US3735567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine exhaust filter-muffler
Assignee: Individual
•
Filing: 1971-07-12
•
Granted: 1973-05-29
•
Expires: 1991-07-12
Abstract
Abstract A muffler having a filter housed in a compartment adjacent a tank containing gas cleaning water. Exhaust gas pressure is utilized to vapourize and circulate a gas-water mixture through the tank and over the filtering material in such a way as to improve the gas washing and filtering action and to prevent the unit from becoming clogged with the extracted contaminants.
Inventors
- 👤 C Viers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:28
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; B; B01; B01D; B01D47/00; B01D47/02; B01D47/021; B01D50/00; F01N3/021; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
192 words
A filter-muffler adapted for connection to the exhaust manifold of an internal combustion engine and comprising a casing having a peripheral wall and an end wall at each opposite end of said casing, an intermediate wall extending across the casing spaced from one end wall and providing a water tank therebetween, a perforated baffle extending across the casing near the water tank to provide a filter compartment near the other end wall and a pressure chamber near the intermediate wall, an outlet pipe connected to the filter compartment at a point remote from the perforated baffle, a quantity of lime rock in the filter compartment; an exhaust pipe extending longitudinally through one end wall, the water tank, and the intermediate wall; said exhaust pipe having an intake end and a discharge end within the pressure chamber, said discharge end having a plurality of nozzles directed away from the perforated baffle, a first tube connecting the pressure chamber near the intermediate wall to the water tank near said one end wall, and a second tube connecting the water tank near said one end wall to the filter compartment near said other end wall.
Claim 2
Dependent Claim
192 words
A filter-muffler adapted for connection to the exhaust manifold of an internal combustion engine and comprising a casing having a peripheral wall and an end wall at each opposite end of said casing, an intermediate wall extending across the casing spaced from one end wall and providing a water tank therebetween, a perforated baffle extending across the casing near the water tank to provide a filter compartment near the other end wall and a pressure chamber near the intermediate wall, an outlet pipe connected to the filter compartment at a point remote from the perforated baffle, a quantity of lime rock in the filter compartment; an exhaust pipe extending longitudinally through one end wall, the water tank, and the intermediate wall; said exhaust pipe having an intake end and a discharge end within the pressure chamber, said discharge end having a plurality of nozzles directed away from the perforated baffle, a first tube connecting the pressure chamber near the intermediate wall to the water tank near said one end wall, and a second tube connecting the water tank near said one end wall to the filter compartment near said other end wall.
Claim 3
Dependent Claim
18 words
A filter-muffler as claimed in claim 1, in which said filtering material is a quantity of lime rock.
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) | 1976-05-28 | 1976-11-27 | 1977-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-05-28 | 1980-11-27 | 1981-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-05-28 | 1984-11-27 | 1985-05-29 | $7700.00 | Window Closed / Lapsed |