Compound-angle blade for stripping insulated electrical conductors
AssigneeMechtrix Corporation
InventorJohn D. Butler
Life of this patent
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AssigneeMechtrix Corporation
InventorJohn D. Butler
Estimating the term…
A blade for cutting and stripping insulation from insulated electrical conductors has two blade angles leading to the cutting edge. The first angle is a gathering angle which opens onto the leading surface of the blade and provides a wide opening for gathering offset insulated conductors. The gathering angle converges toward the interior of the blade and intersects the second blade angle, which also converges toward the blade interior. The second blade angle, the cutting angle, terminates in a radius cutting edge adapted to slice the insulation. The blade walls defining the cutting angle are tangent to the cutting edge radius. The cutting angle is minimized so that the radius cutting edge provides a maximum circumferential contact with the conductor. The blade may include a stop for positively controlling the cutting stroke to avoid nicking the conductor.
A blade for cutting and stripping insulation from insulated electrical conductors comprising a member formed as a rectangular parallelopiped having first and second faces and surfaces connecting the faces, one of the surfaces being formed with an opening extending between the faces and extending at a compound angle toward the interior of the member, the angled opening being defined by a first pair of walls converging at a first angle toward the interior of the member and a second pair of walls intersecting the first pair of walls and converging at a second non-parallel angle greater than 0 degrees but less than 54 degrees toward the interior of the member to accommodate different size conductors, the opening terminating in a radius cutting edge adapted to partially encircle a round conductor to cut the insulation, the second pair of angled walls being tangent to the cutting edge,
An apparatus for cutting and stripping insulation from various sizes of insulated electrical conductors, a pair of blades mounted for reciprocation toward and away from each other, each blade being formed as a rectangular parallelopiped having first and second faces and surfaces connecting the faces, one of the surfaces being formed with an opening extending between the faces for receiving an insulated electrical conductor therethrough and extending at a compound angle toward the interior of the blade, the angled opening being defined by a first pair of walls converging at a first angle toward the interior of the blade and a second pair of walls intersecting the first pair of walls and converting at a non-parallel second angle of less than 54 degrees toward the interior of the blade and being tangent to and terminating in a radius cutting edge for cutting the insulation,
The apparatus of claim 12 wherein the first angle of each cutting blade is calculated according to the formula ##EQU8## where all the angles are given in degrees and, ##EQU9## F=(overall length of blade--distance from centerline of conductor to bottom of blade
Dependencies are inferred from the claim text.