Patent US2972784A successfully refreshed from Google Patents.
US2972784A
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US
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Method of encapsulating a magnet with polytetrafluoroethylene
Assignee: Arthur S La Pine & Co
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Filing: 1958-03-04
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Granted: 1961-02-28
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Expires: 1978-03-04
Abstract
No abstract record available.
Inventors
- 👤 Francis R Shonka
- 👤 Edward G Solecki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:52
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/68; B29C70/70; B29C31/00; B29C31/04; B29C31/06; B29C31/065; B29C31/066; B29C43/00; B29C43/02; B29C43/18; B29C43/32; B29C43/34; B29C43/36; B29C43/361; H; H01; H01F; H01F41/00; H01F41/02; H01F41/0253; H01F41/026; B29C2043/3615; B29K; B29K2027/00; B29K2027/12; B29K2027/18; B29K2105/00; B29K2105/06; B29K2105/20; B29K2105/203; B29K2105/25; B29K2105/251; B29K2705/00; B29L; B29L2031/00; B29L2031/34; B29L2031/3406; Y; Y10; Y10S; Y10S425/00; Y10S425/033; Y10S63/00; Y10S63/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF PREFORMING A TEFLON ENCAPSULATED ROD MAGNET COMPRISING IN COMBINATION, THE STEPS OF: DEPOSITING A FIRST QUANTITY OF GRANULAR TEFLON IN A MOLD CAVITY SO AS TO PROVIDE AN INCREASED HEIGHT OF THE UPPER SURFACE OF THE TEFLON AT OPPOSITE PORTIONS OF THE CAVITY, DISPOSING A ROD MAGNET ON THE DEPOSITED TEFLON IN A CENTERED POSITION TO EXTEND BETWEEN SAID OPPOSITE PORTIONS IN THE CAVITY, DEPOSITING A SECOND QUANTITY OF GRANULAR TEFLON OVER SAID FIRST QUANTITY AND MAGNET IN THE MOLD CAVITY, THE DEPOSITING OF THE SECOND QUANTITY BEING CONTROLLED TO DELIVER A GREATER AMOUNT OF THE TEFLON TO OPPOSITE PORTIONS OF THE CAVITY THAN TO THE PORTION THEREBETWEEN, AND URGING MEANS RELATIVELY TOGETHER IN THE CAVITY TO COMPACT THE TEFLON ABOUT SAID MAGNET WITHOUT SUBSTANTIAL FLOW THEREOF.
Claim 2
Independent Claim
130 words
THE METHOD OF PREFORMING A TEFLON ENCAPSULATED ROD MAGNET COMPRISING IN COMBINATION, THE STEPS OF: DEPOSITING A FIRST QUANTITY OF GRANULAR TEFLON IN A MOLD CAVITY SO AS TO PROVIDE AN INCREASED HEIGHT OF THE UPPER SURFACE OF THE TEFLON AT OPPOSITE PORTIONS OF THE CAVITY, DISPOSING A ROD MAGNET ON THE DEPOSITED TEFLON IN A CENTERED POSITION TO EXTEND BETWEEN SAID OPPOSITE PORTIONS IN THE CAVITY, DEPOSITING A SECOND QUANTITY OF GRANULAR TEFLON OVER SAID FIRST QUANTITY AND MAGNET IN THE MOLD CAVITY, THE DEPOSITING OF THE SECOND QUANTITY BEING CONTROLLED TO DELIVER A GREATER AMOUNT OF THE TEFLON TO OPPOSITE PORTIONS OF THE CAVITY THAN TO THE PORTION THEREBETWEEN, AND URGING MEANS RELATIVELY TOGETHER IN THE CAVITY TO COMPACT THE TEFLON ABOUT SAID MAGNET WITHOUT SUBSTANTIAL FLOW THEREOF.
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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) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |