US3572049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical assembly for a refrigerator
Assignee: Motors Liquidation Co
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Filing: 1969-09-22
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Granted: 1971-03-23
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Expires: 1989-09-22
Abstract
Abstract In the preferred form, a refrigerator cabinet is provided with a sheet metal outer shell and a plastic inner liner with polyurethane foam insulation in between. The interior of the inner liner is divided into an upper freezing compartment and a lower above freezing compartment by a sheet metal wall having a lower portion in the rear and a higher portion in the front supported by a front crossmember and the rear wall of the outer shell. Suitable insulation and an evaporator are provided above the lower portion together with a fan and fan motor at the rear which draw air through the inlets in the sheet metal wall and at the front of the upper compartment through the evaporator and discharge the air through plastic ducts in the rear wall extending to both the upper and lower compartments. A lamp socket and lamp, and a removable plastic housing surrounding the lamp are supported directly by the higher front portion of the sheet metal wall. This housing supports a centrally located door switch cooperating with the door to the lower compartment and connected in series with the lamp socket. A thermostatic refrigeration control switch is also mounted upon the housing and has a thermosensitive bulb extending to the lower rear portion of the sheet metal wall.
Inventors
- 👤 Earl J Moorman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:34
CPC Classifications
F; F25; F25D; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D27/00; F25D2317/00; F25D2317/06; F25D2317/065; F25D2317/0653; F25D2400/00; F25D2400/04; F25D2400/40
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
250 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, a door means for closing said compartments, an evaporator compartment containing an evaporator within said dividing means, discharge passage means extending from said evaporator compartment to said subcompartments, inlet passage means extending from said upper subcompartments to said evaporating compartment, wherein the improvement comprises a control assembly comprising a housing fastened to and mounted on the bottom of said dividing means adjacent said door means, inlet passage means extending from said lower subcompartment through said housing and said dividing means to said evaporator compartment, a temperature responsive control switch mounted in said housing responsive to the temperature in said housing and said lower compartment, a door switch mounted on said housing having an operating device extending into engagement with said door means, a lamp socket and lamp mounted on the bottom of said dividing means connected in electrical series circuit with said door switch, an electrically operated refrigerating system connected to said evaporator for supplying liquid refrigerant to said evaporator and for withdrawing evaporated refrigerant from said evaporator, an electrically operated fan For circulating air from said subcompartments through said inlet passages and through said evaporator compartment and discharge passages, an electrical insulating bushing means extending through said insulated walls, and wiring extending through said bushing means connecting said electrically operated fan and refrigerating system in series with said temperature responsive control switch.
Claim 2
Dependent Claim
250 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, a door means for closing said compartments, an evaporator compartment containing an evaporator within said dividing means, discharge passage means extending from said evaporator compartment to said subcompartments, inlet passage means extending from said upper subcompartments to said evaporating compartment, wherein the improvement comprises a control assembly comprising a housing fastened to and mounted on the bottom of said dividing means adjacent said door means, inlet passage means extending from said lower subcompartment through said housing and said dividing means to said evaporator compartment, a temperature responsive control switch mounted in said housing responsive to the temperature in said housing and said lower compartment, a door switch mounted on said housing having an operating device extending into engagement with said door means, a lamp socket and lamp mounted on the bottom of said dividing means connected in electrical series circuit with said door switch, an electrically operated refrigerating system connected to said evaporator for supplying liquid refrigerant to said evaporator and for withdrawing evaporated refrigerant from said evaporator, an electrically operated fan For circulating air from said subcompartments through said inlet passages and through said evaporator compartment and discharge passages, an electrical insulating bushing means extending through said insulated walls, and wiring extending through said bushing means connecting said electrically operated fan and refrigerating system in series with said temperature responsive control switch.
Claim 3
Dependent Claim
102 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, wherein the improvement comprises a control assembly comprising a housing fastened to and mounted on the bottom of said dividing means, a temperature responsive control switch mounted in said housing responsive to the temperature in said lower compartment, said control switch having a rotatable adjusting knob and shaft for manually adjusting said temperature responsive control switch, said housing being provided with an opening cooperating with said knob to indicate the indexed position of said knob.
