Harold Arthur Syfritt

US Patent:

6619224, Sep 16, 2003

Filed:

May 24, 2002

Appl. No.:

10/154473

Inventors:

Harold A. Syfritt - San Pedro CA 90731-5515

International Classification:

B63B 704

US Classification:

114352, 114345, 114355, 114284, 114285, 441 40

Abstract:

A modular marine vessel has a variable hull and a plurality of boat forming modules including a bow section module, a load section module having a bow end and an aft end, and a bulkhead forming module is detachably connected to each bow and aft end of the load section module. The bulkhead forming module that is connected at the bow end of the load section module is detachably connected to the bow section module. Each boat forming and bulkhead forming module includes a topside section and a hull bottom side section. The topside section of each boat forming module has a shell gunnel portion, and the hull bottom side section of each boat forming module has a pivotally mounted bottom shell hull portion. The gunnel and hull portions of the load and bow section modules are detachably connected end-to-end, and sealingly juxtaposed the detachably connected bulkhead forming module to prevent water from entering the boat when the boat engages water. The bottom shell hull portion is pivotally mounted across a keel tunnel using a pneumatic, hydraulic, mechanical, or electro-mechanical actuator to form a preselected hull shape as desired.

US Patent:

39302741, Jan 6, 1976

Filed:

Oct 11, 1974

Appl. No.:

5/513981

Inventors:

Harold A. Syfritt - Manhattan Beach CA

International Classification:

B63B 708

US Classification:

9 2A

Abstract:

The assembly includes a longitudinal axis and opposite end surfaces transverse to the longitudinal axis. The container has a structure effective to receive both liquids and gas mediums therein and has valves for introducing and exhausting both liquid and gas mediums. An elongated frame structure has a plurality of parallel linear support members wherein each support member is laterally spaced with respect to any other lateral support member, and a separate end frame portion connected at each end of the support members to form an open structural configuration for receiving the collapsible container. The elongated container is fastened to the frame structure with the longitudinal axis thereof disposed substantially parallel to the linear support members and each of the end surfaces of the container being disposed adjacent an end frame portion to support the container within the frame structure during use. The container is attached to the frame structure with one of the linear support members extending longitudinally along one side of the container with the opposing side of the container being free of a support member. The assembly may be used as a pontoon when the container is inflated with a gas fluid medium and is employable in other uses such as a fresh water reservoir, a ballast, a sea anchor, a pitch and roll stabilizer and the like when the container is not inflated or holdls a liquid fluid medium.