|국가/구분||United States(US) Patent 등록|
|§371/§102 date||20090916 (20090916)|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 1 인용 특허 : 5|
The present invention provides a device for safely and conveniently conveying an object on a slope. The safety feature includes a fail-safe one-way brake comprising a ratchet wheel, a pawl and a biasing means. In one embodiment, the device is foldable; in another embodiment, the device is integrated with a suitcase; in yet another embodiment, the device is motorized.
The invention claimed is: 1. A device for conveying an object on a surface, the device comprising:a support having a open chamber facing the surface;a climbing module housed in the chamber, the module comprising:a pair of pulleys operable to rotate about parallel axes;a belt circumscribing the pair of pulleys and operable to turn in cooperation with the pair of pulleys in a first direction or in a second direction opposite to the first direction;a one-way brake for engaging with one of the pulleys and preventing the belt from turning in the first directi...