Patent US3575257A successfully refreshed from Google Patents.
US3575257A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vehicle speed control device
Assignee: Dana Inc
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Filing: 1969-02-12
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Granted: 1971-04-20
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Expires: 1989-02-12
Abstract
Abstract A speed control unit is provided wherein two input speed signals are received mechanically, one being a referenced speed and the other being the actual speed, and these speeds differenced so as to provide an output signal which can be utilized to accelerate or decelerate an engine which is to be automatically controlled.
Inventors
- 👤 Richard J Wojcikowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:29
CPC Classifications
G; G05; G05D; G05D13/00; B; B60; B60K; B60K31/00; B60K31/02; F; F02; F02D; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0238; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19023; Y10T74/19051
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
200 words
A device for adjustably controlling the speed of operation of an internal combustion engine which comprises: (a) a variable speed first input means, (b) a first drive means drivingly connected to said first input means, (c) a second input means having its speed related to the speed of said internal combustion engine, (d) a second drive means drivingly connected to said second input means, (e) a speed differencing means connected to said first and second drive means in a driven relationship, (f) a valve plate means controlled by said speed differencing means, (g) a vacuum source from said internal combustion engine, (h) a vacuum chamber adapted to vary the speed of said internal combustion engine when connected with said vacuum source, (i) a valve body having three ports therein, the first of said ports connected to said vacuum source, the second of said ports being connected to said vacuum chamber, and the third of said ports being open to the atmosphere, and (j) said valve plate means connecting said first and second ports when increased speed of said internal combustion engine is required, and connecting said second and third ports when decreased speed of the internal combustion engine is required.
Claim 2
Independent Claim
200 words
A device for adjustably controlling the speed of operation of an internal combustion engine which comprises: (a) a variable speed first input means, (b) a first drive means drivingly connected to said first input means, (c) a second input means having its speed related to the speed of said internal combustion engine, (d) a second drive means drivingly connected to said second input means, (e) a speed differencing means connected to said first and second drive means in a driven relationship, (f) a valve plate means controlled by said speed differencing means, (g) a vacuum source from said internal combustion engine, (h) a vacuum chamber adapted to vary the speed of said internal combustion engine when connected with said vacuum source, (i) a valve body having three ports therein, the first of said ports connected to said vacuum source, the second of said ports being connected to said vacuum chamber, and the third of said ports being open to the atmosphere, and (j) said valve plate means connecting said first and second ports when increased speed of said internal combustion engine is required, and connecting said second and third ports when decreased speed of the internal combustion engine is required.
Claim 3
Dependent Claim
27 words
A device for adjustably controlling the speed of an internal combustion engine according to claim 1, wherein said first input means is a variable speed electric motor.
Claim 4
Dependent Claim
46 words
A device for adjustably controlling the speed of an internal combustion engine according to claim 1, wherein said speed differencing means comprises a plurality of bevel gear differentials whose direction of output rotation is dependent on the relative speeds between said first and second drive means.
Claim 5
Dependent Claim
34 words
A device for adjustably controlling the speed of an internal combustion engine according to claim 1, wherein said valve plate means includes a V-shaped opening for communicating with said first, second and third ports.
Claim 6
Independent Claim
327 words
A device for adjustably controlling the speed of an internal combustion engine which comprises: (a) a housing, (b) a variable speed electric motor mounted rigidly to said housing and having a shaft extending into said housing, (c) a rotary input means extending into the end of said housing opposite said electric motor, (d) a first bevel gear differential within said housing, having a first and a second coaxial side gear and a first set of pinion mates, said first side gear fixedly attached to said shaft of said electric motor and rotatable therewith, said second side gear fixedly attached to said rotary input means and rotatable therewith, (e) a first carrier within said housing attached to said first set of pinion mates and adapted to rotate therewith about said axis of said side gears, (f) a second bevel gear differential within said housing and coaxial with said first bevel gear differential, said second bevel gear differential having third and fourth coaxial side gears and a second set of pinion mates, said third side gear fixedly attached to said first carrier and rotatable therewith about said axis of said side gears, (g) a valve plate attached to said fourth side gear and rotatable therewith about said axis of the side gear, (h) a fluidic pressure source, (i) an expansible chamber means adapted to vary the speed of said internal combustion engine, (j) a valve body adjacent to said valve plate and having three ports, the first of said ports communicating with said pressure source, the second of said ports communicating with said expansible chamber means, and the third of said ports vented to the atmosphere, (k) said valve body and said valve plate cooperating together to place said first and second ports in increased communication when an increased speed of said internal combustion engine is required and to place said second and third ports in increased communication when a decreased speed for said internal combustion engine is required.
