Marine propulsion device with screened water inlet

Details Marine propulsion device with screened water inlet Marine propulsion device with screened water inlet

1988-04-20

1989-08-29

Basinger, Sherman D.

Marine propulsion

Screw propeller

Propulsion unit casing

440 88, B53H 2126

Patent

active

048612936

ABSTRACT:
Disclosed herein is a marine propulsion device comprising a lower unit including a gear case rotatably supporting a propeller shaft adapted to support a propeller, which gear case includes an interior passage leading to a water pump, which gear case also includes a leading edge and opposite side surfaces having outwardly convex configurations extending rearwardly from the leading edge, one of the side surfaces including a cooling water inlet comprising an opening located in the one side surface, communicating with the interior passage, and defined by forward and rearward walls, a recess located in the one side surface forwardly of the opening and having a rearward end located at the forward wall of the opening and a forward end, which recess increases in lateral depth from the forward end to the rearward end, and a screen located in the opening and including an inclined portion extending outwardly and rearwardly from the forward wall of the opening, and a side portion extending rearwardly from the inclined portion to the rearward wall of the opening, which screen also includes a series of horizontal parallel slots located in the inclined and side portions and affording inflow of cooling water to the passage.

REFERENCES:
patent: 1762957 (1930-06-01), Buehner
patent: 2507034 (1950-05-01), Martin
patent: 2616386 (1952-11-01), Kiekhaefer
patent: 2847967 (1958-08-01), Kiekhaefer
patent: 3181495 (1965-05-01), Kiekhaefer
patent: 4033282 (1977-07-01), Pichl
patent: 4636175 (1987-01-01), Frazzell
patent: 4752257 (1988-06-01), Karls et al.

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