Seal arm latching mechanism for heat sealing apparatus
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United States of America Patent
Stats
-
May 8, 1984
Grant Date -
N/A
app pub date -
Jan 10, 1983
filing date -
Jan 10, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pneumatic-electromagnetic latch is disclosed as applied to bring the sealing jaws of an L-sealer into pressure engagement without impact. An electromagnet mounted on a piston rod of a pneumatic actuator attracts and retains an armature attached to the sealing jaws when the jaws are brought close to the sealing bed. The cylinder of the actuator is attached to the frame and when actuated it draws the sealing jaws into smooth pressure contact with the sealing bed. Upon deenergization of the electromagnet the jaws are released to open for the next sealing cycle and the release of fluid pressure in the actuator extends the piston rod to position for the next operation.
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