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US 4,671,149 AGranted
Method of perforating a texture to be sewn
AssigneeTaga Electric Co., Ltd.
InventorsKazunori Makabe, Yoshiyuki Nakamura
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Abstract
A method is disclosed for perforating materials with a metal needle whereby the method involves the utilization of an ultrasonic vibration signal being applied to the metal needle in order to vibrate the needle in an axial direction to thereby penetrate a plurality of layered materials due to the axial vibration of the metal needle.
Claims2
A method of perforating a texture to be sewn, comprising the steps of:
- applying intermittent axial vibrations from an ultrasonic vibration source to a metal needle to vibrate said metal needle in an axial direction, whereby a number of layered textures can be penetrated by the axially vibrating metal needle.
Dependencies are inferred from the claim text.