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US 6,058,820 AGranted
Rod cutter
AssigneeBeere Precision Medical Instruments, Inc.
InventorJames A. Rinner
Life of this patent
Estimating the term…
Abstract
A rod cutter having two force-applying members pivotally attached together. A cutter is pivotally mounted on each of the members in a mechanical advantage arrangement. The cutters both have extending ends which are pivotally connected together and have rod cutting edges thereon, all for force-advantage cutting.
Claims21
A rod cutter comprising
- a base,
- a handle pivotally mounted on said base and having a pivot axis,
- a pair of cutters with each thereof having a first end and a second end oppositely disposed to each other and with said cutters being pivotally pinned together at said first ends thereof and with said cutters each having a hole therethrough and with said holes being alignable with each other in a first pivoted position of said cutters for reception of a rod to be cut,
- said cutters each having a cutter pivot axis at said second ends of said cutters and are respectively pivotally mounted on said base and said handle at said cutter axes for pivoting said cutters to a second pivoted position which is that of non-alignment of said holes upon pivoting of said handle, and thereby cut a rod which is disposed in said holes when said holes are aligned,
- the pivot axis of said handle and the cutter pivot axis of said cutter which is pivotally mounted on said base are disposed to be offset from each other to thereby provide a mechanical force-advantage in the pivoting of said handle in the cutting of the rod, and
- said cutter pivot axes of the pivot mounting of said cutters respectively on said base and on said handle are disposed in co-axial alignment when said cutters are in said first pivoted position.
3 more elements
A rod cutter comprising
- a pair of force-applying members pivotally attached together on a main pivot axis extending therethrough,
- a pair of cutters with each having a respective cutter pivot axis axis and being respectively pivotally mounted on said members in pivot mountings at said respective pivot axis in an arrangement of a mechanical force-advantage relative to said main pivot axis of said members and with said cutters extending from their respective said cutter pivot axis in an extending end,
- said respective cutter pivot axis being in co-axial alignment for reception of a be cut,
- said extending ends of said cutters being pivotally connected together in a pivot connection, and
- said cutters having rod-cutting edges for cutting the rod upon pivoting of said cutters about said pivot mountings and said pivot connection.
2 more elements
A rod cutter for use on a table top comprising
- a base for sitting on a table top,
- a handle pivotally mounted on said base,
- two rod cutters consisting of a first rod cutter and a second rod cutter and with said first rod cutter pivotally mounted on said base on a first pivot axis and with said cutters pivotally connected to each other on a second pivot axis offset from said first pivot axis in an arrangement to pivot said cutters relative to each other in response to the pivoting of said handle,
- said cutters being identical to each other and having holes therein which align between said cutters for receiving a rod in said aligned holes and being arranged for pivoting said cutters to move said holes out of alignment with each other and thereby cut said rod disposed in said holes,
- said handle is pivotally mounted on said base at a fixed mounting location offset from said first pivot axis and said second cutter is pivotally mounted on said handle at said first pivot axis, and
- said offset between said fixed mounting and said first pivot axis is approximately one-third the offset from said fixed mounting and said second pivot axis at the connection between said cutters.
3 more elements
A rod cutter comprising
- a pair of force-applying members pivotally attached together on a main pivot axis extending through said members,
- each of said members having an additional pivot axis which is in addition to said main pivot axis and which is disposed parallel to and offset from said main pivot axis in a fixed radial distance therefrom,
- a pair of cutters with each one thereof being pivotally mounted on a respective one of said members at said additional pivot axis,
- each said additional pivot axis being in co-axial alignment for reception of a rod to be cut,
- each of said cutters extending from the respective said additional pivot axis and along a plane perpendicular thereto in both an extending portion and an extending end extending beyond said portion,
- each said extending end of said cutters being pivotally connected with each other in a pivot connection, and
- said cutters having rod-cutting edges on each said extending portion and adjacent said pivot connection and axially offset therefrom to only one side thereof for cutting the rod upon pivoting of said members about said main pivot axis and thereby pivoting said cutters about a respective said additional pivot axis.
4 more elements
Dependencies are inferred from the claim text.