US3701392A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flat vibrating measuring string
Assignee: August Sauter KG
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Filing: 1970-12-17
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Granted: 1972-10-31
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Expires: 1990-12-17
Abstract
Abstract A flat vibrating measuring string or ribbon suitable for use with a vibrating string weighing apparatus. The cross-section of the string is selected with such a large ratio of the largest to the smallest cross-sectional axis that the resonant frequencies of the desired mth vibrating mode in the direction of the minimum bending rigidity are situated below the resonant frequencies of the first mode in the transverse direction. The string is also enlarged at its ends, preferably by means of interconnecting rounded portions, to minimize the peak stress where the string is clamped. To further minimize the tension at the ends of the string where they are clamped, the string is secured to a junction mass having a resistance and modulus of elasticity which is within an order to magnitude of that of the string.
Inventors
- 👤 Walter Wirth
- 👤 Burkhart Kuhl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:08
CPC Classifications
G; G01; G01G; G01G3/00; G01G3/12; G01G3/16; G01G3/165; G01L; G01L1/00; G01L1/10; G01L1/106; Y; Y10; Y10S; Y10S73/00; Y10S73/01
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
71 words
A flat vibrating measuring string, particularly suitable for a vibrating weighing device, said string having a cross-section which is not round and having such a large ratio of the largest to the smallest cross-sectional axes that the resonant frequencies of a desired vibration mode m > OR = 2 in the direction of the minimum bending rigidity are situated below the resonant frequency of the first mode in the transverse direction.
Claim 2
Dependent Claim
71 words
A flat vibrating measuring string, particularly suitable for a vibrating weighing device, said string having a cross-section which is not round and having such a large ratio of the largest to the smallest cross-sectional axes that the resonant frequencies of a desired vibration mode m > OR = 2 in the direction of the minimum bending rigidity are situated below the resonant frequency of the first mode in the transverse direction.
Claim 3
Dependent Claim
22 words
A string as defined in claim 1 wherein the ratio of the largest to the smallest cross-sectional axis is larger than m2.
Claim 4
Dependent Claim
22 words
A string as defined in claim 1 wherein the ratio of the largest to the smallest cross-sectional axis is at least 2m2.
Claim 5
Dependent Claim
21 words
A string as defined in claim 1 wherein said string has the shape of a flat ribbon with a rectangular cross-section.
Claim 6
Dependent Claim
22 words
A string as defined in claim 1 wherein junction masses of synthetic material are provided for clamping the ends of said string.
Claim 7
Dependent Claim
30 words
A string as defined in claim 5 wherein said junction masses are each provided with a recess filled with a hardenable adhesive to provide a glued joint for said string.
Claim 8
Dependent Claim
34 words
A string as defined in claim 6 wherein said recess in said junction masses has a curved shape with an interior region where the boundaries of said recess are closely adjacent to each other.
Claim 9
Dependent Claim
12 words
A string as defined in claim 6 wherein said recess is wedge-shaped.
Claim 10
Dependent Claim
21 words
A string as defined in claim 8 wherein said recess extends substantially to the center of each of said junction masses.
Claim 11
Dependent Claim
15 words
A string as defined in claim 6 wherein said recess is of substantially rectangular cross-section.
Claim 12
Dependent Claim
21 words
A string as defined in claim 10 wherein said recess extends substantially to the center of each of said junction masses.
Claim 13
Dependent Claim
105 words
A flat vibrating measuring string, particularly suitable for a vibrating measuring device, said string having the shape of a flat ribbon with a rectangular cross-section and having such a large ratio of the largest to the smallest cross-sectional axes that the resonant frequencies of a desired vibration mode m in the direction of the minimum bending rigidity is situated below the resonant frequency of the first mode in the transverse direction, wherein said string is provided at each of its ends with a ribbon-like enlargement for securing the ends of said string and wherein said string has curved portion between said string and said enlargements.
Claim 14
Dependent Claim
105 words
A flat vibrating measuring string, particularly suitable for a vibrating measuring device, said string having the shape of a flat ribbon with a rectangular cross-section and having such a large ratio of the largest to the smallest cross-sectional axes that the resonant frequencies of a desired vibration mode m in the direction of the minimum bending rigidity is situated below the resonant frequency of the first mode in the transverse direction, wherein said string is provided at each of its ends with a ribbon-like enlargement for securing the ends of said string and wherein said string has curved portion between said string and said enlargements.
Claim 15
Dependent Claim
22 words
A string as defined in claim 12 wherein said curved portions have a radius which approximately equals the width of said string.
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) | 1975-10-31 | 1976-05-01 | 1976-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-31 | 1980-05-01 | 1980-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-31 | 1984-05-01 | 1984-10-31 | $7700.00 | Window Closed / Lapsed |