Claim 7
Independent Claim
327 words
A device for adjustably controlling the speed of an internal combustion engine which comprises: (a) a housing, (b) a variable speed electric motor mounted rigidly to said housing and having a shaft extending into said housing, (c) a rotary input means extending into the end of said housing opposite said electric motor, (d) a first bevel gear differential within said housing, having a first and a second coaxial side gear and a first set of pinion mates, said first side gear fixedly attached to said shaft of said electric motor and rotatable therewith, said second side gear fixedly attached to said rotary input means and rotatable therewith, (e) a first carrier within said housing attached to said first set of pinion mates and adapted to rotate therewith about said axis of said side gears, (f) a second bevel gear differential within said housing and coaxial with said first bevel gear differential, said second bevel gear differential having third and fourth coaxial side gears and a second set of pinion mates, said third side gear fixedly attached to said first carrier and rotatable therewith about said axis of said side gears, (g) a valve plate attached to said fourth side gear and rotatable therewith about said axis of the side gear, (h) a fluidic pressure source, (i) an expansible chamber means adapted to vary the speed of said internal combustion engine, (j) a valve body adjacent to said valve plate and having three ports, the first of said ports communicating with said pressure source, the second of said ports communicating with said expansible chamber means, and the third of said ports vented to the atmosphere, (k) said valve body and said valve plate cooperating together to place said first and second ports in increased communication when an increased speed of said internal combustion engine is required and to place said second and third ports in increased communication when a decreased speed for said internal combustion engine is required.
Claim 8
Dependent Claim
32 words
A device for adjustably controlling the speed of an internal combustion engine according to claim 5, having a spur gear reduction set intermediate said variable speed motor and said first side gear.
Claim 9
Dependent Claim
27 words
A device for adjustably controlling the speEd of an internal combustion engine according to claim 5, including means for restricting the rotational movement of said valve plate.
Claim 10
Dependent Claim
40 words
A device for adjustably controlling the speed of an internal combustion engine according to claim 7, wherein said means to restrict the rotational movement of said valve plate comprises a pair of spaced pin means mounted with said valve body.
Claim 11
Dependent Claim
35 words
A device for adjustably controlling the speed of an internal combustion engine as set out in claim 5 wherein a dump valve means is disposed between said fluidic pressure source and said expansible chamber means.
Claim 12
Dependent Claim
43 words
A device for adjustably controlling the speed of an internal combustion engine as set out in claim 9 wherein electromagnetic means are provided for controlling said dump valve means, said electromagnetic means being actuated by a circuit including a silicon controlled rectifier means.
Claim 13
Dependent Claim
35 words
A device for adjustably controlling the speed of an internal combustion engine as set out in claim 10 wherein said circuit means also includes a speed set means and a brake actuated circuit interrupting means.
Claim 14
Dependent Claim
74 words
A speed control device including; (a) a variable, settable first speed input means, (b) a first drive means drivingly connected to said first input means, (c) a second speed input means having a speed regulated to the speed to be controlled, (d) a second drive means drivingly connected to said second input means, (e) a planetary differencing means controlling a valve means, (f) said valve means imposing a varying pressure on a servo bellows.
Claim 15
Dependent Claim
74 words
A speed control device including; (a) a variable, settable first speed input means, (b) a first drive means drivingly connected to said first input means, (c) a second speed input means having a speed regulated to the speed to be controlled, (d) a second drive means drivingly connected to said second input means, (e) a planetary differencing means controlling a valve means, (f) said valve means imposing a varying pressure on a servo bellows.
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) | 1974-04-19 | 1974-10-19 | 1975-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-19 | 1978-10-19 | 1979-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-19 | 1982-10-19 | 1983-04-20 | $7700.00 | Window Closed / Lapsed |