Chimney cap link

Abstract

The “Chimney Cap Link”, a device that when used will conserve heat in a dwelling. Installed between the stove pipe and the wall connection, it serves to enable one to, in only seconds, install or remove an insulated double wall cap. To be done regularly, without any leakage when wood stove or similar appliance is in use, and done cleanly with ease. Having a sliding lock seal, the prototype is framed using one half (½) inch steel rod and nuts. Rivets and sealant is used to join the one third (⅓) length parallel walls to the two primary pipes. Welding may be a better option or one piece pipe parts. The sliding seal reveals an open gap in the pipe, in order to insert or remove the insulated cap. Therefore, when used, the cap stops heat from escaping out the hole in the wall and prevents cold air from entering the dwelling. Also during the hot summer months, when air conditioners are in use, the insulated cap performs the opposite function, it caps the heat out and prevents the inner cool air from escaping out the hole. When regularly used the “Chimney Cap Link” performs its duty 24 hours a day, and saves on energy 24 hours per day.

I claim: 
     
         1 . A frame mounted slidable pipe link assembly, creating an opening and access inside of a chimney flue pipe for either visual inspection of the flue interior, or clean out access of the chimney, when installed at the chimney base location, inside an exterior wall of a building, or also for access enabling the insertion of an insulated flue cap ( 3 ) directly into the exterior wall hole at the base of the chimney, comprising:
 (a) a rigid frame ( 25 ), made of three metal rods ( 24 ), bent in from the ends, and attached to and linking two standard diameter, pipe lengths ( 2 ), ( 4 ) in which the ends are facing one another and lined up end to end, leaving an open space or gap in between, furthermore a frame ( 25 ) mounted slidable pipe link assembly comprising a sliding sleeve ( 1 ) slid over a flue pipe part ( 2 ) of standard size, this part ( 1 ) also having attached a double shorter wall ( 9 ) on its sleeve end ( 1 ) to be slid left or right opening or closing an open gap that exist within the link assembly in between both pipe ends ( 2 ), ( 4 ), said link assembly device being of a pre-determined size, said link device having pipe lengths of pre-determined lengths and diameters to conform and link to standard flue sizes, made to slide, revealing or covering a chosen pre-determined size gap or entry way into a flue pipe or conduit, link assembly device performs perfectly when installed at any slope, horizontal, vertical or other;   (b) a sliding sleeve ( 1 ) seal contained within the link assembly comprising of an additional two twin standard flue pipe lengths ( 9 ), being shorter in length than pipe ( 2 ) and having different diameters, such that one fits down and over a standard flue pipe ( 2 ) size and the other of smaller diameter fits up and inside of a sliding sleeve ( 1 ), leaving a space in between the now parallel walls ( 9 ), this gap in between these walls is possible because of the insertion of a metal spacer ( 22 ) serving two functions, the first being to enable the gap for the seal chamber, and also to serve as a concentric abutment surface, within the seal, where the shorter pipe length walls ( 9 ) interlock and abut the surface of the spacer ( 22 ) inside of the seal chamber, when the seal is pulled tightly together, these new shorter length pipes ( 9 ) are attached, firstly, the one of greater diameter is slid down and over the lower pipe part ( 2 ) of the link assembly, flush to the top end, becoming the first double wall section of the seal, the other of smaller diameter is slid up and in to the bottom end of a cylindrical metal sleeve ( 1 ) slid in flush to the bottom end, thus becoming the second half double wall section of the sliding sleeve seal, these two parts, when slid one into the other in the manner in which these new shorter walls ( 9 ) interlock, using a predetermined distance measure, when pulled tightly together square to the spacers, these two parts joined, form a four wall chamber with an inner two points of contact seal, where the shorter wall ( 9 ) ends abut squarely against the spacers ( 22 ) and effectively create the four wall chamber seal, thus sealing the inner concentric slit that exist in the flue pipe of the link assembly caused by having a sliding sleeve ( 1 ), and this unique seal with this simultaneous interlocking feature, using predetermined lengths and distance is what allows the link to exist, the size of the open gap desired will determine the length of the link, logically the bigger the gap the longer the seal;   (c) a inner shield ( 5 ) a cylindrical slightly conical metal tube ( 5 ) attached concentrically to the inner top end of the sleeve ( 1 ) when slid down inside the sleeve ( 1 ) flush to the top where the spacer ( 22 ) is located;   (d) a short reducing diameter pipe part ( 23 ) attached also to the top end of the sleeve ( 1 ) where the shield ( 5 ) is attached but attached to the outer top sleeve ( 1 ) wall, to serve to step down from the oversized sleeve ( 1 ) diameter down to the standard diameter;   (e) a two thin metal leaf type flexible snap in locks ( 8 ) attached to and within the lower frame area, sloped inward and slightly abutting the outer sleeve ( 1 ) wall or abutting directly under the sleeve ( 1 ) wall overhang when seal is locked into place;   (f) two flat thin metal handles ( 26 ) attached to outer sleeve ( 1 ) wall for grip.