US3352225A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ventilation apparatus with control means
Assignee: STOCKBUILDINGS Ltd
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Filing: 1965-11-23
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Granted: 1967-11-14
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Expires: 1985-11-23
Abstract
No abstract record available.
Inventors
- 👤 Ffiske Gerald Drandridge
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 18:11
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/1906; A; A01; A01K; A01K1/00; A01K1/0047; F; F24; F24F; F24F11/00; F24F11/0001; F24F11/70; F24F11/72; F24F11/74; F24F11/76; F24F7/00; F24F7/007; F24F7/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
IN A BUILDING OR OTHER ENCLOSED SPACE, THE IMPROVED VENTILATION MEANS CONSISTING OF AT LEAST ONE FANE AT A FORCED DRAFT APERTURE BETWEEN THE INTERIOR AND THE EXTERIOR OF SAID BUILDING AND A THROUGHFLOW VENT BETWEEN SAID INTERIOR AND EXTERIOR BUT REMOTE FROM THE FORCED DRAFT APERTURE WHEREBY THE VENT AND APERTURE FORM SPACED OPENINGS FOR A FLOW OF VENTILATION AIR THROUGH SAID BUILDING, AN ELECTRICAL POWER INPUT TO SAID FAN AND MEANS FOR CONTROLLING THE SPEED OF THE FAN, SAID CONTROL MEANS INCLUDING POWER REGULATION MEANS TO CONTROL THE SPEED OF THE FAN IN AN INFINITELY VARIABLE MANNER IN DEPENDENCE UPON THE TEMPERATURE AT SAID ELEMENT, THERE BEING FURTHER PROVIDED A THROTTLE DEVICE AT SAID THROUGHFLOW VENT AND AN ADJUSTMENT DEVICE CONNECTED TO SAID THROTTLE DEVICE TO VARY THE EFFECTIVE AREA AT SAID VENT, CONTROL MEANS OPERATIVELY CONNECTED TO SAID ADJUSTMENT DEVICE TO CAUSE SAID AREA TO VARY TOGETHER WITH AND IN THE SAME SENSE AS SAID FAN SPEED.
Claim 2
Dependent Claim
160 words
IN A BUILDING OR OTHER ENCLOSED SPACE, THE IMPROVED VENTILATION MEANS CONSISTING OF AT LEAST ONE FANE AT A FORCED DRAFT APERTURE BETWEEN THE INTERIOR AND THE EXTERIOR OF SAID BUILDING AND A THROUGHFLOW VENT BETWEEN SAID INTERIOR AND EXTERIOR BUT REMOTE FROM THE FORCED DRAFT APERTURE WHEREBY THE VENT AND APERTURE FORM SPACED OPENINGS FOR A FLOW OF VENTILATION AIR THROUGH SAID BUILDING, AN ELECTRICAL POWER INPUT TO SAID FAN AND MEANS FOR CONTROLLING THE SPEED OF THE FAN, SAID CONTROL MEANS INCLUDING POWER REGULATION MEANS TO CONTROL THE SPEED OF THE FAN IN AN INFINITELY VARIABLE MANNER IN DEPENDENCE UPON THE TEMPERATURE AT SAID ELEMENT, THERE BEING FURTHER PROVIDED A THROTTLE DEVICE AT SAID THROUGHFLOW VENT AND AN ADJUSTMENT DEVICE CONNECTED TO SAID THROTTLE DEVICE TO VARY THE EFFECTIVE AREA AT SAID VENT, CONTROL MEANS OPERATIVELY CONNECTED TO SAID ADJUSTMENT DEVICE TO CAUSE SAID AREA TO VARY TOGETHER WITH AND IN THE SAME SENSE AS SAID FAN SPEED.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |