DOUBLE WALL INSULATED CAP

CAPUCHON ISOLE A DOUBLE PAROI

English Abstract

The "Double Wall Insulated Cap", a device that when used will conserve heat in a dwelling. For use mostly to plug a flue pipe opening situated at the exterior wall of a dwelling. By plugging that particular hole usually situated, leading directly out to a chimney bottom with an insulated double walled cap, the insulated cap stops heat from escaping out the hole in the wall and prevents cold air from entering the dwelling, when the heating unit is not in use. It is also effective during hot summer months, when air conditionners are in use, when used it caps hot air out and cold air in. The "Double Wall Insulated Cap" uniquely because of its double wall nature fits to all standard sized flue openings and also at any angle.

French Abstract

Le capuchon isolé à double paroi est un dispositif qui, lorsquutilisé, conservera la chaleur dans une habitation. Il sert principalement à boucher un tuyau d'évacuation situé sur la paroi extérieure dune habitation. En bouchant ce trou particulier à lendroit habituel, menant directement au bas dune cheminée, au moyen dun capuchon isolé à double paroi, le capuchon isolé empêche la chaleur de séchapper du trou dans la paroi et empêche lair froid dentrer dans lhabitation, lorsque lunité de chauffage nest pas en fonction. Il également efficace pendant les chauds mois dété, lorsque les climatiseurs sont en fonction, lorsquutilisé il envoie lair chaud à l'extérieur et laisse entrer lair froid. Le capuchon isolé à double paroi est unique parce que la nature de sa double paroi s'adapte à toutes les ouvertures de conduit de cheminée et également à tous les angles.

Claims

7
Various features of the invention are set forth in the following claim;
Claim 1: An insulation flue cap comprising:
a cylindrical metal cap, open at a first end and closed at the second end;
a center fastener;
a cover plate;
an inner metal cylinder having a smaller diameter than the cylindrical metal
cap and
located concentrically therein, the inner metal cylinder having a first end
and a second
end, the second end abutting the inside of the cylindrical metal cap;
and fire retardant insulation, the insulation located inside the inner metal
cylinder;
there being an open channel between the cylindrical metal cap and the inner
metal
cylinder for accepting an open flue pipe end;
the cover plate fittingly covering the first end of the inner metal cylinder
and covering the
insulation without covering the open channel, the center fastener securing the
cover plate
and the inner metal cylinder to the cylindrical metal cap.
Claim 2: The double wall insulated cap of claim 1, further comprising a hooked
metal handle
attached at the center bolt at the closed end of the cylindrical metal cap and
protruding
outward from the center of the cylindrical metal cap.

Description

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DOUBLE WALL INSULATED CAP
FIELD OF THE INVENTION
100011 The present invention generally relates to a wood or combustion stove
or furnace
installation, and more particularly, to a double wall insulated chimney flue
pipe, cap, that when
used, saves energy both summer and winter, and entails a double wall feature
which accepts all
standard sized flue openings.
BACKGROUND OF THE INVENTION
100021 Combustion heating units, such as furnaces or stoves, whether utilizing
wood or other
forms of fuel to generate heat, all require a smoke evacuation conduit, a flue
pipe leading to a
chimney, is common place.
It is such that these are popular devices for heating in residential and
commercial buildings.
100031 When such a unit is not in use, however, the opening within the unit,
connected to a flue
leading outside forms a passage, through which heated air or cooled air can
escape from the
interior of the building.
A Double Wall Insulated Cap installed anywhere along the flue but most
effectively at the
exterior wall opening to the chimney bottom would be so much more effective
than just leaving
that open hole.

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[0004] Few innovations for a quick and easily used flue plug or cap have been
previously put
forth in prior art. For example: US1771956A patent to Gleiden 29 July 1930 (29-
07-1930)
discloses a device of preparing for a flue stopper or plug, for closing stove
pipe openings of
chimneys, the primary object of the invention being to provide a device of
this character which
will insure a close fit so that smoke and soot cannot pass into the room. Note
no consideration is
given with regards to heat retention in the room.
Also this device does not fit into a regular chimney flue opening without
modifying the wall
opening to accept the device.
Therefore the outer section of the flue stopper is to be permanently affixed.
Also this is a two
part device, that is the outer concrete section is made to accept the heavy
concrete flue stopper
proper, sliding it in or out.
"A flue stopper comprising an inner tapered tubular member to be secured
within a chimney
opening, a removable body portion, an extension forming part of the body
portion to fit within
the outer section", depicts clearly a two part device, with one of two, heavy
parts, being affixed
into the wall. Note wall installation is required.
Also is US84385 A patent to Weller 12 February 1907 (12-02-1907) which
discloses a device
"to provide an improved flue-stop which will form an absolute soot and fire
proof closure for the
flue." "To this end the invention comprises, essentially, a cover-plate
fitting over the end of the
flue, a peculiarly constructed clamping member fitting within the flue and
held spaced from the
cover-plate, and a clamping bolt passing through the cover-plate and
cooperating with the
clamping member," with an end nut.
Please note this device has no insulation value, there are not even walls to
it. Although, it
provides for a tight fit, when tightened into place, there is no core body of
insulation present in

