Resources Contact Us Home Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE     Water supporting and propulsion systems Image Number 3 for United States Patent #4953492. An improved watercraft and propulsion system is disclosed for moving a watercraft such as an amphibious vehicle or a speed boat from 0 velocity to speeds in excess of 20 miles per hour. Each watercraft includes water propulsion systems which are preferably pivotally mounted on or near the rear end of the watercraft for pivotal movement between a transversely aligned stowed position above the vehicle and an operative position within the watercraft and below the vehicle. Hydrofoils may be connected to the water propulsion system, and bow or transom flaps plus the planing hull of the vehicle aids in providing adequate lift when in the water.       Recently Added Patents Laser controller Stock monitoring Mechanical seal device, sliding element, and method of production thereof Method for extracting ammonium salt and methanol from a liquid obtained from foul condensates in a cellulose pulp mill Rail vehicle assembly system and method Pre-emplaced electrical vehicle restraint Adaptive ring signal level device and method   Randomly Featured Patents Array compression method Method and apparatus for virtual reality presentation of civil engineering, land planning and infrastructure Solder-coating method, and solder paste suitable for use therein Starting system for a turbine engine Security jet ink Method for suppressing noise in signals Salmeterol xinafoate with controlled particle size Apparatus for treating a substrate Disengageable coupling usable in a sheet transport mechanism High-performance, CMOS latch for improved reliability © 2006-2008 PatentGenius. All Rights Reserved.