Retractable or storable thruster using a trapezodidal deformably rotatable device producing rectilinear movement inside a well
US5152240A · kind A · utility
Inventor
Key dates
| Filing date | Mar 29, 1991 |
| Grant date | Oct 6, 1992 |
| Priority date | — |
| Expiry date | Mar 29, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB63H2025/425
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A retractable and storable thruster for a vessel, using a trapezoidal deformably rotatable device producing rectilinear movement inside a well in the vessel's hull. A casing (1) is sealingly fixed on joint planes in a well (2) which is an integral part of the structure (3) of the vessel. Within this casing (1) are folded two arms (4) and (5) pivoting asymmetrically, a motor (10), a stirrup (17) secured to the motor, and a propulsion screw assembly. The two arms (4) and (5), on the one hand, are pivoted at (6) and (7) on the casing (1) and, on the other hand, at (8) and (9) on the stirrup (17) secured to the motor (10). Under manual or mechanical action (X) or (Y) exerted on a lever (12) secured to the arm (4) by a shaft (6), this arm (4) in compound rotation with the triangulation arm (5) causes the deformation of the trapezium obtaining a rectilinear movement in a direction parallel to axis (A Z) of the motor (10) at its axis (11).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.