Follow bar with cam tracks for rocker type conduit bender
OwnerLarry G. Adlemaninventor
Life of this patent
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Abstract
The follow bar of a rocker type conduit bender includes a pair of cam tracks with a series of angular ramp surfaces along their length. The inclination of the ramp surfaces relative to the working surface of the bender shoe is varied inversely with changes in length of the bender lever arm to provide more uniform bending forces on the conduit.
Claims5
In a rocker type conduit or tube bender having a shoe wherein a bending force is transmitted through an axis thereon offset from the axis of shoe rotation by a lever arm distance which varies during bending and having a follow bar movable with rotation of the shoe with the conduit therebetween, the improvement comprising cam means provided on the follow bar and configured to effect changes in bending force on the conduit in relation to changes in lever arm distance to enhance uniformity of bending force on the conduit during rotation of the shoe and consequent bending of the conduit or tube.
In a rocker type conduit or tube bender having a shoe wherein a bending force is transmitted through an axis thereon offset from the axis of shoe rotation by a lever arm distance which varies during bending and having a follow bar movable with rotation of the shoe with the conduit therebetween, the improvement comprising cam means provided on the follow bar and configured to effect changes in bending force on the conduit in inverse relation to changes in lever arm distance to enhance uniformity of bending forces on the conduit during rotation of the shoe and consequent bending of the conduit or tube.
Dependencies are inferred from the claim text.