초록 ▼

A propeller guard includes a rigid U-shaped sleeve which has a pair of legs extending on either side of the lower housing in the motor. The cavitation plates on the lower housing are received within a U-shaped channel formed in the sleeve for mounting the guard upon the motor. A cylindrical shield h

A propeller guard includes a rigid U-shaped sleeve which has a pair of legs extending on either side of the lower housing in the motor. The cavitation plates on the lower housing are received within a U-shaped channel formed in the sleeve for mounting the guard upon the motor. A cylindrical shield having an open inlet end and an open outlet end is secured to the sleeve and encircles the propeller to protect the propeller from contact with foreign objects. A frame member extends downwardly from the forward edge of the sleeve to the lower portion of the inlet end of the shield and engages the leading edge of the lower housing to provide structural support for the guard. A plurality of horizontally disposed ribs extend from the frame member to the shield to further protect the propeller from contact with foreign objects. A gridwork is pivotally mounted over the open outlet end of the shield to further protect the propeller from contact with foreign objects. The shield is positioned such that the longitudinal axis thereof is co-extensive with the axis of rotation of the propeller. The inlet end of the shield is coplanar with the forward end of the propeller and the inlet end of the shield extends rearwardly beyond the rearward end of the propeller.

대표청구항 ▼

In combination with a motorboat including a motor, a propeller operatively connected to said motor, a lower housing with opposite leading and trailing edges and terminating in a vertically disposed skeg, said propeller being mounted on said lower housing adjacent said trailing edge and above said sk

In combination with a motorboat including a motor, a propeller operatively connected to said motor, a lower housing with opposite leading and trailing edges and terminating in a vertically disposed skeg, said propeller being mounted on said lower housing adjacent said trailing edge and above said skeg, and a pair of horizontally disposed cavitation plates having forward and rearward ends extending laterally from said lower housing and above said propeller, a propeller guard comprising: a rigid U-shaped sleeve having a forward end and opposite rearwardly extending legs and an elongated U-shaped channel formed therin, said channel having a closed forward end and open rearward ends which extend at least to the rearward ends of said cavitation plates, said open rear ends of said channels having an effective width therebetween substantially equal to the maximum combined width of said pair of cavitation plates whereby said sleeve is adapted to slide rearwardly into position with said legs extending on each side of said lower housing and with said cavitation plates received within said channel until said forward end of said sleeve engages said leading edge of said lower housing to thereby prevent rearward movement of said guard; means for closing said open rearward ends of said channel and thereby prevent forward movement of said sleeve; and a propeller shield having open inlet and outlet ends, being attached to said sleeve for encircling said propeller and thereby protecting said propeller from contact with foreign objects, a frame member extending downwardly from the forward end of said sleeve and engaging said leading edge of said lower housing substantially along the length thereof, and a plurality of longitudinally disposed ribs extending between said frame member and said shield to further protect said propeller from contact with foreign objects.