U.S. patent application number 10/854383 was filed with the patent office on 2005-03-24 for chimney cover with extended plinth and deflector.
Invention is credited to Issod, Craig S..
Application Number | 20050064806 10/854383 |
Document ID | / |
Family ID | 34316697 |
Filed Date | 2005-03-24 |
United States Patent
Application |
20050064806 |
Kind Code |
A1 |
Issod, Craig S. |
March 24, 2005 |
Chimney cover with extended plinth and deflector
Abstract
Improved extended chimney cover for installation on a masonry
chimney. The Extended Plinth (106) is substantially elongated
vertically to allow termination at a varied level from adjacent
flues. Above Extended Plinth (106) is a Screen or Open area (108)
which allows for flue gas exhaust. A solid vertical Deflector (110)
can optionally be installed along one face of the Screen or Open
area to further protect adjacent flues from effects of the flue
gases.
Inventors: |
Issod, Craig S.; (Medford,
NJ) |
Correspondence
Address: |
Craig S. Issod
8 Golden Circle
Southampton
MA
01073
US
|
Family ID: |
34316697 |
Appl. No.: |
10/854383 |
Filed: |
May 26, 2004 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
60504783 |
Sep 22, 2003 |
|
|
|
Current U.S.
Class: |
454/12 |
Current CPC
Class: |
F23J 13/08 20130101 |
Class at
Publication: |
454/012 |
International
Class: |
F23J 013/08 |
Claims
What is claimed is:
1. A chimney cover for reducing smoke crossover to and from
adjacent flues comprising: means for extending the effective
vertical termination height of the flue; and means for deflecting
exhaust gases away from adjacent flues; and means for mounting and
sealing to flue tile or existing masonry; and means for exhausting
the flue gases to the atmosphere.
2. The chimney cover in accordance with claim 1, wherein said means
for extending the vertical termination height of the flue comprises
a fixed or telescoping vertically extended plinth.
3. The chimney cover in accordance with claim 1, wherein said means
to deflect the exhaust gases away from adjacent flues comprises a
vertical deflector.
4. The chimney cover as recited in claim 1, further comprising: a
seal gasket, for tight seal of chimney cover mount to the flue
tile.
Description
CROSS REFERENCE TO RELATED PUBLICATIONS
[0001] This application claims benefit to U.S. Provisional
Application Ser. No. 60/504,783, filed on Sep. 22, 2003, which is
incorporated herein by reference.
FIELD OF THE INVENTION
[0002] This invention relates to sheet metal chimney caps and
covers for masonry flue tiles, specifically to caps and covers
which are used to cover adjacent clay flue tiles contained in a
single masonry structure.
BACKGROUND OF THE INVENTION
[0003] Masonry chimneys with clay flue liners serve to remove
noxious flue gases from furnaces, fireplaces and other sources of
combustion inside a building. It is quite common for a building to
contain more than one such source of combustion, such as multiple
fireplaces or a fireplace and a furnace. In such cases, a common
chimney structure with multiple flues is a preferred method of
venting. The clay flue tiles of multiple flue chimneys often
terminate at exactly the same height above the common chimney
structure and with only a small horizontal separation between
each.
[0004] Caps and covers for these chimneys are well known in the
art. These devices serve to keep animals from nesting in the flue,
keep rain from the chimney interior and stop large sparks from
escaping. Inventors have produced varied functional coverings for
single flue tiles. Others have created and marketed single chimney
caps fitting over multiple flue tiles within one masonry structure.
However, these units often will not easily or properly fit a
multi-flue chimney structure and do not meet current code
requirements which specify that flues must not terminate at the
same vertical level. This code exists due to a phenomenon known as
flue reversal which can cause the products of combustion to exit
one flue and return to the living area through a second.
[0005] Pat. No. 4,436,021 (Hisey) discloses a chimney cover which
fits over a single flue. Pat. No. 4,732,078 (Giumenta) discloses
another in which the walls are formed from a single blank of sheet
metal. Pat. No. 4,334,460 (Simmons) disclosed a third which has a
composite roof. A feature which is common to all these chimney
covers is a solid cover or roof. The covers are constructed with an
overhang which projects on a horizontal plane and is beveled or
rounded at a downward slant to deflect water, snow and debris.
[0006] Thus, if such covers are installed on adjacent clay tiles,
the overhangs will collide and make correct installation difficult.
