Patent US3577968A successfully refreshed from Google Patents.
US3577968A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Centrifugal r.p.m. regulator for internal combustion engines
Assignee: Robert Bosch GmbH
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Filing: 1969-10-01
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Granted: 1971-05-11
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Expires: 1989-10-01
Abstract
Abstract In a centrifugal r.p.m. regulator for internal combustion engines, the governor sleeve is connected to a fuel quantity control member through a linkage assembly that includes an intermediate lever coupled to a manually operable lever to arbitrarily adjust said fuel quantity control member. The r.p.m. regulator includes a spring-loaded support arm against which the governor sleeve is adapted to abut after traveling a predetermined distance under the force exerted by the centrifugal weights as the engine r.p.m. increases. Beyond a predetermined r.p.m. the last-named force overcomes the force of the support lever spring thus permitting the governor sleeve to be further displaced, shifting thereby said control member to lessen the injected fuel quantities.
Inventors
- 👤 Heinrich Staudt
- 👤 Eberhard Hofmann
- 👤 Rolf Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:34
CPC Classifications
F; F02; F02D; F02D1/00; F02D1/02; F02D1/04; F02D1/045; F02D1/08; F02D1/10
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
197 words
In a centrifugal governor device for regulating the r.p.m. of an internal combustion engine, where said device is of the known type that includes (A) a governor sleeve displaceable as a function of the engine-r.p.m., (B) a linkage assembly connecting said governor sleeve with a fuel quantity control member to cause an r.p.m.-dependent displacement of the latter, (C) an intermediate lever forming part of said linkage assembly and (D) an arbitrarily settable operating lever connected to said intermediate lever to displace said fuel quantity control member at will, the improvement comprising: A. a support lever adapted to be abutted and displaced by said governor sleeve; B. a regulator spring in engagement with said support lever and urging the latter towards said governor sleeve; C. adjusting means associated with said support lever to vary the distance required for said governor sleeve to travel before abutting said support lever; D. adjusting means associated with said regulator spring to vary the force exerted by the latter on said support lever; and E. an idler spring in engagement with said support lever and said governor sleeve and exerting a force opposing a displacement of said governor sleeve towards said support lever.
Claim 2
Dependent Claim
197 words
In a centrifugal governor device for regulating the r.p.m. of an internal combustion engine, where said device is of the known type that includes (A) a governor sleeve displaceable as a function of the engine-r.p.m., (B) a linkage assembly connecting said governor sleeve with a fuel quantity control member to cause an r.p.m.-dependent displacement of the latter, (C) an intermediate lever forming part of said linkage assembly and (D) an arbitrarily settable operating lever connected to said intermediate lever to displace said fuel quantity control member at will, the improvement comprising: A. a support lever adapted to be abutted and displaced by said governor sleeve; B. a regulator spring in engagement with said support lever and urging the latter towards said governor sleeve; C. adjusting means associated with said support lever to vary the distance required for said governor sleeve to travel before abutting said support lever; D. adjusting means associated with said regulator spring to vary the force exerted by the latter on said support lever; and E. an idler spring in engagement with said support lever and said governor sleeve and exerting a force opposing a displacement of said governor sleeve towards said support lever.
Claim 3
Dependent Claim
29 words
An improvement as defined in claim 1, wherein said support lever is mounted on, and movable about a pivot remote from the path of travel of said governor sleeve.
Claim 4
Dependent Claim
25 words
An improvement as defined in claim 1, including adjusting means associated with said idler spring to vary the force exerted thereby on said governor sleeve.
Claim 5
Dependent Claim
66 words
An improvement as defined in claim 3, wherein said idler spring is a coil spring arranged in axial alignment with said governor sleeve, said support lever includes an opening through which said coil spring is adapted to extend, said support lever further includes a part that carries said adjusting means associated with said idler spring, said last-named adjusting means supports one end of said idler spring.
Claim 6
Dependent Claim
31 words
An improvement as defined in claim 1, wherein said adjusting means associated with said support lever is adapted to vary the position of rest of the latter to vary said distance.
Claim 7
Dependent Claim
24 words
An improvement as defined in claim 1, wherein said adjusting means associated with said support lever is adapted to reduce said distance to zero.
Claim 8
Dependent Claim
55 words
An improvement as defined in claim 2, wherein said regulator spring is a leaf spring mounted on, and movable about said pivot, said adjusting means associated with said regulator spring includes a fulcrum in engagement with, and adjustable along, said regulator spring to vary the preload force exerted by the latter on said support lever.
Claim 9
Dependent Claim
70 words
An improvement as defined in claim 7, including a bellcrank lever formed of two legs and movable about said pivot; means secured to said bellcrank lever and carrying said fulcrum; said fulcrum is in engagement with, and adjustable along one of said legs to vary the effective length thereof; the other of said legs is in engagement with an adjusting means adapted to rock said bellcrank lever about said pivot.
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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) | 1974-05-10 | 1974-11-09 | 1975-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-10 | 1978-11-09 | 1979-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-10 | 1982-11-09 | 1983-05-11 | $7700.00 | Window Closed / Lapsed |