| 摘要 |
A four component part adjustable needle punch is presented with each part in threaded interrelationship. A hollow needle is embedded in a plastic needle housing seated within a guide housing. A cylindrical interior housing is threaded at its front end to the needle housing and thereby controls adjustment of the needle length. A cylindrical exterior housing is threaded at its front end to the guide housing and is used to prevent movement of the needle housing when fully seated.
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