Abstract: Disclosed herein is a foldable propeller assembly adapted for connection to a drive shaft. The propeller assembly includes a propeller carrier having an open end portion defining an axially extending mounting socket for receiving the drive shaft and a hub end portion spaced from the open end portion. A pair of propeller blades are pivotally mounted on the hub end portion for movement from a folded-together, collapsed position to a radially outwardly extending operative position in response to rotation of the propeller carrier and for movement from the operative position to the collapsed position in response to cessation of rotation of the propeller carrier.

Abstract: Disclosed herein is a marine propulsion device including a drive shaft housing mounted for vertical swinging movement about a horizontal axis relative to a boat, a propeller shaft rotatably mounted in the drive shaft housing and having an axis of rotation, and a propeller carried by the propeller shaft. The marine propulsion device also includes a first bevel gear mounted in the drive shaft housing and in coaxial relation to the propeller shaft, a second bevel gear mounted in the drive shaft housing and in coaxial relation to the propeller shaft, and a clutch mechanism for selectively drivingly connecting the bevel gears to the propeller shaft. The marine propulsion device also includes an annular thrust flange extending from the propeller shaft and for transmitting axial thrust from the propeller shaft to the drive shaft housing.

Abstract: Disclosed herein is a foldable propeller assembly adapted for connection to a drive shaft. The propeller assembly includes a propeller carrier having an open end portion defining an axially extending mounting socket for receiving the drive shaft and a hub end portion spaced from the open end portion. A pair of propeller blades are pivotally mounted on the hub end portion for movement from a folded-together, collapsed position to a radially outwardly extending operative position in response to rotation of the propeller carrier and for movement from the operative position to the collapsed position in response to cessation of rotation of the propeller carrier.

Abstract: Disclosed herein is an outboard motor including a lower unit comprising a propeller adapted for rotation under water, and a swivel bracket adapted for mounting to a transom bracket for vertical tilting movement about a generally horizontal axis. A kingpin assembly including a pivot shaft is supported by the swivel bracket for rotation about a generally vertical axis, the pivot shaft having fixed thereto a pinion and means for supporting the lower unit. A rack is located below the generally horizontal axis and engages the pinion. The rack is supported by the swivel bracket to afford generally horizontal movement of the rack, which horizontal movement effects rotation of the pivot shaft and the lower unit about the vertical axis. Hydraulically activated plunger mechanisms connected to the rack are provided for effecting horizontal movement of the rack and thereby affording control of the rotation of the lower unit about the vertical axis.

Abstract: Disclosed herein is a marine propulsion installation comprising a boat hull including a bottom surface having therein an aperture, a mounting collar having a lower portion which extends through the aperture and which includes an upper end and a flange extending generally horizontally outwardly from the upper end of the lower portion, a seal sealing the boat hull bottom to the lower portion of the collar, a rigidifying structure extending between the boat hull bottom and the flange of the collar, a mounting bracket having a first portion fixed to the flange and an inner portion, an endless mount of resilient material including an outer surface having therein a recess receiving the inner portion of the mounting bracket, which mount also includes upper and lower surfaces spaced respectively above and below the recess and, a marine propulsion device including an adaptor including a lower end having a downwardly facing surface engaging the upper surface of the mount, and a lower unit including a lower portion exte

Abstract: Disclosed herein is a marine propulsion device comprising a mounting plate adapted to be secured to the bottom of a boat hull in watertight relation and having therein an endless surface defining an opening, and a margin extending from the endless surface, a resilient member comprising an annular sealing portion including an endless surface defining a central opening and a plurality of angularly spaced extensions which project outwardly from the annular sealing portion and constitute elastomeric mounts, a clamping member including an annular portion located within the central opening of the resilient member and defining a central opening, and a flange portion extending outwardly from the annular portion, a lower unit extending through the opening in the clamping member and including a mounting flange, and means securing the clamping member to the mounting flange with the annular sealing portion of the resilient member located between the mounting plate and at least one of the lower unit mounting flange and th

Abstract: Disclosed herein is a marine propulsion device comprising an engine including a bottom face with an exhaust gas passage port, together with a lower unit connected to the bottom face and including a side surface, and an exhaust gas passage communicating with the engine port and terminating in a port in the side surface, and an exhaust gas passage conduit connected to the lower unit in communication with the port in the side surface and extending upwardly therefrom to above the power head and thence downwardly. The engine includes a cooling jacket, and the lower unit has a substantially closed cavity including a gear box portion and a sleeve portion, together with a water jacket cavity surrounding the sleeve portion, and water inlet means communicating with the water jacket cavity.