Fluid reaction surfaces (i.e. – impellers) – Combined or convertible – Hub lubrication or seal
Patent
1978-07-10
1980-12-02
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
Combined or convertible
Hub lubrication or seal
416 93A, 416134R, B63H 126
Patent
active
042368723
ABSTRACT:
Disclosed herein is a marine propulsion device comprising a lower unit including a gear case having a hollow interior and having at the rearward end thereof an inwardly extending inner circular surface defining an opening through which exhaust gases and engine cooling water are discharged from the lower unit, and a propeller shaft rotatably journaled in the gear case and including a portion extending rearwardly of the gear case. A propeller including a hub is mounted on the propeller shaft rearward portion for common rotation of the hub with the propeller shaft. The propeller also includes a forward portion adjacent the rearward end of the gear case, and a propeller blade extending radially outwardly from the hub. A thrust washer is carried by the propeller shaft in forward thrust transmitting engagement therewith and in forward thrust receiving engagement with the hub, and a sleeve is supported by the thrust washer and extends into an area adjacent the inner circular surface of the gear case, the sleeve having a cutting surface closely adjacent the forward portion of the propeller for cutting fish lines and weeds therebetween.
REFERENCES:
patent: 1390397 (1921-09-01), Svenson
patent: 1813540 (1931-07-01), Laska
patent: 2143693 (1939-01-01), Harris
patent: 3371720 (1968-03-01), Blanchard
patent: 3563670 (1971-02-01), Knuth
patent: 3619083 (1971-11-01), Witte
patent: 3871324 (1975-03-01), Snyder
patent: 4080099 (1978-03-01), Snyder
Outboard Marine Corporation
Powell Jr. Everette A.
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