ADJUSTABLE DOOR CLOSER
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United States of America Patent
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-
Oct 21, 2014
Grant Date -
Nov 13, 2014
app pub date -
May 8, 2013
filing date -
May 8, 2013
priority date (Note) -
Granted
status (Latency Note)
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Abstract
An adjustable door closer has a hollow pedestal with a first and a second chamber as well as an actuating groove. An actuating device is set into the actuating groove. A first piston assembly is set into the first chamber and a second piston assembly set into the second chamber. A partition wall is formed between the first and second chambers. Due to a laterally configured flow resistance unit, the holes to be set into the first and second chambers are reduced to three, including a no connecting hole and first and second backflow bypass holes, all of which are connected only to the second chamber from the partition wall. As such, the flow path structure is simplified compared to the five holes required for typical structures. The adjustable door closer could reduce significantly the manufacturing cost and realize better regulating functions with improved applicability and economic benefits.
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