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US 2012/0174720 A1Published application
Perforator
AssigneeHewlett-Packard Development Company, L.P.
InventorsWade A. Powell, Scott K. Carter, JR., Mark McDonnell
Life of this patent
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Abstract
Various embodiments of a perforator are disclosed.
Claims20
A method comprising:
- moving a medium between and relative to both a first rotatable member supporting a first structure and a second rotatable member supporting a first blade to selectively position one of a continuum of portions of the medium relative to the first structure and the first blade;
- and
- perforating the medium between the first structure and the first blade.
A method comprising:
- moving a medium between and relative to both a first rotatable member supporting a first anvil and a second rotatable member supporting a first blade to selectively position one of a continuum of portions of the medium relative to the first anvil and the first blade;
- perforating the medium between the first anvil and the first blade, wherein the first rotatable member is coupled to a second blade and wherein the second rotatable member is coupled to a second anvil, the method further comprising:
- rotating the first rotatable member in a clockwise direction while concurrently rotating the second rotatable member in a counterclockwise direction;
- and
- rotating the first rotatable member in the counterclockwise direction while concurrently rotating the second rotatable member in the clockwise direction.
2 more elements
A method comprising:
- moving a medium between and relative to both a first rotatable member supporting a first anvil and a second rotatable member supporting a first blade to selectively position one of a continuum of portions of the medium relative to the first anvil and the first blade;
- driving the medium between and relative to both the first rotatable member and the second rotatable member without any blade and any corresponding structure of either of the first rotatable member or the second rotatable member perforating media therebetween as the media is being driven relative to both the first rotatable member and the second rotatable member such that the first blade may engage media against the first structure at a continuum of locations along the medium;
- and
- perforating the medium between the first anvil and the first blade, wherein the first rotatable member is coupled to a second blade and wherein the second rotatable member is coupled to a second anvil. 1
1 more element
Dependencies are inferred from the claim text.