US4016646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a resistor
Assignee: US Philips Corp
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Filing: 1975-11-20
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Granted: 1977-04-12
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Expires: 1995-11-20
Abstract
Abstract A method of making electrical resistors, in particular N.T.C. resistors for high temperature applications. The body of resistance material is provided with electrodes; and the ends of the leads are clamped against the electrodes in a case consisting of ceramic material which shrinks during sintering.
Inventors
- 👤 Franz Lucien Ghislain Pirotte
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:07
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/30; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49826; Y10T29/49863; Y10T29/49865
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
53 words
A method of manufacturing an electrical resistor comprising the steps of providing a body of resistance material having electrodes; providing leads having ends clamped against said electrodes; enveloping said body together with said ends of said leads with a formed mass of electrically non-conducting material which shrinks during sintering; and sintering said mass.
Claim 2
Independent Claim
53 words
A method of manufacturing an electrical resistor comprising the steps of providing a body of resistance material having electrodes; providing leads having ends clamped against said electrodes; enveloping said body together with said ends of said leads with a formed mass of electrically non-conducting material which shrinks during sintering; and sintering said mass.
Claim 3
Dependent Claim
46 words
A method as claimed in claim 1, further comprising the step of placing said body consisting of resistance material with the ends of the leads lying against the electrodes in a form filled under pressure with said mass of electrically non-conducting material which shrinks during sintering.
Claim 4
Dependent Claim
22 words
A method as claimed in claim 1, wherein said electrically non-conducting mass has a linear shrinkage of 10% or more during sintering.
Claim 5
Dependent Claim
41 words
A method as claimed in claim 1, further comprising the step of placing said body consisting of resistance material with the ends of the leads lying against the electrodes in a preformed mass of electrically non-conducting material which shrinks during sintering.
Claim 6
Dependent Claim
52 words
A method as claimed in claim 4, further comprising the steps of forming a tube of electrically non-conducting material provided with a suitable formed axial cavity said tube being divided into parts; and placing said resistance body with the ends of the leads lying against the electrodes in each of said parts.
Claim 7
Dependent Claim
47 words
A method as claimed in claim 4, further comprising the steps of forming a strip of electrically non-conducting material provided with cavities to accommodate resistance bodies with the ends of the leads against the electrodes, said cavities being covered with said formed mass of electrically non-conducting material.
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) | 1980-04-11 | 1980-10-11 | 1981-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-11 | 1984-10-11 | 1985-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-11 | 1988-10-11 | 1989-04-12 | $7700.00 | Window Closed / Lapsed |