최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0524089 (2012-06-15) |
등록번호 | US-8353808 (2013-01-15) |
발명자 / 주소 |
|
출원인 / 주소 |
|
인용정보 | 피인용 횟수 : 11 인용 특허 : 8 |
Exercise devices for exercising the abdominal muscles and other muscle groups are disclosed. Each of the exercise devices has a housing from which opposing interconnected ends of an axle extend and a support ball that is captured within and partially extends from the housing. The housing has a cavit
1. An exercise device comprising: a support ball having a diameter in the range of from about 3 to about 5.5 inches;a housing having a partially spherical cavity for receiving the support ball, the partially spherical cavity having a surface;a plurality of bearing strips, each of the bearing strips
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