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US 8,166,857 B2Granted
Perforator
AssigneeHewlett-Packard Development Company, L.P.
InventorsWade A. Powell, Scott K. Carter, Jr., Mark McDonnell
Life of this patent
Estimating the term…
Abstract
Various embodiments of a perforator are disclosed.
Claims32
A perforator comprising:
- a first and second rotatable members;
- a first anvil coupled to the first rotatable member, the first anvil having one or more apertures;
- a first blade coupled to the second rotatable member, the first blade having one or more protrusions to perforate a sheet of media;
- a second blade having one or more protrusions to perforate the sheet of media, the second blade coupled to the first rotatable member;
- a second anvil coupled to the second rotatable member;
- a media feed configured to drive the sheet of media between and relative to both the first rotatable member and the second rotatable member;
- and
- a torque source operably coupled to the first rotatable member and the second rotatable member to rotate the first rotatable member and the second rotatable member to move the first blade and the first anvil into and out of engagement with the sheet of media, wherein the media feed and the torque source are configured to cooperate with one another such that the first blade engages the sheet of media against the first anvil at one of a plurality of selectable continuum of locations along the sheet of media.
5 more elements
A perforator comprising:
- a first and second rotatable members;
- a first anvil coupled to the first rotatable member, the first anvil having one or more apertures;
- a first blade coupled to the second rotatable member, the first blade having one or more protrusions to perforate a sheet of media;
- a media feed configured to drive the sheet of media between and relative to both the first rotatable member and the second rotatable member;
- and
- a torque source operably coupled to the first rotatable member and the second rotatable member to rotate the first rotatable member and the second rotatable member to move the first blade and the first anvil into and out of engagement with the sheet of media, wherein the media feed and the torque source are configured to cooperate with one another such that the first blade engages the sheet of media against the first anvil at one of a plurality of selectable continuum of locations along the sheet of media,
- wherein the first anvil has an elastomeric blade-engaging portion and wherein the first rotatable member includes an empty cavity opposite the blade-engaging portion, wherein the first anvil is configured to resiliently deform into the empty cavity to extend into the empty cavity when in engagement with the first blade such that the first anvil converges about the blade.
4 more elements
A perforator comprising:
- a first and second rotatable members;
- a first anvil coupled to the first rotatable member, the first anvil having one or more apertures;
- a first blade coupled to the second rotatable member, the first blade having one or more protrusions to perforate a sheet of media;
- a media feed configured to drive the sheet of media between and relative to both the first rotatable member and the second rotatable member;
- and
- a torque source operably coupled to the first rotatable member and the second rotatable member to rotate the first rotatable member and the second rotatable member to move the first blade and the first anvil into and out of engagement with the sheet of media, wherein the media feed and the torque source are configured to cooperate with one another such that the first blade engages the sheet of media against the first anvil at one of a plurality of selectable continuum of locations along the sheet of media,
- wherein the first rotatable member is configured to rotate about a first axis and has an outermost surface including three substantially planar faces extending along the first axis and wherein the second rotatable member is configured to rotate about a second axis that includes three substantially planar faces extending along the second axis.
4 more elements
A perforator comprising:
- a first and second rotatable members;
- a first anvil coupled to the first rotatable member, the first anvil having one or more apertures;
- a first blade coupled to the second rotatable member, the first blade having one or more protrusions to perforate a sheet of media;
- a media feed configured to drive the sheet of media between and relative to both the first rotatable member and the second rotatable member;
- and
- a torque source operably coupled to the first rotatable member and the second rotatable member to rotate the first rotatable member and the second rotatable member to move the first blade and the first anvil into and out of engagement with the sheet of media, wherein the media feed and the torque source are configured to cooperate with one another such that the first blade engages the sheet of media against the first anvil at one of a plurality of selectable continuum of locations along the sheet of media,
- wherein the first rotatable member is configured to rotate about a first axis and includes a first channel extending along the first axis and configured to slideably receive the first anvil along the first axis and to radially contain the first anvil.
4 more elements
Dependencies are inferred from the claim text.