US3261544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety guard for fan
Assignee: US Philips Corp
•
Filing: 1963-10-10
•
Granted: 1966-07-19
•
Expires: 1983-10-10
Abstract
No abstract record available.
Inventors
- 👤 Guichard Roland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:33
CPC Classifications
F; F04; F04D; F04D29/00; F04D29/70; F04D29/701; F04D29/703; F04D17/00; F04D17/02; F04D17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
APPARATUS COMPRISING A PRIME MOVER MEANS HAVING A DRIVEN SHAFT, AIR MOVING SCREW ATTACHED TO SAID SHAFT, AND SAFETY GUARD MEANS FOR SUBSTANTIALLY COMPLETELY ENCLOSING SAID AIR MOVING MEANS IN SPACED RELATION THEREWITH, BEARING MEANS MOUNTING AT LEAST A PORTION OF SAID SAFETY GUARD MEANS ON SAID SHAFT FOR FREE ROTATION, SAID SAFETY GUARD MEANS HAVING RADIALLY EXTENDING AERO-
Claim 2
Dependent Claim
59 words
APPARATUS COMPRISING A PRIME MOVER MEANS HAVING A DRIVEN SHAFT, AIR MOVING SCREW ATTACHED TO SAID SHAFT, AND SAFETY GUARD MEANS FOR SUBSTANTIALLY COMPLETELY ENCLOSING SAID AIR MOVING MEANS IN SPACED RELATION THEREWITH, BEARING MEANS MOUNTING AT LEAST A PORTION OF SAID SAFETY GUARD MEANS ON SAID SHAFT FOR FREE ROTATION, SAID SAFETY GUARD MEANS HAVING RADIALLY EXTENDING AERO-
References Cited (Backward Citations)
US557300A
Cited
US759951A
Cited
US910760A
Cited
FR499985A
Cited
GB139785A
Cited
US1467537A
Cited
US1725085A
Cited
US2262854A
Cited
FR977357A
Cited
US2824429A
Cited
US2791373A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |