Frame for inflatable catamaran
OwnerGraeme J. Boddyinventor
Life of this patent
Estimating the term…
Abstract
A frame for an inflatable catamaran, consisting of an inner frame each side of which has two pairs of side frames pivoted to it; inflatable tubes forming the hulls of the catamaran are secured on each side of the frame, by securing the side frame to the tubes at spaced apart positions; the frame is arranged to fold substantially flat for storage.
Claims17
A frame for an inflatable catamaran of the type including two spaced inflatable elongated hulls of substantially circular cross section, each hull having a lower surface which normally is submerged in use and an upper surface which normally is not submerged in use;
- said frame comprising:
- an inner frame which includes two spaced elongated members forming the sides of said inner frame and two spaced cross-members connecting said sides together;
- and first and second pairs of side frames, each side frame including an elongated member which in use extends parallel to the length of the adjacent inflatable hull;
- one of the side frames of the first pair of side frames is pivoted to one of said sides of said inner frame and the remaining side frame of the first pair of side frames is pivoted to the other side of said inner frame;
- one of the side frames of the second pair of side frames is pivoted to one of said sides of said inner frame and the remaining side frame of the second pair of side frames is pivoted to the other side of said inner frame;
- each side of said inner frame providing a common pivot axis fort the side frames pivoted to that side;
- the elongated members of the first pair of side frames being securable one to each of the upper surfaces of the catamaran hulls;
- and each elongated member of the side frames of the second pair being securable one to each of the catamaran hulls at a position below the securement position of said first pair of side frames;
- and means for releasably locking said first pair of side frames in position relative to said inner frame.
An inflatable catamaran comprising the combination of two spaced inflatable elongated hulls of substantially circular cross section, each hull having a lower surface which normally is submerged in use and an upper surface which normally is not submerged in use;
- secured together by a frame comprising:
- an inner frame which includes two spaced elongated members forming the sides of said inner frame and two spaced cross-members connecting said sides together;
- and first and second pairs of side frames, each side frame including an elongated member which extends parallel to the length of the adjacent inflatable hull;
- one of the side frames of the first pair of side frames is pivoted to one of said sides of said inner frame and the remaining side frame of the first pair of side frames is pivoted to the other side of said inner frame;
- one of the side frames of the second pair of side frames is pivoted to one of said sides of said inner frame and the remaining side frame of the second pair of side frames is pivoted to the other side of said inner frame;
- each side of said inner frame providing a common pivot axis for the side frames pivoted to that side;
- the elongated members of the first pair of side frames being secured one to each of the upper surfaces of the hull and each elongated member of the side frames of the second pair being secured one to each of the hulls at a position below the securement position of said first pair of side frames;
- and means for releasably locking said first pair of side frames in position relative to said inner frame.
In a collapsible inflatable catamaran of the type including a pair of spaced elongated hulls, the improvement in a framework comprising:
- an inner frame inclusive of two spaced elongated members forming the sides of the inner frame and two spaced cross-members connecting the sides together,
- first and second pairs of side frames with each side frame being inclusive of an elongated member extendable in parallelism with the length of an adjacent hull,
- with one side frame of each pair being pivoted to one of the sides of the inner frame and the other side frame of each pair being pivoted to the other of the sides of the inner frame,
- with each side forming a pivot axis,
- the elongated members of the first pair of side frames being securable one to each of the upper surface of a catamaran hull,
- each elongated member of the side frames of the second pair being securable one to each catamaran hull at a position below the securement position of the first pair of side frames,
- and means for releasably locking the first pair of side frames in position relative to the inner frame.
Dependencies are inferred from the claim text.