Metal deforming – By relatively movable offset tool-faces – With tool motion in fixed path
Reexamination Certificate
2005-08-23
2005-08-23
Jones, David B. (Department: 3725)
Metal deforming
By relatively movable offset tool-faces
With tool motion in fixed path
C072S213000, C072S458000, C072S477000
Reexamination Certificate
active
06931908
ABSTRACT:
A tube-bending device including a frame having a reciprocably mounted anvil and a coacting crossbar with tube-restraining blocks, together with a ratchet mechanism for driving the anvil toward the blocks to perform tube-bending operations, wherein the crossbar is reinforced with reinforcing ribs to prevent failure.
REFERENCES:
patent: 1079442 (1913-11-01), Rutledge
patent: 3464254 (1969-09-01), LeBreton
patent: 3822578 (1974-07-01), LeBreton
patent: 4077249 (1978-03-01), Schmitter
patent: 4989441 (1991-02-01), Wagner
Jones David B.
Zickert Lloyd L.
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