US3280715A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Micropattern aligning device
Assignee: RTX Corp
•
Filing: 1964-06-11
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Granted: 1966-10-25
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Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Edwin A Corl
- 👤 Andrew P Koehm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:01
CPC Classifications
G; G03; G03F; G03F9/00; G03F9/70; H; H10; H10P; H10P72/00; H10P72/50; H10P72/57; Y; Y10; Y10S; Y10S101/00; Y10S101/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
189 words
A MICROPATTERN ALIGNING DEVICE INCLUDING IN COMBINATION A BASE, A PEDESTAL FORMED WITH A FLANGE, MEANS MOUNTING SAID PEDESTAL ON SAID BASE, SAID FLANGE HAVING A POLISHED SURFACE, SAID SURFACE BEING WITH AN ANNULAR GROOVE, A CHUCK FORMED WITH A FLANGE, SAID FLANGE HAVING A POLISHED SURFACE, SAID SURFACE OF SAID FLANGE AND WITH A GROOVE, THE POLISHED SURFACE OF SAID FLANGE AND THE POLISHED SURFACE OF SAID PEDESTAL BEING ADAPTED TO MATE, A VISCOUS FLUID POSITIONED BETWEEN SAID MATING SURFACES, SAID GROOVES BEING ADAPTED TO FORM A RESERVOIR FOR SAID VISCOUS FLUID, SAID CHUCK BEING FORMED WITH A BORE AND PROVIDED WITH AN OPENING COMMUNICATING WITH THE ATMOSPHERE THROUGH WHICH REDUCED PRESSURE IS ADAPTED TO BE APPLIED TO THE INTERIOR OF SAID CHUCK, A RIGID MICROPOROUS DISC CARRIED BY THE UPPER PORTION OF SAID CHUCK AND COMMUNICATING WITH SAID BORE, A RESILIENT FORAMINOUS DISC CARRIED BY SAID RIGID MICROPOROUS DISC, A CARRIER, MEANS FOR SUPPORTING SAID CARRIER ON SAID BASE AROUND SAID CHUCK, AN ANNULAR ELECTROMAGNET CARRIED BY SAID CARRIER, MEANS FOR MOVING SAID CARRIER AWAY FROM AND TOWARD SAID BASE, A PLURALITY OF SPRINGS CARRIED BY SAID
Claim 2
Dependent Claim
189 words
A MICROPATTERN ALIGNING DEVICE INCLUDING IN COMBINATION A BASE, A PEDESTAL FORMED WITH A FLANGE, MEANS MOUNTING SAID PEDESTAL ON SAID BASE, SAID FLANGE HAVING A POLISHED SURFACE, SAID SURFACE BEING WITH AN ANNULAR GROOVE, A CHUCK FORMED WITH A FLANGE, SAID FLANGE HAVING A POLISHED SURFACE, SAID SURFACE OF SAID FLANGE AND WITH A GROOVE, THE POLISHED SURFACE OF SAID FLANGE AND THE POLISHED SURFACE OF SAID PEDESTAL BEING ADAPTED TO MATE, A VISCOUS FLUID POSITIONED BETWEEN SAID MATING SURFACES, SAID GROOVES BEING ADAPTED TO FORM A RESERVOIR FOR SAID VISCOUS FLUID, SAID CHUCK BEING FORMED WITH A BORE AND PROVIDED WITH AN OPENING COMMUNICATING WITH THE ATMOSPHERE THROUGH WHICH REDUCED PRESSURE IS ADAPTED TO BE APPLIED TO THE INTERIOR OF SAID CHUCK, A RIGID MICROPOROUS DISC CARRIED BY THE UPPER PORTION OF SAID CHUCK AND COMMUNICATING WITH SAID BORE, A RESILIENT FORAMINOUS DISC CARRIED BY SAID RIGID MICROPOROUS DISC, A CARRIER, MEANS FOR SUPPORTING SAID CARRIER ON SAID BASE AROUND SAID CHUCK, AN ANNULAR ELECTROMAGNET CARRIED BY SAID CARRIER, MEANS FOR MOVING SAID CARRIER AWAY FROM AND TOWARD SAID BASE, A PLURALITY OF SPRINGS CARRIED BY SAID
References Cited (Backward Citations)
US2437229A
Cited
US3192844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-24 | 1970-04-25 | 1970-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-24 | 1974-04-25 | 1974-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-24 | 1978-04-25 | 1978-10-25 | $7700.00 | Window Closed / Lapsed |