US3937015A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pleated filter in the exhaust manifold
Assignee: Denso Corp
•
Filing: 1974-04-30
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Granted: 1976-02-10
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Expires: 1994-04-30
Abstract
Abstract This specification discloses an exhaust gas cleaning device which is intended for removing harmful substances from exhaust gases of internal combustion engine, especially for removing carbon particles or the like. The device has a body accomodating a filter element adapted to catch the particles in the exhaust gases. The device is attached to the engine as if it were an exhaust manifold so that the clogging particles are conveniently burned by hot gases, whereby the filter element is conveniently recovered.
Inventors
- 👤 Hajime Akado
- 👤 Yutaka Kawashima
- 👤 Akihide Yamaguchi
- 👤 Hideki Matsuura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/021; F01N3/031; F01N3/0211; F01N3/0217; F01N3/022; F01N3/023; F02; F02M; F02M26/00; F02M26/13; F02M26/22; F02M26/29; F02M26/32; F01N13/00; F01N13/14; F01N2240/00; F01N2240/20; F01N2330/00; F01N2330/06; F01N2330/12; F01N2390/00; F01N2390/02; F01N2410/00; F01N2410/06; F01N2470/00; F01N2470/16; F01N2470/18; F02B; F02B1/00; F02B1/02; F02B1/04; F02D; F02D41/00; F02D41/0025; F02D41/0047; F02D41/0065; F02M26/14; F02M26/15; F02M26/23; F02M26/27
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
165 words
An exhaust gas cleaning device for an internal combustion engine, comprising a casing adapted to be directly attached to the engine and having inlet ports corresponding in number to the number of cylinders of the engine from which exhaust gas is coupled to said device, said device including at least two outlets, said inlet ports each being adapted to be directly connected to a corresponding exhaust port of said cylinder; a tubular filtering element disposed in said casing to divide the space within said casing into two spaces, said filtering element being pleated circumferentially, one of said two spaces being communicated with one of said two outlets and with said inlet ports, the other of said two spaces being communicated with the other of said two outlets and being communicated through said filtering element with said one of the two spaces; and means connected to said one of the two outlets for controlling the amount of gas passing through said one of the two outlets.
Claim 2
Dependent Claim
165 words
An exhaust gas cleaning device for an internal combustion engine, comprising a casing adapted to be directly attached to the engine and having inlet ports corresponding in number to the number of cylinders of the engine from which exhaust gas is coupled to said device, said device including at least two outlets, said inlet ports each being adapted to be directly connected to a corresponding exhaust port of said cylinder; a tubular filtering element disposed in said casing to divide the space within said casing into two spaces, said filtering element being pleated circumferentially, one of said two spaces being communicated with one of said two outlets and with said inlet ports, the other of said two spaces being communicated with the other of said two outlets and being communicated through said filtering element with said one of the two spaces; and means connected to said one of the two outlets for controlling the amount of gas passing through said one of the two outlets.
Claim 3
Dependent Claim
28 words
An exhaust gas cleaning device as claimed in claim 1, wherein said controlling means is operative in response to the temperature of the exhaust gas from the engine.
Claim 4
Dependent Claim
25 words
An exhaust gas cleaning device as claimed in claim 1, wherein said controlling means is operative in response to the load condition of the engine.
Claim 5
Dependent Claim
29 words
An exhaust gas cleaning device as claimed in claim 1, wherein said one of the two spaces includes the space surrounded by the inner periphery of said filtering element.
Claim 6
Dependent Claim
30 words
An exhaust gas cleaning device as claimed in claim 1, wherein said the other of the two spaces includes the space surrounded by the inner periphery of said filtering element.
References Cited (Backward Citations)
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US3129078A
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US3340859A
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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) | 1979-02-09 | 1979-08-11 | 1980-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-02-09 | 1983-08-11 | 1984-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-02-09 | 1987-08-11 | 1988-02-10 | $7700.00 | Window Closed / Lapsed |