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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0439649 (1982-11-05) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 62 인용 특허 : 1 |
A tread for surface contact with various surfaces of a human body, as feet, chest, abdomen, etc., has a base with upwardly projecting tines. A surface tread is provided in contact with, and is softer than, the tines. The relative hardness of the tines and the surface tread are designated. When the s
A surface for contact by human skin intermittently urged thereagainst, comprising a base member having spaced apart, upwardly projecting, flexible tines, each of said tines having a height a plurality of times greater than its diameter; and an upper surface member having a lesser hardness than said
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