Patent US3642138A successfully refreshed from Google Patents.
US3642138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filtering tanks for waste disposal systems
Assignee: Individual
•
Filing: 1970-08-12
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Granted: 1972-02-15
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Expires: 1990-08-12
Abstract
Abstract A filtering tank for waste disposal systems with extension units positioned over it in telescoping relation extending to ground level and having a cover for access to the tank. The filtering tank has removable filter cages filled with particulate filtering material positioned in the fluid flow passage in the filtering tank between the inlet and outlet. Removable insulation extends across the top of the filtering tank in spaced relation above the filtering material.
Inventors
- 👤 Raymond F Sheda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:08
CPC Classifications
B; B01; B01D; B01D24/00; B01D24/02; B01D24/04; B01D24/46; B01D24/4668; B01D24/4689; B01D24/10; B01D24/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
114 words
In a waste disposal system having a septic tank and a dry well, the improvement comprising: a. a filtering tank having an inlet and an outlet and providing a fluid flow passage between the septic tank and the dry well, b. at least one extension unit positioned over and encompassing said filtering tank in mating relation, c. an openable top cover on said extension unit, d. a removable filter means disposed in the fluid flow passage in said filtering tank between said inlet and said outlet, said filter being spaced from said inlet, and e. removable heat-insulating means substantially coextensive with and extending across the top of said filtering tank above said filter means.
Claim 2
Dependent Claim
114 words
In a waste disposal system having a septic tank and a dry well, the improvement comprising: a. a filtering tank having an inlet and an outlet and providing a fluid flow passage between the septic tank and the dry well, b. at least one extension unit positioned over and encompassing said filtering tank in mating relation, c. an openable top cover on said extension unit, d. a removable filter means disposed in the fluid flow passage in said filtering tank between said inlet and said outlet, said filter being spaced from said inlet, and e. removable heat-insulating means substantially coextensive with and extending across the top of said filtering tank above said filter means.
Claim 3
Dependent Claim
146 words
In a waste disposal system having a septic tank and a dry well, the improvement comprising: a. a filtering tank having an inlet and an outlet and providing a fluid flow passage between the septic tank and the dry well, b. an extension sleeve positioned over and encompassing said filtering tank in telescoping relation, c. a top extension unit positioned over and encompassing said extension sleeve in telescoping relation, means sealing said filtering tank to said extension sleeve and said extension sleeve to said top extension unit, e. an openable top cover on said top extension unit, f. removable filter means disposed in said filtering tank in the fluid flow passage between said inlet and said outlet, said filter means being spaced from said inlet, and g. removable heat-insulating means substantially coextensive with and extending across the top of said filtering tank above said filter means.
Claim 4
Dependent Claim
146 words
In a waste disposal system having a septic tank and a dry well, the improvement comprising: a. a filtering tank having an inlet and an outlet and providing a fluid flow passage between the septic tank and the dry well, b. an extension sleeve positioned over and encompassing said filtering tank in telescoping relation, c. a top extension unit positioned over and encompassing said extension sleeve in telescoping relation, means sealing said filtering tank to said extension sleeve and said extension sleeve to said top extension unit, e. an openable top cover on said top extension unit, f. removable filter means disposed in said filtering tank in the fluid flow passage between said inlet and said outlet, said filter means being spaced from said inlet, and g. removable heat-insulating means substantially coextensive with and extending across the top of said filtering tank above said filter means.
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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) | 1975-02-14 | 1975-08-16 | 1976-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-14 | 1979-08-16 | 1980-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-14 | 1983-08-16 | 1984-02-15 | $7700.00 | Window Closed / Lapsed |