Abstract: A movable boat propulsion apparatus for use with an inboard drive comprising a drive assembly disposed within a pivotally mounted housing coupled at one end to the drive by a universal joint and coupled at the opposite end to a propeller mounted on a substantially vertical strut by a second universal joint such that the entire boat propulsion apparatus is movable in the vertical plane relative to the boat hull. The apparatus may also include a control coupled to the strut to adjust the height and angular orientation of the propeller in the vertical plane relative to the boat hull.

Abstract: A nonpickable lock device comprising a housing, a plug rotably mounted in said housing and having an axially extending keyway, tumblers, disposed for reciprocal movement within cross bores formed in said plug for blocking rotation of said plug unless a properly bitted key is inserted in the keyway, and tumbler biasing means mounted in clearance slots formed in said plug in registry with said tumblers.