Patent US6320341B1 successfully refreshed from Google Patents.
US6320341B1
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US
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Control device for movable member
Assignee: Aisin Corp
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Filing: 1999-10-29
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Granted: 2001-11-20
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Expires: 2019-10-29
Abstract
Abstract A control device for a movable member includes a DC motor for establishing position transfer of the movable member in such a manner that after a first position of the movable member is stored in a memory, even if the movable member is at a second position, the moving member is returned to the first position only upon manipulating a switch and a motor pulse generating circuit generates a cut-off frequency which is variable depending on a ripple pulse frequency which is indicative of a rotational number of the motor.
Inventors
- 👤 Toshimitsu Oka
- 👤 Kohji Aoki
- 👤 Hideyuki Kanie
- 👤 Hitoshi Ishikawa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:56
CPC Classifications
B; B60; B60N; B60N2/00; B60N2/02; B60N2/0224; B60N2/0244; B60N2/0248; B60N2/02246
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
152 words
A control device for a movable member comprising: a DC motor for moving the movable member; a pulse shaping circuit for shaping a ripple pulse indicative of a rotational number of the DC motor; a clock generating circuit providing a clock signal according to the ripple pulse; a filter for eliminating noise in a current wave or a voltage wave of the DC motor depending on a cut-off frequency which is varied by the clock signal; wherein the pulse shaping circuit shapes the ripple pulse according to the current wave or the voltage wave of the DC motor; position calculation means for calculating a present position of the movable member according to the ripple pulse; memory means for storing a desired position as a first position; and control means for controlling a drive of the DC motor to move the movable member from other than the first position to the first position.
Claim 2
Dependent Claim
152 words
A control device for a movable member comprising: a DC motor for moving the movable member; a pulse shaping circuit for shaping a ripple pulse indicative of a rotational number of the DC motor; a clock generating circuit providing a clock signal according to the ripple pulse; a filter for eliminating noise in a current wave or a voltage wave of the DC motor depending on a cut-off frequency which is varied by the clock signal; wherein the pulse shaping circuit shapes the ripple pulse according to the current wave or the voltage wave of the DC motor; position calculation means for calculating a present position of the movable member according to the ripple pulse; memory means for storing a desired position as a first position; and control means for controlling a drive of the DC motor to move the movable member from other than the first position to the first position.
Claim 3
Dependent Claim
51 words
A control device as set forth in claim 1 , further comprising: correction means for correcting the present position according to a correction number as a predetermine distance of the movable member which moves by an inertia action of the DC motor when the drive of the DC motor is stopped.
Claim 4
Dependent Claim
24 words
A control device as set forth in claim 2 , wherein the correction number is set based on rotational conditions of the DC motor.
Claim 5
Dependent Claim
27 words
A control device as set forth in claim 2 , wherein the correction number is set based on a power source voltage applied to the DC motor.
Claim 6
Dependent Claim
140 words
A control device for a movable member comprising: a DC motor for moving the movable member; a pulse shaping circuit for shaping a ripple pulse indicative of the rotational number of the DC motor according to a current wave or a voltage wave of the DC motor; position calculation means for calculating a present position of the movable member according to the ripple pulse; memory means for storing a desired position as a first position; control means for controlling a drive of the DC motor to move the movable member from other than the first position to the first position; and correction means for correcting the present position according to a correction number as a predetermine distance of the movable member which moves by an inertia action of the DC motor when the drive of the DC motor is stopped.
Claim 7
Dependent Claim
140 words
A control device for a movable member comprising: a DC motor for moving the movable member; a pulse shaping circuit for shaping a ripple pulse indicative of the rotational number of the DC motor according to a current wave or a voltage wave of the DC motor; position calculation means for calculating a present position of the movable member according to the ripple pulse; memory means for storing a desired position as a first position; control means for controlling a drive of the DC motor to move the movable member from other than the first position to the first position; and correction means for correcting the present position according to a correction number as a predetermine distance of the movable member which moves by an inertia action of the DC motor when the drive of the DC motor is stopped.
Claim 8
Dependent Claim
24 words
A control device as set forth in claim 5 , wherein the correction number is set based on rotational conditions of the DC motor.
Claim 9
Dependent Claim
27 words
A control device as set forth in claim 5 , wherein the correction number is set based on a power source voltage applied to the DC motor.
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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) | 2004-11-19 | 2005-05-21 | 2005-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2008-11-19 | 2009-05-21 | 2009-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2012-11-19 | 2013-05-21 | 2013-11-20 | $7700.00 | Window Closed / Lapsed |