Patent US3238490A successfully refreshed from Google Patents.
US3238490A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composition resistor with embedded terminal lead head
Assignee: Allen Bradley Co LLC
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Filing: 1958-03-12
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Granted: 1966-03-01
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Expires: 1978-03-12
Abstract
No abstract record available.
Inventors
- 👤 Homer G Thomson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:02
CPC Classifications
H; H01; H01C; H01C7/00; H01C7/001; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49098
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A MOLDED COMPOSITION FIXED RESISTOR, COMPRISING AN INTEGRAL BODY, MADE OF MOLDABLE INSULATING MATERIAL; MINUTE CONDUCTOR PARTICLES DISTRIBUTED THROUGHOUT AT LEAST A PORTION OF SAID INSULATING MATERIAL TO FORM A HIGH-RESISTANCE CONDUCTING PATH THERETHROUGH; AND AT EACH END OF SAID RESISTANCE PATH A TERMINAL ELECTRODE, WHICH COMPRISES A LEAD-WIRE AND AN ENLARGED HEAD, COAXIAL AND INTEGRAL THEREWITH, THE HEAD BEING INTIMATELY EMBEDDED IN THE BODY IN INTIMATE CONDUCTIVE CONTACT WITH THE RESISTANCE PATH PORTION OF SAID BODY; WHEREIN EACH HEAD COMPRISES AN INNER ENLARGED PORTION, AN OUTER ENLARGED PORTION, AND A CONSTRICTED PORTION BETWEEN THE TWO ENLARGED PORTIONS, THE OUTER FACE OF THE OUTER ENLARGED PORTION BEING EXPOSED THROUGH AND FLUSH WITH A FACE OF THE BODY AND CONSTITUTING AN OUTWARDLY FACING SHOULDER OF THE TERMINAL ELECTRODE; ALL OF THE HEAD INWARDLY FROM THE EXPOSED PORTION OF THE HEAD BEING IN INTIMATE SUPPORTING CONTACT WITH THE BODY; WHEREIN THE CONSTRICTED PORTIONS OF THE HEAD IS FLATTENED TO ENABLE THE HEAD TO RESIST TURNING WITH RESPECT TO THE BODY.
Claim 2
Dependent Claim
168 words
A MOLDED COMPOSITION FIXED RESISTOR, COMPRISING AN INTEGRAL BODY, MADE OF MOLDABLE INSULATING MATERIAL; MINUTE CONDUCTOR PARTICLES DISTRIBUTED THROUGHOUT AT LEAST A PORTION OF SAID INSULATING MATERIAL TO FORM A HIGH-RESISTANCE CONDUCTING PATH THERETHROUGH; AND AT EACH END OF SAID RESISTANCE PATH A TERMINAL ELECTRODE, WHICH COMPRISES A LEAD-WIRE AND AN ENLARGED HEAD, COAXIAL AND INTEGRAL THEREWITH, THE HEAD BEING INTIMATELY EMBEDDED IN THE BODY IN INTIMATE CONDUCTIVE CONTACT WITH THE RESISTANCE PATH PORTION OF SAID BODY; WHEREIN EACH HEAD COMPRISES AN INNER ENLARGED PORTION, AN OUTER ENLARGED PORTION, AND A CONSTRICTED PORTION BETWEEN THE TWO ENLARGED PORTIONS, THE OUTER FACE OF THE OUTER ENLARGED PORTION BEING EXPOSED THROUGH AND FLUSH WITH A FACE OF THE BODY AND CONSTITUTING AN OUTWARDLY FACING SHOULDER OF THE TERMINAL ELECTRODE; ALL OF THE HEAD INWARDLY FROM THE EXPOSED PORTION OF THE HEAD BEING IN INTIMATE SUPPORTING CONTACT WITH THE BODY; WHEREIN THE CONSTRICTED PORTIONS OF THE HEAD IS FLATTENED TO ENABLE THE HEAD TO RESIST TURNING WITH RESPECT TO THE BODY.
References Cited (Backward Citations)
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |