diff --git a/README.md b/README.md
index 79fa9f4..7247573 100644
--- a/README.md
+++ b/README.md
@@ -3,6 +3,25 @@ A gear module for FreeCAD
 
 ![gear](examples/spiral.png)
 
+## supported gear-types:
+- cylindric involute
+  - shifting
+  - helical
+  - double helical
+  - undercut
+
+- involute rack
+
+- cylindric cycloid
+  - helical
+  - double helical
+
+- spherical involute bevel-gear
+  - spiral
+
+- crown-gear
+
+
 Use only with FreeCAD version > 0.16
 
 * install on Linux:
diff --git a/examples/animation.py b/examples/animation.py
new file mode 100644
index 0000000..e786dce
--- /dev/null
+++ b/examples/animation.py
@@ -0,0 +1,18 @@
+# script for bevel-gear animation
+
+from PySide import QtGui, QtCore
+
+doc = App.ActiveDocument
+g2 = doc.Common
+g1 = doc.Common001
+
+timer = QtCore.QTimer()
+
+def update(*args):
+    print("time")
+    delta_phi = 0.005
+    g1.Placement.Rotation.Angle += delta_phi * 2
+    g2.Placement.Rotation.Angle -= delta_phi
+
+timer.timeout.connect(update)
+timer.start()
\ No newline at end of file
diff --git a/examples/bevel_gear_animation.fcstd b/examples/bevel_gear_animation.fcstd
new file mode 100644
index 0000000..b3ede20
Binary files /dev/null and b/examples/bevel_gear_animation.fcstd differ