Claim 4
Dependent Claim
102 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, wherein the improvement comprises a control assembly comprising a housing fastened to and mounted on the bottom of said dividing means, a temperature responsive control switch mounted in said housing responsive to the temperature in said lower compartment, said control switch having a rotatable adjusting knob and shaft for manually adjusting said temperature responsive control switch, said housing being provided with an opening cooperating with said knob to indicate the indexed position of said knob.
Claim 5
Dependent Claim
124 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, door means for closing said subcompartments wherein the improvement comprises providing said dividing means with a bottom metal sheet, a control assembly comprising a housing fastened to and mounted on the bottom of said metal sheet adjacent said door means, a temperature responsive control switch mounted in said housing responsive to the temperature in said lower subcompartment, a door switch mounted on said housing having an operating device extending into engagement with said door means, and a lamp socket and lamp mounted on said metal sheet connected in electrical series circuit with said lamp socket and lamp.
Claim 6
Dependent Claim
124 words
A refrigerator including a cabinet having insulated walls enclosing a compartment, a laterally extending dividing means within said compartment dividing said compartment into upper and lower subcompartments, door means for closing said subcompartments wherein the improvement comprises providing said dividing means with a bottom metal sheet, a control assembly comprising a housing fastened to and mounted on the bottom of said metal sheet adjacent said door means, a temperature responsive control switch mounted in said housing responsive to the temperature in said lower subcompartment, a door switch mounted on said housing having an operating device extending into engagement with said door means, and a lamp socket and lamp mounted on said metal sheet connected in electrical series circuit with said lamp socket and lamp.
Claim 7
Dependent Claim
154 words
A refrigerator including a cabinet having an outer shell and an inner liner enclosing a compartment, a dividing means within said inner liner dividing said compartment into subcompartments, door means for closing said subcompartments, wherein the improvement comprises providing said dividing means with a bottom metal sheet, a control assembly comprising a housing fastened to and mounted on the bottom of said sheet metal adjacent said door means, a temperature responsive control switch mounted in said housing responsive to the temperature in one of said subcompartments, a door switch mounted on said housing having an operating device extending into engagement with said door means, a lamp socket and lamp mounted on said metal sheet connnected in electrical series circuit with said door switch, said inner liner being of plastic having a low melting point, and support means having a higher melting point than said liner extending from said shell to said bottom metal sheet.
Claim 8
Dependent Claim
154 words
A refrigerator including a cabinet having an outer shell and an inner liner enclosing a compartment, a dividing means within said inner liner dividing said compartment into subcompartments, door means for closing said subcompartments, wherein the improvement comprises providing said dividing means with a bottom metal sheet, a control assembly comprising a housing fastened to and mounted on the bottom of said sheet metal adjacent said door means, a temperature responsive control switch mounted in said housing responsive to the temperature in one of said subcompartments, a door switch mounted on said housing having an operating device extending into engagement with said door means, a lamp socket and lamp mounted on said metal sheet connnected in electrical series circuit with said door switch, said inner liner being of plastic having a low melting point, and support means having a higher melting point than said liner extending from said shell to said bottom metal sheet.
Claim 9
Dependent Claim
120 words
A refrigerator including a cabinet having an outer shell and an inner liner enclosing a compartment, door means for closing said compartment, wherein the improvement comprises a control assembly including a housing mounted within said compartment adjacent said door means, a lamp socket and lamp mounted within said housing, a door switch provided with an enclosure mounted within said housing connected in electrical series circuit with said lamp socket and lamp, said door switch having an operating device entirely within said housing projecting from said enclosure, and an extension mounted upon and extending from said operating device outside said housing into engagement with said door means for operating said door switch to extinguish the lamp when the door is closed.
Claim 10
Dependent Claim
120 words
A refrigerator including a cabinet having an outer shell and an inner liner enclosing a compartment, door means for closing said compartment, wherein the improvement comprises a control assembly including a housing mounted within said compartment adjacent said door means, a lamp socket and lamp mounted within said housing, a door switch provided with an enclosure mounted within said housing connected in electrical series circuit with said lamp socket and lamp, said door switch having an operating device entirely within said housing projecting from said enclosure, and an extension mounted upon and extending from said operating device outside said housing into engagement with said door means for operating said door switch to extinguish the lamp when the door is closed.
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |