US3509732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Absorption refrigeration system
Assignee: Whirlpool Corp
•
Filing: 1965-10-20
•
Granted: 1970-05-05
•
Expires: 1985-10-20
Abstract
No abstract record available.
Inventors
- 👤 John Roeder Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:41
CPC Classifications
F; F25; F25B; F25B37/00; F25B15/00; F25B15/02; F25B15/04; Y; Y02; Y02A; Y02A30/00; Y02A30/27; Y02B; Y02B30/00; Y02B30/62
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
ABSORBER-HEAT EXCHANGER APPARATUS FOR A LIQUID-GAS REFRIGERATION SYSTEM, COMPRISING: MEANS PROVIDING A CHAMBER; ENCLOSED LIQUID CONDUIT MEANS HAVING AN OUTER SURFACE WITHIN SAID CHAMBER, SAID CONDUIT MEANS BEING IN THE FORM OF A SUBSTANTIALLY VERTICAL HELIX WITHIN SAID CHAMBER; MEANS FOR FLOWING A WEEK ABSORBENT SOLUTION OVER THE OUTER SURFACE OF SAID COIL IN HEAT EXCHANGE RELATIONSHIP THEREWITH COMPRISING A LIQUID DISTRIBUTING CUP MEMBER ABOVE THE TOPMOST INDIVIDUAL COIL IN SAID HELIX HAVING A PLURALITY OF OUTLETS ABOVE THE TOPMOST COIL FOR FLOWING SAID SOLUTION OVER SAID TOPMOST COIL AND THEN SUCCEEDING COILS; AND MEANS FOR SUPPLYING TO SAID CHAMBER A GASEOUS REFRIGERANT IN CONTACT WITH SAID SOLUTION TO ENRICH THE SOLUTION.
Claim 2
Dependent Claim
112 words
ABSORBER-HEAT EXCHANGER APPARATUS FOR A LIQUID-GAS REFRIGERATION SYSTEM, COMPRISING: MEANS PROVIDING A CHAMBER; ENCLOSED LIQUID CONDUIT MEANS HAVING AN OUTER SURFACE WITHIN SAID CHAMBER, SAID CONDUIT MEANS BEING IN THE FORM OF A SUBSTANTIALLY VERTICAL HELIX WITHIN SAID CHAMBER; MEANS FOR FLOWING A WEEK ABSORBENT SOLUTION OVER THE OUTER SURFACE OF SAID COIL IN HEAT EXCHANGE RELATIONSHIP THEREWITH COMPRISING A LIQUID DISTRIBUTING CUP MEMBER ABOVE THE TOPMOST INDIVIDUAL COIL IN SAID HELIX HAVING A PLURALITY OF OUTLETS ABOVE THE TOPMOST COIL FOR FLOWING SAID SOLUTION OVER SAID TOPMOST COIL AND THEN SUCCEEDING COILS; AND MEANS FOR SUPPLYING TO SAID CHAMBER A GASEOUS REFRIGERANT IN CONTACT WITH SAID SOLUTION TO ENRICH THE SOLUTION.
References Cited (Backward Citations)
US2552071A
Cited
US2959931A
Cited
US3037361A
Cited
US3078690A
Cited
US3124938A
Cited
US3250087A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |