4755155 Marine propulsion device oil cooling kingpin arrangement

Volume 19/Number 12/December 1988 already been drawn to specific omissions; a more general one is the lack of any detailed account of marine lipids. Conceivably the author decided not to include this topic because it has been well reviewed elsewhere. Its absence, however, means that a substantial field of biochemical endeavour has not been dealt

with. Accordingly, although the b o o k may well be of value to those whose research in the marine sciences requires them to know more of biochemistry, the coverage it provides is insufficiently comprehensive to justify the claim implied by its title.

ERIC D. S. CORNER

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4755155

MARINE PROPULSION DEVICE OIL COOLING KINGPIN ARRANGEMENT Clarence E Blanchard assigned to Outboard Marine Corporation A marine propulsion device comprising a power head having an engine, a lower unit which carries the engine, the lower unit including a rotatably mounted propeller and a drive shaft housed within the lower unit and operatively coupled to the engine and to the propeller, a swivel bracket adapted for mounting to a transom bracket for affording vertical tilting m o v e m e n t of the swivel bracket about a generally horizontal axis, the swivel bracket having a generally vertical bore, and a tubular pivot shaft connected to the lower unit and supported within the vertical bore for rotation about a generally vertical steering axis, and including therein a fluid passage adapted to communicate with a source of fluid to be cooled, and a water passage located adjacent the fluid passage and adapted to communicate with a flow of water to cool the fluid in the passage. Pre-

ferably, the lower unit includes a water inlet connected to a water entry conduit, and a water outlet connected to a water exit conduit, and the tubular pivot shaft water passage is located adjacent the fluid passage and. communicates with the lower unit water entry and exit conduits so that forward motion of the lower unit results in a flow of water through the water passage to cool the fluid in the fluid passage.

4755312

CARBONATE TREATED DISPERSANTS Robert H Wollenberg assigned to Chevron Research C o m p a n y Disclosed are additives which are useful as dispersants in marine crankcase oils and hydraulic oils, lubricating oils. In particular, disclosed are nitrogen-containing lubricating oil dispersants having at least one primary or secondary amino group which have been modified by treatment with a cyclic carbonate.

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