Synchronously driven, multiple cable boat lift

A synchronously driven, multiple cable boat lift for use in combination with proximal and distal support structures located on respective first and second sides of a boat to selectively lift and lower the boat out of and into a body of water between the support structures, said boat lift comprising:

• a single motor mountable on the proximal support structure, for operating selectively in opposing first and second directions;
• a boat accommodating platform locatable between the proximal and distal support structures and extendable beneath the boat, said platform having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• and
• means operably interconnecting said motor and said platform for synchronously raising said proximal and distal portions of said platform when said motor is driven in said first direction and lowering said proximal and distal portions of said platform when said motor is driven in said second direction, whereby the boat supported on said platform is raised and lowered respectively;
• said means for raising and lowering including at least one proximal cable operably connected to said proximal portion of said platform and a pair of distal cables, each of which is operably connected to said distal portion of said platform for enabling raising and lowering thereof, said distal cables being arranged to extend transversely across said platform non parallel to each other.

A single motor, synchronously driven boat lift comprising:

• a proximal support structure locatable on a first side of the boat to be lifted;
• a distal support structure locatable on an opposite second side of the boat;
• a single motor mounted on said proximal support structure and being selectively driven in opposing first and second directions;
• a boat accommodating platform located between said proximal and distal support structures and including an elongate pair of interconnected cradle beams for extending across and beneath the boat from the first side to the second side of the boat, each said beam having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• a pair of proximal cables, each of which is operably connected to said proximal portion of a respective beam for enabling raising and lowering thereof and a pair of distal cables, each of which is operably connected to said distal portion of a respective said beam for enabling raising and lowering thereof;
• a rotatable winder assembly having a pair of relatively large diameter winder drums operably connected to respective distal cables and a second pair of relatively small diameter winder drums operably connected to respective proximal cables;
• and
• a reduction mechanism operably interconnecting said motor and said winder assembly such that operation of said motor in a first direction drives said winder assembly to synchronously raise said proximal and distal portions of said beams and operating said motor in a second direction drives said winder assembly to synchronously lower said proximal and distal portions of said beams, whereby said platform is raised and lowered, respectively.

A single motor, synchronously driven boat lift for use in combination with proximal and distal support structures located respectively on first and second sides of a boat to selectively lift and lower the boat out of and into a body of water between the support structures, said boat lift comprising:

• a single motor mountable on the proximal support structure and being selectively driven in opposing first and second directions;
• a boat accommodating platform locatable between the proximal and distal support structures and including an elongate pair of interconnected cradle beams for extending across and beneath the boat from the first side to the second side of the boat, each said beam having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• a pair of proximal cables, each of which is operably connected to said proximal portion of a respective beam for enabling raising and lowering thereof and a pair of distal cables, each of which is operably connected to said distal portion of a respective said beam for enabling raising and lowering thereof;
• a rotatable winder assembly having a pair of relatively large diameter winder drums operably connected to respective distal cables and a second pair of relatively small diameter winder drums operably connected to respective proximal cables;
• and
• a reduction mechanism operably interconnecting said motor and said winder assembly such that operation of said motor in a first direction drives said winder assembly to synchronously raise said proximal and distal portions of said beams and operating said motor in a second direction drives said winder assembly to synchronously lower said proximal and distal portions of said beams, whereby said platform is raised and lowered, respectively.

A synchronously driven boat lift comprising:

• a proximal support structure locatable on a first side of the boat to be lifted;
• a distal support structure locatable on an opposite second side of the boat;
• a motor mounted on said proximal support structure and being selectively driven in opposing first and second directions;
• a boat accommodating platform located between said proximal and distal support structures and including an elongate pair of interconnected cradle beams for extending divergently relative to one another across and beneath the boat from the first side to the second side of the boat, each said beam having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• a pair of proximal cables, each of which is operably connected to said proximal portion of a respective said beam for enabling raising and lowering thereof and a pair of distal cables, each of which is operably connected to said distal portion of a respective said beam for enabling raising and lowering thereof;
• a winder assembly upon which said proximal and distal cables are wound;
• and
• a reduction mechanism operably interconnecting said motor and said winder assembly such that operation of said motor in a first direction synchronously raises said proximal and distal portions of said beams and operation of said motor in an opposite second direction synchronously lowers said proximal and distal portions of said beams, whereby said platform is raised and lowered, respectively.

A synchronously driven boat lift comprising:

• a proximal support structure including a single support piling locatable on a first side of the boat to be lifted;
• a distal support structure including a pair of distinct, spaced apart support pilings locatable on an opposite second side of the boat, said single support piling of said proximal support structure positioned longitudinally intermediate said spaced apart pilings of said distal support structure such that said support pilings define respective vertices in a triangular configuration;
• a motor mounted on said proximal support structure and being selectively driven in opposing first and second directions;
• a boat accommodating platform located between said proximal and distal support structures and including an elongate pair of interconnected cradle beams for extending across and beneath the boat from the first side to the second side of the boat, each said beam having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• a pair of proximal cables, each of which is operably connected to said proximal portion of a respective said beam for enabling raising and lowering thereof and a pair of distal cables, each of which is operably connected to said distal portion of a respective said beam for enabling raising and lowering thereof;
• a winder assembly upon which said proximal and distal cables are wound;
• and
• a reduction mechanism operably interconnecting said motor and said winder assembly such that operation of said motor in a first direction synchronously raises said proximal and distal portions of said beams and operation of said motor in an opposite second direction synchronously lowers said proximal and distal portions of said beams, whereby said platform is raised and lowered, respectively.

A synchronously driven boat lift comprising:

• a proximal support structure locatable on a first side of the boat to be lifted;
• a distal support structure locatable on an opposite second side of the boat;
• one of said proximal and distal support structures including a single support component and the other of said proximal and distal support structures including a distinct, spaced apart pair of support components, said single support component positioned longitudinally intermediate said spaced apart support components such that said support components define respective vertices in a triangular configuration;
• a motor assembly mounted on at least one of said support structures and being selectively driven in opposing first and second directions;
• a boat accommodating platform located between said proximal and distal support structures and extending across and beneath the boat from the first side to the second side of the boat, said platform having a proximal portion and a distal portion positionable respectively on the first and second sides of the boat;
• a plurality of lifting cables for suspending said platform from said support structures and enabling raising and lowering of said platform relative to said support structures;
• a winder assembly upon which said cables are wound;
• and
• a reduction mechanism operably interconnecting said motor assembly and said winder assembly such that operation of said motor assembly in a first direction synchronously raises said proximal and distal portions of said platform and operation of said motor assembly in an opposite second direction synchronously lowers said proximal and distal portions of said platform, whereby said platform is raised and lowered, respectively.