INFLATABLE BOAT AND METHOD OF ITS MANUFACTURE Russian patent published in 1995 - IPC

FIELD: ship building. SUBSTANCE: inflatable boat has two symmetrical boards with filler valves interconnected to form buoyancy chamber. Boat has also banks and flexible bottom sectional in length and made up of three interconnected members. Cross edges of bottom members are made at acute angle relative to boat longitudinal axis, their longitudinal dimensions in length of bottom being made with ratios: 0.5:1.0:0.5. Machining of middle blanks in board length is carried out with interruption of their contours and with forming of pairs of longitudinal interpart processing bridges in between. Glue coating is applied from back side, then board pieces are folded in two, relative to longitudinal axis, cross seams are coated with glue from face side and glue is applied to longitudinal edges of two-layer board pieces; then piece longitudinal edges are connected by longitudinal seams to form boards closed over perimeter, and tapes are applied to board cross seams, then longitudinal seams of boards, sections of attachment of inserts and ends of tapes secured on interpart bridges are coated with glue. After drying, the ends of tapes are disconnected from interpart bridges, the latter are cut off, and ends of tapes are fastened on ends of longitudinal seams. Then sealing tapes are applied to ends of tapes and to longitudinal seams, inserts are fastened on boards and seams are rolled down. EFFECT: enhanced quality of product. 2 cl, 21 dwg