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US 4,289,054 AGranted
Circular saw with means for opening up the cut slit
AssigneeRolf Peddinghaus
InventorsPaul Pieper, Walter Cordier
Life of this patent
Estimating the term…
Abstract
A cutting tool arrangement for performing the process of opening up the slit cut in the workpiece by circular saws before the saw is retracted to facilitate removal of the saw. The workpiece being severed is moved perpendicular to the cutting plane as is the saw blade to accomplish the desired result.
Claims12
An improved cutting tool arrangement for cutting a workpiece comprising:
- a movable saw blade,
- drive means for moving said saw blade,
- arm means for supporting said saw blade and said drive means and for effecting transverse movement of the saw blade relative to the workpiece to cut the workpiece into two portions and for effecting retraction of the saw blade relative to the workpiece,
- means for effecting movement of one of said workpiece portions away from the other workpiece portion,
- displacement means for displacing said arm means laterally of said transverse movement and for moving said saw blade away from the other workpiece portion, and
- sequencing means for activating said displacement means after said one portion has moved away from said other portion, whereby said arm means are displaced before said saw blade is retracted to reduce contact of said saw blade with the other workpiece portion during retraction.
3 more elements
An improved cutting tool arrangement for cutting a workpiece comprising:
- a rotatable circular saw blade,
- drive means for rotating said blade,
- swivel arm means for supporting said saw blade and said drive means for pivoting movement about a pivot axis parallel to the axis of rotation of said saw blade, said arm means being pivotal for effecting cutting of said workpiece into two portions by said saw blade and for retracting said saw blade from said workpiece,
- clamp means for gripping one of said portions and for moving said one portion away from said other portion, and
- displacement means for displacing said swivel arm means axially of said pivot axis and away from said other portion after said one portion is moved and prior to said swivel arm means retracting said saw blade from said workpiece.
2 more elements
Dependencies are inferred from the claim text.