Patent ID: 8272134
Filing Date: 2012-09-25
Classification: B23D,F01N,Y10T

Abstract:
1. A power cutter capable of using a first cutting blade with a first mounting hole and a second cutting blade with a second mounting hole, the second mounting hole having a larger diameter than the first mounting hole, the power cutter comprising: a housing and a support arm connected to said housing; an engine and a liquid fuel aeration mechanism mounted within said housing; an air intake member connected to said engine that delivers aerated fuel from said liquid fuel aeration mechanism; a fuel tank for providing fuel to said liquid fuel aeration mechanism; an exhaust member through which exhaust gases generated by said engine are expelled; a blade mounting mechanism on said support arm opposite said housing, said blade mounting mechanism including a spindle, an adaptor, and a clamping mechanism, said spindle rotatably supported by said support arm for rotation by said engine, said spindle connected to said engine on a side of said support arm opposite where the first cutting blade or the second cutting blade are secured for rotation by said blade mounting mechanism; said adaptor having an inner periphery that permits said adaptor to be freely rotatable about said spindle and slidable along said spindle in a direction parallel with an axis of rotation of said spindle, said adaptor having an outer periphery that defines a first radial surface that is operable to mount to the first mounting hole and a second radial surface that is operable to mount to the second mounting hole, said second radial surface is disposed adjacent said first radial surface and has a larger diameter than said first radial surface, said clamping mechanism including first and second disk members that are rotatably engaged with said spindle, said clamping mechanism is operable to move said first radial surface to a centrally located position between said first and second disk members when the first cutting blade is secured for rotation by said blade mounting mechanism and dispose said second radial surface in said centrally located position when the second cutting blade is secured for rotation by said blade mounting mechanism.