Patent US3727419A successfully refreshed from Google Patents.
US3727419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refrigerator control circuit
Assignee: Whirlpool Corp
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Filing: 1971-06-16
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Granted: 1973-04-17
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Expires: 1991-06-16
Abstract
Abstract A refrigerator having a control thermostat disposed in the refrigerated chamber. The refrigerator control includes a motor driven defrost timer. The motor of the timer is disposed in heat transfer association with the temperature responsive means of the thermostat. The thermostat and timer may be disposed in a space defined by a wall means forming a control console.
Inventors
- 👤 B Brightman
- 👤 C Clarke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:23
CPC Classifications
F; F25; F25D; F25D27/00; F25D27/005; F25D21/00; F25D21/06; F25D2400/00; F25D2400/04; F25D29/00; F25D29/005
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
94 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor mechanically driving another device in said refrigeration device and disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby energy losses produced by said operation of said motor additionally cause heating of said temperature responsive means.
Claim 2
Dependent Claim
94 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor mechanically driving another device in said refrigeration device and disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby energy losses produced by said operation of said motor additionally cause heating of said temperature responsive means.
Claim 3
Dependent Claim
11 words
The structure of claim 1 whereIn said motor is energized continuously.
Claim 4
Dependent Claim
44 words
The structure of claim 1 wherein said refrigerating means and location of said motor are coordinated to assure that the temperature of the motor is above the dew point of the chamber air circumjacent the motor to preclude undesirable moisture condensation on said motor.
Claim 5
Dependent Claim
96 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, said motor comprising the drive motor of a timer for timing cyclical operation of the refrigerating means.
Claim 6
Dependent Claim
96 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, said motor comprising the drive motor of a timer for timing cyclical operation of the refrigerating means.
Claim 7
Dependent Claim
98 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, said motor comprising the drive motor of a defrost timer for timing a defrost operation of the refrigerating means.
Claim 8
Dependent Claim
98 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, and a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, said motor comprising the drive motor of a defrost timer for timing a defrost operation of the refrigerating means.
Claim 9
Dependent Claim
120 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor mechanically driving another device in said refrigeration device and disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby energy losses produced by said operation of said motor additionally cause heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means.
Claim 10
Dependent Claim
120 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor mechanically driving another device in said refrigeration device and disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby energy losses produced by said operation of said motor additionally cause heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means.
Claim 11
Dependent Claim
122 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means, said wall means substantially enclosing the space in which said temperature responsive means and motor are disposed.
Claim 12
Dependent Claim
122 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means, said wall means substantially enclosing the space in which said temperature responsive means and motor are disposed.
Claim 13
Dependent Claim
121 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means, said wall means substantially enclosing the space in which said thermostat device and motor are disposed.
Claim 14
Dependent Claim
121 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and wall means adjacent said motor and temperature responsive means for causing heat developed by operation of said motor to be retained adjacent said temperature responsive means, said wall means substantially enclosing the space in which said thermostat device and motor are disposed.
Claim 15
Dependent Claim
23 words
The structure of claim 8 wherein said wall means defines an apertured portion for conducting refrigerated air from said chamber to said space.
Claim 16
Dependent Claim
109 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and illumination means adjacent said temperature responsive means in thermal transfer association therewith for augmenting the heating of said temperature responsive means as an incident of operation of said illumination means.
Claim 17
Dependent Claim
109 words
In a refrigeration device defining a chamber and means for refrigerating said chamber, a thermostat device having a temperature sensing element and means responsive to temperature sensed by said element for controlling operation of the chamber refrigerating means, each of said sensing element and temperature responsive means being disposed in the refrigerated chamber, a motor disposed adjacent said temperature responsive means in thermal transfer association therewith, whereby operation of said motor causes heating of said temperature responsive means, and illumination means adjacent said temperature responsive means in thermal transfer association therewith for augmenting the heating of said temperature responsive means as an incident of operation of said illumination means.
Claim 18
Dependent Claim
35 words
The structure of claim 10 further including wall means adjacent said illumination means and temperature responsive means for causing heat developed by operation of said illumination means to be retained adjacent said temperature responsive means.
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) | 1976-04-16 | 1976-10-16 | 1977-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-16 | 1980-10-16 | 1981-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-16 | 1984-10-16 | 1985-04-17 | $7700.00 | Window Closed / Lapsed |