Door equalizer support and handhold
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United States of America Patent
Stats
-
Jul 10, 2012
Grant Date -
Aug 14, 2008
app pub date -
Nov 7, 2007
filing date -
Nov 7, 2006
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A pneumatic door closer with a protective external telescoping cylinder and angled handhold. Such a closer is generally outfitted with a structural tubular support that follows the telescoping and collapsing of the closer's piston and that has sufficient stiffness to limit the stresses imposed on the piston throughout its extension. The support provides a resistance to perpendicular force. Moreover, when the piston is collapsed within the exterior chamber, the support pivots to the exterior chamber with bushing(s) fixed to the end of the support that travel along the length of the exterior column as the closer telescopes or collapses, to permit continued smooth sliding motion throughout the extension stroke.
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