| 摘要 |
FIELD: sport.SUBSTANCE: invention relates to sport and tourism. Round sail is manual, flat sail of round, oval or polygonal shape with rounded corners and with variable working area consists of long telescopic handle. Telescopic handle passes through centre of sail to ends of which round, oval or polygonal with rounded corners frame is attached. Frame consists of partially or completely flexible rods and covered with sailcloth.EFFECT: simple design of sails is achieved.1 cl |
