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Programmable boatlift system with boat position sensor

a technology of position sensor and boat lift, which is applied in the field of boat lift system, can solve the problems of not being able to detect the position of the boat, being exposed to water, etc., and achieve the effects of simple, durable, and simple operation

Inactive Publication Date: 2009-09-03
CARLYLE CUSTOM BUILDERS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This solution simplifies maintenance, reduces the number of components, and enables precise, automatic positioning of the boat within the lift system using a single motor and sensor, enhancing operational reliability and user control.

Problems solved by technology

They require the use of mercury switches and float switches and can be exposed to water as the boat is placed into the water.
A cable system for a boat lift using a single motor is known but it is not suitable for detecting the position of the boat within the lift system.

Method used

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  • Programmable boatlift system with boat position sensor
  • Programmable boatlift system with boat position sensor
  • Programmable boatlift system with boat position sensor

Examples

Experimental program
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Embodiment Construction

[0020]FIG. 1 shows the boatlift structure 11 of the boatlift system 10 of the present invention. The boatlift structure 11 has a front end 12 and a back end 13. The boatlift structure 11 is supported by four vertical beams 14, and has right side 15 and left side 16. A boatlift cradle 17 is suspended by a cable 21 from the upper ends of beams 14. A motor 18 is attached to the upper end of a beam 14 at the back end 13 and left side 16 of the boatlift structure 11. The motor 18 has shaft 19 that extends from the motor 18 to a bearing 20 attached at the upper end of a beam 14 at the front end 12 and left side 16 of the boatlift structure 11. Bearing 20 supports shaft 19 as motor 18 rotates shaft 19.

[0021]Cable 21 is attached to one side 22 of boatlift cradle 17 and extends upward therefrom to pulley 50, from there across to shaft 19, and from there down to the opposite side 23 of boatlift cradle 17. A boat position sensor 24 is attached to boatlift structure 11 and engages cable 21 by m...

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Abstract

A programmable boatlift system having a cable extending up from one end of a boatlift cradle, across to a shaft attached to a motor, and down to an opposite end of the boatlift cradle. The cable passes through a hole in the shaft. A position sensor having an idler sheave is placed on the cable. The motor winds or unwinds the cable around the shaft to cause the cable to move across the roller sheave to raise or lower the boatlift cradle. The position sensor produces an output signal proportional to the distance the cable travels over the idler sheave as the cable causes the idler sheave to rotate. An electronic control circuit uses the output signal to infer the vertical position of the boatlift cradle and to position the boatlift cradle as desired.

Description

CROSS REFERENCE TO RELATED APPLICATION[0001]This application is a continuation of pending patent application No. 11 / 937,937 filed Nov. 9, 2007, which is incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates to a programmable boatlift system, and, more particularly, to a boat lift system that indicates the exact position of the boat within the lift system.BACKGROUND OF THE INVENTION[0003]Programmable boat lift systems are known but they require two cables on each side of the boat, two at the front and two at the rear of the boat. Two motors are required, one for each side of the boat to operate the cables. The use of level sensors is known to stop or start the motors to position the boat as desired, but these sensors must be placed near the boat and move up and down with the boat. They require the use of mercury switches and float switches and can be exposed to water as the boat is placed into the water. The plurality of motors, cables, and sensor...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): B63C3/12B63C7/00
CPCB63C3/12B63C3/06
Inventor STANLEY, JAMES C.
Owner CARLYLE CUSTOM BUILDERS