Patent US3201849A successfully refreshed from Google Patents.
US3201849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of winding helices
Assignee: AT&T Inc
•
Filing: 1959-11-03
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Granted: 1965-08-24
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Expires: 1979-11-03
Abstract
No abstract record available.
Inventors
- 👤 Robert G Voss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 22:32
CPC Classifications
H; H01; H01J; H01J23/00; H01J23/16; H01J23/24; H01J23/26; H01J23/27; H01J19/00; H01J2893/00; H01J2893/0001; H01J2893/0012; H01J2893/0019; H01J2893/0022; H01J2893/0023; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49016; Y10T29/4902; Y10T29/49071
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
161 words
A PROCESS FOR WINDING A WIRE HELIX COMPRISING THE STEPS OF SPRAYING A MANDREL UPON WHICH THE HELIX IS TO BE WOUND WITH A COLLOIDAL SUSPENSION OF GRAPHITE IN WATER, LETTING THE COATING THUS SPRAYED HARDEN, WINDING THE HELIX UNDER TENSION ON SAID MANDREL WHEREBY THE TURNS OF THE HELIX BECOME IMBEDDED IN SAID COATING TO A DEPTH OF APPROXIMATELY HALF THE THICKNESS OF SAID COATING, PLACING PREGLAZED SUPPORT RODS IN CONTACT WITH THE HELIX THUS WOUND THE GLAZE MATERIAL ON SAID SUPPORT RODS HAVING A MELTING POINT SUCH THAT IT BECOMES TACKY AT THE TELPERATURE AT WHICH THE GRAPHITE COATING BURNS OFF, AND INTRODUCING THE MANDREL, THE HELIX AND THE SUPPORT RODS THUS ASSEMBLED INTO A FURNACE HAVING AN ATMOSPHERE OF WET FORMING GAS AND HEATING THE ASSEMBLY UNTIL THE COATING ON SAID MANDREL SUBSTANTIALLY COMPLETELY BURNS OFF AND THE GLAZING MATERIAL ON THE SUPPORT RODS ADHERES TO THE HELIX, COOLING THE ASSEMBLY, AND WITHDRAWING THE MANDREL FROM THE HELIX.
Claim 2
Dependent Claim
161 words
A PROCESS FOR WINDING A WIRE HELIX COMPRISING THE STEPS OF SPRAYING A MANDREL UPON WHICH THE HELIX IS TO BE WOUND WITH A COLLOIDAL SUSPENSION OF GRAPHITE IN WATER, LETTING THE COATING THUS SPRAYED HARDEN, WINDING THE HELIX UNDER TENSION ON SAID MANDREL WHEREBY THE TURNS OF THE HELIX BECOME IMBEDDED IN SAID COATING TO A DEPTH OF APPROXIMATELY HALF THE THICKNESS OF SAID COATING, PLACING PREGLAZED SUPPORT RODS IN CONTACT WITH THE HELIX THUS WOUND THE GLAZE MATERIAL ON SAID SUPPORT RODS HAVING A MELTING POINT SUCH THAT IT BECOMES TACKY AT THE TELPERATURE AT WHICH THE GRAPHITE COATING BURNS OFF, AND INTRODUCING THE MANDREL, THE HELIX AND THE SUPPORT RODS THUS ASSEMBLED INTO A FURNACE HAVING AN ATMOSPHERE OF WET FORMING GAS AND HEATING THE ASSEMBLY UNTIL THE COATING ON SAID MANDREL SUBSTANTIALLY COMPLETELY BURNS OFF AND THE GLAZING MATERIAL ON THE SUPPORT RODS ADHERES TO THE HELIX, COOLING THE ASSEMBLY, AND WITHDRAWING THE MANDREL FROM THE HELIX.
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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) | 1968-08-23 | 1969-02-22 | 1969-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-23 | 1973-02-22 | 1973-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-23 | 1977-02-22 | 1977-08-24 | $7700.00 | Window Closed / Lapsed |