Patent ID: 8707569

Claim:
A quick change chain saw system, comprising: a hydraulic clamping device including a hydraulic clamp block, a puck plate and a clamp plate; at least two projections extend from said puck plate, said at least two projections are inserted through at least two openings in said hydraulic clamp block, said clamp plate is secured to said at least two projections; a plurality of clamp pucks are retained in said hydraulic clamp block to exert force on said puck plate with hydraulic oil; a swing arm extends from said hydraulic clamp device, said swing arm includes a bearing bore; means for biasing said puck plate away from said bearing bore; and a retraction device for retraction of said puck plate toward said bearing bore, said retraction device includes a handle and a pull member, one end of said pull member is pivotally retained on said handle, a pivoting loop is formed on the other end of said pull member, said pivoting loop is sized to receive a chain catcher, said handle is pivotally engaged with said hydraulic clamp device.