As a result, many are installed in a makeshift fashion, with the
overhang sheared off or bent down to avoid collision with the
adjacent cover.
[0007] Pat. No. 5,025,712 (Perry) discloses a flue cover which
allows for adjustment of the height of the rain cover for the
purposes of dampening or adjusting the smoke output from a flue. It
does not allow for changes in the flue termination height nor
deflection of smoke by vertical surfaces.
[0008] Pat. No. 6,066,039 (Cowen) discloses a single cover which
can be used to span multiple flues. The cover provides no
separation between the covered flues nor does it allow for flues to
be terminated at varying heights. By keeping multiple flues under
one cowl, it actually encourages flue gas leakage from one flue to
another.
[0009] Pat. No. 2,381,178 (Munyon) describes a chimney extension
which is designed for the lengthening of existing flue tiles. This
device possesses no termination or mesh and the adjustment method
does not properly fit the variance in common flue tile sizes. In
addition, the substantial extension of flue liners with single wall
sheet metal is contrary to Fire and Building code and considered
unsafe due to excess cooling of flue gases.
[0010] My own PPA, #456,444 discloses chimney extension brackets
and a novel mounting method which can be used to raise the
termination height of a single flue.
[0011] Neitherless, all of the sheet metal chimney covers
heretofore known suffer from the following disadvantages:
[0012] a) If one installs standard single flue covers on adjacent
flues, the rain covers will collide, forcing the installer to
modify the cover in a makeshift fashion. Even when modified thusly,
the chimneys will still terminate at the same level, thereby
creating a danger of flue gases exiting one flue and infiltrating
into the home or structure by returning down an adjacent flue that
is not in use. The modified rain covers will also fail to deflect
water and snow in the proper manner.
[0013] b) Sheet metal covers designed for multiple flues do not
properly take into account the need for flues to terminate at
widely varying heights. In addition, by providing a single cover
over multiple adjacent flues, they encourage the problem of flow
reversal and the introduction of noxious gases into the living
area.
[0014] c) Sheet metal covers for multiple flues are often custom
manufactured, or manufactured in small quantities in widely varying
sizes in order to fit varying flue tile sizes. This drives up the
cost of production and distribution.
[0015] d) Sheet metal chimney extensions and mounting brackets are
not commercially available. If they were fabricated, an
installation would require the purchase and installation of a
separate cap and deflector in order to provide the best
function.
BACKGROUND OF THE INVENTION-OBJECTS AND ADVANTAGES
[0016] It is therefore an object of the invention to provide a
chimney cover that can be installed on one or more flues of a
multiple flue chimney and in doing so, allow this flue tile to
terminate at a point substantially differing from the adjacent flue
tile, chimney cover or other exhaust outlet.
[0017] it is another object of the invention to provide a chimney
cover which will be easily installed on the termination of an
existing clay flue tile and adjust to fit the varying sizes within
each nominal size range of common clay flue liners.
[0018] it is another object of the invention to provide a chimney
cover that allows for installation next to common existing sheet
metal flue covers without having to modify either cover.
[0019] it is another object of the invention to provide a chimney
cover with a deflector that can be positioned facing the adjacent
flue tile so as to provide additional protection against crossover
of exhaust gases.
[0020] it is another object of the invention to provide a chimney
cover which allows existing masonry chimneys with multiple flues to
be rendered safer and to conform to current codes and
practices.
[0021] it is another object of the invention to provide a chimney
cover that is inexpensive to manufacture.
[0022] it is another object of the invention to provide a chimney
cover that can be retrofit on existing chimneys easily with a
minimum of tools needed.
[0023] it is another object of the invention to provide a chimney
cover that protects the flue from excess precipitation and animal
entry.
[0024] it is another object of the invention to provide a chimney
cover that protects the roof and other nearby combustibles from
large sparks originating in the connected appliance.
[0025] Further objects and advantages will become apparent from a
consideration of the ensuing description and drawings.
SUMMARY OF THE INVENTION
[0026] In accordance with the present invention, there is provided
a fabricated chimney cover having a box-like structure with a
vertically extended solid plinth above which is open mesh, expanded
metal or slotted metal and a solid cover. A deflector can be
positioned over one of the vertical open wall surfaces.
BRIEF DESCRIPTION OF THE DRAWINGS
[0027] A complete understanding of the present invention may be
obtained by reference to the accompanying drawings, when considered
in conjunction with the subsequent, detailed description, in
which:
[0028] FIG. 1 is a perspective view of an embodiment of the chimney
cover installed on a masonry chimney adjacent to a standard chimney
cover of the typical prior art.
