BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 is a cross-sectional view of a ratchet type tensioner according to the invention;
FIG. 2 is a cross-sectional view of the tensioner body;
FIG. 3 is a cross-sectional view of the plunger:
FIG. 4 is a cross-sectional view showing the tensioner in its initial state;
FIG. 5 is an explanatory cross-sectional view showing the tensioner in a state in which its ratchet does not perform a backstop function;
FIG. 6 is an explanatory cross-sectional view showing the tensioner in a state in which its ratchet performs a backstop function; and
FIG. 7 is a cross-sectional view of a conventional ratchet type tensioner.