US3109486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heating and cooling system
Assignee: Midland Ross Corp
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Filing: 1960-07-11
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Granted: 1963-11-05
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Expires: 1980-07-11
Abstract
No abstract record available.
Inventors
- 👤 Erwin G Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:34
CPC Classifications
F; F25; F25D; F25D31/00; F25D31/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN THE PROCESS OF SUPPLYING USER EQUIPMENT WITH HEATING AND COOLING LIQUIDS DERIVED RESPECTIVELY FROM HEATING AND COOLING SOURCES ASSOCIATED WITH RESPECTIVE SUPERPOSED HEATING AND COOLING STORAGE ZONES IN AN ACCUMULATOR WITH THE HEATING STORAGE ZONE UPPERMOST VIAINTERCONNECTING PIPING WITH THE USER EQUIPMENT IN A FIRST PHASE AND A SUCCEEDING PHASE AND IN WHICH SPENT LIQUID FROM THE USER EQUIPMENT ORDINARILY IS CIRCULATED VIA RETURN CONDUITS DURING OPERATION OF THE FIRST PHASE DIRECTLY TO THE SOURCE THEREOF, THE STEPS OF SWITCHING SUPPLY OF LIQUID TO THE USER EQUIPMENT FROM THE SOURCE OF THE FIRST PHASE TO THE SOURCE OF THE SUCCEEDING PHASE AND AT THAT TIME EFFECTING THE RETURN OF SPENT LIQUID FROM THE USER EQUIPMENT TO THE STORAGE ZONE IN THE ACCUMULATOR ASSOCIATED WITH THE FIRST PHASE THEREBY DISPLACING LIQUID WITHIN THE
Claim 2
Dependent Claim
133 words
IN THE PROCESS OF SUPPLYING USER EQUIPMENT WITH HEATING AND COOLING LIQUIDS DERIVED RESPECTIVELY FROM HEATING AND COOLING SOURCES ASSOCIATED WITH RESPECTIVE SUPERPOSED HEATING AND COOLING STORAGE ZONES IN AN ACCUMULATOR WITH THE HEATING STORAGE ZONE UPPERMOST VIAINTERCONNECTING PIPING WITH THE USER EQUIPMENT IN A FIRST PHASE AND A SUCCEEDING PHASE AND IN WHICH SPENT LIQUID FROM THE USER EQUIPMENT ORDINARILY IS CIRCULATED VIA RETURN CONDUITS DURING OPERATION OF THE FIRST PHASE DIRECTLY TO THE SOURCE THEREOF, THE STEPS OF SWITCHING SUPPLY OF LIQUID TO THE USER EQUIPMENT FROM THE SOURCE OF THE FIRST PHASE TO THE SOURCE OF THE SUCCEEDING PHASE AND AT THAT TIME EFFECTING THE RETURN OF SPENT LIQUID FROM THE USER EQUIPMENT TO THE STORAGE ZONE IN THE ACCUMULATOR ASSOCIATED WITH THE FIRST PHASE THEREBY DISPLACING LIQUID WITHIN THE
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) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |