Title:
THREAD BREAKAGE DETECTING SNAIL WIRE FOR RING FRAME
Document Type and Number:
WIPO Patent Application WO/1981/002433
Kind Code:
A1
Abstract:
A thread breakage detecting snail wire mounted on a ring frame must sensitively detect intrinsic vibrations occurring in a yarn. Accordingly, a groove (25) is formed on a piezoelectric element mounting portion (23) of the snail wire (2) so as to be directed perpendicularly to the axial direction of the piezoelectric element mounting portion (23) and is feasible for the vibration. Further, a protected piezoelectric element (12') and a connecting lead wire (141) are retained, buried, and held with an elastic member (29), thereby stably utilizing the snail wire for long time.
Inventors:
KITAMURA Y (JP)
Application Number:
PCT/JP1981/000036
Publication Date:
September 03, 1981
Filing Date:
February 26, 1981
Export Citation:
Assignee:
KITAMURA Y
International Classes:
B65H63/032; (IPC1-7): D01H13/04; D01H13/16; B65H63/02; B65H57/08
Foreign References:
| JPS552509A | 1980-01-10 | |||
| JPS54139725U | 1979-09-28 |
Other References:
See also references of EP 0046810A4
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