Portable rebar bending device and method

Details Portable rebar bending device and method Portable rebar bending device and method

1995-05-18

1997-08-05

Larson, Lowell A.

Metal deforming

By use of roller or roller-like tool-element

Comprising tool movable relative to stationary work-portion...

72219, B21D 702

Patent

active

056531397

ABSTRACT:
A portable pneumatic rebar bending device has a base portion, a pivoting portion, and a pneumatic cylinder connecting and operable to pivot the pivoting portion with respect to the base portion. The axis of pivot includes a radiused wheel having a shallow "V" shaped slot about which the radius of curvature of the rebar is formed. The radiused wheel can be, where necessary, removed from the pivoting members where the required bend is so extreme that the device would otherwise be trapped. A pair of handles facilitates manual positioning and carriage. A weak spring acts to reset the pivoting member with respect to the base member once the pneumatically operated cylinder is de-pressured. The weak spring prevents injury on closure, since the presence of a hand or finger is more that adequate to prevent the force of the spring from acting to close the two members. An adjustment is provided to enable a variety of sizes of rebar to be used with the device of the present invention.

REFERENCES:
patent: 3861186 (1975-01-01), Wigner, Jr.
patent: 4167865 (1979-09-01), Powell

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