Patent US5144819A successfully refreshed from Google Patents.
US5144819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controller of a washing machine
Assignee: Hitachi Ltd
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Filing: 1991-02-25
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Granted: 1992-09-08
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Expires: 2011-02-25
Abstract
Abstract A washing machine includes a washing and water-extracting tub, agitating blades disposed rotatably in the tub, a motor for rotating the tub or the agitating blades and a control unit for controlling operation of the motor and determining a quantity of clothes on the basis of a resistance of the clothes exerted on the agitating blades by the rotation of the agitating blades. The washing machine determines the quantity of clothes plural times while a water level is changed from a low water level to a high water level and makes calculation on the basis of the plurality of determination values to determine a kind of clothes or the quality of cloth so that the washing operation is controlled on the basis of the quantity of clothes and the determined quality of cloth.
Inventors
- 👤 Isao Hiyama
- 👤 Yoshio Niwase
- 👤 Yousuke Nagano
- 👤 Shigeharu Nakano
- 👤 Tamotu Shikamori
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:13
CPC Classifications
D; D06; D06F; D06F34/00; D06F34/14; D06F34/22; D06F34/18; D06F23/00; D06F23/04; D06F33/00; D06F33/30; D06F33/44; D06F37/00; D06F37/02; D06F37/12; D06F37/30; D06F37/40; D06F39/00; D06F39/08; D06F39/087; D06F2103/00; D06F2103/02; D06F2103/04; D06F2103/06; D06F2103/18; D06F2103/20; D06F2105/00; D06F2105/02; D06F2105/56; D06F2105/58
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
141 words
An operation controller of a washing machine comprising a washing tub, an agitating blade rotatably disposed in said washing tub, a motor for rotating said agitating blade and control means for controlling operation of said motor in accordance with a kind of clothes, wherein said control means includes measuring means for measuring a value representing a kind of clothes to be washed, said measuring means including rotation means for measuring a rotation of said agitating blade a plurality of times while a water level of the washing tub is changed starting from a low water level, resistance means for measuring resistance values of clothes exerted on said agitating blade from the rotation of said agitating blade as the water level is changed and calculation means for calculating the value representing the kind of clothes from the resistance values of the clothes.
Claim 2
Dependent Claim
141 words
An operation controller of a washing machine comprising a washing tub, an agitating blade rotatably disposed in said washing tub, a motor for rotating said agitating blade and control means for controlling operation of said motor in accordance with a kind of clothes, wherein said control means includes measuring means for measuring a value representing a kind of clothes to be washed, said measuring means including rotation means for measuring a rotation of said agitating blade a plurality of times while a water level of the washing tub is changed starting from a low water level, resistance means for measuring resistance values of clothes exerted on said agitating blade from the rotation of said agitating blade as the water level is changed and calculation means for calculating the value representing the kind of clothes from the resistance values of the clothes.
Claim 3
Dependent Claim
139 words
An operation controller of a washing machine comprising a washing tub, an agitating blade rotatably disposed in said washing tub, a motor for rotating said agitating blade and control means for controlling an operation of said motor, wherein said control means includes measuring means for measuring a value representing a kind of clothes to be washed, said measuring means including rotation means for measuring a rotation of said agitating blade a plurality of times while a water level of said washing tub is changed from a low water level to a predetermined water level, resistance means for measuring resistance values of clothes exerted on said agitating blade from the rotation of said agitating blade as the water level is changed and calculation means for calculating the value representing the kind of clothes from the resistance values of the clothes.
Claim 4
Dependent Claim
139 words
An operation controller of a washing machine comprising a washing tub, an agitating blade rotatably disposed in said washing tub, a motor for rotating said agitating blade and control means for controlling an operation of said motor, wherein said control means includes measuring means for measuring a value representing a kind of clothes to be washed, said measuring means including rotation means for measuring a rotation of said agitating blade a plurality of times while a water level of said washing tub is changed from a low water level to a predetermined water level, resistance means for measuring resistance values of clothes exerted on said agitating blade from the rotation of said agitating blade as the water level is changed and calculation means for calculating the value representing the kind of clothes from the resistance values of the clothes.
Claim 5
Dependent Claim
188 words
A washing controller of a washing machine including a washing and water-extracting tub, an agitating blade, a motor for driving the washing and water-extracting tub or the agitating blade and control means for controlling energization of said motor, wherein said control means includes measuring means for measuring a first value representing a kind of clothes to be washed, said measuring means including resistance means for measuring a resistance of clothes exerted on said agitating blade, determining means for measuring a second value representing a quantity of clothes from the resistance, optimum water level means for determining an optimum water level from the second value representing a quantity of the clothes, and calculation means for calculation of the first value representing the kind of clothes from measuring a plurality of second values representing the quantity of clothes, wherein the plurality of second values is measured by detecting the quantity of clothes plural times while a water level of the washing and water-extracting tub is changed from a minimum water level to a maximum water level and the calculation means calculates the kind of clothes by comparing the second values.
Claim 6
Dependent Claim
188 words
A washing controller of a washing machine including a washing and water-extracting tub, an agitating blade, a motor for driving the washing and water-extracting tub or the agitating blade and control means for controlling energization of said motor, wherein said control means includes measuring means for measuring a first value representing a kind of clothes to be washed, said measuring means including resistance means for measuring a resistance of clothes exerted on said agitating blade, determining means for measuring a second value representing a quantity of clothes from the resistance, optimum water level means for determining an optimum water level from the second value representing a quantity of the clothes, and calculation means for calculation of the first value representing the kind of clothes from measuring a plurality of second values representing the quantity of clothes, wherein the plurality of second values is measured by detecting the quantity of clothes plural times while a water level of the washing and water-extracting tub is changed from a minimum water level to a maximum water level and the calculation means calculates the kind of clothes by comparing the second values.
Claim 7
Dependent Claim
67 words
A washing controller of a washing machine according to claim 3, wherein the determining means measures the second value representing the quantity of clothes at a minimum water level and a maximum water level and the calculation means calculates the first value representing the kind of clothes from the quantity of clothes at the minimum water level and the quantity of clothes at the maximum water level.
Claim 8
Dependent Claim
38 words
A washing controller of a washing machine according to claim 4, wherein the control means controls a strength of water current, a washing time, a rinsing time and a water-extraction time in response to the kind of clothes.
Claim 9
Dependent Claim
37 words
A washing controller of a washing machine according to claim 3, wherein the control means controls a strength of water current, a washing time, a rinsing time and a water-extraction time in response to the first value.
References Cited (Backward Citations)
JPS5936556A
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JPS6185993A
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US4779430A
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JPS61185298A
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JPS628794A
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JPS6421099A
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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) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |