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:
Sep. 14, 1993
Filed:
May. 15, 1991
Applicant:
Inventors:
Assignee:
Sanshin Kogyo Kabushiki Kaisha, Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
440 47 ; 440 38 ; 114270 ;
Abstract
An arrangement is provided for variably adjusting the effective flow area along a region within a water injection propulsion unit. The invention is adapted to be embodied in a small watercraft of the type that is designed to be operated by a single rider sitting in straddle fashion on the watercraft. The flow area adjustments may be made in response to the value of a selected operating variable, or several variables, which may be measured during the operation of the watercraft. The invention allows attainment of optimum accelerability at low to medium speeds, and optimum accelerability and top speed at high speeds.