Patent US5074266A successfully refreshed from Google Patents.
US5074266A
Expired / Lapsed
US
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Throttle-valve apparatus for an internal combustion machine
Assignee: Hella GmbH and Co KGaA
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Filing: 1990-11-05
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Granted: 1991-12-24
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Expires: 2010-11-05
Abstract
Abstract A throttle-valve apparatus involves a throttle valve (D) mounted on a shaft (W) which is coupled to a cable line (S) for rotating the shaft. The apparatus includes a first engaging detent, or stop, mechanism, (A1) having a movable engagement point between the cable line and the shaft, a first coupling apparatus (K1) between the cable line and the shaft, and a positioning motor (M) which creates a throttle-valve apparatus whose operation, in a particular uncomplicated and cost effective manner, increases safety and dependability during operation of a motor vehicle. When the positioning motor is driven to drive the throttle valve it is relieved from overcoming a return force of a spring by the first coupling apparatus which includes a first coupling having a changeable or cancellable driving linkage whereby a driving engagement of the linkage is greatest in an immediate area of the movable engagement point of the detent mechanism.
Inventors
- 👤 Lothar Kuhn
- 👤 Manfred Bartscht
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:30
CPC Classifications
F; F02; F02D; F02D11/00; F02D11/06; F02D11/10; F02D11/107
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
104 words
In a throttle-valve apparatus for an internal combustion machine of a type comprising a throttle valve mounted on a shaft coupled to linkage means for rotating said shaft, said linkage means including a return spring, there being a first detent mechanism between the linkage means and the shaft with a movable first engaging point, a first coupling apparatus between the linkage means and the shaft and a positioning motor, the improvement wherein: the first coupling apparatus includes a coupling which has a changeable driving linkage whereby a driving engagement of the linkage is greatest in an immediate area of the movable first engaging point.
Claim 2
Dependent Claim
104 words
In a throttle-valve apparatus for an internal combustion machine of a type comprising a throttle valve mounted on a shaft coupled to linkage means for rotating said shaft, said linkage means including a return spring, there being a first detent mechanism between the linkage means and the shaft with a movable first engaging point, a first coupling apparatus between the linkage means and the shaft and a positioning motor, the improvement wherein: the first coupling apparatus includes a coupling which has a changeable driving linkage whereby a driving engagement of the linkage is greatest in an immediate area of the movable first engaging point.
Claim 3
Dependent Claim
32 words
In a throttle-valve apparatus as in claim 1 wherein a second coupling apparatus is arranged between the shaft and a positioning motor which can drivingly couple the positioning motor to the shaft.
Claim 4
Dependent Claim
25 words
In a throttle-valve apparatus as in claim 2 wherein the second coupling apparatus comprises a spring arranged between the positioning motor M and the shaft.
Claim 5
Dependent Claim
56 words
In a throttle-valve apparatus as in claim 3 wherein there is a second detent between the positioning motor and the shaft having a second engaging point and wherein the second coupling apparatus includes a coupling which has a changeable driving linkage whereby a driving engagement is greatest in an immediate area of the second engaging point.
Claim 6
Dependent Claim
25 words
In a throttle-valve apparatus as in claim 4 wherein at least one of the first and second couplings is respectively formed as a rest-slide coupling.
Claim 7
Dependent Claim
25 words
In a throttle-valve apparatus as in claim 5 wherein the rest-slide coupling comprises a two arm omega formed spring which engages depressions in a shaft.
Claim 8
Dependent Claim
21 words
In a throttle-valve apparatus as in claim 4 wherein at least one of the first and second couplings is actuatable pneumatically.
Claim 9
Dependent Claim
16 words
In a throttle-valve apparatus as in claim 6 wherein the positioning motor manipulates an actual-value potentiometer.
Claim 10
Dependent Claim
17 words
In a throttle-valve apparatus as in claim 8 wherein the linkage means includes a nominal value potentiometer.
Claim 11
Dependent Claim
24 words
In a throttle-valve apparatus as in claim 9 wherein a diagnostic apparatus is coupled to the actual-value potentiometer and to the nominal value potentiometer.
Claim 12
Dependent Claim
20 words
In a throttle-valve apparatus as in claim 10 wherein a speed controller activation apparatus is coupled to the linkage means.
Claim 13
Dependent Claim
33 words
In a throttle-valve apparatus as in claim 11 wherein the speed controller activation apparatus is coupled to the linkage means via a third coupling apparatus which includes a coupling with changeable driving linkage.
Claim 14
Dependent Claim
24 words
In a throttle-valve apparatus as in claim 12 wherein a third detent is arranged between the speed controller activation apparatus and the linkage means.
Claim 15
Dependent Claim
19 words
In a throttle-valve apparatus as in claim 13 wherein the linkage means includes a tether attached to a disc.
Claim 16
Dependent Claim
21 words
In a throttle-valve apparatus as in claim 10 wherein a second detent is arranged between the shaft and the positioning motor.
Claim 17
Dependent Claim
21 words
In a throttle-valve apparatus as in claim 4 wherein at least one of the first and second couplings is actuatable electrically.
Claim 18
Dependent Claim
21 words
In a throttle-valve apparatus as in claim 4 wherein at least one of the first and second couplings is actuatable hydraulically.
Claim 19
Dependent Claim
28 words
In a throttle-valve apparatus as in claim 11 wherein the speed controller activation apparatus is coupled to the linkage means via a spring apparatus with changeable driving linkage.
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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) | 1994-12-23 | 1995-06-24 | 1995-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-23 | 1999-06-24 | 1999-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-23 | 2003-06-24 | 2003-12-24 | $7700.00 | Window Closed / Lapsed |