Boat lift

A boat lift comprising:

• a rigid support structure anchored on land adjacent to a body of water, the support structure including a horizontal portion disposed over the land;
• a base mounted on the horizontal portion of the support structure, a frame structure for moving a boat between raised and lowered positions including:
• a swinging frame including a pair of parallel, spaced-apart base arms, each base arm including an inner end mounted to the base by a first swinging coupling enabling an outer end of each base arm to swing upwardly and inwardly, or downwardly and outwardly, depending upon a direction of swinging movement of the swinging frame,
• a boat-supporting frame including a pair of parallel, spaced-apart support arms, each support arm including a proximate end mounted directly to an outer end of a respective base arm by a second swinging coupling, the support arms including respective remote portions arranged for supporting an underside of a boat,
• a stabilizing structure connected to the boat supporting frame for maintaining the remote portions in a horizontal state during up-and-down movement of the boat supporting frame;
• and
• an actuator operably connected to the frame structure for causing the swinging frame to swing relative to the base about the first swinging coupling, wherein the boat supporting frame moves upwardly and inwardly toward the base to a boat-storage position when the swinging frame swings in one direction, and wherein the boat-supporting frame moves downwardly and outwardly to a boat-launch position when the swinging frame swings in an opposite direction, and wherein the first and second swinging couplings are disposed in vertically overlying relationship to the horizontal portion of the support structure when the boat-supporting frame is in its boat-storage position.

A boat lift assembly comprising:

• a seawall disposed on land and extending along a body of water, the seawall including:
• an upright portion and a cap disposed on the top of the upright portion, and
• a horizontal platform disposed on the land, with a front portion of the platform underlying a rear portion of the cap;
• a base mounted on the horizontal platform;
• a frame structure for raising a boat from the water and lowering a boat into the water, the frame structure including:
• a swinging frame having inner and outer ends, the inner end swingably attached to the base by a first swinging coupling, and
• a boat-supporting frame having proximate and remote ends, the proximate end swingably attached to the swinging frame adjacent the outer end thereof, a section of the boat-supporting frame disposed adjacent the remote end thereof defining a boat supporting structure arranged to support an underside of a boat;
• and
• an actuator operably connected to the frame structure for causing the swinging frame to swing relative to the base about the first swinging coupling, wherein the boat supporting frame moves upwardly and inwardly toward the base to a boat-storage position when the swinging frame swings in one direction, and wherein the boat-supporting frame moves downwardly and outwardly away from the base to a boat-launch position when the swinging frame swings in an opposite direction, wherein the boat-supporting structure remains in a substantially horizontal state during up-and-down movement of the boat supporting frame.