Scissor-type shear, especially a cable cutter
First Claim
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1. A shear-type cutting tool, especially a cable cutter, comprising:
- a housing;
an actuator shiftable in said housing;
a pair of blades connected to said housing and defining a pivot axis for at least one of said blades with said blades lying against one another and having cutting edges performing a shearing action upon angular displacement of said one of said blades about said axis whereupon motion of at least one cutting edge defines a cutting plane substantially transverse to said pivot axis;
means operatively connecting said actuator to said one of said blades for displacing same; and
a mechanism responsive to the operation of said actuator for applying a pressing force to said blades generally in the direction of said axis and dimensioned in accordance with cutting resistance encountered by said blades while relieving said pressing force upon opening of said blades.
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Abstract
A shear or like scissor-type tool, especially an electric cable cutter, having two blades at least one of which is movable and a pivot about which this blade moves in a scissor-type action. The device is provided with a mechanism for increasing the pressing force at the blade pivot in response to the instantaneous cutting resistance with this pressing force on the blades being relieved upon or prior to opening of the cutter.
27 Citations
20 Claims
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1. A shear-type cutting tool, especially a cable cutter, comprising:
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a housing; an actuator shiftable in said housing; a pair of blades connected to said housing and defining a pivot axis for at least one of said blades with said blades lying against one another and having cutting edges performing a shearing action upon angular displacement of said one of said blades about said axis whereupon motion of at least one cutting edge defines a cutting plane substantially transverse to said pivot axis; means operatively connecting said actuator to said one of said blades for displacing same; and a mechanism responsive to the operation of said actuator for applying a pressing force to said blades generally in the direction of said axis and dimensioned in accordance with cutting resistance encountered by said blades while relieving said pressing force upon opening of said blades. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification