Patent ID: 6932163
Filing Date: 2005-08-23
Classification: B23D,B27B,Y10S,Y10T

Abstract:
1. Saw comprising, in combination: a frame, wherein the frame is mobile on a work surface and includes a main framework and a transport framework, with the transport framework being pivotably moveable relative to the main framework, with the frame being adjustable between a working position and a transport position by pivotal movement of the transport framework relative to the main framework; an adjustment rod having a pivot end and a sliding end, with the pivot end being pivotably connected to the transport framework and the sliding end being slideably connected to the main framework, with sliding movement of the sliding end of the adjustment rod being interdependent with pivotal movement of the transport framework relative to the main framework; a locking mechanism including an elongated member, with the elongated member having a first end and a second end, with the second end of the elongated member pivotably connected to the adjustment rod intermediate the pivot end and the sliding end of the adjustment rod, with the first end of the elongated member being slideable and lockable to the main framework, with sliding of the first end of the elongated member relative to the main framework allowing movement of the adjustment rod, with locking of the first end of the elongated member to the main framework stopping sliding movement of the adjustment rod and locking the frame into the transport position; a shaft rotatably mounted to the frame about a central axis, with the shaft having an axial length, an access end and another end along the axial length; a pulley mounted on the shaft for connection with a drive belt, with the frame having a hole proximate the pulley, with the drive belt passing through the hole in the frame to connect the pulley to a drive; a first bearing and a second bearing mounted to the frame and supporting the shaft, with the first bearing located proximate the other end of the shaft, with the shaft free to rotate about the central axis, and with the first bearing and the second bearing cooperating to hold the shaft otherwise stationary relative to the frame; a third bearing located on the access end of the shaft, with the second bearing located intermediate the third bearing and the first bearing, with the pulley located intermediate the third bearing and the second bearing; a bearing support removably and replaceably mounted to the frame, with the frame having an exterior edge proximate the access end of the shaft, with the frame having a gap proximate the access end of the shaft, with the gap extending from the hole in the frame to the exterior edge of the frame and communicating the hole with the exterior edge, with the bearing support spanning the gap when mounted to the frame, with the third bearing attached to the bearing support, wherein when the bearing support is removed from the frame, the third bearing remains in position on the shaft and is void of attachments to the frame, with the gap in the frame being of a size and shape to allow the drive belt to be passed around the access end of the shaft and over the third bearing and into the hole when the bearing support is removed from the frame and while the first, second and third bearings remain in position on the shaft and the first and second bearings remain mounted on the frame, with the gap providing access to the pulley and ease of replacement of the drive belt; and a saw blade mounted on the shaft, with the saw blade engaging the work surface when the frame is in the working position and with the saw blade positioned to prevent engagement with the work surface when the frame is in the transport position, with rotation of the shaft causing rotation of the saw blade.