Car topable catamaran with collapsible frame and universal tiller/rudder-mast daggerboard mounting constructions
US5313908A · kind A · utility
Inventor
Key dates
| Filing date | Oct 5, 1990 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Oct 5, 2010 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H9/06
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A catamaran has a collapsible frame and a pair of elongated pontoons spacedly secured in collapsible frame. The frame includes fore and aft cross bar sub-frame members and a pair of longitudinally extending sub-frame members and a support platform supported on the frame. Each said longitudinally extending sub-frame member being molded and including a pontoon embracing longitudinal cavity which is the length of the longitudinally extending sub-frame member, and a pair of parallel longitudinal edges, one longitudinal edge at each side of the longitudinal cavity, respectively. A first of the longitudinal edges has a slot therein and the other of the longitudinal edges has a shape complementary to the longitudinal slot whereby pairs of longitudinal edges of the pair of molded sub-frame members, respectively, can interfit such that the concavities face each other to form a storage space for the pontoons and the fore and aft tubular sub-frame member when not in use. The pontoon embracing cavity may include an arcuate concave wall extending between said pair of longitudinal edges. A centerboard and/or rudder mounting member is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.