US3302047A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fan assembly for high-torque application
Assignee: Black and Decker Corp
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Filing: 1964-12-24
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Granted: 1967-01-31
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Expires: 1984-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harold O Short
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:57
CPC Classifications
B; B25; B25F; B25F5/00; B25F5/008; H; H02; H02K; H02K9/00; H02K9/02; H02K9/04; H02K9/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
134 words
IN COMBINATION WITH A RELATIVELY HIGH-SPEED HIGHTORQUE ELECTRICALLY OPERATED MACHINE OF THE TYPE EXPERIENCING OCCASIONAL RELATIVELY HIGH STALL-TORQUES AND COMPRISING A MOTOR HOUSING, A MOTOR IN THE MOTOR HOUSING, A DRIVING SHAFT ON THE MOTOR, AND AIR INLET AND EXHAUST OPENINGS IN THE MOTOR HOUSING: A COOLING FAN ASSEMBLY FOR THE MOTOR FOR DRAWING COOLING AIR IN THROUGH THE INLET OPENINGS AND DISCHARGING THE COOLING AIR THROUGH THE EXHAUST OPENINGS, SAID FAN ASSEMBLY COMPRISING: (A) A HUB PORTION HAVING A CENTRAL APERTURE FOR RECEIVING SAID MOTOR DRIVING SHAFT; (B) MEANS FOR MOUNTING SAID HUB PORTION OF SAID MOTOR DRIVING SHAFT OF SAID MACHINE FOR ROTATION IN UNISON; (C) A SHOULDER ON SAID HUB PORTION; (D) A BLADE PORTION HAVING AN APERTURE CENTRAL SECTION SEATED UPON SAID HUB PORTION AND DISPOSED AGAINST SAID SHOULDER; AND
Claim 2
Dependent Claim
134 words
IN COMBINATION WITH A RELATIVELY HIGH-SPEED HIGHTORQUE ELECTRICALLY OPERATED MACHINE OF THE TYPE EXPERIENCING OCCASIONAL RELATIVELY HIGH STALL-TORQUES AND COMPRISING A MOTOR HOUSING, A MOTOR IN THE MOTOR HOUSING, A DRIVING SHAFT ON THE MOTOR, AND AIR INLET AND EXHAUST OPENINGS IN THE MOTOR HOUSING: A COOLING FAN ASSEMBLY FOR THE MOTOR FOR DRAWING COOLING AIR IN THROUGH THE INLET OPENINGS AND DISCHARGING THE COOLING AIR THROUGH THE EXHAUST OPENINGS, SAID FAN ASSEMBLY COMPRISING: (A) A HUB PORTION HAVING A CENTRAL APERTURE FOR RECEIVING SAID MOTOR DRIVING SHAFT; (B) MEANS FOR MOUNTING SAID HUB PORTION OF SAID MOTOR DRIVING SHAFT OF SAID MACHINE FOR ROTATION IN UNISON; (C) A SHOULDER ON SAID HUB PORTION; (D) A BLADE PORTION HAVING AN APERTURE CENTRAL SECTION SEATED UPON SAID HUB PORTION AND DISPOSED AGAINST SAID SHOULDER; AND
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) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |