US3989515A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alloys for tension bands
Assignee: Individual
•
Filing: 1975-06-09
•
Granted: 1976-11-02
•
Expires: 1995-06-09
Abstract
Abstract High quality factor, low torsion modulus alloys especially useful as tension bands for measuring are composed essentially of platinum or palladium admixed with at least one element of Groups III, IV, V and VI of the Periodic Table excluding boron, carbon, nitrogen and oxygen.
Inventors
- 👤 Karl H. Reiff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:13
CPC Classifications
C; C22; C22C; C22C5/00; C22C5/04
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
109 words
In a method of operating a measuring instrument having a rotatable meter mechanism and a taut strip, the improvement comprising providing as the taut strip, a low modulus of torsion, high quality factor alloy consisting essentially of palladium or platinum as a predominant metal, an additive of at least one element selected from the group consisting of aluminum, gallium, indium, silicon, germanium, tin, lead, arsenic, antimony, bismuth, selenium and tellurium, and at least one further element selected from the group consisting of gold, silver and copper, said additive and further element being present in such quantities that the corrosion resistance and the workability of the predominant metal is maintained.
Claim 2
Dependent Claim
109 words
In a method of operating a measuring instrument having a rotatable meter mechanism and a taut strip, the improvement comprising providing as the taut strip, a low modulus of torsion, high quality factor alloy consisting essentially of palladium or platinum as a predominant metal, an additive of at least one element selected from the group consisting of aluminum, gallium, indium, silicon, germanium, tin, lead, arsenic, antimony, bismuth, selenium and tellurium, and at least one further element selected from the group consisting of gold, silver and copper, said additive and further element being present in such quantities that the corrosion resistance and the workability of the predominant metal is maintained.
Claim 3
Dependent Claim
31 words
The method as defined in claim 1 wherein the alloy consists essentially of 2 to 6 percent by weight aluminum, 1 to 30 percent by weight copper and/or silver, balance palladium.
Claim 4
Dependent Claim
40 words
The method as defined in claim 2 wherein the alloy consists essentially of 92 percent by weight palladium, 4 percent by weight aluminum, and 4 percent by weight copper and the quality factor Z of the taut strip is 3.06.
Claim 5
Dependent Claim
40 words
The method as defined in claim 2 wherein the alloy consists essentially of 92 percent by weight palladium, 4 percent by weight aluminum, and 4 percent by weight silver and the quality factor Z of the taut strip is 3.23.
Claim 6
Dependent Claim
40 words
The method as defined in claim 2 wherein the alloy consists essentially of 76 percent by weight palladium, 4 percent by weight aluminum, and 20 percent by weight copper and the quality factor Z of the taut strip is 3.47.
Claim 7
Dependent Claim
20 words
The method as defined in claim 1 wherein the alloy contains at least 76 percent by weight palladium or platinum.
Claim 8
Dependent Claim
20 words
The method as defined in claim 1 wherein the quality factor Z of the strip is from 3.06 to 3.73.
Claim 9
Dependent Claim
40 words
The method as defined in claim 7 wherein the alloy consists essentially of 80 percent by weight palladium, 10 percent by weight gallium, and 10 percent by weight copper, and the quality factor Z of the taut strip is 3.73.
Claim 10
Dependent Claim
62 words
The method as defined in claim 7 wherein the alloy consists essentially of 2 to 20 percent by weight silver, 5 to 15 percent by weight gallium, 2 to 20 percent by weight copper, and the remainder palladium, with the total silver and copper content being less than 30 percent by weight so that the alloy contains more than 50 percent palladium.
Claim 11
Dependent Claim
34 words
The method as defined in claim 9 wherein the alloy consists essentially of 75 percent by weight palladium, 10 percent by weight silver, 10 percent by weight gallium and 5 percent by weight copper.
Claim 12
Dependent Claim
23 words
The method as defined in claim 10 wherein the elastic after-effect of the taut strip manufactured from this alloy is less than 0.005%
Claim 13
Dependent Claim
111 words
A low modulus of torsion, high quality factor taut strip for measuring instruments, said taut strip being formed of an alloy consisting essentially of palladium or platinum as a predominant metal, an additive of at least one element selected from the group consisting of aluminum, gallium, indium, silicon, germanium, tin, lead, arsenic, antimony, bismuth, selenium and tellurium, and at least one further element selected from the group consisting of gold, silver and copper, said additive and further element being present in such quantities that the corrosion resistance and the workability of the predominant metal is maintained and wherein the quality factor Z of the taut strip is from 3.06 to 3.73.
Claim 14
Dependent Claim
111 words
A low modulus of torsion, high quality factor taut strip for measuring instruments, said taut strip being formed of an alloy consisting essentially of palladium or platinum as a predominant metal, an additive of at least one element selected from the group consisting of aluminum, gallium, indium, silicon, germanium, tin, lead, arsenic, antimony, bismuth, selenium and tellurium, and at least one further element selected from the group consisting of gold, silver and copper, said additive and further element being present in such quantities that the corrosion resistance and the workability of the predominant metal is maintained and wherein the quality factor Z of the taut strip is from 3.06 to 3.73.
Claim 15
Dependent Claim
32 words
The taut strip as defined in claim 12 wherein the alloy consists essentially of 2 to 6 percent by weight aluminum, 1 to 30 percent by weight copper and/or silver, balance palladium.
Claim 16
Dependent Claim
41 words
The taut strip as defined in claim 13 wherein the alloy consists essentially of 92 percent by weight palladium, 4 percent by weight aluminum, and 4 percent by weight copper and the quality factor Z of the taut strip is 3.06.
Claim 17
Dependent Claim
41 words
The taut strip as defined in claim 13 wherein the alloy consists essentially of 92 percent by weight palladium, 4 percent by weight aluminum, and 4 percent by weight silver and the quality factor Z of the taut strip is 3.23.
Claim 18
Dependent Claim
41 words
The taut strip as defined in claim 13 wherein the alloy consists essentially of 76 percent by weight palladium, 4 percent by weight aluminum, and 20 percent by weight copper and the quality factor Z of the taut strip is 3.47.
Claim 19
Dependent Claim
21 words
The taut strip as defined in claim 12 wherein the alloy contains at least 76 percent by weight palladium or platinum.
Claim 20
Dependent Claim
63 words
The taut strip as defined in claim 12 wherein the alloy consists essentially of 2 to 20 percent by weight silver, 5 to 15 percent by weight gallium, 2 to 20 percent by weight copper, and the remainder palladium, with the total silver and copper content being less than 30 percent by weight so that the alloy contains more than 50 percent palladium.
Claim 21
Dependent Claim
35 words
The taut strip as defined in claim 18 wherein the alloy consists essentially of 75 percent by weight palladium, 10 percent by weight silver, 10 percent by weight gallium and 5 percent by weight copper.
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) | 1979-11-02 | 1980-05-03 | 1980-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-02 | 1984-05-03 | 1984-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-02 | 1988-05-03 | 1988-11-02 | $7700.00 | Window Closed / Lapsed |