Patent US3309846A successfully refreshed from Google Patents.
US3309846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heater-ventilator
Assignee: Individual
•
Filing: 1964-05-21
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Granted: 1967-03-21
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Expires: 1984-05-21
Abstract
No abstract record available.
Inventors
- 👤 Schneider Jurgen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 13:47
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/60; F04D29/64; F04D29/644; F04D29/646
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
279 words
A HEATER VENTILATOR HAVING A BLOWER AND COMPRISING IN COMBINATION: A HOUSING HAVING AN UPWARDLY TAPERING UPPER PORTION PROVIDED WITH AIR INLET MEANS AND A LOWER PORTION PROVIDED WITH AIR OUTLET MEANS FOR DELIVERING AIR RADIALLY WITH RESPECT TO SUCH BLOWER IN AN APPROXIMATELY HORIZONTAL DIRECTION, A BASE PLATE FORMED OF A MOLDED SUBSTANCE MOUNTED AT THE LOWER END OF SAID HOUSING AND HAVING A MIDDLE PORTION EXTENDING UPWARDLY, SAID MIDDLE PORTION HAVING A FUNNEL SHAPED OPENING THERETHROUGH AND HAVING A CROSS-SECTIONAL AREA WHICH DIMINISHES IN THE UPWARD DIRECTION, SAID BASE PLATE FURTHER HAVING A LOWER SURFACE INCLUDING AN ANNULAR OUTER PORTION AND A FUNNEL-SHAPED INNER PORTION WHOSE OUTER EXTREMITY IS CONTIGUOUS WITH SAID ANNULAR PORTION AND WHOSE INNER EXTREMITY IS CONTIGUOUS WITH SAID FUNNEL SHAPED OPENING OF SAID MIDDLE PORTION TO CREATE A SMOOTH TRANSITION BETWEEN SAID ANNULAR PORTION AND SAID FUNNEL SHAPED OPENING, SAID BASE PLATE FURTHER HAVING AN UPPER SURFACE HAVING A PLURALITY OF SUBSTANTIALLY VERTICAL RIBS EXTENDING RADIALLY OUTWARD FROM SAID MIDDLE PORTION FOR MECHANICALLY STIFFENING SAID BASE PLATE AND FOR PREVENTING A CIRCULAR MOVEMENT OF THE AIR SUPPLIED BY SAID BLOWER, VENTILATOR MEANS INCLUDING SAID BLOWER AND AN ELECTRIC MOTOR, SAID ELECTRIC MOTOR BEING MOUNTED UPON AN UPPER SURFACE OF SAID MIDDLE PORTION OF SAID BASE PLATE AND SAID BLOWER EXTENDING UPWARDLY FROM SAID MOTOR, AND AN ELECTRIC CABLE EXTENDING THROUGH AND BEING LATERALLY SUPPORTED BY, SAID FUNNEL SHAPED OPENING TO AN UPPER SIDE OF SAID BASE PLATE AND CONNECTED TO SAID ELECTRIC MOTOR, SAID FUNNEL SHAPED OPENING HAVING GENTLY CURVING WALLS FOR PREVENTING THE SHARP BENDING OF SAID CABLE AND FOR PERMITTING SAID CABLE TO EMERGE FROM SAID OPENING IN ANY RADIAL DIRECTION.
Claim 2
Dependent Claim
279 words
A HEATER VENTILATOR HAVING A BLOWER AND COMPRISING IN COMBINATION: A HOUSING HAVING AN UPWARDLY TAPERING UPPER PORTION PROVIDED WITH AIR INLET MEANS AND A LOWER PORTION PROVIDED WITH AIR OUTLET MEANS FOR DELIVERING AIR RADIALLY WITH RESPECT TO SUCH BLOWER IN AN APPROXIMATELY HORIZONTAL DIRECTION, A BASE PLATE FORMED OF A MOLDED SUBSTANCE MOUNTED AT THE LOWER END OF SAID HOUSING AND HAVING A MIDDLE PORTION EXTENDING UPWARDLY, SAID MIDDLE PORTION HAVING A FUNNEL SHAPED OPENING THERETHROUGH AND HAVING A CROSS-SECTIONAL AREA WHICH DIMINISHES IN THE UPWARD DIRECTION, SAID BASE PLATE FURTHER HAVING A LOWER SURFACE INCLUDING AN ANNULAR OUTER PORTION AND A FUNNEL-SHAPED INNER PORTION WHOSE OUTER EXTREMITY IS CONTIGUOUS WITH SAID ANNULAR PORTION AND WHOSE INNER EXTREMITY IS CONTIGUOUS WITH SAID FUNNEL SHAPED OPENING OF SAID MIDDLE PORTION TO CREATE A SMOOTH TRANSITION BETWEEN SAID ANNULAR PORTION AND SAID FUNNEL SHAPED OPENING, SAID BASE PLATE FURTHER HAVING AN UPPER SURFACE HAVING A PLURALITY OF SUBSTANTIALLY VERTICAL RIBS EXTENDING RADIALLY OUTWARD FROM SAID MIDDLE PORTION FOR MECHANICALLY STIFFENING SAID BASE PLATE AND FOR PREVENTING A CIRCULAR MOVEMENT OF THE AIR SUPPLIED BY SAID BLOWER, VENTILATOR MEANS INCLUDING SAID BLOWER AND AN ELECTRIC MOTOR, SAID ELECTRIC MOTOR BEING MOUNTED UPON AN UPPER SURFACE OF SAID MIDDLE PORTION OF SAID BASE PLATE AND SAID BLOWER EXTENDING UPWARDLY FROM SAID MOTOR, AND AN ELECTRIC CABLE EXTENDING THROUGH AND BEING LATERALLY SUPPORTED BY, SAID FUNNEL SHAPED OPENING TO AN UPPER SIDE OF SAID BASE PLATE AND CONNECTED TO SAID ELECTRIC MOTOR, SAID FUNNEL SHAPED OPENING HAVING GENTLY CURVING WALLS FOR PREVENTING THE SHARP BENDING OF SAID CABLE AND FOR PERMITTING SAID CABLE TO EMERGE FROM SAID OPENING IN ANY RADIAL DIRECTION.
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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) | 1970-03-20 | 1970-09-19 | 1971-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-20 | 1974-09-19 | 1975-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-20 | 1978-09-19 | 1979-03-21 | $7700.00 | Window Closed / Lapsed |