Universal Energy Accumulator
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United States of America Patent
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Issued Date -
May 14, 2015
app pub date -
Nov 11, 2014
filing date -
Nov 11, 2013
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A door operator, including a housing, a drive element for storing closing and opening energy for a door leaf, and a drive unit, including at least one piston, which unit can be coupled to the door leaf, where the drive element comprises at least one elastically deformable element, which is disposed on a push rod which is in operative connection with the piston.
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