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order to prevent heat loss. And because there are no side walls to contain
insulation, it cannot be
added without significant change to the device.
This device has a center clamping bolt which passes through it and holds it
all together. This bolt
also serves the function of being the puller bolt, that when turned pulls the
clamping member
causing expansion within. This devices center bolt has to be turned or screwed
with a
screwdriver to tighten it in place or to untighten and remove it.
[0005] Therefore, a here to for unaddressed need still exists in the art to
address the
aforementioned deficiencies and inadequacies.
SUMMARY OF THE INVENTION
[0006] In one aspect the present invention relates to a stove or combustion
unit flue pipe cap or
plug device, to be installed over a flue pipe open end, when the combustion
unit is not in use. In
one embodiment, the "Double Wall Insulated Cap" device includes a hooked style
metal handle
for hanging and storage purposes. It also embodies an inner concentric metal
wall cavity or core,
containing two and one half (2 Y2) inches of fire resistant insulation, and
capped with a
concentric metal cover plate. A space or gap in between the core and the outer
cap wall creates a
channel way, where the metal open flue pipe end, slides in and sort of wedges
in and seals the
connection.
[0007] In one embodiment the "Double Wall Insulated Cap" includes, one
standard size metal,
concentric cylindrical unit capped at one end, in other words a regularly sold
chimney cap.

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Attached is a hooked metal handle protruding outward from the center. Attached
within, is
another concentric cylindrical core wall part, of a slightly, smaller
diameter, using rivets to
secure it inside the cap. Two and one half (2 1/2) inches of fire resistant
insulation is slid into the
core and a concentric end plate caps the core part of the double wall
insulated cap.
A hole is drilled through the center of both end plates allowing for a bolt to
be inserted through
the center of the concentric cylindrical unit, end to end, attaching and
tightening all the depicted
parts together by tightening down a few nuts present, all materials used
consist of high
temperature and low rust endurance metals.
[0008] These and other aspects of the present invention will become apparent
from the following
description of the preferred embodiment taken in conjunction with the
following drawings,
although variations and modification there in may be affected without
departing from the scope
of the novel concepts of the disclosure.
BRIEF DESCRIPTION OF THE DRAWINGS
[0009] The accompanying drawings illustrate one or more embodiments of the
invention and,
together with the written description serve to explain the principle of the
invention. Whenever
possible the same reference numbers are used throughout the drawings to refer
to the same or
like elements of an embodiment, and where in:
[0010] FIG. 1 shows a side view and a front view of a double wall insulated
cap.

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[0011] FIG. 2 shows a sectional, part by part representation of the double
wall insulated cap.
DETAILED DESCRIPTION OF THE INVENTION
[0012] The present invention is more particularly described in the following
examples that are
intended as illustrative only. Since numerous modifications and variations
there in will be
apparent to those skilled in the art. Various embodiments of the invention are
now described in
detail. Referring to the drawings, like numbers indicate like parts throughout
the views. As used
in the description herein and throughout the claim that follows. The meaning
of "a", "an", and
"the", includes plural reference unless the context clearly dictates
otherwise. Also as used in the
description herein and throughout the claim that follow, the meaning of "in",
includes "in" and
"on" unless the context clearly dictates otherwise. Also, in the construction
of the invention, all
parts are of heat resistant material and are attached by way of either rivets
and / or center bolt
and nuts.
[0013] The description shall be made as to the embodiments of the present
invention in
conjunction with the accompanying drawings in FIG. 1 ¨ 2. In accordance with
the purposes of
this invention, as embodied and broadly described herein, this invention, in
one aspect relates to
a combustion stove or furnace flue pipe opening cap or plug device. It
includes and consists of
the use of a regular popular standard metal chimney flue cap (18) or a similar
cylinder, a hooked
metal handle (12) is attached at the center of the cap and protruding outward
from the center. The
hooked metal handle (12) is attached to a long center bolt (21), which is
inserted through the unit

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at the center end to end and slightly protruding out at the other end to
accept a tightening nut
(13).
An inner concentric metal cylinder (16) is fitted within the flue cap (18),
being of smaller
diameter than the flue cap (18) it forms the core body walls in which fire
retardant insulation
(15) is inserted. This metal cylinder (16) enables the double wall featured
characteristic of the
double wall insulated cap, and provides a channel gap of air in between this
inner metal cylinder
(16) and the regular flue cap (18) which in turn enables the opposing flue
connection end, to
slide in enveloping and seals the connection wall.
A concentric cover plate (14) is fitted on the center bolt (21) over the metal
cylinder (16), only
covering the insulation (15) but revealing the surrounding gap channel in
between the double
walls, which accepts the insertion of the opposing flue pipe end. Fasteners
(17), a lock washer
(19) and a flat washer (20) are also present and depicted.
[0014] The embodiments were chosen and described in order to explain the
principles of the
invention and their practical application so as to enable others skilled
embodiments and with
various modifications as are suited to the particular use contemplated.
Alternative embodiments
will become apparent to those skilled in the art to which the present
invention pertains without
departing from its scope. Accordingly the scope of the present invention is
defined by the
intended claim rather than the foregoing description and the exemplary
embodiments described
therein.

Representative Drawing