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US 5,056,388 AGranted
Blind cutting machine
AssigneeHunter Douglas International N.V.
InventorsThomas J. Dekker, Joseph Chua
Life of this patent
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AssigneeHunter Douglas International N.V.
InventorsThomas J. Dekker, Joseph Chua
Estimating the term…
A cutting member and machine for cutting elongate members is disclosed. The cutting member comprises a body having a cutting edge defining a cavity such that the cutting edge contacts a surface to be cut at at least two points. The cutting machine comprises the cutting member, a weight pivotally connected to the cutting member to define a arm-weight assembly, and a driven member defining a central opening, wherein the arm-weight assembly is pivotally attached to the driven member so as to drive the cutting member in a circular path around the central opening, the cutting edge of the cutting member being biased inwardly towards the central opening by the weight and the resultant centrifugal force. The cutting edge of the cutting member may comprise a first cutting surface having a razor like leading edge and a second cutting surface which is positioned parallel to and adjacent at least part of the first cutting surface, the second cutting surface defining a surface to remove large amounts of material, such as serrated saw teeth or an abrasive medium.
A cutting apparatus for cutting rolled or collapsed window coverings including a cutting member, means for rotating said cutting member about an axis, centrifugal force means for biasing the cutting member toward the axis in response to said rotating, a support structure, and a clamping member for clamping the window coverings against the support structure, wherein rotation of said cutting member biases said member toward said axis to cut a window covering lying along said axis, said cutting member comprising a body having at least one cutting edge, wherein said at least one cutting edge defines a concave edge of said body having an opening of sufficient size to receive and partially surround the window covering to be cut, said edge being adapted to contact a surface of the collapsed window covering at least at two points, said clamping member having a first shorter projection for engaging window coverings having noncircular cross sections and a second longer projection for engaging window coverings having circular cross sections.
A cutting machine for cutting elongated objects having parts of their cross-section formed of different materials, comprising:
An apparatus for cutting, comprising:
Dependencies are inferred from the claim text.