Patent US3224148A successfully refreshed from Google Patents.
US3224148A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for producing a reflective rotating shutter
Assignee: Individual
•
Filing: 1963-08-05
•
Granted: 1965-12-21
•
Expires: 1983-08-05
Abstract
No abstract record available.
Inventors
- 👤 George A Mitchell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:58
CPC Classifications
B; B24; B24B; B24B7/00; B24B7/10; B24B7/16; B24B7/162; G; G03; G03B; G03B9/00; G03B9/08; G03B9/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF PRODUCING A TRUE POLISHED FACE SURFACE OF REVOLUTION ON A ROTATIVE MEMBER SUCH A REFLECTIVE SHUTTER IN AN OPTICAL SURFACE PRODUCING MACHINE THAT HAS A ROTATING FLAT LAP AND A SHIFTING WORK CARRIER SAID METHOD COMPRISING THE STEPS OF, MOUNTING AT LEAST THREE SHUTTER BLANKS RIGIDLY ON THEIR OWN PERMANENT SPINDLES WHICH PROVIDE FIXED AXES OF ROTATION FOR THE BLANKS SUBSTANTIALLY IN THE PLANES OF THEIR OUTER FACES, MOUNTING SUCH BLANKS ON THE WORK CARRIER BY MOUNTING THEIR SPINDLES FOR FREE ROTATION ABOUT AND FOR AXIAL MOVEMENTS ALONG SAID AXES ON THE WORK CARRIER WITH
Claim 2
Independent Claim
98 words
THE METHOD OF PRODUCING A TRUE POLISHED FACE SURFACE OF REVOLUTION ON A ROTATIVE MEMBER SUCH A REFLECTIVE SHUTTER IN AN OPTICAL SURFACE PRODUCING MACHINE THAT HAS A ROTATING FLAT LAP AND A SHIFTING WORK CARRIER SAID METHOD COMPRISING THE STEPS OF, MOUNTING AT LEAST THREE SHUTTER BLANKS RIGIDLY ON THEIR OWN PERMANENT SPINDLES WHICH PROVIDE FIXED AXES OF ROTATION FOR THE BLANKS SUBSTANTIALLY IN THE PLANES OF THEIR OUTER FACES, MOUNTING SUCH BLANKS ON THE WORK CARRIER BY MOUNTING THEIR SPINDLES FOR FREE ROTATION ABOUT AND FOR AXIAL MOVEMENTS ALONG SAID AXES ON THE WORK CARRIER WITH
References Cited (Backward Citations)
US2830412A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-20 | 1969-06-21 | 1969-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-20 | 1973-06-21 | 1973-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-20 | 1977-06-21 | 1977-12-21 | $7700.00 | Window Closed / Lapsed |