A swing arm restraint system for an automotive lift includes a movable carriage including a swing arm mounting portion. A first swing arm restraint housing is non-rotatably connected to the swing arm mounting portion, the first swing arm restraint housing including a first internal space. A first swing arm is pivotally connected to the swing arm mounting portion and is rotatable relative to the first swing arm restraint housing. A first restraint device is located in the first internal space and connected to the the swing arm restraint housing. A second restraint device is operably connected to the first swing arm such that the second restraint device rotates with the first swing arm relative to the first swing arm restraint housing. The first and second restraint devices are configured to be selectively arranged in either one of: (i) a locked position where the first and second restraint devices are non-rotatably coupled such that said first swing arm and said second restraint device are non-rotatably coupled to said first swing arm restraint housing; (ii) an unlocked position where the first and second restraint devices are decoupled with respect to each other such that said first swing arm and said second restraint device are rotatable relative to said first swing arm restraint housing.

Disclosed is an active compensation system, intended to compensate at least partially for the effect of an undulating movement on a load, advantageously in a vertical direction, preferably for the active compensation of the swell. The active compensation system includes: — an electrical supply electrically connected to electrical storage unit; — electrical energy dissipating unit; and - a controller for discharging the electrical storage unit during a first phase of the undulating movement, to participate in the electrical supply of the electrical motor in addition to the power supply, and to recharge the electrical storage via the electrical supply during a second phase of the undulating movement.

A pantograph-type lifting system comprises a base; a platform connected to the base by a pair of levers each comprising a first lever and a second lever mutually hinged in a fulcrum, the first lever having a lower end hinged to the base, and an upper end sliding connected to the platform, the second lever having a lower end sliding connected to the base, and an upper end hinged to the platform in a fixed spot; a chain-type actuating system of the levers comprising one chain meshed with a first toothed pulley and with a second toothed pulley rotatable connected to the respective levers, the chain-type actuating system being configured to transfer the motion from motor means to the levers through the toothed pulleys in order to approach or move away the ends of the levers with a scissors-like movement to lift or lower the platform.

A pantograph-type lifting system comprises a base; a platform connected to the base by a pair of levers each comprising a first lever and a second lever mutually hinged in a fulcrum, the first lever having a lower end hinged to the base, and an upper end sliding connected to the platform, the second lever having a lower end sliding connected to the base, and an upper end hinged to the platform in a fixed spot; a chain-type actuating system of the levers comprising one chain meshed with a first toothed pulley and with a second toothed pulley rotatable connected to the respective levers, the chain-type actuating system being configured to transfer the motion from motor means to the levers through the toothed pulleys in order to approach or move away the ends of the levers with a scissors-like movement to lift or lower the platform.

A safety latch system includes a mount, a pawl member, a ratchet member, and a release assembly. The mount is mountable on a housing of a piston. The pawl member is coupled to the mount. The pawl member includes a pawl. The ratchet member has a first sidewall that includes a first connecting portion that is connectable to an end portion of a piston rod of the piston. The first sidewall includes a teeth portion, which is configured to engage with the pawl. The release assembly is configured to provide an engaged state between the pawl member and the ratchet member. The release assembly is also configured to provide a disengaged state between the pawl member and the ratchet member. When in the engaged state, the pawl member is engaged with the ratchet member such that the safety latch system is configured to provide (i) an unlocked state in which the ratchet member is movable relative to the pawl member as the piston rod advances outward from the housing and (ii) a locked state in which the pawl member is configured to lock into a depression between adjacent teeth of the ratchet member to stop the piston rod from moving towards the housing. When in the disengaged state, the pawl member is disengaged from the ratchet member to permit the piston rod to advance outward from the housing and permit the piston rod to retract towards the housing.

A vehicle support assembly mountable to a runway vehicle lift having a frame with a plurality of vertically oriented spaced apart support, a rack having a plurality of portions, wherein each portion is movably coupled to a different vertically oriented support, a runway vehicle support supported on the rack, a lift actuator coupled to the rack to move the rack and the runway vehicle support up and down. The vehicle support assembly comprising: a pair of carriage assemblies, each carriage assembly having an arm carriage and a two movable arms, each arm having a first end coupled to the arm carriage and a second end configured to engage an undercarriage of a vehicle; and a pair of posts wherein each post supports a carriage assembly, each post being movably coupled to the runway vehicle lift with a mount to move the post to and from a first position wherein the post is arranged vertically with the arms extended to support the vehicle above the runway vehicle support and a second storage position wherein the post is displaced from the first position.

A vehicle support assembly mountable to a runway vehicle lift having a frame with a plurality of vertically oriented spaced apart support, a rack having a plurality of portions, wherein each portion is movably coupled to a different vertically oriented support, a runway vehicle support supported on the rack, a lift actuator coupled to the rack to move the rack and the runway vehicle support up and down. The vehicle support assembly comprising: a pair of carriage assemblies, each carriage assembly having an arm carriage and a two movable arms, each arm having a first end coupled to the arm carriage and a second end configured to engage an undercarriage of a vehicle; and a pair of posts wherein each post supports a carriage assembly, each post being movably coupled to the runway vehicle lift with a mount to move the post to and from a first position wherein the post is arranged vertically with the arms extended to support the vehicle above the runway vehicle support and a second storage position wherein the post is displaced from the first position.

A lifting device for lifting various vessels includes a two-speed boat lift transmission enables a boat lift to operate at two speeds, i.e. a high speed when the lift is empty or when lowering a boat, and a low speed when lifting the boat. The worm gear drive acts as a speed reducer and it provides locking, so the boat lift cannot back drive. The novel idea of incorporating a harmonic drive differential transmission into the gearbox assembly allows the use of two inputs and ratios, enabling both high speed and low speed operation.

A lifting device for lifting various vessels includes a two-speed boat lift transmission enables a boat lift to operate at two speeds, i.e. a high speed when the lift is empty or when lowering a boat, and a low speed when lifting the boat. The worm gear drive acts as a speed reducer and it provides locking, so the boat lift cannot back drive. The novel idea of incorporating a harmonic drive differential transmission into the gearbox assembly allows the use of two inputs and ratios, enabling both high speed and low speed operation.

A vehicle lift system includes a vehicle lift operable to lift a vehicle to be serviced by a technician. The vehicle lift includes lifting components for engaging and lifting the vehicle at liftable structures of the vehicle. Electrodes are positioned on the lifting components of the vehicle lift. The electrodes are operable to make electrical contact with the liftable structures of the vehicle when the lifting components engage the liftable structures. A voltage detector system is in electrical communication with the electrodes. The voltage detector system is operable to detect voltages at the electrodes capable of harming the technician. The voltage detector system is also operable to send a warning signal to the technician indicating that a harmful voltage has been detected on the electrodes when the electrodes make electrical contact with the liftable structures of the vehicle.