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|국가/구분||United States(US) Patent 등록|
|발명자 / 주소|
|인용정보||피인용 횟수 : 6 인용 특허 : 2|
Two sail structures are disclosed for use in propelling a movable body, such as a ski, skate, iceboat or the like, over a solid surface. One sail structure uses the lateen configuration and includes a triangular shaped sail with an upper spar and lower boom for holding the sail in an open, triangular form; as well as a mast, connectable to the spar and boom, for supporting the sail in a lateen configuration. The other sail structure includes a vertical mast and a horizontal boom connected in a “cross. ”A first right-triangular sail is connected at its th...
Lateen sail apparatus for use in propelling a body member adapted to transport a user in a standing or crouching position over a solid surface, said apparatus comprising: (a) a triangular-shaped sail; (b) means including an upper spar and a lower boom for holding said sail in an open, triangular form; (c) a mast, connectable to said spar and said boom at positions substantially midway between the respective ends thereof, for supporting said holding means in a lateen configuration such that the sail area forward of the mast is a significant proportion of,...