US4690119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
EGR valve device of internal combustion engines of automobiles
Assignee: Mikuni Corp
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Filing: 1986-08-06
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Granted: 1987-09-01
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Expires: 2006-08-06
Abstract
Abstract In order that an EGR valve device for internal combustion engines of automobiles can be manufactured in a compact size and at a low cost and also that its valve member can be immediately brought to its valve-closing position whenever the driving motor of the device fails, the EGR valve device comprises a sector-shaped gear operatively coupled to a valve member urged to close the valve and capable of causing the valve member to make opening and closing movements, and a driving motor whose shaft of rotary member is disposed so as to intersect at right angles a plane containing the sector-shaped gear and is provided with a pinion meshed with the sector-shaped gear.
Inventors
- 👤 Hiroshi Makino
- 👤 Akio Sasaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:33
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/65; F02M26/66; F02M26/67; F02M26/52; F02M26/53; F02M26/54
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
117 words
An EGR valve device for internal combustion engines of automobiles, comprising: a valve body; a valve rod slidably borne on said valve body and having, at one end, a valve member capable of opening and closing an exhaust gas recirculation path and being urged to close the valve; a sector-shaped member rotatably supported on said valve body and operatively coupled to said valve rod and having a gear portion; and a driving motor secured to said valve body in such a way that its rotary member shaft intersects a plane containing said sector-shaped member at right angles, and having a pinion secured to said rotary member shaft and meshed with said gear portion of said sector-shaped member.
Claim 2
Dependent Claim
117 words
An EGR valve device for internal combustion engines of automobiles, comprising: a valve body; a valve rod slidably borne on said valve body and having, at one end, a valve member capable of opening and closing an exhaust gas recirculation path and being urged to close the valve; a sector-shaped member rotatably supported on said valve body and operatively coupled to said valve rod and having a gear portion; and a driving motor secured to said valve body in such a way that its rotary member shaft intersects a plane containing said sector-shaped member at right angles, and having a pinion secured to said rotary member shaft and meshed with said gear portion of said sector-shaped member.
Claim 3
Dependent Claim
44 words
An EGR valve device according to claim 1, in which: a solid lubricating agent is applied to the surface of the gear portion of said sector-shaped member, the surface of the rotary shaft for said sector-shaped member and the surface of said valve rod.
Claim 4
Dependent Claim
87 words
An EGR valve device according to claim 1, in which: the operative coupling between said valve rod and said sector-shaped member is performed by a flange provided on said valve rod and by a lever provided concentrically and integrally with said sector-shaped member and being engageable with said flange, said valve device further comprising: a stopper adjustably screwed to said valve body and engaging said sector-shaped member to adjust the relative position between said flange and said lever when said valve rod is at the valve-closing position.
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) | 1990-08-31 | 1991-03-02 | 1991-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-08-31 | 1995-03-02 | 1995-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-08-31 | 1999-03-02 | 1999-09-01 | $7700.00 | Window Closed / Lapsed |