Door actuator
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United States of America Patent
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Nov 10, 2015
Grant Date -
Dec 18, 2014
app pub date -
Nov 14, 2012
filing date -
Dec 2, 2011
priority date (Note) -
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Abstract
A door operator for operating a door includes a housing, an output shaft with a cam disc, an opening piston guided in the housing, which piston, on a first side, bears against the cam disc, an energy accumulator acting upon the opening piston for storing a closing energy for the door, and a damping piston guided in a cylindrically shaped hollow space of a cylinder element, and which piston, on a second side, bears against the cam disc, wherein the cylinder element is firmly connected to the opening piston.
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