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" |
국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) | B65B-067/04 |
미국특허분류(USC) | 248/95 ; 403/223 |
출원번호 | US-0148367 (1988-01-20) |
발명자 / 주소 | |
인용정보 | 피인용 횟수 : 24 인용 특허 : 8 |
A portable, collapsible lawn and leaf bag cart is disclosed which includes a U-shaped back frame, wheels attached to and extending behind the back frame and a bag supporting platform pivotally connected to a lower end portion of the back frame which is tiltable upwardly from an extended position perpendicular to the back frame to a storage position in line with the back frame. The cart also includes a pair of arms pivotally connected on an upper end portion of the back frame for supporting a rectangularly shaped bag supporting frame thereon, which arms a...
A bag frame for maintaining the mouth of a lawn bag in a wide open position comprising a series of at least three elongated and relatively rigid tubular shaped elements, a series of at least three resilient flexible, tubular shaped sections connected between adjacent end portions of said elements, and an elongated flexible, resilient tubular shaped plug disposed in a central portion of each of said sections, each said plug being capable of resiliently bending with said sections through an angle greater than the angle between said adjacent end portions wh...