A linear compressor having a cylinder (2) and a piston (1) that is moved
by an electric linear motor (4, 5, 6) is provided with one or more
elastic elements (30, 50) made of steel wire having a central volute
portion (30a, 50a). A leg (30b, 30c, 50b, 50c) extends from each end of
the central volute portion (30a, 50a). In a first embodiment, one of the
legs (30b) is fastened internally of the piston (1) and the other leg
(30c) to a part of the cylinder (2). In a second embodiment, the central
volute portion (50a) is mounted directly to the piston (1) and the two
legs (50b, 50c) are fixedly connected to the cylinder (2). When the
piston is moved by the action of the electric linear motor, the wire of
the central volute portion of the elastic element distorts and stretches
in the direction of travel of the piston. It is preferred that several
elastic elements be mounted to the piston (1) having like portions of the
central volute portion angularly spaced apart. Such arrangement provides
a more equal distribution of the forces of the piston acting against the
central volute portions of the elastic elements.