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US 6,185,825 B1Granted
Cable and wire cutters
AssigneeKnight's Armament Company
InventorDouglas D. Olson
Life of this patent
Estimating the term…
Abstract
Cable and wire cutters of new design have an outside cutter member containing an arcuate cavity within which an inside cylinderical cutter member rotates about a common pivot axis so separate cutting slots in the outside and inside cutter members cross during the cutting operation within the circumference of the inside cutter thereby remarkably improving the mechanical advantage in these new cutters as compared to the prior art because cutting of the work piece occurs closer to the common pivot axis of the cutting slots than has been possible with prior known cable and wire cutters. A variety of specific embodiments of the new cutter design are disclosed.
Claims13
A cable and wire cutter comprising:
- a first cutter member and a second cutter member,
- force means to rotate said first cutter member relative to said second cutter member about a pivot axis to cut a work piece,
- said first cutter member comprising a planar web defined by a web inside surface and a web outside surface,
- a perimeter wall having an outer wall surface and an inner wall surface upstanding from said web inside surface,
- said inner wall surface and said web inside surface defining an oval chamber having a semicylindrical end portion and an opposed arcuate end portion,
- a semicircular ledge that extends laterally from said inner wall surface, defining with said inner wall surface and said web inside surface, a semi-cylindrical cavity of a first radius in said semi-cylindrical end portion, one end of said first radius being located at said pivot axis,
- a first slot extending through both said perimeter wall and said planar web providing an entrance into said oval chamber for said work piece and defining in said planar web a cutting edge and an opposed edge that both extend from said perimeter wall toward said pivot axis,
- said second cutter member comprising a tiered cylinder defined by a base tier having a second radius slightly shorter than said first radius and an integral upper tier of third radius shorter than said second radius, one end of each said second radius and said third radius being located at said pivot axis,
- a second slot extending through both said base tier and said upper tier providing an entrance extending toward said pivot axis into said tiered cylinder for said work piece,
- said base tier of said second cutter member being rotatably positioned in said semicylinderical cavity of said first cutter member permitting said force means to rotate said first slot across said second slot to cut said work piece.
7 more elements
A cable and wire cutter comprising:
- a first cutter member and a second cutter member,
- force means to rotate said first cutter member relative to said second cutter member about a common pivot axis to cut a work piece,
- said first cutter member containing an arcuate cavity defined by a first periphery that is at least partially circular having a first radius, one end of said first radius being at said pivot axis,
- a first slot, sized to receive said work piece, in said first cutter member that extends through said first periphery into said arcuate cavity radially toward said pivot axis,
- said second cutter member comprising a cylindrical part defined by a circular second periphery having a second radius nearly equal to said first radius, one end of said second radius being at said pivot axis, ,
- a second slot, sized to receive said work piece, in said cylindrical part that extends through said second periphery radially toward said pivot axis, and
- means retaining said cylindrical part in said arcuate cavity for rotation about said pivot axis by said force means to pass said first slot across said second slot to cut said work piece.
4 more elements
A cable and wire cutter comprising:
- a first cutter member,
- a second cutter member comprising a circular periphery defined by a given radius and a given inside end, said circular periphery being greater than the periphery of cable or wire to be cut by said cutter,
- said first cutter member comprising a partially circular cavity defined by another radius slightly longer than said given radius and another inside end,
- said given inside end being coincident with said another inside end whereby said partially circular cavity of said first cutter member serves as the pivot element for said second cutter member.
1 more element
Dependencies are inferred from the claim text.