Patent ID: 8266994
Filing Date: 2012-09-18
Classification: B23Q,B27G,Y10T

Abstract:
1. A power miter saw of the type which has a saw blade and motor assembly having a blade arbor on which a blade can be installed and a motor operatively connected to drive said arbor and an installed blade, a frame support for supporting said assembly, an upper fixed blade guard for encasing upper reaches of the installed blade without encasing the blade arbor, and a lower swinging blade guard for covering the lower reaches of the installed blade when the saw is in its rest position and for exposing the blade when moved to its operational position, the saw comprising: an elongated linkage mechanism including a first end portion having a first connection to said frame support for supporting the saw blade and motor assembly and a second end portion having a second connection to said lower blade guard for moving said lower blade guard in response to movement of the saw between the rest and operational positions, such that the lower blade guard covers the lower reaches of the blade when the saw is in its rest position and uncovers the lower reaches of the blade when the saw is moved to its operational position; wherein said linkage mechanism is substantially rigid and configured to be pivotable only at said first and second connections while maintaining a same shape during the movement of the saw between the rest and operational positions; and said linkage mechanism is further configured to be selectively detached at the first connection from said frame support, thereby enabling said lower blade guard to be placed in a change position wherein the lower blade guard is raised to expose the blade arbor to facilitate changing of the blade, and be reattached at the first connection to said frame support to hold said lower blade guard in said change position.