Beta type stirling cycle device

Details Beta type stirling cycle device Beta type stirling cycle device

2006-05-16

2006-05-16

Richter, Sheldon J (Department: 3748)

Power plants

Motor operated by expansion and/or contraction of a unit of...

Unit of mass is a gas which is heated or cooled in one of a...

C060S519000, C060S520000, C060S525000

Reexamination Certificate

active

07043909

ABSTRACT:
A coaxial Beta type Stirling cycle device, having a power piston and a displacer coaxially positioned in series within an enclosing cylinder. The power piston and power piston shaft have an opening wherein the displacer shaft passes through. A compression chamber is formed between the pistons. An expansion chamber is formed between the displacement piston and one end of the cylinder. There is a gas path provided, so that a working gas within the cylinder can pass back and forth between the expansion chamber and the compression chamber as the pistons reciprocate. The power piston and the displacer each has its own linkage to a common cam body, which has a cam groove for the power piston and a cam groove for the displacer. The cam body is a face cam having multiple cam grooves, or a barrel cam having multiple cam grooves. The cam grooves may be shaped to provide infinitely settable stroke, dwell, and phase angle. A plurality of single-cylinder devices can share a single common barrel cam and shaft, thus making a multi-cylinder “cluster” configuration engine. Each cylinder, combined with its pistons and yoke assemblies, is identical and easily replaceable, thus providing improved reliability, maintainability and reduced part count.

REFERENCES:
patent: 5394700 (1995-03-01), Steele
patent: 5442913 (1995-08-01), Cho et al.
patent: 5533335 (1996-07-01), Shin
patent: 2003/0074897 (2003-04-01), Rollston
U.S. Appl. No. 60/448,070, Steele.

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