Multi-layer removable duct liners
OwnerSarkis Khanzadianinventor
Life of this patent
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Abstract
An apparatus comprising a multi-layer duct liner which can be inserted into existing duct systems such as HVAC system ducts. In facilities where micro-organisms are a concern, the linings may be chemically treated. When it is time to clean the ducts, the innermost lining is removed by detaching it from the remaining layers and removing it from the system.
Claims16
A multi-layer duct liner, comprising:
- a plurality of duct liners with outer transverse dimensions of said plurality of duct liners being less than the inner transverse dimension of a host duct system, wherein said plurality of said duct liners are nested within each other from an innermost position to an outermost position, said plurality of duct liners being adapted to be removed singularly in order from said innermost position.
The multi-layer duct liner of claim of 7 claim, wherein said plurality of retaining loops are attached to said plurality of duct liners by folding back a portion of said proximal end and said distal end of each of said plurality of duct liners, cutting a series of notches in said proximal end and distal end of each of said plurality of duct liners, placing one of said plurality of retaining loops under each folded portion of said proximal end and said distal end of each of said plurality of duct liners, and affixing each said folded portion of said proximal end and said distal end of each of said plurality of duct liners to the non-folded portion of said proximal end and said distal end of each of said plurality of duct liners such that each of said retaining loops are visible through said notches cut in said proximal end and distal end of each of said plurality of duct liners.
A multi-layer duct liner, comprising:
- a plurality of duct liners nested within each other from an innermost position to an outermost position;
- a plurality of pull leads wherein each one of said plurality of pull leads is attached to one of said plurality of duct liners, whereby the innermost duct liner of said plurality of duct liners may be removed from a host duct system by pulling on said pull lead attached to said innermost duct liner.
Dependencies are inferred from the claim text.