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US3609988A Expired / Lapsed US ⏱️ 0.0 years remaining

Side-by-side refrigerator freezer with high humidity compartment

Assignee: Motors Liquidation Co
•
Filing: 1970-05-25
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Granted: 1971-10-05
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Expires: 1990-05-25
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Abstract

Abstract IN PREFERRED FORM, A SIDE-BY-SIDE REFRIGERATOR FREEZER HAVING A VERTICAL PARTITION SEPARATING A FREEZER COMPARTMENT FROM AN ABOVE FREEZING COMPARTMENT WHICH IS DIVIDED INTO A HIGH HUMIDITY SPACE AND A LOW HUMIDITY SPACE. ALL OF THE COMPADRTMENTS ARE COOLED BY AIR FLOW ACROSS A SINGLE EVAPORATOR LOCATED WITHIN A PLENUM IN A FREEZER COMPARTMENT. A PARALLEL FLOW HEAT ECHANGER DIRECTS COLD DRY AIR INTO AN ENVELOPE FOR COOLING THE HIGH HUMIDITY SPACE AND THEREAFTER RECEIVES THE RETURN AIR FROM THE ENVELOPE TO RECOOL IT PRIOR TO PASSAGE INTO THE LOW HUMIDITY COMPARTMENT FOR RETURN FLOW TO THE EVAPORATOR PLENUM. A BY-PASS DUCT FROM THE PARALLEL FLOW EXCHANGER RETURNS PART OF THE RECOOLED AIR TO A LOW POINT IN THE LOW HUMIDITY SPACE TO DIRECT EXCESS AIR FROM THE PARALLEL EXCHANGER BACK INTO THE COOLING PLENUM.

Inventors

  • 👤 James A Bright

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-04 22:15
CPC Classifications
F; F25; F25D; F25D27/00; F25D17/00; F25D17/04; F25D17/06; F25D17/062; F25D17/065; F25D17/042; F25D2317/00; F25D2317/04; F25D2317/041; F25D2317/0413; F25D2317/06; F25D2317/067; F25D2317/068; F25D2317/0682; F25D2317/0683; F25D2400/00; F25D2400/06; F25D2700/00; F25D2700/02; F25D2700/12

Claims Analysis

Total Claims: 0
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References Cited (Backward Citations)

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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) 1974-10-04 1975-04-05 1975-10-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-10-04 1979-04-05 1979-10-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-10-04 1983-04-05 1983-10-05 $7700.00 Window Closed / Lapsed

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