Patent US3586914A successfully refreshed from Google Patents.
US3586914A
Expired / Lapsed
US
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Overload shunt with single resistor element
Assignee: Siemens AG
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Filing: 1969-11-21
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Granted: 1971-06-22
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Expires: 1989-11-21
Abstract
Abstract An overload shunt includes at least one resistor element having a nonlinear resistance and comprising material compressed from at least two directions toward each other. The resistor element has a width formed in the directions of compression and a length parallel to its longitudinal axis and perpendicular to the directions of compression. The length is at least as great as the width. The resistor element is positioned in a manner whereby current in the overload shunt flows along the length of the resistor element perpendicularly to the directions of compression.
Inventors
- 👤 Rudolf Foitzik
- 👤 Klaus Reichelt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:42
CPC Classifications
H; H01; H01T; H01T1/00; H01T1/16; H01C; H01C7/00; H01C7/10; H01C7/12; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49082; Y10T29/49087; Y10T29/49089; Y10T29/49091
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
91 words
An overload shunt including: at least one resistor element having a nonlinear resistance and comprising material compressed at least two directions toward each other, said resistor element having a width formed in the directions of compression and a length parallel to its longitudinal axis and perpendicular to the directions of compression, said length being at least as great as said width; and positioning means positioning said resistor element in a manner whereby current in said overload shunt flows along the length of the resistor element perpendicularly to said directions of compression.
Claim 2
Dependent Claim
91 words
An overload shunt including: at least one resistor element having a nonlinear resistance and comprising material compressed at least two directions toward each other, said resistor element having a width formed in the directions of compression and a length parallel to its longitudinal axis and perpendicular to the directions of compression, said length being at least as great as said width; and positioning means positioning said resistor element in a manner whereby current in said overload shunt flows along the length of the resistor element perpendicularly to said directions of compression.
Claim 3
Dependent Claim
27 words
An overload shunt as claimed in claim 1, wherein the length of the resistor element is several times greater than its width in the directions of compression.
Claim 4
Dependent Claim
17 words
An overload shunt as claimed in claim 2, wherein said resistor element has a rectangular cross-sectional area.
Claim 5
Dependent Claim
17 words
An overload shunt as claimed in claim 2, wherein said resistor element has a prismatic cross-sectional area.
Claim 6
Dependent Claim
17 words
An overload shunt as claimed in claim 2, wherein said resistor element has a circular cross-sectional area.
Claim 7
Dependent Claim
28 words
An overload shunt as claimed in claim 2, wherein said positioning means comprises a tubular member coaxially surrounding said resistor elements, said tubular member comprising electrically insulating material.
Claim 8
Dependent Claim
32 words
An overload shunt as claimed in claim 2, further comprising spark gap means and at least two of said resistor elements coaxially positioned one on either side of the spark gap means.
Claim 9
Dependent Claim
64 words
An overload shunt as claimed in claim 2, further comprising spark gap means and a plurality of said resistor elements, a first plurality of said resistor elements being positioned on one side of said spark gap means and a second plurality of said resistor elements being positioned coaxially with said first plurality of resistor elements on the other side of said spark gap means.
Claim 10
Dependent Claim
36 words
An overload shunt as claimed in claim 8, further comprising a tubular member coaxially positioned around said first and second pluralities of resistor elements and said spark gap means, said tubular member comprising electrically insulating material.
Claim 11
Dependent Claim
46 words
An overload shunt as claimed in claim 9, wherein the resistor elements of said first plurality of resistor elements are electrically connected in parallel with each other and the resistor elements of said second plurality of resistor elements are electrically connected in parallel with each other.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |