US3593499A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust muffler and purifier
Assignee: GENE A COOK
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Filing: 1969-04-11
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Granted: 1971-07-20
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Expires: 1989-04-11
Abstract
Abstract A unitary combined muffler and air purifier for internal combustion engine exhaust systems having a replaceable canister for charcoal chunks or the like and other replaceable filter components, together with a fan to overcome back pressure in the unit. The device is characterized by simplicity, economy of construction, durability, minimum weight and ease of maintenance.
Inventors
- 👤 Herbert E Kile
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 14:51
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N13/00; F01N13/009; F01N13/0097; F01N3/02; F01N3/021; F01N3/033; F01N2230/00; F01N2230/02; F01N2240/00; F01N2240/20; F01N2330/00; F01N2330/08; F01N2330/10; F01N2370/00; F01N2370/40; F01N2450/00; F01N2450/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y10; Y10S; Y10S55/00; Y10S55/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
323 words
An exhaust muffler and purifier unit comprising an exterior cylindrical shell having one open end and having an opposite end wall, an exhaust pipe section of reduced diameter connected centrally in said end wall of the shell and adapted for connection externally of said end wall with an exhaust pipe, a conically flared enlargement connected with said pipe section within the shell near said end wall and extending to the sidewall of the shell and having its forward end secured to the sidewall of the shell substantially forwardly of the shell and wall, an electric motor disposed within the shell centrally near and forwardly of the flared enlargement and having a rotor at its forward end including plural radial impeller blades whose tips extend close to the bore of the shell, radial bracket means supporting the motor and anchoring it to the sidewall of the shell between said blades and enlargement, a rearwardly tapering conical heat shield secured to the bracket means and substantially covering the motor and projecting concentrically into the flared enlargement and spaced therefrom so as to form a flaring annular passage around the motor for exhaust gases, said impeller blades disposed immediately forwardly of the outlet of said annular passage around said motor, an abutment ring in the shell near its longitudinal center forwardly of the impeller blades, a first removable filter pad within the shell at the forward side of the abutment ring, a second filtering and cooling element removably mounted within the shell forwardly of said first filter pad and substantially contacting the latter, a cylindrical canister containing gas-purifying charcoal elements disposed removably in the shell immediately forwardly of said second filtering element and having perforated end walls and extending substantially to the forward open end of the shell, and a tapering forward end cover member detachably secured to the shell and having a forward reduced diameter pipe extension adapted to be coupled with an exhaust tailpipe.
Claim 2
Dependent Claim
323 words
An exhaust muffler and purifier unit comprising an exterior cylindrical shell having one open end and having an opposite end wall, an exhaust pipe section of reduced diameter connected centrally in said end wall of the shell and adapted for connection externally of said end wall with an exhaust pipe, a conically flared enlargement connected with said pipe section within the shell near said end wall and extending to the sidewall of the shell and having its forward end secured to the sidewall of the shell substantially forwardly of the shell and wall, an electric motor disposed within the shell centrally near and forwardly of the flared enlargement and having a rotor at its forward end including plural radial impeller blades whose tips extend close to the bore of the shell, radial bracket means supporting the motor and anchoring it to the sidewall of the shell between said blades and enlargement, a rearwardly tapering conical heat shield secured to the bracket means and substantially covering the motor and projecting concentrically into the flared enlargement and spaced therefrom so as to form a flaring annular passage around the motor for exhaust gases, said impeller blades disposed immediately forwardly of the outlet of said annular passage around said motor, an abutment ring in the shell near its longitudinal center forwardly of the impeller blades, a first removable filter pad within the shell at the forward side of the abutment ring, a second filtering and cooling element removably mounted within the shell forwardly of said first filter pad and substantially contacting the latter, a cylindrical canister containing gas-purifying charcoal elements disposed removably in the shell immediately forwardly of said second filtering element and having perforated end walls and extending substantially to the forward open end of the shell, and a tapering forward end cover member detachably secured to the shell and having a forward reduced diameter pipe extension adapted to be coupled with an exhaust tailpipe.
References Cited (Backward Citations)
US2781165A
Cited
US3061416A
Cited
GB968149A
Cited
US3163256A
Cited
US3177650A
Cited
US3224171A
Cited
US3227241A
Cited
US3406501A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |