Title:
WEFT YARN FEELER DEVICE FOR LOOM
Document Type and Number:
Japanese Patent JP3021827
Kind Code:
B2
Abstract:
PURPOSE: To prevent an output signal (St) from being outputted in mistake even if a noise signal composed of successive pulses is superimposed on feeler signals (Sf) and (Sf1).
CONSTITUTION: A waveform shaping circuit 12 and a timer circuit 20 are connected to the output side of a feeler 11 to provide an output signal (St). The timer circuit 20 is reset for each disappearance or issuance of a feeler signal (Sf1) to measure the time width of the feeler signal (Sf1). Thereby, the output signal (St) can be outputted corresponding to only a yarn signal having a time width of a prescribed time or above among noise signals and the yarn signal contained in the feeler signal (Sf1).
Inventors:
Akio Fujii
Application Number:
JP22795391A
Publication Date:
March 15, 2000
Filing Date:
September 09, 1991
Export Citation:
Assignee:
Tsudakoma Industry Co., Ltd.
International Classes:
D03D51/34; (IPC1-7): D03D51/34
Domestic Patent References:
| JP57154440A | ||||
| JP6063587U | ||||
| JP6342184U | ||||
| JP62198286U | ||||
| JP3621124B1 |
Attorney, Agent or Firm:
Tadaaki Matsuda