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US 2003/0146524 A1Published application
Plastic random packing element
OwnerHassan S. Niknafsinventor
Life of this patent
Estimating the term…
Abstract
The invention provides a novel improved plastic packing element having the basic shape of a polygon with arches formed around the periphery by deforming the edge area in one direction and an area axially within the edge area to form arches projecting in the opposite direction and providing an axially located aperture. Such packing elements can be conveniently formed using a simple cutting and stamping operation or, more preferably, by an injection molding process.
Claims13
A plastic packing element in the form of a basic plastic sheet located in a first plane and having the form of a polygon with 3 to 6 corners and comprising:
- a first group of spaced peripheral strips between each pair of adjacent corners of the sheet extend in a first direction to form a first set of arched structures with the apices of at least some of the arches in a second plane parallel to the first plane and removed therefrom in the first direction;
- a second group of strips equal in number and parallel to the corresponding strips in the first group but each being displaced radially inwardly from the corresponding strip from the first group, each such strip extending in a second direction which is generally opposite to the first direction to form a second set of arched structures with the apices at least some of the structures in a third plane parallel to the first plane;
- and an axially central aperture formed in the sheet and defined by a generally circular periphery with an axially-located rod connected to the periphery by a plurality of radial struts.
Dependencies are inferred from the claim text.