US3315749A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan construction
Assignee: Universal American Corp
•
Filing: 1965-07-01
•
Granted: 1967-04-25
•
Expires: 1985-07-01
Abstract
No abstract record available.
Inventors
- 👤 Kenneth W Parsons
- 👤 Wilfred E Walton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:36
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/06; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A FAN CONSTRUCTION INCLUDING, IN COMBINATION, A PLURALITY OF INDIVIDUAL BLADES FORMED OF SHEET METAL, EACH OF SAID BLADES HAVING AN OPENING IN AN END REGION THEREOF DEFINING A GENERALLY ANNULAR CONFIGURATION, A HUB MEMBER HAVING A LATERALLY EXTENDING CIRCULAR FLANGE OF A SHAPE TO SNUGLY FIT INTO THE OPENINGS IN THE BLADES, THE ANNULAR REGIONS OF THE BLADES DEFINING THE OPENINGS BEING IN STACKED RELATION WITH THE BLADES IN RADIALLY-EXTENDING CIRCUMFERENTIALLY-SPACED RELATION AND THE CIRCULAR FLANGE OF THE HUB MEMBER EXTENDING THROUGH THE OPENINGS IN
Claim 2
Dependent Claim
86 words
A FAN CONSTRUCTION INCLUDING, IN COMBINATION, A PLURALITY OF INDIVIDUAL BLADES FORMED OF SHEET METAL, EACH OF SAID BLADES HAVING AN OPENING IN AN END REGION THEREOF DEFINING A GENERALLY ANNULAR CONFIGURATION, A HUB MEMBER HAVING A LATERALLY EXTENDING CIRCULAR FLANGE OF A SHAPE TO SNUGLY FIT INTO THE OPENINGS IN THE BLADES, THE ANNULAR REGIONS OF THE BLADES DEFINING THE OPENINGS BEING IN STACKED RELATION WITH THE BLADES IN RADIALLY-EXTENDING CIRCUMFERENTIALLY-SPACED RELATION AND THE CIRCULAR FLANGE OF THE HUB MEMBER EXTENDING THROUGH THE OPENINGS IN
References Cited (Backward Citations)
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US1404298A
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US1983606A
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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) | 1970-04-24 | 1970-10-24 | 1971-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-04-24 | 1974-10-24 | 1975-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-04-24 | 1978-10-24 | 1979-04-25 | $7700.00 | Window Closed / Lapsed |