검색연산자 | 기능 | 검색시 예 |
---|---|---|
() | 우선순위가 가장 높은 연산자 | 예1) (나노 (기계 | machine)) |
공백 | 두 개의 검색어(식)을 모두 포함하고 있는 문서 검색 | 예1) (나노 기계) 예2) 나노 장영실 |
| | 두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색 | 예1) (줄기세포 | 면역) 예2) 줄기세포 | 장영실 |
! | NOT 이후에 있는 검색어가 포함된 문서는 제외 | 예1) (황금 !백금) 예2) !image |
* | 검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색 | 예) semi* |
"" | 따옴표 내의 구문과 완전히 일치하는 문서만 검색 | 예) "Transform and Quantization" |
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) | B62M-001/00 A63C-001/00 |
미국특허분류(USC) | 28/008.7042 ; 28/001.127 |
출원번호 | US-0008082 (1998-01-16) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 16 인용 특허 : 4 |
The Inherently Stable Riding Platform is a platform supported by a suspension system including a pair of two wheeled caster action bogies, the rear bogie mounted to the platform by two ball-joints forming a single axis pivotal discipline and the front bogie mounted to the platform by five ball-joints; four joints arranged in pairs to form two separate elongated restraining linkages and a single supporting ball-joint; the five together forming a multi-axis pivotal discipline. The whole arrangement is inherently stable and steerable by positionings of the ...
[ I claim:] [1.] A riding platform comprising:a board with projecting nose and tail sections for supporting a rider,a rear bogie mounted under said tail section of said board, said rear bogie having a pair of rear wheels attached by a pair of rear legs diverging and extending downwardly and rearwardly from a first support unit, said first support unit having a top side which is mounted to said tail section by means of a first ball-joint, located on a rear portion of said first support unit, and a second ball-joint, located on a front portion of said firs...