US3376916A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Zone air conditioning apparatus
Assignee: Individual
•
Filing: 1965-10-24
•
Granted: 1968-04-09
•
Expires: 1985-10-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas G Gressett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:30
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/044; F24F3/048
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
IN AN AIR CONDITIONING SYSTEM HAVING A CENTRAL COLD AIR SOURCE PROVIDED WITH COMMON, COLD AIR DELIVERY MEANS FOR DISTRIBUTING COLD AIR FROM SAID SOURCE TO EACH OF A PLURALITY OF ZONES IN A MULTIPLE ZONE BUILDING IN WHICH EACH ZONE IS SUBJECT TO VARIABLE HEATING AND COOLING LOAD REQUIREMENTS, THE COMBINATION THEREWITH OF AIR DISTRIBUTION CONTROL MEANS FOR EACH ZONE COMPRISING A COLD AIR INLET COMMUNICATING WITH SAID COMMON COLD AIR DELIVERY MEANS AND A RETURN AIR INLET COMMUNICATING WITH EACH ZONE, AIR DISCHARGE MEANS TO INDUCE THE FLOW OF AIR THROUGH SAID COLD AIR AND RETURN AIR INLETS FROM A POINT DOWNSTREAM OF SAID INLETS FOR DISCHARGE AT A CONSTANT VOLUME INTO THE ZONE, MEANS FOR SENSING THE TEMPERATURE LEVEL IN EACH ZONE, AND TEMPERATURE-RESPONSIVE DAMPER CONTROL
Claim 2
Dependent Claim
129 words
IN AN AIR CONDITIONING SYSTEM HAVING A CENTRAL COLD AIR SOURCE PROVIDED WITH COMMON, COLD AIR DELIVERY MEANS FOR DISTRIBUTING COLD AIR FROM SAID SOURCE TO EACH OF A PLURALITY OF ZONES IN A MULTIPLE ZONE BUILDING IN WHICH EACH ZONE IS SUBJECT TO VARIABLE HEATING AND COOLING LOAD REQUIREMENTS, THE COMBINATION THEREWITH OF AIR DISTRIBUTION CONTROL MEANS FOR EACH ZONE COMPRISING A COLD AIR INLET COMMUNICATING WITH SAID COMMON COLD AIR DELIVERY MEANS AND A RETURN AIR INLET COMMUNICATING WITH EACH ZONE, AIR DISCHARGE MEANS TO INDUCE THE FLOW OF AIR THROUGH SAID COLD AIR AND RETURN AIR INLETS FROM A POINT DOWNSTREAM OF SAID INLETS FOR DISCHARGE AT A CONSTANT VOLUME INTO THE ZONE, MEANS FOR SENSING THE TEMPERATURE LEVEL IN EACH ZONE, AND TEMPERATURE-RESPONSIVE DAMPER CONTROL
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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) | 1971-04-09 | 1971-10-09 | 1972-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-09 | 1975-10-09 | 1976-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-09 | 1979-10-09 | 1980-04-09 | $7700.00 | Window Closed / Lapsed |