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US 8,978,530 B2Granted
Cutting apparatus employing a magnet
AssigneeKey Technology, Inc.
InventorsRobert E. Jones, Robert B. Thompson
Life of this patent
Estimating the term…
Abstract
A cutting apparatus is disclosed and which includes a cutter knife which is reciprocally moveable along a path of travel, a track member mounted adjacent to the cutter knife, and which mechanically cooperates with the cutter knife so as to define, at least in part, a first non-cutting position, and the second, cutting position for the cutter knife, and a magnet mounted on the track member and which releasably magnetically restrains the cutter knife when the cutter knife is in either of the first non-cutting position, or the second, cutting position.
Claims27
A cutting apparatus, comprising:
- a cutter knife which is reciprocally moveable from a first non-cutting position, to a second, cutting position;
- a track member mounted adjacent to the cutter knife, and which mechanically cooperates with the cutter knife so as to define, at least in part, the first non-cutting position, and the second, cutting position of the cutter knife;
- and
- a magnet mounted on the track member and which releasably magnetically restrains the cutter knife when the cutter knife is in the first non-cutting position, and the second, cutting position, and wherein the magnet has a main body with opposite ends, and which further has both a diminishing width dimension, and a diminishing magnetic force when measured in a given direction along the main body, and between the opposite ends thereof.
1 more element
A cutting apparatus, comprising:
- a cutter knife supported for reciprocal movement along a path of travel which has opposite ends;
- a source of fluid pressure selectively delivered to the cutter knife to move the cutter knife in a given direction along the path of travel from one end to the other;
- a track member positioned adjacent to, and mechanically cooperating with the cutter knife, and which is effective in defining, at least in part, the reciprocal movement of the cutter knife along the path of travel;
- and
- a magnet mounted on the track member, and which is effective in magnetically attracting and partially restraining the cutter knife when the cutter knife is located at the opposite ends of the reciprocal path of travel.
2 more elements
A cutting apparatus, comprising:
- an axle;
- a circular knife support ring supported for rotation about the axle, and wherein the knife support ring has a peripheral edge, and further experiences centrifugal force when rotated;
- a plurality of cutter knives moveably supported by the knife support ring, and which are individually, radially, reciprocally moveable relative thereto;
- a source of fluid pressure selectively delivered to the respective cutter knives for selectively propelling the individual cutter knives, at least in part, along a path of travel which is radially, outwardly oriented relative to the knife support ring;
- an annular track member mounted on the axle, and located adjacent to the knife support ring, and wherein the annular track member has an outside peripheral edge, and further defines a plurality of tracks which mechanically cooperate with the plurality of cutter knives so as to cause the respective cutter knives to move, at least in part, radially inwardly, and outwardly, relative to the peripheral edge of the knife support ring, and along the path of travel, when the source of fluid pressure propels individual cutter knives radially outwardly relative to the knife support ring, and the circular knife support ring rotates;
- and
- a magnet mounted adjacent to the peripheral edge of the of the annular track member, and which has a magnetic centripetal force which is effective so as to magnetically restrain the movement of the plurality of cutter knives in a radially outward direction relative to the knife support ring, and against the force experienced by the knife support ring, and the respective cutter knives, when the knife support ring is rotated, and wherein the magnetic centripetal force acting on the respective cutter knives is overcome when the source of fluid pressure is applied to the respective cutter knives so as to move the respective cutter knives along the path of travel, and radially outwardly relative to the knife support ring.
4 more elements
Dependencies are inferred from the claim text.