Patent US1424534A successfully refreshed from Google Patents.
Patent US3352537A successfully refreshed from Google Patents.
US3352537A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vane operating mechanism for fluid flow machines
Assignee: Rolls Royce PLC
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Filing: 1966-12-12
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Granted: 1967-11-14
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Expires: 1986-12-12
Abstract
No abstract record available.
Inventors
- 👤 Petrie James Alexander
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:06
CPC Classifications
F; F01; F01D; F01D17/00; F01D17/10; F01D17/12; F01D17/14; F01D17/16; F01D17/162
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
A VANE OPERATING MECHANISM FOR FLUID FLOW MACHINES COMPRISING A RING WHICH IS FORMED ON ONE SIDE THEREOF WITH GEAR TEETH, MEANS FOR ROTATING THE RING ABOUT ITS AXIS AND THROUGH A PREDETERMINED ANGULAR RANGE, A PLURALITY OF ANGULARLY SPACED APART PIVOTALLY MOUNTED VANES WHICH ARE ARRANGED ABOUT THE SAID AXIS, A RADIALLY EXTENDING ROTATABLE SPINDLE CONNECTED TO EACH SAID VANE, ROTATION OF A SAID SPINDLE EFFECTING PIVOTAL MOVEMENT OF THE RESPECTIVE VANE, EACH SPINDLE BEING PROVIDED WITH GEAR TEETH WHICH ARE IN MESH WITH THE GEAR TEETH ON THE RING, AT LEAST ONE SPRING WHICH URGES THE GREAR TEETH OF THE SPINDLES AXIALLY TOWARDS AND INTO MESH WITH THE TEETH OF THE RING, AND A TRACK MEMBER AGAINST WHICH SAID AT LEAST ONE SPRING BEARS, A ROLLER BEING ASSOCIATED WITH AND CARRIED BY EACH SAID SPINDLE, EACH ROLLER ENGAGING THE SAID TRACK MEMBEER.
Claim 2
Dependent Claim
144 words
A VANE OPERATING MECHANISM FOR FLUID FLOW MACHINES COMPRISING A RING WHICH IS FORMED ON ONE SIDE THEREOF WITH GEAR TEETH, MEANS FOR ROTATING THE RING ABOUT ITS AXIS AND THROUGH A PREDETERMINED ANGULAR RANGE, A PLURALITY OF ANGULARLY SPACED APART PIVOTALLY MOUNTED VANES WHICH ARE ARRANGED ABOUT THE SAID AXIS, A RADIALLY EXTENDING ROTATABLE SPINDLE CONNECTED TO EACH SAID VANE, ROTATION OF A SAID SPINDLE EFFECTING PIVOTAL MOVEMENT OF THE RESPECTIVE VANE, EACH SPINDLE BEING PROVIDED WITH GEAR TEETH WHICH ARE IN MESH WITH THE GEAR TEETH ON THE RING, AT LEAST ONE SPRING WHICH URGES THE GREAR TEETH OF THE SPINDLES AXIALLY TOWARDS AND INTO MESH WITH THE TEETH OF THE RING, AND A TRACK MEMBER AGAINST WHICH SAID AT LEAST ONE SPRING BEARS, A ROLLER BEING ASSOCIATED WITH AND CARRIED BY EACH SAID SPINDLE, EACH ROLLER ENGAGING THE SAID TRACK MEMBEER.
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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |