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US 9,815,527 B2Granted
Marine lift for multi-hull vessels
AssigneeRobertson & Caine (Pty), Ltd.
InventorsJohn Robertson, Alexander Simonis
Life of this patent
Estimating the term…
Abstract
Marine lift apparatus for raising and lowering vessels, platforms, and cargo are disclosed. A lift apparatus comprises a multi-component structure capable of movement, at least one flexible member, and at least one piston device. In some aspects, marine lift apparatus facilitates the level raising, lowering, and storing of vessels, platforms, and cargo. Lift apparatus mountable onto multi-hull vessels, such as catamarans, configured for lifting a combination swim and dinghy platform are also disclosed.
Claims17
A multi-hull vessel lift apparatus, comprising:
- (a) a pair of lift assemblies positioned in parallel, each lift assembly comprising:
- (i) a horizontal support brace configured to attach to a multi-hull vessel, the support brace having a support brace first end and a second end;
- (ii) a horizontal lifting bar generally parallel with the horizontal support brace, the horizontal lifting bar is generally below the support brace, the horizontal lifting bar having a lifting bar first end and second end;
- (iii) a slide arm extending between the support brace and the lifting bar, the slide arm having a slide arm first end and second end, the slide arm first end being slidably connected to the support brace first end, and the slide arm second end being slidably connected to the lifting bar second end;
- and
- (iv) a link arm extending between the support brace and the lifting bar, the link arm having a link arm first end and second end, the link arm first end being pivotally connected to the lifting arm first end, the link arm second end being pivotally connected to the support brace second end, the link arm and the slide arm being pivotally interconnected at a joint, forming a scissor like structure;
- and
- (b) a lifting assembly configured to facilitate raising and lowering of the lift bar.
5 more elements
A multi-hull vessel lift apparatus, comprising:
- (a) a lift assembly attached to a multi-hull vessel crossdeck, the lift assembly comprising:
- (i) a horizontal support brace configured to attach to a multi-hull vessel, the support brace having a first end and a second end;
- (ii) a horizontal lifting bar generally parallel with the horizontal support brace, the horizontal lifting bar is generally below the support brace, the horizontal lifting bar having a lifting bar first end and second end;
- (iii) a slide arm extending between the support brace and the lifting bar, the slide arm having a slide arm first end and second end, the slide arm first end being slidably connected to the support brace first end, and the slide arm second end being slidably connected to the lifting bar second end;
- and
- (iv) a link arm extending between the support brace and the lifting bar, the link arm having a link arm first end and second end, the link arm first end being pivotally connected to the lifting arm first end, the link arm second end being pivotally connected to the support brace second end, the link arm and the slide arm being pivotally interconnected at a joint, forming a scissor like structure;
- and
- (b) a lifting assembly configured to facilitate raising and lowering of the lifting bar;
- and
- (c) a platform connected to each lifting bar, wherein the platform is substantially level when the lift apparatus is in the raised position, the lowered position and therebetween.
7 more elements
Dependencies are inferred from the claim text.