US4872308A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust device for working machine
Assignee: Kioritz Corp
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Filing: 1988-06-08
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Granted: 1989-10-10
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Expires: 2008-06-08
Abstract
Abstract An exhaust device for a working machine in which a mixing tubular member is disposed opposite to an outlet opening of the muffler through a space interposed between them, and an air-flow passage is provided to introduce a portion of pressurized air from a blower into the inside of an air guide wall on the outer periphery of the outlet opening.
Inventors
- 👤 Noboru Nagai
- 👤 Yoshisato Hashimoto
- 👤 Yoshihiko Tsuboike
- 👤 Noboru Kaito
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:46
CPC Classifications
F; F01; F01N; F01N13/00; F01N13/002; F01N13/08; F01N13/082; F01N3/00; F01N3/02; F01N3/05; F02; F02B; F02B63/00; F01N2230/00; F01N2230/06; F01N2590/00; F01N2590/06; F01N3/06; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
112 words
An exhaust device for a working machine comprising: an internal combustion engine mounted as a power source; a muffler connected to said internal combustion engine for discharging exhaust gas delivered from the internal combustion engine while damping its sound, said muffler having an outlet opening; a blower driven by said internal combustion engine; a mixing tubular member disposed opposite to the outlet opening of the muffler through a space interposed between the tubular member and the muffler; and an air-flow passage for introducing a portion of pressurized air from said blower into the inside of an annular air guide wall on the outer periphery of said outlet opening in a tangential direction.
Claim 2
Dependent Claim
112 words
An exhaust device for a working machine comprising: an internal combustion engine mounted as a power source; a muffler connected to said internal combustion engine for discharging exhaust gas delivered from the internal combustion engine while damping its sound, said muffler having an outlet opening; a blower driven by said internal combustion engine; a mixing tubular member disposed opposite to the outlet opening of the muffler through a space interposed between the tubular member and the muffler; and an air-flow passage for introducing a portion of pressurized air from said blower into the inside of an annular air guide wall on the outer periphery of said outlet opening in a tangential direction.
Claim 3
Dependent Claim
37 words
An exhaust device according to claim 1, further comprising a discharge opening disposed at a location opposite to the outlet end of said mixing tubular member defining an annular space for sucking air as tertiary cooling air.
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) | 1992-10-09 | 1993-04-10 | 1993-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-10-09 | 1997-04-10 | 1997-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-10-09 | 2001-04-10 | 2001-10-10 | $7700.00 | Window Closed / Lapsed |