Metal deforming – With means to drive tool – Including link-actuated tool support
Reexamination Certificate
2008-07-07
2010-10-12
Jones, David B (Department: 3725)
Metal deforming
With means to drive tool
Including link-actuated tool support
C072S375000, C072S441000, C072S446000, C072S448000, C072S472000, C072S481100
Reexamination Certificate
active
07810368
ABSTRACT:
The invention is a multi-mode hammering machine that operates in a rigid mode, a flexible power hammer mode and a machine press mode to contour, shape and form sheet metal products. In all three modes, a ram is linearly stroked toward and away from a fixed die by a common ram drive assembly that includes a lever drive assembly and a reciprocating lever. The lever drive assembly moves in a rigid non-flexing manner. The reciprocating lever includes a rigid mode and a flexible mode. A conversion pin is used to engage one and simultaneously disengage the other. The lever drive assembly includes a control link that interfaces with a stroke adjustment mechanism. The gap adjustment mechanism is located at the fulcrum of the reciprocating lever. Both stroke length and gap are adjusted independently during the operation while the ram is cycling.
REFERENCES:
patent: 1458667 (1923-06-01), Sustarich
patent: 1485486 (1924-03-01), Depew
patent: 1524195 (1925-01-01), Massey
patent: 7331207 (2008-02-01), Borgwarth
Industrial Press, Inc. Book entitled “Ingenious Mechanism for Designers and Inventors—vol. III, 1951, article entitled Variable-Stroke Mechanism for Toggle Lever Press.”, pp. 227-229.
Dake website printout of “Power Hammer” machine brochure believed published prior to 2006.
Yoder K90 and LK90 Power Hammers metal forming machine brochures believed published prior to 2006.
Pullmax P2, P9, P13, P21 and P201 universal plate cutting and working machine brochures believed published prior to 2006.
Eckhold Kraftformer website printout of “Three machines in one” MultiFormer MF 500 and MF 800 metal shaping, HF 100 hand former and GL 2 planishing hammer machines believed published prior to 2006.
Jones David B
Sokol Jeffrey S.
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