[특허]Wheelchair cushion utilizing foams of different stiffnesses

Wheelchair cushion utilizing foams of different stiffnesses 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A47C-027/15 A47C-007/02
출원번호	US-0001381 (1993-01-06)
발명자 / 주소	Siekman Allen R. (Amherst OH) Nachod III Julius E. (Lakewood OH)
출원인 / 주소	Invacare Corporation (Elyria OH 02)
인용정보	피인용 횟수 : 47 인용 특허 : 0

초록 ▼

A polyurethane foam wheelchair cushion comprises first, second, third and fourth elements. The first element extends across the front portion of the cushion and is made of a relatively stiff foam. The second element is centered near the back portion of the cushion and is made of a foam with a lower stiffness than the first element. Third and fourth elements are on either side of the second element and are made of a foam having an intermediate stiffness between the first element and the second element. Transition surfaces between the second and third and fourth elements are angled relative to a vertical plane. Such an angled transition surface provides a gradual change in stiffness in the vertical direction between materials of different stiffnesses. The top surface of the first element is oriented relative to the second element so that the user\s ischial tuberosities will be located approximately 1.5 inches lower than the back surface of the user\s thighs when the user is sitting in the wheelchair cushion.

대표청구항 ▼

A wheelchair cushion comprising: a first element, said first element having a first stiffness, said first element having top, front, rear, and side surfaces; a second element, said second element having a second stiffness, said second element having top, front, rear, and right and left side surfaces, said front surface of said second element contiguous to said rear surface of said first element; a third element having top, front, rear, and right and left side surfaces, said right side surface of said second element being contiguous to said left side surface of said third element, said right side surface of said second element and said left side surface of said third element making an angle between 10 degrees and 80 degrees with a vertical central plane; and, a fourth element having top, front, rear, and right and left side surfaces, said left side surface of said second element being contiguous with said right side surface of said fourth element, said left side surface of said second element and said right side surface of said fourth element making an angle between 10 degrees and 80 degrees with said vertical central plane.

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Schaffner Walter E. ; Mulhern James P. ; Antonishak Stephen J., Mid-wheel drive power wheelchair.
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Schaffner Walter E. ; Mulhern James P. ; Antonishak Stephen J., Mid-wheel drive power wheelchair.
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Schaffner, Walter E.; Mulhern, James P.; Antonishak, Stephen J., Mid-wheel drive power wheelchair.
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Maier Edmund K. ; Raburn Richard W., Multi-section positioning wheelchair cushion.
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Romano,James J.; Soltani,Sohrab; Bolden,Michael V., Patient support.
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Romano, James J.; Soltani, Sohrab; Bolden, Michael V., Patient support surface.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Wheelchair cushion utilizing foams of different stiffnesses 원문보기

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연합인증

Wheelchair cushion utilizing foams of different stiffnesses 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (47)

관련 콘텐츠

특허 원문 보기

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