Pontoon boat trailer

Claim 1

A trailer especially suited for transporting and launching pontoon type boats of the type including a generally planar, rectangular, deck surface with first and second elongated floatation members affixed to the underside of said deck proximate opposed side edges thereof, comprising: (a) a trailer bed mounted on wheels, the width of said bed being less than the spacing between said floatation members; (b) a plurality of linkage members pivotally coupled at one end thereof to said trailer bed at spaced apart locations along the length and at either side thereof; (c) a movable frame member having opposed sides thereof pivotally secured to the other ends of said plurality of linkage members, the opposed sides of said frame being spaced apart by a distance which is less than the spacing between said floatation members on the pontoon boat to be transported; and (d) A plurality of roller assemblies affixed to the sides of said trailer bed and adjustably extendable outwardly therefrom for abutting the floatation members on a pontoon boat being transported to prevent lateral movement of said boat with respect to said trailer bed, the arrangement being such that when a longitudinal force is applied to said movable frame member, said frame member is translated in a vertical direction.