Flexofold Aps

Jack Skrydstrup

Ulrik Nielsen

The present invention discloses a folding propeller () for a boat, e.g. for a sailboat or a multihull yacht, where said folding propeller () comprises a hub () for directly or indirectly fastening at a driveshaft connected to a motor, where said folding propeller () further comprises at least three individual blades (), where each of said blades () comprises a blade root () arranged to pivot around a separate pivot pin (), at said hub () in order to be either in a first and operative position, where the blade () is pointing mainly in a radial direction, or in a second and inoperative position, where the blade () is pointing mainly in an axial direction, where said pivot pin () comprises a first and second end (), where said hub () comprises a cut out () for each of said blade roots (), and further comprises a set of holes () for installing said pivot pins ().

Folding propeller

The present invention relates to a foldable propeller () for a boat, e.g. for a sailboat or a multihull yacht, where the foldable propeller () comprises a hub () with a plurality of blades, each blade comprising a blade root arranged to pivot around a separate pivot pin in order to be either in a first operative orientation, where the blade () is pointing mainly in a radial direction, or in a second inoperative orientation, where the blade is pointing mainly in an axial direction. The hub () comprises a number of hub flanges () for holding the pivot pins (). The pivot pin () comprises at its second end () a head () with a recess () that accommodates the first end () of another of the pivot pins () inside the head ().

Foldable propeller and method for assembly

A folding propeller for a boat, e.g., for a sailboat or a multihull yacht, and a method for installing and/or adjusting such a folding propeller, where said folding propeller has a hub for directly or indirectly fastening at a driveshaft connected to a motor, where said folding propeller further has at least two individual blades, where each of said blades has a root arranged to pivot around a pivot pin at said hub to be either in a first, operative position, where the blades are pointing mainly in a radial direction, and in a second, inoperative position, where the blades are pointing mainly in an axial direction, where said hub has one or more cut outs for said blades roots and further has a first set of holes for installing said pivot pins and a second set of holes for installing a locking device for engagement with said pivot pins.

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Egtved, Denmark

Jack Skrydstrup