The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 16, 1993
Filed:
Jun. 30, 1992
Koichi Kinoshita, Tokyo, JP;
Jal Data Communications & Systems Co., Ltd., Tokyo, JP;
Abstract
A floatable structure propelling mechanism is combined with a floatable structure filled with helium gas to propel the floatable structure for flying in the air. The floatable structure propelling mechanism comprises a pair of lateral fins supported for swing motion respectively on the opposite sides of a middle portion of the floatable structure. The driving mechanism for driving the lateral fins for swing motion alternately in opposite direcitons in a vertical plane comprises a rotative driving unit provided near the lower surface of the middle portion of the floatable structure. The rotative driving unit includes a double crankshaft which is rotated by the driving unit, first connecting rods fixed to the lateral fins, respectively, and second connecting rods interconnecting the crank pin portions of the double crankshaft and the free ends of the first connecting rods, respectively. The lateral fins include a framework which permits flexing of each lateral fin to relax the fin and decrease resistance to air during upward motion. During downward motion, the framework of the lateral fins attains a rigid configuration to tension the lateral fin and provide improved lift for propelling the floatable structure for flying.