Marine propulsion – Screw propeller – With means effecting or facilitating movement of propulsion...
Patent
1982-03-29
1986-07-01
Basinger, Sherman D.
Marine propulsion
Screw propeller
With means effecting or facilitating movement of propulsion...
114284, 114286, 440 65, 440 71, B63H 2126
Patent
active
045977429
ABSTRACT:
An improved trimming arrangement is disclosed which is particularly suited for use with a craft having planing hull with a marine drive. In one embodiment, the trimming arrangement includes a submerged trim hydrofoil which is affixed to the drive housing of the drive system beneath the screw propeller drive shaft. So that the efficiency of the planing hull and drive system are improved at hull-planing speeds, the trim hydrofoil is positioned to create a downward force component of the stern of the planing hull during forward movement through the water. The bow of the hull is thereby urged upwardly, thus minimizing the wetted area of the hull and improving its efficiency. In a further embodiment, the trimming arrangement includes a selectively adjustable submerged hydrofoil pivotably mounted to the transom of the planing hull which is operable to provide the desired downward force component on the stern of the hull. In a yet another embodiment, the trimming arrangement is provided by a modification of adjustable trim plates frequently used on planning hulls, so that the desired operational characteristics of the present invention are achieved with minimal expense and modification of the craft.
REFERENCES:
patent: 1538802 (1925-05-01), Harley
patent: 2076603 (1937-04-01), Svendsen
patent: 2415183 (1947-02-01), Law
patent: 2832304 (1958-04-01), Elyosius et al.
patent: 2961988 (1960-11-01), Wood
patent: 2967503 (1961-01-01), Unger
patent: 3104642 (1963-09-01), Piazza
patent: 3342155 (1967-09-01), Hook
patent: 3399643 (1968-09-01), Bennett
patent: 3698343 (1972-10-01), Boome
patent: 3933116 (1976-01-01), Adams et al.
patent: 4193366 (1980-03-01), Salminen
LandOfFree
Trimming arrangement for planing hulls does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Trimming arrangement for planing hulls, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Trimming arrangement for planing hulls will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1080095