Patent US3844748A successfully refreshed from Google Patents.
US3844748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydro-filtration apparatus
Assignee: Lee Raymond Organization Inc
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Filing: 1972-12-08
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Granted: 1974-10-29
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Expires: 1992-12-08
Abstract
Abstract Apparatus for the filtering of exhaust fumes from smoke stacks of furnaces and incinerators, in which the exhaust fumes are drawn through a tank containing a liquid and then drawn through wire screens and an activated charcoal bed by a motorized blower. The apparatus consists of the intake ducts, filtering tanks, filtering screens and charcoal bed, exhaust ducting and exhaust fan, together with the accessory apparatus which permits flushing of the liquid filtering tank and removal and replacement of the filtering screens and charcoal.
Inventors
- 👤 T Lanier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 12:19
CPC Classifications
B; B01; B01D; B01D53/00; B01D53/02; B01D53/04; B01D53/0407; B01D53/0415; B01D47/00; B01D47/02; B01D47/021; B01D2253/00; B01D2253/10; B01D2253/102; B01D2258/00; B01D2258/02; B01D2258/0283; B01D2259/00; B01D2259/40; B01D2259/40083; B01D2259/40084; B01D53/0438; Y; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
355 words
Apparatus for the filtering and dissolving of impurities in the exhaust fumes of a furnace or incinerator, comprising a wash tank which is adaptable for containing a liquid wash solution, with piping to lead the exhaust fumes into the wash tank below the normal level of the wash solution, together with a filtering screen mounted above the normal liquid level of the wash solution in the wash tank, and mounted to the housing which projects above the wash tank so as to filter all exhaust fumes which flow out of the wash tank, and a bed of charcoal supported on said filtering screen and supported by the said housing so as to filter all exhaust fumes which have flowed through said filter screen, together with piping connected to the housing above the location of the top of the charcoal bed, which piping leads to an exhaust blower driven by a motor which draws the exhaust fumes through the apparatus and exhausts the washed and cleaned exhaust fumes to an exhaust duct, with the filteration section of the apparatus, comprising the filtering screens and the charcoal bed, fastened together inside the said housing such that the filtration section may be removed from the housing for cleaning and replacement purposes, in which two or more filtering screens are mounted below the intake section of the charcoal bed and between the charcoal bed and the wash tank, and in which a filtering screen is mounted above the exhaust section of the charcoal bed so as to retain the charcoal from being drawn into the exhaust blower intake piping, in which the sides and bottom of the wash tank are surrounded by the hollow intake section of the apparatus, with said intake section connected by ducting to the exhaust flue of the furnace or incinerator and to the piping which leads the exhaust fumes into the wash tank, so that the wash solution contained in the wash tank is heated by the incoming exhaust fumes for the purpose of increasing the ability of the wash solution to dissolve, and retain in solution, chemicals contained in the incoming exhaust fumes.
Claim 2
Dependent Claim
355 words
Apparatus for the filtering and dissolving of impurities in the exhaust fumes of a furnace or incinerator, comprising a wash tank which is adaptable for containing a liquid wash solution, with piping to lead the exhaust fumes into the wash tank below the normal level of the wash solution, together with a filtering screen mounted above the normal liquid level of the wash solution in the wash tank, and mounted to the housing which projects above the wash tank so as to filter all exhaust fumes which flow out of the wash tank, and a bed of charcoal supported on said filtering screen and supported by the said housing so as to filter all exhaust fumes which have flowed through said filter screen, together with piping connected to the housing above the location of the top of the charcoal bed, which piping leads to an exhaust blower driven by a motor which draws the exhaust fumes through the apparatus and exhausts the washed and cleaned exhaust fumes to an exhaust duct, with the filteration section of the apparatus, comprising the filtering screens and the charcoal bed, fastened together inside the said housing such that the filtration section may be removed from the housing for cleaning and replacement purposes, in which two or more filtering screens are mounted below the intake section of the charcoal bed and between the charcoal bed and the wash tank, and in which a filtering screen is mounted above the exhaust section of the charcoal bed so as to retain the charcoal from being drawn into the exhaust blower intake piping, in which the sides and bottom of the wash tank are surrounded by the hollow intake section of the apparatus, with said intake section connected by ducting to the exhaust flue of the furnace or incinerator and to the piping which leads the exhaust fumes into the wash tank, so that the wash solution contained in the wash tank is heated by the incoming exhaust fumes for the purpose of increasing the ability of the wash solution to dissolve, and retain in solution, chemicals contained in the incoming exhaust fumes.
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) | 1977-10-28 | 1978-04-29 | 1978-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-28 | 1982-04-29 | 1982-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-28 | 1986-04-29 | 1986-10-29 | $7700.00 | Window Closed / Lapsed |