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US3833407A Expired / Lapsed US ⏱️ 0.0 years remaining

Unitary resistor and shunt

Assignee: Honeywell Inc
•
Filing: 1972-06-12
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Granted: 1974-09-03
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Expires: 1992-06-12
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Abstract

Abstract A method of producing a distributed shunt for resistor film. The steps of this method comprising the selection of a conductive material whose sintering temperature is substantially lower than the sintering temperature of the resistive material; locating the conductive material in single or segmented form on the surfade of the resistive material intermediate end portions of the latter and firing the conductive material on the resistive material at the sintering temperature of the conductive material whereby the tendency to diffusion between said conductive and resistive materials is minimized and the resistivity of the resistive material is reduced while maintaining substantially constant the temperature coefficiient of resistivity and stability of the resistive material.

Inventors

  • 👤 S Schebalin

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 01:13
CPC Classifications
H; H01; H01C; H01C17/00; H01C17/28; H01C17/281; H01C10/00; H01C10/06; H01C7/00

Claims Analysis

Total Claims: 1
Claim 1
Independent Claim 131 words
The method of producing a distributed shunt for resistor film, comprising the steps of firing a ruthenium-ruthenium oxide-glass frit resistor material onto an electrically non-conductive substrate at the sintering temperature of approximately 1000 degrees C of said resistive material, and thereafter firing silver-glass conductive material in segmented form on the surface of said fired resistive material intermediate end portions of the latter, said second firing being at the sintering temperature of approximately 550 degrees C of said conductive material, whereby the tendency to diffusion between said conductive and resistive materials is minimized and the resistivity of said resistive material is reduced due to the shunting effect of said conductive material on said resistive material, and whereby the temperature coefficient of resistivity and stability of said resistive material is maintained substantially constant.

References Cited (Backward Citations)

US3274669A Cited
US3381255A Cited
US3567507A Cited
US3699650A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1977-09-02 1978-03-04 1978-09-03 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1981-09-02 1982-03-04 1982-09-03 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1985-09-02 1986-03-04 1986-09-03 $7700.00 Window Closed / Lapsed

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