Politechnika Gdanska

Jerzy W Doerffer

Lech Rowinski

Jan Klopocki

Andrzej Niepiekto

Jan Kozlowski

Andrzej Niepieklo

Jerzy Madey

Boguslaw Siwek

A free fall, submersible life saving device for an offshore structure has a spherical pressure shell in a casing. The upper part of the device has a lifting frame and at least one manhole closed with a cover and the lower part has ballast, an anchor, and a windlass 5 for the anchor rope having automatic control of the tension in the anchor rope. The device is launched by a catapult on the offshore structure for horizontal movement in free fall to the water surface, where it submerges and is anchored until resurfacing, by release of the anchor, for rescue.

Free fall submersible life saving device for offshore structures

This invention relates to braking rudder device consisting of turning rudder blade, horizontal plates and fixed rudder post, which is characterized by dividing the rudder blade in plane of symmetry in two blades, which are turning independently by an angle up to 110.degree. around their common axis where they are connected hingewise and their trailing edge is in the form of a wedge, while each of the blades are stiffened by horizontal plates which in extreme outboard position are bearing upon the rudder post and along the trailing edges are fitted vertical flaps capable of turning by an angle up to 90.degree..

Braking rudder device

This invention relates to stern braking device in a form of a shield, which is characterised by placing the shield behind the propeller and the rudder, which at top part has a concave cross section on both sides of plane of symmetry and a hydraulic stabilizer and is hingewise connected at the top, to a lifting gear capable of sliding up and down, whereas the bottom of the shield is connected hingewise to the ship's hull.

Stern braking device

Growing community of inventors

Sopot, Poland

Jerzy W Doerffer