Abstract: The present invention discloses a sheet winding structure to reduce indentation transfer occurring because of sheet thickness or adhesive colloidality of the innermost layer of the sheet. The sheet winding structure comprises: a winding core having an outer surface, wherein the outer surface of the winding core comprises a recess thereon; and a sheet winded over the outer surface of the winding core, wherein a beginning portion of the sheet is disposed in the recess.

Abstract: A spool for a fishing reel is disclosed to include an axle, which has a surface and a recess curved inwards from the surface, two sidewalls radially extending from the two distal ends of the axle, and a pin, which is disposed in the recess with the topmost edge thereof kept in flush with the surface of the axle for the fastening of a fishing line for allowing the spool to take up or let off the fishing line smoothly.

Abstract: A storage device for a long vacuum hose such as used for cleaning a pool has a frustoconcial member mounted on a reel rotatably supported on a frame. The frustoconical member frictionally fits and secures the end of the vacuum hose to enable the winding of the hose on the reel.

Abstract: A bi-fold door is equipped with door lifting devices operated with an electric motor drive to selectively open and close the door. The door lifting devices have winches operable to wind and unwind elongated webs connected at one end to rotatable members of the winches and anchored at the opposite end to the door. Anchors mounted on the door have adjustable sleeves operable to adjust the working lengths of the webs.

Abstract: A method of producing a spiral wound gasket for sealing fluid such as a liquid including water and oil, and a gaseous body including vapor and gas and a device for producing the spiral wound gasket. The tip portion of a hoop material is cut and raised thereby forming a checking stepped-portion. The checking stepped-portion is caught by a checking pawl, so as to wind the hoop material around a core drum. After winding the hoop material around the outer periphery of the core drum, at least once, the checking pawl is retracted from the outer periphery of the core drum, thereby separating the checking pawl from the checking stepped-portion. The spiral wound gasket produced by the present invention exhibits an excellent sealing property. Moreover, it also has an excellent durability.