US 2013/0152606 A1Published application

Heating and cooling device

AssigneeNational Pintung University of Science and Technology

InventorsChang-Hsien TAI, Uzu-Kuei Hsu, Jr-Ming Miao, Geng-Ren Liu

Life of this patent

Estimating the term…

Loading patent…

Abstract

A heating and cooling device includes a cylinder having a chamber for receiving a gas. A guiding groove is defined in an inner periphery of the chamber. A piston assembly is movably received in the chamber of the cylinder. The piston assembly includes first and second pistons and a connecting rod connected to the first and second pistons. The first piston is mounted to a side of the second piston and rotatable relative to the connecting rod. Each of the first and second pistons includes a plurality of openings. A guiding block is formed on an outer periphery of the first piston and is slideably received in the guiding groove.

Claims7

Dependent claims

A heating and cooling device comprising:

a cylinder including a chamber having an inner periphery, with a guiding groove defined in the inner periphery of the chamber, with the chamber adapted for receiving a gas;
and
a piston assembly movably received in the chamber of the cylinder, with the piston assembly including first and second pistons and a connecting rod connected to the first and second pistons, with the first piston mounted to a side of the second piston and rotatable relative to the connecting rod, with each of the first and second pistons including a plurality of openings, with the first piston further including an outer periphery having a guiding block, with the guiding block slideably received in the guiding groove.

Dependencies are inferred from the claim text.