Patent US4084919A successfully refreshed from Google Patents.
Patent US3275068A successfully refreshed from Google Patents.
US3275068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air distribution system
Assignee: Carrier Corp
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Filing: 1964-11-09
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Granted: 1966-09-27
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 William L Mcgrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:48
CPC Classifications
F; F24; F24F; F24F3/00; F24F3/02; F24F11/00; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F13/00; F24F13/02; F24F13/06; F24F3/044; F24F3/0442
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
IN AN AIR DISTRIBUTION SYSTEM FOR SUPPLYING CONDITIONED AIR TO A PLURALITY OF ZONES TO BE CONDITIONED, THE COMBINATION OF A CENTRAL STATION FOR CONDITIONING AIR COMPRISING A HEAT EXCHANGER, TEMPERATURE RESPONSIVE CONTROL MEANS FOR CONTROLLING OPERATING OF SAID CENTRAL STATION, DUCT MEANS COMMUNCATING SAID CENTRAL STATION WITH EACH ZONE TO BE CONDITIONED, ADJUSTABLE DAMPER MEANS FOR CONTROLLING THE DISCHARGE OF AIR FROM THE DUCT MEANS INTO THE ZONES TO BE TREATED, MECHANISM RESPONSIVE TO THE ATTAINMENT OF PRESELECTED PRESSURE CONDITIONS WITHIN THE DUCT MEANS TO VENT THE THE DUCT MEANS TO ONE OF SAID ZONES THEREBY MAINTAINING A PREDETERMINED MINIMUM QUANTITY OF AIR FLOW IN HEAT EXCHANGE RELATIONSHIP WITH THE HEAT EXCHANGER IN THE CENTRAL STATION, SAID MECHANISM INCLUDING MEANS RESPONSIVE TO A FIRST PREDETERMINED PRESSURE CONDITION IN THE DUCT MEANS AND A SECOND PREDETERMINED PRESSURE CONDITION IN THE DUCT MEANS TO ADJUST SAID DAMPER MEANS, SAID ADJUSTABLE DAMPER MEANS INCLUDING A FIRST DAMPER, AND A SECOND DAMPER, AND SAID MEANS INCLUDING A FIRST CONTROL TO ACTUATE THE FIRST DAMPER IN RESPONSE TO A FIRST DETERMINED PRESSURE IN THE DUCT MEANS AND A SECOND CONTROL TO ACTUATE THE SECOND DAMPER IN RESPONSE TO A SECOND PREDETERMINED PRESSURE IN THE DUCT MEANS.
Claim 2
Dependent Claim
202 words
IN AN AIR DISTRIBUTION SYSTEM FOR SUPPLYING CONDITIONED AIR TO A PLURALITY OF ZONES TO BE CONDITIONED, THE COMBINATION OF A CENTRAL STATION FOR CONDITIONING AIR COMPRISING A HEAT EXCHANGER, TEMPERATURE RESPONSIVE CONTROL MEANS FOR CONTROLLING OPERATING OF SAID CENTRAL STATION, DUCT MEANS COMMUNCATING SAID CENTRAL STATION WITH EACH ZONE TO BE CONDITIONED, ADJUSTABLE DAMPER MEANS FOR CONTROLLING THE DISCHARGE OF AIR FROM THE DUCT MEANS INTO THE ZONES TO BE TREATED, MECHANISM RESPONSIVE TO THE ATTAINMENT OF PRESELECTED PRESSURE CONDITIONS WITHIN THE DUCT MEANS TO VENT THE THE DUCT MEANS TO ONE OF SAID ZONES THEREBY MAINTAINING A PREDETERMINED MINIMUM QUANTITY OF AIR FLOW IN HEAT EXCHANGE RELATIONSHIP WITH THE HEAT EXCHANGER IN THE CENTRAL STATION, SAID MECHANISM INCLUDING MEANS RESPONSIVE TO A FIRST PREDETERMINED PRESSURE CONDITION IN THE DUCT MEANS AND A SECOND PREDETERMINED PRESSURE CONDITION IN THE DUCT MEANS TO ADJUST SAID DAMPER MEANS, SAID ADJUSTABLE DAMPER MEANS INCLUDING A FIRST DAMPER, AND A SECOND DAMPER, AND SAID MEANS INCLUDING A FIRST CONTROL TO ACTUATE THE FIRST DAMPER IN RESPONSE TO A FIRST DETERMINED PRESSURE IN THE DUCT MEANS AND A SECOND CONTROL TO ACTUATE THE SECOND DAMPER IN RESPONSE TO A SECOND PREDETERMINED PRESSURE IN THE DUCT MEANS.
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) | 1969-09-26 | 1970-03-28 | 1970-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-26 | 1974-03-28 | 1974-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-26 | 1978-03-28 | 1978-09-27 | $7700.00 | Window Closed / Lapsed |