Title: High energy rate counterblow forming machine

Abstract: A high energy rate counterblow forming machine having opposing independently movable coaxial rams movable within pressure chambers containing a compressible working fluid for impelling the rams toward one another at high velocity from retracted cocked positions, through working strokes, into forming impact with work parts held in a bolster located between the rams. Operatively connected to the rams are power activated ram retractor means for retracting the rams to cocked position and thereby compressing the ram working fluid. The rams are held in their cocked positions by latches which are releasable in unison to release the rams for movement in unison through their working strokes to form the work parts without unbalanced impact loads on the machine. One described forming machine is adjustable to accommodate work parts of widely varying sizes.

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Inventors: Murek, Josef K. (San Diego, CA, US)

Application Number: 499569
Filing Date: 1974-08-22
Publication_date: 1976-03-09
Assignee:
Primary Class(es): 72/354.6 72/407
Other Classes:
US Patent Ref:

422557	Mar, 1890	Wellman	72/407.
2532397	Dec, 1950	Evans et al.	72/407.
3404555	Oct, 1968	Murek	72/445.
3488990	Jan, 1970	Brown	72/407.

Other Refs:
Primary Examiner: Larson, Lowell A.
Assistant Examiner:
Attorney: Brown; Boniard I.