Patent US3077228A successfully refreshed from Google Patents.
US3077228A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heavy-duty internal combustion fan assembly
Assignee: Individual
•
Filing: 1960-04-22
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Granted: 1963-02-12
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Expires: 1980-04-22
Abstract
No abstract record available.
Inventors
- 👤 Howard S Mohn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:31
CPC Classifications
F; F01; F01P; F01P7/00; F01P7/02; F01P7/06; F04; F04D; F04D29/00; F04D29/26; F04D29/32; F04D29/34; F04D29/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A HEAVY-DUTY FAN ASSEMBLY COMPRISING A HUB MEMBER, A PLURALITY OF RADIALLY EXTENDING BORES LYING WITHIN SAID HUB AND OPENING AT ITS PERIPHERY, A PLURALITY OF BLADE MEMBERS EACH HAVING AN INWARDLY TERMINATING SHANK END ROTATABLY CARRIED WITHIN ONE OF SAID BORES, AT LEAST TWO ARCUATELY AND LONGITUDINALLY OFFSET CONICAL RECESSES WITHIN SAID TERMINATING SHANK END, AND SELF ALIGNING AND RETAINING MEANS WITHIN SAID HUB MEMBER MATEABLY ENGAGEABLE WITH SAID CONICAL RECESSES FOR PITCH REVERSAL AND ADJUSTMENT OF SAID BLADE MEMBERS.
Claim 2
Dependent Claim
81 words
A HEAVY-DUTY FAN ASSEMBLY COMPRISING A HUB MEMBER, A PLURALITY OF RADIALLY EXTENDING BORES LYING WITHIN SAID HUB AND OPENING AT ITS PERIPHERY, A PLURALITY OF BLADE MEMBERS EACH HAVING AN INWARDLY TERMINATING SHANK END ROTATABLY CARRIED WITHIN ONE OF SAID BORES, AT LEAST TWO ARCUATELY AND LONGITUDINALLY OFFSET CONICAL RECESSES WITHIN SAID TERMINATING SHANK END, AND SELF ALIGNING AND RETAINING MEANS WITHIN SAID HUB MEMBER MATEABLY ENGAGEABLE WITH SAID CONICAL RECESSES FOR PITCH REVERSAL AND ADJUSTMENT OF SAID BLADE MEMBERS.
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) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |