Patent ID: 9409317
Filing Date: 2016-08-09
CPC Classification: B25J,B29B,B29C,B29D,B29K

Claim Text:
1. A manufacturing method of a contact portion of a grasping apparatus, said contact portion being able to take on a form in which its shape can flexibly deform and another form in which its shape is firmly maintained, and comprising a bag body that has a bag-shaped member made of an elastic and airtight material and a connecting port, and a granular substance filled inside of the bag-shaped member, wherein the contact portion takes on the form in which its shape is firmly maintained when a volume ratio of the granular substance to the bag-shaped member is increased by reducing a pressure within the bag-shaped member; the manufacturing method comprising: a step of preparing a core for forming the bag-shaped member, by hardening the granular substance; a step of forming the bag-shaped member by forming a covering made of the elastic and airtight material around the core; and a step of breaking up the core that is inside of the bag-shaped member.