Patent ID: 8434236

Claim:
A chain saw apparatus comprising: a body; a guide bar extending from said body; a drive sprocket rotatably mounted to said body; a chain affixed to said drive sprocket and to said guide bar so as to move along said guide bar; a lossenable engagement device positioned on said body and cooperative with said guide bar so as to allow said guide bar to move in a first direction toward said drive sprocket and in a second direction away from said drive sprocket, said first direction suitable for relaxing tension on said chain, said second direction suitable for tensioning said chain; and a means for automatically pushing said guide bar away from said drive sprocket when said engagement device is loosened, said means for automatically pushing comprising a slide having a rear end resting against a rear end of said guide bar, said pushing means for automatically pushing having an elastic component having one end resting against said body and an opposite end resting against a surface at a front end of said slide.