Back to results
US 4,444,011 AGranted
Hot gas engine
AssigneeGrace Dudley
InventorIvo Kolin
Life of this patent
Estimating the term…
Abstract
A hot gas engine has an elastic and a lost motion connection between the working piston and the displacer, resulting in a rapid shifting of the displacer between its extreme positions. The hot and cold walls between which the displacer reciprocates are substantially planar and parallel, and the displacer is in the shape of a plate. The working piston comprises a diaphragm, so that there is no loss of working gas from the motor chamber.
Claims14
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- displacer means disposed for reciprocation between two maximum displacement positions in the chamber forming means,
- working piston means mounted for reciprocation and exposed to the working gas, and
- means coupling the displacer means with the working piston means for rapidly shifting the displacer means between the two maximum displacement positions, the coupling means including elastic means and biasing the displacer means towards its two positions of maximum displacement.
1 more element
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- displacer means disposed for reciprocation between two maximum displacement positions in the chamber forming means,
- working piston means mounted for reciprocation and exposed to the working gas,
- means coupling the displacer means with the working piston means for rapidly shifting the displacer means between the two maximum displacement positions,
- means for supplying a heating medium to one portion of the chamber forming means, and
- means for supplying coolant to another portion of the chamber forming means,
- the displacer means being disposed for reciprocation between the heated portion and the cooled portion of the chamber forming means.
4 more elements
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- displacer means disposed for reciprocation between two maximum displacement positions in the chamber forming means,
- working piston means mounted for reciprocation and exposed to the working gas, and
- means coupling the displacer means with the working piston means for rapidly shifting the displacer means between the two maximum displacement positions,
- the chamber forming means and the displacer means being formed of a heat-insulating material.
2 more elements
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- displacer means disposed for reciprocation between two maximum displacement positions in the chamber forming means,
- working piston means mounted for reciprocation and exposed to the working gas,
- means coupling the displacer means with the working piston means for rapidly shifting the displacer means between the two maximum displacement positions, and
- regenerator means disposed in the chamber forming means adjacent the periphery of the displacer means.
2 more elements
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- a first portion of the chamber forming means being substantially planar,
- means for supplying a heating medium to the first planar chamber portion,
- a second portion of the chamber forming means being substantially planar and parallel to and spaced from the first planar chamber portion,
- means for supplying a coolant to the second planar chamber portion,
- a displacer plate disposed for reciprocation between the first and second planar chamber portions and substantially parallel thereto, a dimension of the displacer plate perpendicular to the direction of reciprocation being large in comparison with the spacing between the first and second planar chamber portions,
- working piston means mounted for reciprocation and exposed to the working gas, and
- means for coupling the displacer means with the working piston means.
5 more elements
A hot gas engine comprising:
- means forming a chamber for containing a working gas,
- displacer means disposed for reciprocation between two maximum displacement positions in the chamber forming means,
- working piston means mounted for reciprocation and exposed to the working gas, and
- means for coupling the displacer means with the working piston means so that the displacer means remains in the two maximum displacement positions during most of each operating cycle.
1 more element
Dependencies are inferred from the claim text.