Abstract: A suspension system for an amphibious vehicle is able to be locked in either a lowered or in a retracted position according to whether the vehicle is on land or in water, respectively. The suspension system includes a main suspension arm pivoted to a vehicle hull at one end thereof and has a rotably mounted road wheel thereon at an opposite end thereof. A moving mechanism operably attached to the pivoted main suspension arm enables the arm and the road wheel to be retracted relative to the hull. An upper suspension link is operably and pivotally connected to the road wheel end of said main suspension arm and has a pivoted joint intermediate its ends. The upper suspension link is operably engagable with a suspension position locking mechanism in both the lowered and retracted positions.

Abstract: A vehicle having a wheel which is movable between a lower position and a raised position by a wheel retraction and lowering mechanism is described, the mechanism including a guide to determine the path of the wheel during retraction, said guide being in the form of a pillar, and characterised in that a lower portion (c;16) of which is slidable relative to an upper portion (B;14) whereby the length of the pillar is less when the wheel is in its retracted position than when it is in its lowered position.

Abstract: A suspension system for an amphibious vehicle is described, the suspension system being able to be locked in either a lowered or in a retracted position according to whether the vehicle is on land or in water, respectively, the suspension system comprising: a main suspension arm (14) pivoted to a vehicle hull at one end thereof (20), the arm having a rotatably mounted road wheel (12) thereon at an opposite end thereof; moving means, (30) operably attached to said pivoted main suspension arm to enable said arm and said road wheel to be retracted relative to said hull; an upper suspension link (120) operably and pivotally connected to the road wheel end of said main suspension arm, said upper suspension link having a pivoted joint (60) intermediate its, ends; said upper suspension link being pivoted on said hull at an axis (52) remote from said pivoted joint; said upper suspension link being operably engagable with suspension position locking means (122, 130, 132, 136, 138) in both lowered and retracted positio