Metal deforming – With indication of condition or position of work – product,... – Work drawn or extruded through die
Patent
1991-11-29
1992-09-08
Jones, David
Metal deforming
With indication of condition or position of work, product,...
Work drawn or extruded through die
72 34, 72459, 33366, B21D 714
Patent
active
051448238
ABSTRACT:
A removable attachment for a tube bender or for the tube to be bent for predetermining a selected bend angle to which the tube is to be bent prior to the bending operation. In a first embodiment of the device, an audio and/or visual indicator indicates when the desired bend angle is achieved. In a second embodiment of the device, an audio indicator indicates during the bending operation when the desired bend angle is being approached and a second audio/visual indication indicates when the desired bend angle is achieved. In both embodiments an electrical continuity tester is provided.
REFERENCES:
patent: 2932225 (1960-04-01), Gardner
patent: 4325190 (1982-04-01), Duerst
patent: 4425784 (1984-01-01), D'Gerolamo
patent: 4536967 (1985-08-01), Beitzer
patent: 4547972 (1985-10-01), Heidel et al.
patent: 4622837 (1986-11-01), Bergman
Gilliam Frank D.
Jones David
Limpert Johnathan Dean
Smith Robert Gene
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