Patent ID: 11873843
Assignee: KASCO MARINE, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  B | IPC F

Claim 7:
8. An axial flow propeller guard, comprising:
a center hub having a first end, a second end, and an outer surface extending from the first end to the second end;
the center hub extends longitudinally from the first end to the second end;
a plurality of fixed guide vanes extending radially from the center hub, each fixed guide vane having a radially inner end attached to the outer surface of the center hub, a radially outward facing edge spaced a distance from the center hub, a top edge, a bottom, a first side surface and a second side surface;
each vane includes a tip section defined between a portion of the top edge thereof and a portion of the radially outward facing edge thereof, and each one of the tip sections is tapered between the portion of the top edge thereof and the portion of the radially outward facing edge thereof;
the top edge includes a portion that curves downwardly from the radially inner end and the portion that curves downwardly transitions into a portion that curves upwardly;
the vanes are circumferentially spaced from each other about the center hub;
a base plate fixed to the second end of the center hub;
the bottom of each vane is attached to the base plate;
for each vane, a longitudinal length at the radially outward facing edge is greater than a longitudinal length at the radially inner end.