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a technology for lifting boats and boats, applied in waterborne vessels, slipways, shipping equipment, etc., can solve problems such as unattractive visual appearance, unwanted swinging motions, equipment and personnel dangers, etc., and achieve the effect of improving the stability of the boat and attractive visual profil
Inactive Publication Date: 2020-12-10
PROTEUS BOAT LIFTS LLC
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Summary
Abstract
Description
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Benefits of technology
The invention is a lifting system for a boat that improves stability and visual appeal. This helps to keep the boat upright and secure when it is lifted out of the water.
Problems solved by technology
However, these boat lifts may be visually unattractive at the pier, as well as presenting dangers to both equipment and personnel when a boat has been raised from the water and is suspended on cables with a danger of unwanted swinging motions.
However, suspending the boat from hanging cables presents difficulties in an outdoor environment since wind forces on the boat may induce swinging which can be hazardous to both the boat and personnel.
During lifting or lowering, while the boat is partially out of the water, wave forces present additional opportunities for unwanted boat motions possibly leading to hull damage and / or personnel injuries.
In addition to these operational disadvantages, a group of overhead cranes arrayed along the length of a pier clearly will present an unattractive appearance.
Method used
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first embodiment
[0093]A first embodiment, which is a boat lift, comprising multiple boat lift assemblies, at least one boat lift assembly including a lift beam; a lifting structure configured to move along the lift beam; and a lifting actuator assembly, located inside the lift beam and configured to move the lifting structure.
[0094]A second embodiment, which is the boat lift of the first embodiment, wherein the boat lift assembly further comprises a top beam; and a pier counterweight; wherein a first end of the top beam is attached to an upper end of the lift beam, and wherein a second end of the top beam is attached to the pier counterweight.
[0095]A third embodiment, which is the boat lift of the first embodiment, wherein in the boat lift assembly, the lifting structure further comprises a bunk pivot; and a bunk cushion attached to the bunk pivot.
[0096]A fourth embodiment, which is the boat lift of the third embodiment, wherein in the boat lift assembly, the lifting structure further comprises a c...
eleventh embodiment
[0103]An eleventh embodiment, which is a boat lift assembly, comprising a lift beam; a lifting structure configured to move along the lift beam; and a lifting actuator assembly, located inside the lift beam and configured to move the lifting structure.
[0104]A twelfth embodiment, which is the boat lift assembly of the eleventh embodiment, further comprising a top beam; and a pier counterweight; wherein a first end of the top beam is attached to an upper end of the lift beam, and wherein a second end of the top beam is attached to the pier counterweight.
[0105]A thirteenth embodiment, which is the boat lift assembly of the eleventh embodiment, wherein the lifting structure further comprises a bunk pivot; and a bunk cushion attached to the bunk pivot.
[0106]A fourteenth embodiment, which is the boat lift assembly of thirteenth embodiment, the lifting structure further comprising a carriage channel; and a bunk base; wherein the bunk base is attached to the carriage channel, and the bunk p...
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Abstract
A boat lift for raising boats out of the water to facilitate maintenance and to reduce corrosion and contamination. The boat lift includes two or more boat lift assemblies positioned and spaced apart so that each boat lift assembly lifts approximately the same fraction of the overall weight of the boat. Each boat lift assembly has a lifting structure with bunk cushions mounted on pivoting bunk bases to prevent damage to the boat hull when lifting. Hydraulic lift mechanisms are enclosed within each boat lift assembly providing a cleaner appearance as well as protection against corrosion and fouling. A dual-pulley mechanism enables lifting distances substantially larger than the length of the lift mechanism. A hydraulic controlsystem ensures that all the boat lift assemblies move up and down simultaneously and at the same rate, thereby maintaining the boat horizontal at all lifting positions.
Description
RELATED APPLICATIONS[0001]The present application claims priority from U.S. Prov. Pat. No. 62 / 857,711, filed Jun. 5, 2019.TECHNICAL FIELD OF THE INVENTION[0002]The present invention relates to systems for lifting boats out of the water to facilitate maintenance and to reduce corrosion and contamination.BACKGROUND OF THE INVENTION[0003]Boat maintenance, cleaning, repairs and / or storage may be facilitated by raising the boat out of the water, typically using a boat lift. Thus, boat lifts are now widely used. However, these boat lifts may be visually unattractive at the pier, as well as presenting dangers to both equipment and personnel when a boat has been raised from the water and is suspended on cables with a danger of unwanted swinging motions.[0004]Often, boat lifts have employed cable lifting mechanisms which are essentially overhead cranes. For stability, there are typically at least two or more of these hoisting mechanisms spaced along the length of the boat to enable more even...
Claims
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Application Information
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