US3628889A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulic injection time controlling device in fuel injection pumps
Assignee: Bosch Corp
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Filing: 1970-03-30
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Granted: 1971-12-21
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Expires: 1990-03-30
Abstract
Abstract A hydraulic injection time-controlling device comprising, a sleeve combined with drive and driven shafts, displacement of which sleeve changes phase between said shafts; a pilot valve in said drive shaft, which is moved in response to fluid pressure varied with speed of rotation, said sleeve being displaced by control of supply of pressure fluid acting on said sleeve due to the displacement of said pilot valve, and a spring between a spring seat connected to said sleeve and said pilot valve, the displacement of said sleeve being transmitted to said pilot valve through said spring.
Inventors
- 👤 Masayoshi Kobayashi
- 👤 Shiro Kaneko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:23
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/16; F02D1/18; F02D1/183; F02D2700/00; F02D2700/02; F02D2700/0269; F02D2700/0282; F02D2700/0284; F02D2700/0292
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
130 words
A hydraulic injection time-controlling device in fuel injection pumps for internal combustion engines comprising, a drive shaft; a driven shaft; a sleeve having a portion formed as a fluid motor and combined with said shafts, displacement of said sleeve being adapted to change phase between said shafts; a pilot valve in an axial hole of said drive shaft, said pilot valve being moved in response to fluid pressure varied with speed of rotation, said sleeve being displaced by control of supply amount of pressure fluid acting on said fluid motor of said sleeve due to the displacement of said pilot valve; and a spring between a spring seat connected to said sleeve and said pilot valve, the displacement of said sleeve being transmitted to said pilot valve through said spring.
Claim 2
Dependent Claim
130 words
A hydraulic injection time-controlling device in fuel injection pumps for internal combustion engines comprising, a drive shaft; a driven shaft; a sleeve having a portion formed as a fluid motor and combined with said shafts, displacement of said sleeve being adapted to change phase between said shafts; a pilot valve in an axial hole of said drive shaft, said pilot valve being moved in response to fluid pressure varied with speed of rotation, said sleeve being displaced by control of supply amount of pressure fluid acting on said fluid motor of said sleeve due to the displacement of said pilot valve; and a spring between a spring seat connected to said sleeve and said pilot valve, the displacement of said sleeve being transmitted to said pilot valve through said spring.
Claim 3
Dependent Claim
20 words
A hydraulic injection time-controlling device according to claim 1 wherein said sleeve is combined by helical splines with said shafts.
References Cited (Backward Citations)
FR978936A
Cited
US2754806A
Cited
US2882863A
Cited
US2919687A
Cited
US3013547A
Cited
US3051154A
Cited
US3147746A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |