Waterpillar

a technology of man-powered aquatic vehicles and water pillars, which is applied in the direction of marine propulsion, special-purpose vessels, vessel construction, etc., can solve the problems of high cost, inability to maintain the water pressure,

Inactive Publication Date: 2004-05-06
HART DAVID PAUL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because fixed flotation such as pontoons or hulls create a great amount of drag when forced through the water.
Because paddle wheel propulsion is very inefficient due to the energy wasted forcing the water down and the lifting it up during the paddle cycle.
Because propeller propulsion is more efficient than paddle wheels but inherently expensive and prone to damage when operated at the shoreline as is generally the case...

Method used

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Examples

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Embodiment Construction

[0037] Referring to drawings and more particularly to FIG. 1, present aquatic vehicle comprises a support structure for the pilot shown generally in drawing 2, sheet 2 composed of a light weight framework 50 supporting a pilot seat 33. The framework is of a material such as anodized aluminum or carbon fiber to not only withstand stresses but to resist corrosion from saltwater. Tubular foam flotation may be installed on the exterior of the framework for added buoyancy in case of a puncture of the flotation wheels as well as for protection of the pilot when operated in rough water.

[0038] Support structure 50 is more specifically comprised of a pair of identically fabricated end frames 40, connecting load transfer frames 28, 29 (with connection point 34), and 30, seat / crank support frame 8, seat 33, axle 6, axle bearing supports 32, pedals 1, cranks 2, drive sprocket 3, driven chain 4, driven multi-sprocket 5, driven wheel 19, forward support 17, pivot lever 13, actuating cable 15, han...

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PUM

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Abstract

A pedal-powered aquatic vehicle is a positively buoyant aquatic vehicle with a lightweight frame and driven flotation wheels on either side of the occupant(s) seat. A pedal drive is incorporated into the lightweight frame to produce propulsion through a chain driven multi-geared system coupled with a drive shaft. Outer drive wheels rotate the flotation driven wheels to propel across water and level ground. Paddles are affixed to the driven flotation wheels. Steering linkages disengage drive wheels independently to provide steering.

Description

[0001] This application stems from provisional application No. 60 / 398,552-filed Jan. 14, 2002 in the name of David Paul Hart with the title of the invention being "Waterpillar".[0002] 1. Field of the Invention[0003] The present invention relates to a man-powered aquatic vehicle, and more particularly a pedal driven aquatic vehicle in which the driven part also provides the flotation and is operational on land.[0004] 2. Background of the Art[0005] Numerous man-powered aquatic vehicles have been developed in the past that can be grouped into a few categories. An example of paddle wheel driven aquatic vehicles with the paddle wheel or wheels mounted in, beside, or behind a displacement hull and driven by pedals are presented in U.S. Pat. No. 5,381,752. Examples of bicycle type water-bikes with two hulls and a bicycle drive to a paddle or propeller are presented in U.S. Pat. No. 6,050,864 and U.S. Pat. No. 4,395,237. Examples of tricycles with ribbed flotation wheels are shown in U.S. P...

Claims

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Application Information

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IPC IPC(8): B60F3/00B62K1/00B63H1/04B63H16/20
CPCA63B19/02A63B2022/0635A63B2225/605B60F3/0069B62K1/00B63H2016/202B63B1/10B63B2241/12B63H1/04B63H16/12B63H16/20B63B1/047
Inventor HART, DAVID PAUL
Owner HART DAVID PAUL
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