[0029] FIG. 2 is a perspective view of an embodiment of the chimney
cover showing an extended plinth, deflector gasket and threaded
mounting screw.
[0030] FIGS. 3A-3D show various embodiments of an optional
deflector.
[0031] For purposes of clarity and brevity, like elements and
components will bear the same designations and numbering throughout
the FIGURES.
DESCRIPTION OF THE PREFERRED EMBODIMENT
[0032] FIG. 1 is a perspective view of an embodiment of the chimney
cover installed on Clay Flue Tile 102 protruding from a Masonry
Chimney Structure 100 and adjacent to a Standard Chimney Cover 122.
This embodiment consists of a Cover Mount 104 which attaches to the
Clay Flue Tile 102 by means of a Threaded Machine Screw 124 which
is tightened against the Clay Flue Tile 102. Those skilled in the
art will recognize that many other fastening means are possible.
The Extended Plinth 106 extends vertically from the Cover Mount
104. The Extended Plinth 106 is commonly constructed from sheet
metal materials, however other rigid materials may be used. the
Extended Plinth 106 may be insulated. The Screen or Open area 108
which serves to ventilate the chimney exhaust gases extends
vertically from the Screen or Open area 108. Ventilation may also
be facilitated using slots or other method known to those skilled
in the art. In this embodiment, The Rain Cover 120 is attached to
the top of the Screen or Open area 108. In another embodiment, the
Rain Cover 120 can be replaced with a horizontal screen. The
Deflector 110 can be affixed to one vertical wall of the Screen or
Open area 108, which serves to further deflect exhaust gases away
from the Standard Chimney Cap 122 or adjacent flues.
[0033] FIG. 2 is a perspective view of an embodiment of the chimney
cover showing a Gasket 126 which allows for a proper seal between
the Cover Mount 104 and the Clay Flue Tile 102. The Threaded
Machine Screw 124 is shown which facilitates attachments of this
embodiment to the Clay Flue Tile 102.
[0034] FIGS. 3A-D show optional Deflector 110 and various means for
storage and operation of this deflector.
[0035] Another embodiment of the Extended Plinth 106 is
telescoping, thereby allowing a vertical height adjustment.
[0036] REFERENCE NUMERALS
[0037] 100 Masonry Chimney Structure
[0038] 102 Clay Flue Tile
[0039] 104 Cover Mount
[0040] 106 Extended Plinth
[0041] 108 Screen or Open area
[0042] 110 Deflector
[0043] 120 Rain Cover
[0044] 122 Standard Chimney Cover (prior art--for reference
only)
[0045] 124 Threaded Machine Screw
[0046] 126 Gasket
[0047] OPERATION
[0048] In operation one installs the chimney cover on a clay flue
tile adjacent to another flue tile. To assure proper seal, a gasket
126 can optionally be installed between the top surface of the Clay
Flue Tile 102 and the Cover Mount 104. The installer can,
optionally, install a Deflector 110 over one of the vertical faces
of the Screen or Open area 108. When my chimney cover is installed
in this manner, a number of advantages become a evident:
[0049] (1) Gasket 126 assures that exhaust gas leakage at top of
Clay Flue Tile 102 is greatly reduced.
[0050] (2) Extended Plinth 106 provides an extended passage for
flue gases, thereby releasing them substantially above an adjacent
flue tile.
[0051] (3) Deflector 110 provides additional deflection of flue
gases away from adjacent flues.
[0052] Conclusion, Ramifications and Scope
[0053] Accordingly, the reader will see the the chimney cover of
this invention can be used to cover a flue tile easily and
conveniently without impeding on adjacent chimney covers. The
improved chimney cover also allows the effective flue gas
termination height to be raised, thereby bringing the chimney into
compliance with modern codes and practices.
[0054] Since other modifications and changes varied to fit
particular operating requirements and environments will be apparent
to those skilled in the art, the invention is not considered
limited to the examples chosen for purposes of disclosure, and
covers all changes and modifications which do not constitute
departures from the true spirit and scope of this invention. For
example, the plinth can be telescoping and have other shapes which
allow a decorative effect on the chimney cover. The plinth may also
be removable.
[0055] Having thus described the invention, what is desired to be
protected by Letters Patent is presented in the subsequently
appended claims.
* * * * *