Patent US3081074A successfully refreshed from Google Patents.
US3081074A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for annealing coils of strip metal
Assignee: Individual
•
Filing: 1957-12-19
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Granted: 1963-03-12
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Expires: 1977-12-19
Abstract
No abstract record available.
Inventors
- 👤 Calvin C Blackman
- 👤 Robert J Beemer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 20:42
CPC Classifications
C; C21; C21D; C21D9/00; C21D9/52; C21D9/54; C21D9/663; C21D9/673
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
132 words
A COIL SPACER FOR SPACING APART OPEN COILS DURING ANNEALING HAVING AN OUTER PERIPHERY AND INCLUDING, A PLURALITY OF CIRCUMFERENTIALLY SPACED RADIALLY EXTENDING WEB MEMBERS HAVING THEIR OUTER ENDS DISPOSED AT THE OUTER PERIPHERY OF THE SPACER, SAID WEBS HAVING THEIR LOWER EDGES LYING IN A COMMON BOTTOM PLANE AND ADAPTED TO REST ON THE TOP OF A COIL TO BE ANNEALED AND THEIR UPPER EDGES LYING IN A TOP COMMON PLANE AND ADAPTED TO SUPPORT A SECOND COIL RESTING THEREON, AND BAFFLE WALL MEANS INTERMEDIATE SAID COMMON PLANES AND HAVING A CENTRAL OPENING THEREIN, SAID BAFFLE WALL MEANS FORMING SEPARATE NON-COMMUNICATING UPPER AND LOWER PLENUM CHAMBERS AND EXTENDING FROM THE OUTER PERIPHERY OF SAID SPACER AT SAID TOP COMMON PLANE AND HAVING SAID CENTRAL OPENING LYING IN SAID BOTTOM COMMON PLANE.
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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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |