Patent ID: 6951107
Filing Date: 2005-10-04
Classification: F01K

Abstract:
1. A steam-to-vacuum engine comprising: a first cylinder having a first piston and a first steam chamber, said first piston bounding said first steam chamber, a second cylinder having a second piston and a second steam chamber, said second piston bounding said second steam chamber, said first and second pistons connected for synchronous movement, each piston in each of said cylinders moveable between an expanded position and a collapsed position, movement from said expanded position to said collapsed position defining a power stroke, and movement from said collapsed position to said expanded position defining a steam intake stroke, a power stroke in one of said first and second cylinders occurring simultaneously with a steam intake stroke in the other of said first and second cylinders, a plurality of valves controlling exposure of said steam chamber of one of said first and second cylinders to a vacuum during the power stroke of each one of said cylinders, and said plurality of valves further controlling admission of steam into said steam chamber of one of said first and second cylinders during the steam intake stroke of each one of said cylinders, the power stroke in one of said cylinders driving the steam intake stroke in said other cylinder.