Patent US2728400A successfully refreshed from Google Patents.
Patent US3241474A successfully refreshed from Google Patents.
US3241474A
Expired / Lapsed
US
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Ventilator
Assignee: LESLIE-LOCKE Inc
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Filing: 1964-09-10
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Granted: 1966-03-22
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Expires: 1984-09-10
Abstract
No abstract record available.
Inventors
- 👤 Donald L Rousey
- 👤 Roger D Mccutcheon
- 👤 Freeland H Leslie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:47
CPC Classifications
E; E04; E04D; E04D13/00; E04D13/17; E04D13/174; F; F24; F24F; F24F7/00; F24F7/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A VENTILATOR ADAPTED TO BE MOUNTED OVER A ELONGATED OPENING IN THE ROOF OF A BUILDING, COMPRISING ELONGATED BASE MEANS HAVING LONGITUDINAL EXTENDING MARGINAL PORTIONS POSITIONABLE AGAINST THE ROOF AT OPPOSITE SIDES OF SAID ELONGATED OPENING, A PLURALITY OF CHIMNEYS SPACED APART LONGITUDINALLY OF SAID BASE MEANS AND HAVING OPEN LOWER ENDS CONNECTED TO SAID BASE MEANS AND ADAPTED TO COMMUNICATE WITH SAID OPENING, SAID CHIMNEYS HAVING TRANSVERSE DIMENSIONS GREATER IN A DIRECTION EXTENDING TRANSVERSELY OF SAID BASE MEANS THAT LONGITUDINALLY OF SAID BASE MEANS, SAID CHIMNEYS DEFINING AIR FLOW PASSAGEWAYS THEREBETWEEN, AND A CAP MEMBER MOUNTED ABOVE SAID CHIMNEYS, SAID CAP MEMBER HAVING A TOP PORTION SPACED ABOVE UPPER ENDS OF SAID CHIMNEYS FOR PERMITTING AIR TO FLOW UPWARDLY THROUGH THE CHIMNEYS AND INTO THE CAP MEMBER AND THEN OUT THROUGH SAID PASSAGEWAYS, SAID BASE MEANS INCLUDING ELONGATED AND UPSTANDING BAFFLE ELEMENTS EXTENDING LONGITUDINALLY OF SAID MARGINAL PORTIONS AND SPACED LATERALLY OUTWARDLY OF OPPOSITE ENDS OF SAID PASSAGEWAYS.
Claim 2
Dependent Claim
159 words
A VENTILATOR ADAPTED TO BE MOUNTED OVER A ELONGATED OPENING IN THE ROOF OF A BUILDING, COMPRISING ELONGATED BASE MEANS HAVING LONGITUDINAL EXTENDING MARGINAL PORTIONS POSITIONABLE AGAINST THE ROOF AT OPPOSITE SIDES OF SAID ELONGATED OPENING, A PLURALITY OF CHIMNEYS SPACED APART LONGITUDINALLY OF SAID BASE MEANS AND HAVING OPEN LOWER ENDS CONNECTED TO SAID BASE MEANS AND ADAPTED TO COMMUNICATE WITH SAID OPENING, SAID CHIMNEYS HAVING TRANSVERSE DIMENSIONS GREATER IN A DIRECTION EXTENDING TRANSVERSELY OF SAID BASE MEANS THAT LONGITUDINALLY OF SAID BASE MEANS, SAID CHIMNEYS DEFINING AIR FLOW PASSAGEWAYS THEREBETWEEN, AND A CAP MEMBER MOUNTED ABOVE SAID CHIMNEYS, SAID CAP MEMBER HAVING A TOP PORTION SPACED ABOVE UPPER ENDS OF SAID CHIMNEYS FOR PERMITTING AIR TO FLOW UPWARDLY THROUGH THE CHIMNEYS AND INTO THE CAP MEMBER AND THEN OUT THROUGH SAID PASSAGEWAYS, SAID BASE MEANS INCLUDING ELONGATED AND UPSTANDING BAFFLE ELEMENTS EXTENDING LONGITUDINALLY OF SAID MARGINAL PORTIONS AND SPACED LATERALLY OUTWARDLY OF OPPOSITE ENDS OF SAID PASSAGEWAYS.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |