Amphibious vehicle

Marine propulsion – Self-propelled vehicle having land and water propulsion means – Having separated propulsion means for land and water

Reexamination Certificate

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Details

C280S043230, C440S012660, C114S344000

Reexamination Certificate

active

10526726

ABSTRACT:
An amphibious vehicle wheel suspension includes upper and lower linkages, a road suspension device and a retraction device for moving the wheel between a protracted position for road use, and a retracted position for marine use. Suspension device can be operatively disconnected from the wheel and/or the linkages to allow for retraction and protraction. Retraction device may also be disconnected for road use. The disconnection mechanisms may comprise a ball and track mechanism, interlocking splines, interlocking teeth, or a pneumatic clutch. Also provided is a combination of splines for a suspension lever arm, and a pneumatic clutch for retraction arm. Suspension device may be connected to upper linkage. Coil, torsion bar, or hydropneumatic springs may be used.

REFERENCES:
patent: 2893019 (1959-07-01), Renfroe et al.
patent: 3755838 (1973-09-01), Dunagan
patent: 3831210 (1974-08-01), Ow
patent: 4958584 (1990-09-01), Williamson
patent: 0970825 (2000-01-01), None
patent: 2372795 (2002-09-01), None
patent: WO 93/15923 (1993-08-01), None
patent: PCT/WO95/23074 (1995-08-01), None
patent: PCT/WO02/44006 (2002-06-01), None

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