US3870640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filter with vibration of screen
Assignee: Delaware Capital Formation Inc
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Filing: 1973-11-12
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Granted: 1975-03-11
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Expires: 1993-11-12
Abstract
Abstract A filter apparatus having means for maintaining a filter element in a state of at least substantially continuous agitation. There is provided a tank having a hollow filter element positioned therein. The liquid being filtered is introduced into the tank exteriorly of the filter element, passes through the filter element in a radially inward direction and the filtered liquid then is withdrawn from the interior of the filter element. At least a portion of the filter element is movably related to the tank and a vibrator unit is provided on the filter element. Operation of the vibrator unit causes agitation of the filter element within the tank and thereby maintains the filter element in a state of constant agitation. It is often convenient to drive the agitating unit by compressed air and if so a pair of hoses will be connected to the agitator unit. Preferably, such hoses will be brought through the ring by which the filter element is supported and then along the length of the filter element to the agitator unit, whereby the filteragitator-hose assembly may be made in a single, easily replaceable unit.
Inventors
- 👤 Thomas L Reece
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:27
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/11; B01D29/62; B01D29/70; B01D29/72
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
326 words
In a filter apparatus for inhibiting the accumulation of solid material on or across the openings of a filter element and including a liquid line having vertically spaced first and second liquid conduits, a casing having a first end outlet closure member and a second end closure member each of which is provided with an aperture and means for respectively connecting the first and second end closure members to the first and second liquid conduits through said apertures in sealing relationship therewith whereby the casing closure members provide a closed liquid connection for carrying liquid between said conduits, the filter element being pendently disposed within the casing and having an upper end portion supported by the casing and in communication with the first conduit leaving a liquid chamber within the casing surrounding and extending below and beyond the lower free end portion of the filter element, the improvement comprising: a vibrator directly fixed to and supported by the lower end portion of said filter element, said vibrator being spaced within said casing and from the upper end of the filter element; means defining a pair of vibrator energizing passageways, said passageways including a pair of conduits in the casing and having ends essentially fixed with respect to the corresponding ends of said filter element, said conduits having lower ends connected to said vibrator and extending longitudinally of the filter element to source ends at the upper end of said filter element, said passageways further including conduits external of said casing for respective connection with external supply and return energy means; and flange means pendently supporting said filter element and releasably holding the upper end of said filter element onto said casing, said flange means incorporating intermediate portions of said passageways which interconnect said conduits in the casing to said conduits external of said casing; said flange means, filter element, passageway means and vibrator defining a single integral unit for insertion into and removal from said casing.
Claim 2
Dependent Claim
326 words
In a filter apparatus for inhibiting the accumulation of solid material on or across the openings of a filter element and including a liquid line having vertically spaced first and second liquid conduits, a casing having a first end outlet closure member and a second end closure member each of which is provided with an aperture and means for respectively connecting the first and second end closure members to the first and second liquid conduits through said apertures in sealing relationship therewith whereby the casing closure members provide a closed liquid connection for carrying liquid between said conduits, the filter element being pendently disposed within the casing and having an upper end portion supported by the casing and in communication with the first conduit leaving a liquid chamber within the casing surrounding and extending below and beyond the lower free end portion of the filter element, the improvement comprising: a vibrator directly fixed to and supported by the lower end portion of said filter element, said vibrator being spaced within said casing and from the upper end of the filter element; means defining a pair of vibrator energizing passageways, said passageways including a pair of conduits in the casing and having ends essentially fixed with respect to the corresponding ends of said filter element, said conduits having lower ends connected to said vibrator and extending longitudinally of the filter element to source ends at the upper end of said filter element, said passageways further including conduits external of said casing for respective connection with external supply and return energy means; and flange means pendently supporting said filter element and releasably holding the upper end of said filter element onto said casing, said flange means incorporating intermediate portions of said passageways which interconnect said conduits in the casing to said conduits external of said casing; said flange means, filter element, passageway means and vibrator defining a single integral unit for insertion into and removal from said casing.
