Patent US4042441A successfully refreshed from Google Patents.
Patent US3909778A successfully refreshed from Google Patents.
US3909778A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Driver training and gasoline saving device
Assignee: Individual
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Filing: 1974-05-03
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Granted: 1975-09-30
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Expires: 1994-05-03
Abstract
Abstract A device for use in conjunction with an internal combustion engine including operating means connected for actuation by engine manifold vacuum, an alarm associated with the operating means to be operated thereby, and fluid valve means connected between the operating means and engine manifold for controlling fluid pressure communicated therebetween.
Inventors
- 👤 Paul N Maria
- 👤 Albert C Conard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:19
CPC Classifications
F; F02; F02M; F02M19/00; F02M19/01; B; B60; B60Q; B60Q5/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
112 words
In an internal combustion engine including an inlet manifold connected in fluid communication between a carburetor and combustion chamber, the improvement comprising: vacuum actuable operating means, fluid conduit means having one end connected to said operating means and having its other end adapted for fluid communication with the manifold to actuate said operating means responsive to reduced manifold vacuum, audible alarm means operatively connected to said operating means to be operated by the latter responsive to undesired vacuum loss in the manifold, and valve means interposed in said fluid conduit means for selectively effecTing said fluid communication, whereby an operator is signaled by said alarm to minimize or eliminate undersired carburetor control.
Claim 2
Dependent Claim
112 words
In an internal combustion engine including an inlet manifold connected in fluid communication between a carburetor and combustion chamber, the improvement comprising: vacuum actuable operating means, fluid conduit means having one end connected to said operating means and having its other end adapted for fluid communication with the manifold to actuate said operating means responsive to reduced manifold vacuum, audible alarm means operatively connected to said operating means to be operated by the latter responsive to undesired vacuum loss in the manifold, and valve means interposed in said fluid conduit means for selectively effecTing said fluid communication, whereby an operator is signaled by said alarm to minimize or eliminate undersired carburetor control.
Claim 3
Dependent Claim
53 words
The improvement according to claim 1, in combination with atmosphere communication means connected to said fluid conduit means independently of the carburetor for reducing the vacuum to said operating means, and an adjustable valve connected in said atmosphere communication means for selective adjustment of said alarm operating means corresponding to the engine parameters.
Claim 4
Dependent Claim
30 words
The improvement according to claim 1, said valve means being operative to vary the effective restriction in said fluid conduit means for varying the response time of said operating means.
Claim 5
Dependent Claim
35 words
The improvement according to claim 1, said valve means comprising a three-way valve independent of the carburetor for communication of said fluid conduit means with the atmosphere for reducing the vacuum to said operating means.
Claim 6
Dependent Claim
35 words
The improvement according to claim 4, in combination with an additional adjustable valve for connection between said three-way valve and the atmosphere to regulate vacuum reduction to said operating means corresponding to the engine parameters.
Claim 7
Dependent Claim
32 words
The improvement according to claim 5, said operating means comprising normally distended chamber means resiliently collapsible under internal vacuum, said fluid conduit means being connected to the interior of said chamber means.
Claim 8
Dependent Claim
46 words
The improvement according to claim 6, in combination with an actuator on said chamber means for movement therewith, and an electrical switch located for operation by said actuator to be closed by distension of said chamber means, said switch being connected in circuit with said alarm.
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) | 1978-09-29 | 1979-03-31 | 1979-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-29 | 1983-03-31 | 1983-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-29 | 1987-03-31 | 1987-09-30 | $7700.00 | Window Closed / Lapsed |