US4045659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for the evaluation of yarn qualities
Assignee: Asahi Kasei Corp
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Filing: 1976-04-07
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Granted: 1977-08-30
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Expires: 1996-04-07
Abstract
Abstract The invention resides in an improved apparatus for the evaluation of qualities of a running continuous yarn. The apparatus is provided with a capacitive sensor through which the yarn is passed continuously. The apparatus is also provided with a device for extracting from the sensor an output signal with amplitude or frequency components frequency distribution. It is further provided with an electronic calculating device which determines the mean and standard deviation from the foregoing distributory information.
Inventors
- 👤 Masatake Akagawa
- 👤 Tsutomu Tamura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:41
CPC Classifications
G; G01; G01B; G01B7/00; G01B7/12; G01B7/125; G01N; G01N33/00; G01N33/36; G01N33/365
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
An apparatus for evaluating the characteristics of a continuous yarn, said apparatus comprising: a. sensor means for sensing a property of the yarn and for producing a first signal in response thereto; b. first circuit means coupled to said sensor means for receiving said first signal and for producing a second signal which is a function of the amplitude component frequency distribution of said first signal; c. second circuit means coupled to said sensor means for receiving said first signal and for producing a third signal which is a function of the frequency component frequency distribution of said first signal; and d. calculating means coupled to said first and second circuit means for receiving said second and third signals and for calculating the mean value and standard deviation of each of said signals.
Claim 2
Independent Claim
133 words
An apparatus for evaluating the characteristics of a continuous yarn, said apparatus comprising: a. sensor means for sensing a property of the yarn and for producing a first signal in response thereto; b. first circuit means coupled to said sensor means for receiving said first signal and for producing a second signal which is a function of the amplitude component frequency distribution of said first signal; c. second circuit means coupled to said sensor means for receiving said first signal and for producing a third signal which is a function of the frequency component frequency distribution of said first signal; and d. calculating means coupled to said first and second circuit means for receiving said second and third signals and for calculating the mean value and standard deviation of each of said signals.
Claim 3
Dependent Claim
89 words
The apparatus of claim 1 wherein said first circuit means comprises: a. a sample and hold means coupled to the output of said sensor means; b. ramp signal generator means; c. comparator means coupled to the output of said sample and hold means and said ramp signal generator means for receiving the outputs thereof and for generating an output upon the coincidence thereof; d. memory adder means coupled to the output of said comparator means, wherein the output of said memory adder means is applied to said calculating means.
Claim 4
Dependent Claim
139 words
The apparatus of claim 1 wherein said second circuit means comprises: a. a zero crossing detector means coupled to said sensor means for producing a rectangular output signal in accordance with the zero crossings of the output of said sensor means; b. integrator means coupled to said zero crossing detector means for integrating the output thereof; c. sample and hold means coupled to the output of said integrator means for receiving the output thereof; d. ramp signal generator means; e. comparator means coupled to the output of said sample and hold means and said ramp signal generator means for receiving the outputs thereof and for generating an output upon the coincidence thereof; and f. memory adder means coupled to the output of said comparator means, wherein the output of said memory adder means is coupled to said calculating means.
Claim 5
Dependent Claim
19 words
The apparatus of claim 1 wherein said sensor means comprises a capacitive sensor and a filter means coupled thereto.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-29 | 1981-02-28 | 1981-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-29 | 1985-02-28 | 1985-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-29 | 1989-02-28 | 1989-08-30 | $7700.00 | Window Closed / Lapsed |