Claim 7
Dependent Claim
27 words
The invention defined by claim 4, wherein the filtering cloth comprises canton flannel napped on at least one side and with the nap at the outer side.
Claim 8
Dependent Claim
29 words
The invention defined by claim 5, wherein there are a plurality of layers of screening over the flannel, said screening filling the space between the tube and the shell.
Claim 9
Dependent Claim
17 words
The invention defined by claim 4, including a distributor within the shell and adjacent the inlet closure.
Claim 10
Dependent Claim
24 words
The invention defined by claim 4, including a flexible seal secured to each of the closures, said seals having relatively small central opening therein.
Claim 11
Dependent Claim
53 words
The invention defined by claim 8, wherein the closure means have chambers therein at the outer sides of the respective seals, and there is a washer floating in each of said chambers, said washers having a central opening therein aligned with the openings in said seals to provide backing for the flexible seals.
Claim 12
Dependent Claim
68 words
The invention defined by claim 4, including a collar disposed against the outlet closure means, said collar having an opening therethrough in communication with the channels in the tube, said collar having a relatively thin flange extending longitudinally inwardly and the open end of the sleeve of filter cloth extends over said flange; and means securing said open end of the sleeve on said flange of the collar.
Claim 13
Dependent Claim
95 words
The invention defined by claim 8, including a nipple at each end of the filter apparatus receivable in the passages in the closures; and carrier means for said nipples, said carrier means being mounted for movement toward and away from each other, said nipples being moved into and out of said passages in the closures, the openings in the washers and the flexible seals, to thereby provide inlet and outlet connection for the filter, said washers being disposed on the nipples and positioned adjacent to the flexible seals to provide backing for the flexible seals.
Claim 14
Dependent Claim
65 words
The invention defined by claim 11, including support means, said support means having guides at the ends; respective slide members slidably disposed in said guide for longitudinal movement, said carrier means being mounted on respective slide members whereby the carrier means and their respective nipples are movable toward and away from each other into and out of the passages of the inlet and outlet closures.
Claim 15
Dependent Claim
15 words
The invention defined by claim 12, including means for retaining the nipples in the passages.
Claim 16
Dependent Claim
62 words
The invention defined by claim 13, wherein said means for retaining the nipples in the passages comprises a housing having end walls, said housing being removably mounted on the support means with the end walls thereof positioned adjacent the nipple carrier means to retain said carrier means in their inward position whereat the nipples are disposed in the passages of the closures.
Claim 17
Dependent Claim
26 words
The invention defined by claim 4, wherein the closure are permanently secured in the ends of the shell, said filtering apparatus being a throwaway filtering apparatus.
Claim 18
Dependent Claim
50 words
The invention defined by claim 4, including a diffuser attachable to the spout of a faucet, said diffuser having an inlet chamber and an outlet chamber separated from each other, said inlet and outlet closures having means for connecting same respectively to the inlet and outlet chambers of said diffuser.
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) | 1974-07-26 | 1975-01-25 | 1975-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-26 | 1979-01-25 | 1979-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-26 | 1983-01-25 | 1983-07-27 | $7700.00 | Window Closed / Lapsed |