Can body maker with magnetic ram bearing and domer
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United States of America Patent
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Oct 13, 1992
Issued Date -
N/A
app pub date -
Jul 2, 1991
filing date -
Sep 7, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A can body maker apparatus of the type having an axially reciprocal ram member and an axially reciprocal redraw carriage comprising a ram position sensing assembly for sensing the position of the ram member and for generating a ram position signal in response thereto; an electromagnetic bearing assembly for frictionlessly radially supporting and aligning one end of the ram member with a predetermined ram displacement path; an electromagnetic redraw carriage actuator for applying magnetic force to the redraw carriage for reciprocating the redraw carriage; and a control assembly for selectively energizing and deenergizing electromagnets in the electromagnetic bearing assembly and the electromagnetic redraw assembly in response to the ram position signal, also, an electromagnetic doming apparatus is provided for shaping the bottom portion of the can body.
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