OVERHEAD DOOR CLOSER
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United States of America Patent
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N/A
Issued Date -
May 14, 2015
app pub date -
Nov 12, 2014
filing date -
Nov 13, 2013
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An overhead door closer comprising including a housing, an output shaft with a cam disc, which shaft is rotatably movable supported in the housing, a link-plate carriage with two rotatably movable pressure rollers supported in the link-plate carriage, wherein the pressure rollers roll on the cam disc, a piston which is linearly guided in the housing, a piston rod which with one end is connected to the link-plate carriage, and with the other end is connected to the piston, and a closer spring, which, on the side of the piston facing the link-plate carriage, abuts at the piston.
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