Claim 3
Dependent Claim
326 words
In a filter apparatus for inhibiting the accumulation of solid material on or across the openings of a filter element and including a liquid line having vertically spaced first and second liquid conduits, a casing having a first end outlet closure member and a second end closure member each of which is provided with an aperture and means for respectively connecting the first and second end closure members to the first and second liquid conduits through said apertures in sealing relationship therewith whereby the casing closure members provide a closed liquid connection for carrying liquid between said conduits, the filter element being pendently disposed within the casing and having an upper end portion supported by the casing and in communication with the first conduit leaving a liquid chamber within the casing surrounding and extending below and beyond the lower free end portion of the filter element, the improvement comprising: a vibrator directly fixed to and supported by the lower end portion of said filter element, said vibrator being spaced within said casing and from the upper end of the filter element; means defining a pair of vibrator energizing passageways, said passageways including a pair of conduits in the casing and having ends essentially fixed with respect to the corresponding ends of said filter element, said conduits having lower ends connected to said vibrator and extending longitudinally of the filter element to source ends at the upper end of said filter element, said passageways further including conduits external of said casing for respective connection with external supply and return energy means; and flange means pendently supporting said filter element and releasably holding the upper end of said filter element onto said casing, said flange means incorporating intermediate portions of said passageways which interconnect said conduits in the casing to said conduits external of said casing; said flange means, filter element, passageway means and vibrator defining a single integral unit for insertion into and removal from said casing.
Claim 4
Dependent Claim
326 words
In a filter apparatus for inhibiting the accumulation of solid material on or across the openings of a filter element and including a liquid line having vertically spaced first and second liquid conduits, a casing having a first end outlet closure member and a second end closure member each of which is provided with an aperture and means for respectively connecting the first and second end closure members to the first and second liquid conduits through said apertures in sealing relationship therewith whereby the casing closure members provide a closed liquid connection for carrying liquid between said conduits, the filter element being pendently disposed within the casing and having an upper end portion supported by the casing and in communication with the first conduit leaving a liquid chamber within the casing surrounding and extending below and beyond the lower free end portion of the filter element, the improvement comprising: a vibrator directly fixed to and supported by the lower end portion of said filter element, said vibrator being spaced within said casing and from the upper end of the filter element; means defining a pair of vibrator energizing passageways, said passageways including a pair of conduits in the casing and having ends essentially fixed with respect to the corresponding ends of said filter element, said conduits having lower ends connected to said vibrator and extending longitudinally of the filter element to source ends at the upper end of said filter element, said passageways further including conduits external of said casing for respective connection with external supply and return energy means; and flange means pendently supporting said filter element and releasably holding the upper end of said filter element onto said casing, said flange means incorporating intermediate portions of said passageways which interconnect said conduits in the casing to said conduits external of said casing; said flange means, filter element, passageway means and vibrator defining a single integral unit for insertion into and removal from said casing.
Claim 5
Dependent Claim
69 words
The device of claim 1 wherein said filter element comprises a fixed length coil of spirally wound metal wire arranged to define filtering spaces therebetween and rigidly connected at one end thereof to said flange means, the spirally wound nature of said filter enhancing its capacity to withstand vibration of said vibrator mounted on the other end thereof without excessive fatiguing of the constituent metal of the filter element.
Claim 6
Dependent Claim
82 words
The device of claim 1 wherein said flange means comprises a radial flange having an opening therein receiving said filter element rigidly thereinto and a peripheral portion axially sandwiched and sealed between the upper of said closure members and an intermediate portion of said casing; and said intermediate passageway portions in saiD flange opening inboard of said peripheral portion to said axially extending conduits in said casing and opening radially of said flange through the external periphery thereof to said external conduits.
Claim 7
Dependent Claim
35 words
The device of claim 1 wherein said vibrator is fluid operated from a source of pressure fluid and the semiflexible conduits are hoses for supply and exhaust of pressure fluid to and from said vibrator.
Claim 8
Dependent Claim
47 words
The device of claim 1, wherein the upper end portion of said filter element is supported by and connected to the casing through a flexible coupling to allow movement of the entire filter element, the flexible coupling having a substantially cylindrical portion coaxially engaging the filter element.
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) | 1978-03-10 | 1978-09-09 | 1979-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-03-10 | 1982-09-09 | 1983-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-03-10 | 1986-09-09 | 1987-03-11 | $7700.00 | Window Closed / Lapsed |