US3563331A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for automatically running automotive vehicles at a set speed
Assignee: Denso Corp
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Filing: 1968-09-19
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Granted: 1971-02-16
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Expires: 1988-09-19
Abstract
Abstract An apparatus for automatically running an automotive vehicle at a set speed, which is so designed that the speed of the vehicle running at a set speed can be accelerated or decelerated temporarily optionally without releasing the speed control system, said apparatus including two self-restoring switches located in the driver''s cabin, one of said switches being inserted in an electric control circuit in such a manner that in a closed position of the switch a signal is given to the speed control system, which always causes the speed of the vehicle to be apparently lower than the set speed independently of the actual speed of the vehicle and the set speed, and another one of said switches being inserted in the electric control circuit in such a manner that in a closed position of the switch a signal is given to the speed control system, which always causes the speed of the vehicle to be apparently higher than the set speed independently of the actual speed of the vehicle and the set speed.
Inventors
- 👤 Takaaki Kato
- 👤 Kenji Takeshita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:48
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/30; B; B60; B60K; B60K31/00; B60K31/02; B60K31/04; B60K31/042; F02D9/00; F02D2700/00; F02D2700/02; F02D2700/0217; F02D2700/0225; F02D2700/0228; F02D2700/023; F02D2700/0238
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
185 words
An apparatus for automatically running an automotive vehicle at a set speed, wherein the vehicle''s speed is regulated by a throttle valve, said apparatus comprising: a generator for detecting the actual speed of said automotive vehicle and for producing a corresponding running speed signal at output terminals of said generator; a running speed setting circuit for producing a signal for setting the desired speed of said automotive vehicle; a servomechanism for regulating the positioning of said throttle valve; a differential amplifier for controlling the operation of said servomechanism by comparing the actual running speed signal from said generator with the desired speed signal from said running speed setting circuit; a feed back circuit for producing an output signal corresponding to the position of said servomechanism and for feeding said output signal back to an input of said differential amplifier; an accelerating switch for stopping said signal from said generator whenever it is desired to increase the speed of said automotive vehicle; and a decelerating switch for stopping an input to said differential amplifier whenever it is desired to decrease the speed of said automotive vehicle.
Claim 2
Independent Claim
185 words
An apparatus for automatically running an automotive vehicle at a set speed, wherein the vehicle''s speed is regulated by a throttle valve, said apparatus comprising: a generator for detecting the actual speed of said automotive vehicle and for producing a corresponding running speed signal at output terminals of said generator; a running speed setting circuit for producing a signal for setting the desired speed of said automotive vehicle; a servomechanism for regulating the positioning of said throttle valve; a differential amplifier for controlling the operation of said servomechanism by comparing the actual running speed signal from said generator with the desired speed signal from said running speed setting circuit; a feed back circuit for producing an output signal corresponding to the position of said servomechanism and for feeding said output signal back to an input of said differential amplifier; an accelerating switch for stopping said signal from said generator whenever it is desired to increase the speed of said automotive vehicle; and a decelerating switch for stopping an input to said differential amplifier whenever it is desired to decrease the speed of said automotive vehicle.
Claim 3
Dependent Claim
30 words
An apparatus as claimed in claim 1 wherein said accelerating switch comprises normally open contacts connected between said comprises normally open contacts connected between said output terminals of said generator.
Claim 4
Dependent Claim
43 words
An apparatus as claimed in claim 1 wherein: said differential amplifier circuit comprises two transistors connected in a common emitter configuration, and said decelerating switch has normally open contacts connected between the commonly connected emitters and one of the bases of said transistors.
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |