US5230228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller for operation of washing machine
Assignee: Hitachi Ltd
•
Filing: 1991-04-11
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Granted: 1993-07-27
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Expires: 2011-04-11
Abstract
Abstract The quality and quantity of clothes to be washed are measured with a detecting unit, the measured values are referenced to cloth quantity and quality Fuzzy functions to control the strength of wash current, wash time, and rinse time so as to be suitable for the quantity and type of clothes to be washed.
Inventors
- 👤 Shigeharu Nakano
- 👤 Tamotu Shikamori
- 👤 Isao Hiyama
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:42
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/14; D06F34/18; D06F2103/00; D06F2103/02; D06F2103/04; D06F2103/18; D06F2103/38; D06F2105/00; D06F2105/02; D06F2105/56; D06F2105/58; Y; Y10; Y10S; Y10S706/00; Y10S706/90
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
106 words
A controller for controlling an operation of a washing machine, by utilizing a detected quantity of clothes to be washed and a detected quality of clothes to be washed, said controller comprising means for defining a first region corresponding to a clothes quantity by a first Fuzzy function and the detected quantity of clothes and means for defining a second region corresponding to a cloth quality by a second Fuzzy function and the detected quality of clothes, and means for composing said first region and second region together to control a strength of water current, a wash time, a rinse time, and a water extract time.
Claim 2
Dependent Claim
106 words
A controller for controlling an operation of a washing machine, by utilizing a detected quantity of clothes to be washed and a detected quality of clothes to be washed, said controller comprising means for defining a first region corresponding to a clothes quantity by a first Fuzzy function and the detected quantity of clothes and means for defining a second region corresponding to a cloth quality by a second Fuzzy function and the detected quality of clothes, and means for composing said first region and second region together to control a strength of water current, a wash time, a rinse time, and a water extract time.
Claim 3
Dependent Claim
36 words
A controller for controlling the operation of a washing machine according to claim 1, wherein said strength of water current is controlled in accordance with an on-time and off-time of a motor of said washing machine.
Claim 4
Dependent Claim
30 words
A controller for controlling the operation of a washing machine according to claim 1, wherein said strength of water current is controlled in accordance with the speed of a motor.
Claim 5
Dependent Claim
82 words
A controller for controlling the operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, means for calculating an on-time of a rotary vane for washing and rinsing, a wash time and a rinse time by utilizing a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed and a quality Fuzzy function corresponding to said detected quality of clothes to be washed.
Claim 6
Dependent Claim
82 words
A controller for controlling the operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, means for calculating an on-time of a rotary vane for washing and rinsing, a wash time and a rinse time by utilizing a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed and a quality Fuzzy function corresponding to said detected quality of clothes to be washed.
Claim 7
Dependent Claim
78 words
A controller for controlling an operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, and means for calculating strength of a wash current, a wash time, and a rinse time by utilizing a quality Fuzzy function corresponding to said detected quality of clothes to be washed and a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed.
Claim 8
Dependent Claim
78 words
A controller for controlling an operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, and means for calculating strength of a wash current, a wash time, and a rinse time by utilizing a quality Fuzzy function corresponding to said detected quality of clothes to be washed and a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed.
Claim 9
Dependent Claim
80 words
A controller for controlling an operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, and means for calculating a strength of a wash current, a wash time, and a washing water level by utilizing a quality Fuzzy function corresponding to said detected quality of clothes to be washed and a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed.
Claim 10
Dependent Claim
80 words
A controller for controlling an operation of a washing machine, said controller comprising means for detecting a quantity of clothes to be washed and a quality of clothes to be washed, and means for calculating a strength of a wash current, a wash time, and a washing water level by utilizing a quality Fuzzy function corresponding to said detected quality of clothes to be washed and a quantity Fuzzy function corresponding to said detected quantity of clothes to be washed.
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) | 1996-07-26 | 1997-01-25 | 1997-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-07-26 | 2001-01-25 | 2001-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-07-26 | 2005-01-25 | 2005-07-27 | $7700.00 | Window Closed / Lapsed |