US4182167A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Yarn tension meter
Assignee: Toray Industries Inc
•
Filing: 1978-09-07
•
Granted: 1980-01-08
•
Expires: 1998-09-07
Abstract
Abstract A yarn tension meter comprising a tension detecting unit, a rotary guide, at least one force transducer and fixed guides which, without damaging a running yarn, permits measurement of tension values of the yarn with a high degree of accuracy.
Inventors
- 👤 Takao Nakayama
- 👤 Chikayasu Yamazaki
- 👤 Michio Ohno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:17
CPC Classifications
G; G01; G01L; G01L5/00; G01L5/04; G01L5/10; G01L5/107; B; B65; B65H; B65H59/00; B65H59/40; G01N; G01N33/00; G01N33/36; G01N33/365; B65H2601/00; B65H2601/50; B65H2601/52; B65H2601/524; B65H2701/00; B65H2701/30; B65H2701/31
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
86 words
A yarn tension meter for measuring the tension of a running yarn comprising: (a) a rotary guide having a yarn guide surface fixed on a rotating shaft, said shaft being driven by a motor; (b) at least one force transducer for detection of contact pressure of the yarn on said yarn guide surface as an electrical signal; and (c) fixed guide means arranged to provide a predetermined path for the running yarn; said force transducer being disposed between said rotary guide and said fixed guide means.
Claim 2
Dependent Claim
86 words
A yarn tension meter for measuring the tension of a running yarn comprising: (a) a rotary guide having a yarn guide surface fixed on a rotating shaft, said shaft being driven by a motor; (b) at least one force transducer for detection of contact pressure of the yarn on said yarn guide surface as an electrical signal; and (c) fixed guide means arranged to provide a predetermined path for the running yarn; said force transducer being disposed between said rotary guide and said fixed guide means.
Claim 3
Dependent Claim
23 words
A yarn tension meter as claimed in claim 1, wherein said rotary guide includes a plurality of blades fixed on said rotating shaft.
Claim 4
Dependent Claim
45 words
A yarn tension meter as claimed in claim 1, wherein said rotary guide consists of a circular plate fixed on an end of said shaft and a plurality of guide pins fixed on said circular plate and extending around the rotation axis of the plate.
Claim 5
Dependent Claim
24 words
A yarn tension meter as claimed in claim 1, wherein said rotary guide is a cam having a plurality of curved yarn guide surfaces.
Claim 6
Dependent Claim
36 words
A yarn tension meter as claimed in claim 1, wherein said force transducer comprises an elastic plate, a strain gauge attached to said elastic plate, and a guide fixed to an end of said elastic plate.
Claim 7
Dependent Claim
20 words
A yarn tension meter as claimed in claim 1, wherein units of force transducers are provided in a common circuit.
References Cited (Backward Citations)
US3994162A
Cited
US4092857A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-07 | 1983-07-09 | 1984-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-07 | 1987-07-09 | 1988-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-07 | 1991-07-09 | 1992-01-08 | $7700.00 | Window Closed / Lapsed |