Land vehicles – Wheeled – Tiltable vehicles – stabilized by attendant or article
Reexamination Certificate
1999-05-03
2001-06-12
Mai, Lanna (Department: 3619)
Land vehicles
Wheeled
Tiltable vehicles, stabilized by attendant or article
C280S414100, C280S047170, C114S344000, C414S444000
Reexamination Certificate
active
06244603
ABSTRACT:
FIELD OF THE INVENTION
This invention relates to a truck for transporting land- and water-craft, such as a jet ski, snowmobile, or sailboat. More particularly it relates to a wheeled truck that can be rolled by hand over various types of surfaces to transport a craft from place to place.
BACKGROUND OF THE INVENTION
U.S. Pat. Nos. 2,844,383; 3,917,083; 4,392,665; 4,544,172; and 4,603,872 disclose different hand-operated, wheeled transporters for moving water-craft, such as boats, sailboards, and jet skis over various types of surfaces. Of these only U.S. Pat. No. 4,603,872 appears to relate specifically to transporting a jet ski. The jet ski dolly disclosed in that patent comprises a frame having a bow that engages the bow of the jet ski. The frame bow is supported by a single wheel beneath it. In order for the bow of the frame to engage the bow of the jet ski, the frame must apparently be placed forward of the jet ski's bow, and the jet ski's bow must be raised while the dolly is rolled rearward. Once the frame's bow is gripping the jet ski's bow, the rear ends of handles that extend rearward along and beyond the sides of the jet ski can be grasped and lifted, thereby lifting the jet ski for transport in the manner of a wheelbarrow. Needless to say, such a procedure requires the exertion of a substantial amount of human effort, both to ready the jet ski for transport, and then to transport it.
SUMMARY OF THE INVENTION
One aspect of the present invention relates to a hand truck that is significantly more convenient for an individual to use. Use of a hand truck that embodies principles of the present invention does not require any preliminary lifting of the craft that is to be transported in order to associate the truck with the craft. Moreover, once the inventive truck has been associated with the craft, less human effort is required in order to elevate the craft from an underlying surface. Still further, much less effort has to be exerted in order to maintain the craft elevated during transport.
A truck that embodies principles of the present invention can be economically fabricated because of its use of a metal frame that can be manufactured by conventional metal fabrication methods, and its use of wheels, tires, and hubs that are commercially mass-produced.
The inventive truck possesses features that make it especially useful for various purposes, not only for transporting a jet ski, snowmobile, or sailboat, but for transporting other items as well.
The foregoing, and other features, along with various advantages and benefits of the invention, will be seen in the ensuing description and claims which are accompanied by drawings. The drawings, which are incorporated herein and constitute part of this specification, disclose a preferred embodiment of the invention according to the best mode contemplated at this time for carrying out the invention.
REFERENCES:
patent: 4392665 (1983-07-01), Miller et al.
patent: 4422665 (1983-12-01), Hinnant
patent: 4544172 (1985-10-01), Poulouin
patent: 4603872 (1986-08-01), White
patent: 4685854 (1987-08-01), Bulle
patent: 5000468 (1991-03-01), Weinstein
patent: 5005846 (1991-04-01), Taylor
patent: 5267746 (1993-12-01), Steveson
patent: 5513939 (1996-05-01), Martin et al.
patent: 5709397 (1998-01-01), Hall
patent: 5823551 (1998-10-01), Conroy
patent: 6071061 (2000-06-01), Monnin
Boller George L.
Mai Lanna
Restifo Jeff
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