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:
Jun. 07, 1977
Filed:
Mar. 16, 1976
Applicant:
Inventors:
Tsunemi Ikeda, Akashi, JA;
Tamotsu Sezaki, Akashi, JA;
Assignee:
Kawasaki Jukogyo Kabushiki Kaisha, Kobe, JA;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B63H / ;
U.S. Cl.
CPC ...
115 14 ; 1142 / ;
Abstract
A device for protecting the inlet or draft port of a water-jet propulsion system is disclosed. In a forward part of the inlet port of a drafting duct of a propulsion pump, a grate is mounted rotatable around a shaft which in turn is supported by a bracket. The bracket is secured to a lower part of the pump casing. A pin, passing through the grate, is urged by a spring to engage a part of the bracket to lock the grate in a position to block large objects from entering the duct. When the pin is disengaged against the force of the spring the grate is rotated to a position to permit manual entry into the duct for repair purposes.