WALTER ELSWORTH JOHNSON
Pilots at Colorados Dr, Millbrae, CA

License number
California A0959526
Issued Date
Sep 2015
Expiration Date
Sep 2017
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
21 Colorados Dr, Millbrae, CA 94030

Professional information

Walter Johnson Photo 1

Collapsible Boat

US Patent:
3932906, Jan 20, 1976
Filed:
May 10, 1974
Appl. No.:
5/468975
Inventors:
Walter E. Johnson - Millbrae CA
International Classification:
B63B 706
US Classification:
9 2C
Abstract:
A boat collapses to two planar thin layers of material which are preferably hinged across the middle to fold into a four-layer, conveniently transportable unit. The bottom layer has a fold at the prow but is otherwise unitary. The top layer consists of several pieces, namely, a major portion which extends from end to end and along the sides; four gunwale-forming panels hinged to the major portion longitudinally toward either end of the middle fold on either side; and two seat-forming panels hinged to the major portion transversely and each spaced toward either end. The prow of the top layer is formed with a fold similar to that in the bottom. When the boat is erected, the folds cause the prow to assume a conical shape. The gunwale-forming panels pivot downward and are latched causing the top major layer to be spaced above the bottom layer and causing the bottom to be convex. At front and rear, immediately beyond each seat-forming panel is a transverse, air-tight membrane sealed to the top major portion and to the bottom.