%% 
%%  A DANTE-Edition example
%% 
%%  Example 09-09-1 on page 108.
%% 
%%  Copyright (C) 2011 Herbert Voss
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 
%% 
%% ==== 
% Show page(s) 1
%% 
\documentclass[]{article}
\pagestyle{empty}
\setlength\textwidth{177.70511pt}
\setlength\parindent{0pt}

\usepackage{pstricks}

\begin{document}
\def\myCoil{\pscurve(-0.5,0.5)(-0.1,0.45)(0.3,0)%
  (0,-0.5)(-0.3,0)(0.1,0.45)(0.5,0.5)}%
\begin{pspicture}[unit=0.5,linewidth=1.5pt](2,0.5)
 \multips(0,0)(1,0){4}{\myCoil}
\end{pspicture}
\end{document}