Patent US4228353A successfully refreshed from Google Patents.
Patent US3048914A successfully refreshed from Google Patents.
US3048914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making resistors
Assignee: Individual
•
Filing: 1959-09-21
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Granted: 1962-08-14
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Expires: 1979-09-21
Abstract
No abstract record available.
Inventors
- 👤 Wilbur M Kohring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:17
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/02; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49826; Y10T29/49885
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
319 words
THE PROCESS OF PROVIDING A PROTECTIVE CASING ON THE SURFACE OF A RESISTOR ELEMENT COMPRISING A NON-CONDUCTIVE ELEMENT HAVING A CURRENT CONDUCTIVE FILM THEREON WITH HOLLOW TERMINAL END-CAPS SURROUNDING AND ELECTRICALLY CONNECTED TO THE FILM ON THE ENDS OF SAID ELEMENT, SAID END-CAPS HAVING A LARGER EXTERNAL DIAMETER THAN THAT OF THE FILM BETWEEN SAID END CAPS, SAID PROCESS COMPRISIING THE STEPS OF PROVIDING A PHENYL-METHYL-SILICONE RESIN SPRAYING SAID SILICONE RESIN ON SAID FILM BETWEEN SAID END-CAPS TO PROVIDE A COATING THEREON, THEN BAKING SAID RESISTOR ELEMENT WITH SAID COATING THEREON AT APPROXIMATELY 400*CFL FOR ABOUT ONE-HALF HOUR TO CURE SAID COATING, PROVIDING A TUBULAR CASING HAVING AN INTERNAL DIAMETER SLIGHTLY LARGER THAN THE EXTERNAL DIAMETER OF SAID END-CAPS AND SLIDING SAID CASING OVER SAID END-CAPS WITH THE OPEN END PORTIONS OF SAID CASING EXTENDING BEYOUND SAID END-CAPS AND WITH SAID END-CAPS FITTING CLOSELY WITHIN THE INTERNAL SURFACE OF SAID CASING AND CONCENTRICALLY SUPPORTING SAID INTERNAL SURFCE OF SAID CASING AROUND SAID FILM AT A CIRCUMFERENTIAL CLEARANCE SPACE THEREFROM, SEALING THE OPEN END PORTIONS OF SAID CASING TO ENCLOSE SAID RESISTOR ELEMENT THEREIN, THE STEPS OF SEALING INCLUDING THE FOLLOWING METHOD , PROVIDING A POWDER GLASS MATERIAL, A POLYSILOXAE RESIN, AND A SILICONE VARNISH, MIXING ABOUT FIFTY PERCENT BY VOLUME OF POWDER GLASS WITH ABOUT SAME AMOUNT OF POLYSILOXANE RESIN TO OBTAIN A GLASS-SILICONE MIXTURE, MIXING IN 20 PERCENT BY VOLUME OF SAID SILICONE VARNISH WITH ABOUT 80 PERCENT BY BY VOLUME OF SAID GLASS-SILICONE MIXTURE TO OBTAIN A SEALING MATERIAL, APPLYING SAID SEALING MATERIAL IN SAID OPEN END PORTIONS OF SAID CASING AGAINST SAID CLOSLEY FITTING WND-CAPS SO AS TO BLOCK SAID SEALING MATERIAL FROM CONTACTING SAID FILM TO ENCLOSE SAID RESISTOR ELEMENT THEREIN AIAR SETTING SAID SEALING MATERIAL FOR ABOUT TWENTY-FOUR HOURS AND THEN BAKING SAID SEALING MATERIAL IN SAID END PORTIONS AT APPROXIMATELY 400*F., FOR APPROXIMATELY ONE HOUR TO SEAL SAID RESISTOR ELEMENT IN SAID CASING
Claim 2
Dependent Claim
319 words
THE PROCESS OF PROVIDING A PROTECTIVE CASING ON THE SURFACE OF A RESISTOR ELEMENT COMPRISING A NON-CONDUCTIVE ELEMENT HAVING A CURRENT CONDUCTIVE FILM THEREON WITH HOLLOW TERMINAL END-CAPS SURROUNDING AND ELECTRICALLY CONNECTED TO THE FILM ON THE ENDS OF SAID ELEMENT, SAID END-CAPS HAVING A LARGER EXTERNAL DIAMETER THAN THAT OF THE FILM BETWEEN SAID END CAPS, SAID PROCESS COMPRISIING THE STEPS OF PROVIDING A PHENYL-METHYL-SILICONE RESIN SPRAYING SAID SILICONE RESIN ON SAID FILM BETWEEN SAID END-CAPS TO PROVIDE A COATING THEREON, THEN BAKING SAID RESISTOR ELEMENT WITH SAID COATING THEREON AT APPROXIMATELY 400*CFL FOR ABOUT ONE-HALF HOUR TO CURE SAID COATING, PROVIDING A TUBULAR CASING HAVING AN INTERNAL DIAMETER SLIGHTLY LARGER THAN THE EXTERNAL DIAMETER OF SAID END-CAPS AND SLIDING SAID CASING OVER SAID END-CAPS WITH THE OPEN END PORTIONS OF SAID CASING EXTENDING BEYOUND SAID END-CAPS AND WITH SAID END-CAPS FITTING CLOSELY WITHIN THE INTERNAL SURFACE OF SAID CASING AND CONCENTRICALLY SUPPORTING SAID INTERNAL SURFCE OF SAID CASING AROUND SAID FILM AT A CIRCUMFERENTIAL CLEARANCE SPACE THEREFROM, SEALING THE OPEN END PORTIONS OF SAID CASING TO ENCLOSE SAID RESISTOR ELEMENT THEREIN, THE STEPS OF SEALING INCLUDING THE FOLLOWING METHOD , PROVIDING A POWDER GLASS MATERIAL, A POLYSILOXAE RESIN, AND A SILICONE VARNISH, MIXING ABOUT FIFTY PERCENT BY VOLUME OF POWDER GLASS WITH ABOUT SAME AMOUNT OF POLYSILOXANE RESIN TO OBTAIN A GLASS-SILICONE MIXTURE, MIXING IN 20 PERCENT BY VOLUME OF SAID SILICONE VARNISH WITH ABOUT 80 PERCENT BY BY VOLUME OF SAID GLASS-SILICONE MIXTURE TO OBTAIN A SEALING MATERIAL, APPLYING SAID SEALING MATERIAL IN SAID OPEN END PORTIONS OF SAID CASING AGAINST SAID CLOSLEY FITTING WND-CAPS SO AS TO BLOCK SAID SEALING MATERIAL FROM CONTACTING SAID FILM TO ENCLOSE SAID RESISTOR ELEMENT THEREIN AIAR SETTING SAID SEALING MATERIAL FOR ABOUT TWENTY-FOUR HOURS AND THEN BAKING SAID SEALING MATERIAL IN SAID END PORTIONS AT APPROXIMATELY 400*F., FOR APPROXIMATELY ONE HOUR TO SEAL SAID RESISTOR ELEMENT IN SAID CASING
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |