Title: Self-propelled boat vehicle

Abstract: The combination of a snowmobile and a watertight hull with propeller drive shaft wherein the snowmobile has a drive shaft which includes telescopically extensible section on both ends of which universal joints are provided so that the snowmobile drive shaft can be readily disconnected from its traction tread and connected to the propeller drive shaft of said hull.

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Inventors: Bawden, Ralph D. (Billings, MT, US)

Application Number: 490714
Filing Date: 1974-07-22
Publication_date: 1976-02-03
Assignee: Recreational Plastics, Inc. (Billings, MT)
Primary Class(es): 440/11
Other Classes:
US Patent Ref:

2652019	Sep, 1953	Hurst	115/34.
3105454	Oct, 1963	Baldwin	115/34.
3626891	Dec, 1971	Sessions	115/.
3646904	Mar, 1972	Lanning et al.	115/.
3707938	Jan, 1973	Olson	115/1.

Other Refs:
Primary Examiner: Blix, Trygve M.
Assistant Examiner: O'Connor, Gregory W.
Attorney: Veeder; David H.