US3271005A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mechanical overspeed prevention device
Assignee: Sundstrand Corp
•
Filing: 1964-03-02
•
Granted: 1966-09-06
•
Expires: 1984-03-02
Abstract
No abstract record available.
Inventors
- 👤 George R Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:19
CPC Classifications
F; F01; F01D; F01D21/00; F01D21/006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A FAILSAFE FOR REDUCING THE SPEED OF A TURBINE DRIVE UNTI HAVING A TURBINE WHEEL BELOW THE MAXIMUM OPERATING SPEED THEREOF AGAINST THE ACCELERATING FORCES OF A PROPELLANT, COMPRISING; A FIRST MEMBER DRIVEN BY SAID TURBINE UNIT, A BRAKE SHOE MOUNTED ON SAID FIRST MEMBER IN CONTIGUOUS CONTACT THEREWITH AND PRESTRESSED JUST BELOW THE PORPROTIONAL LIMIT OF THE MATERIAL FROM WHICH THE SHOE IS CONSTRUCTED, A RETAINER ON SAID SHOE FOR URGING SAID SHOE AGAINST SAID FIRST MEMBER, SAID RETAINER BEING OF SUFFICIENT THICKNESS TO FRACTURE UNDER THE SUM OF THE CENTRIFUGAL FORCE OF THE SHOE UPON THE RETAINER AT THE MAXIMUM DESIRED OVERSPEED AND THE ELASTIC FORCE OF THE SHOE UPON THE RETAINER, AND A SECOND STATIONARY MEMBER ADJACENT SAID SHOE WHEREBY THE SHOE WILL RAPIDLY RECOVER FROM ITS PRESTRESSED POSITION UPON FRACTURE OF THE RETAINER AND ENGAGE THE SECOND MEMBER THEREBY REDUCING THE SPEED OF THE TURBINE UNIT.
Claim 2
Dependent Claim
150 words
A FAILSAFE FOR REDUCING THE SPEED OF A TURBINE DRIVE UNTI HAVING A TURBINE WHEEL BELOW THE MAXIMUM OPERATING SPEED THEREOF AGAINST THE ACCELERATING FORCES OF A PROPELLANT, COMPRISING; A FIRST MEMBER DRIVEN BY SAID TURBINE UNIT, A BRAKE SHOE MOUNTED ON SAID FIRST MEMBER IN CONTIGUOUS CONTACT THEREWITH AND PRESTRESSED JUST BELOW THE PORPROTIONAL LIMIT OF THE MATERIAL FROM WHICH THE SHOE IS CONSTRUCTED, A RETAINER ON SAID SHOE FOR URGING SAID SHOE AGAINST SAID FIRST MEMBER, SAID RETAINER BEING OF SUFFICIENT THICKNESS TO FRACTURE UNDER THE SUM OF THE CENTRIFUGAL FORCE OF THE SHOE UPON THE RETAINER AT THE MAXIMUM DESIRED OVERSPEED AND THE ELASTIC FORCE OF THE SHOE UPON THE RETAINER, AND A SECOND STATIONARY MEMBER ADJACENT SAID SHOE WHEREBY THE SHOE WILL RAPIDLY RECOVER FROM ITS PRESTRESSED POSITION UPON FRACTURE OF THE RETAINER AND ENGAGE THE SECOND MEMBER THEREBY REDUCING THE SPEED OF THE TURBINE UNIT.
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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) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |