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US3642259A Expired / Lapsed US ⏱️ 0.0 years remaining

Automobile exhaust filter

Assignee: Individual
•
Filing: 1969-07-23
•
Granted: 1972-02-15
•
Expires: 1989-07-23
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Abstract

Abstract A housing including an inlet opening and an outlet opening and adapted to be interposed in an exhaust system, such as an automotive exhaust system, and including internal baffles defining a tortuous passage extending therethrough from the inlet to the outlet. The housing further includes a liquid sump through which gases moving through the housing must pass as well as a filter body of activated charcoal or the like through which the gases must also pass. In one form of the invention exhaust gases are drawn through the housing by a vehicle motor-driven vacuum pump and in a second form an electric motor-driven vacuum pump is disposed within the outlet end of the housing for drawing the exhaust gases through the housing. In the first and second form, a vacuum relief valve is disposed upstream from the liquid sump for relieving excess reduction of gas pressures above the sump.

Inventors

  • 👤 Carl L Bowden

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-29 05:41
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/04; F01N2370/00; F01N2370/40; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30

Claims Analysis

Total Claims: 7
Claim 1
Independent Claim 235 words
A housing including an inlet opening and an outlet opening and adapted to be interposed in an exhaust system, said housing including internal baffle means defining a tortuous passage extending therethrough from said inlet to said outlet and a wet sump intermediate the opposite ends of said passage through which gases moving through said passage are forced to be bubbled, said housing being elongated and including top and bottom walls, said inlet and outlet openings opening into upper portions of the opposite ends of said housing, said baffle means including first, second and third transverse baffles disposed in said housing intermediate its opposite ends and spaced longitudinally of the housing from the inlet end to the outlet end thereof, said first and third baffles extending downwardly from the upper wall of said housing and terminating above the bottom wall thereof and said second baffle projecting upwardly from the bottom wall and terminating below the top wall, said sump being defined between the inlet end of said housing and said second baffle, said first baffle extending downwardly below the liquid level of said sump, said housing being constructed in upper downwardly and lower upwardly opening halves removably secured together, vertically spaced upper and lower horizontal apertured panels extending between the said second and third partitions, and filter material disposed between said panels, said upper and lower panels being supported from said upper and lower halves, respectively.
Claim 2
Dependent Claim 235 words
A housing including an inlet opening and an outlet opening and adapted to be interposed in an exhaust system, said housing including internal baffle means defining a tortuous passage extending therethrough from said inlet to said outlet and a wet sump intermediate the opposite ends of said passage through which gases moving through said passage are forced to be bubbled, said housing being elongated and including top and bottom walls, said inlet and outlet openings opening into upper portions of the opposite ends of said housing, said baffle means including first, second and third transverse baffles disposed in said housing intermediate its opposite ends and spaced longitudinally of the housing from the inlet end to the outlet end thereof, said first and third baffles extending downwardly from the upper wall of said housing and terminating above the bottom wall thereof and said second baffle projecting upwardly from the bottom wall and terminating below the top wall, said sump being defined between the inlet end of said housing and said second baffle, said first baffle extending downwardly below the liquid level of said sump, said housing being constructed in upper downwardly and lower upwardly opening halves removably secured together, vertically spaced upper and lower horizontal apertured panels extending between the said second and third partitions, and filter material disposed between said panels, said upper and lower panels being supported from said upper and lower halves, respectively.
Claim 3
Dependent Claim 29 words
The combination of claim 1 including a combustion engine having an exhaust system in which said housing is interposed, and including a vacuum pump driven from said combustion engine.
Claim 4
Dependent Claim 12 words
The combination of claim 1 wherein said filter material comprises activated charcoal.
Claim 5
Dependent Claim 22 words
The combination of claim 1 wherein said partitions each include upper and lower portions supported from said upper and lower halves, respectively.
Claim 6
Dependent Claim 58 words
The combination of claim 4 including vertically spaced upper and lower foraminous horizontal partitions extending between the upper portions of said first and second partitions with the lower partition spaced below said liquid level and the upper partition spaced above said liquid level, said upper and lower horizontal partitions being supported from said upper and lower halves, respectively.
Claim 7
Dependent Claim 75 words
The combination of claim 1 including a vacuum pump operatively associated with said outlet for creating a reduced pressure in said housing downstream from said wet sump, and a vacuum relief valve communicating with said passage upstream from said sump for relieving excess reduction of gas pressure downstream from said wet sump, said vacuum pump being disposed in said housing immediately upstream from said outlet opening, said vacuum pump being supported from said upper half.

References Cited (Backward Citations)

US1622692A Cited
US1782890A Cited
US1926433A Cited
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US2116718A Cited
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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

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