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:
Nov. 10, 1992
Filed:
Sep. 07, 1990
Gustav Lindqvist, Esbo, FI;
Masa-Yards Oy, Helsinki, FI;
Abstract
A ship's hull designed for traffic in icy waters has a general form defining a bottom that is substantially horizontal in longitudinal section and has a central longitudinal keel line, and, at both sides of the bottom, sides that extend upward from the bottom. The bottom of the hull is formed with a depression at each side of the keel line. Each depression has a rear edge oriented obliquely relative to the keel line and extending to the rear of the hull from an inner location close to the keel line to an outer location farther from the keel line and at which the depression is open towards one side of the hull. The rear edge of each depression forms a substantially vertical guide surface for ice chunks under the hull's bottom.