U.S. patent number 3,667,648 [Application Number 05/052,390] was granted by the patent office on 1972-06-06 for slip out glass panel for cover member.
This patent grant is currently assigned to Beatrice Foods Co.. Invention is credited to Walter Koziol.
United States Patent |
3,667,648 |
Koziol |
June 6, 1972 |
SLIP OUT GLASS PANEL FOR COVER MEMBER
Abstract
A cover member for a cooking unit wherein a panel can be
inserted and removed without fastening means or the removal or the
moving of any parts in the cover member. A frame is provided with
an opening to receive a panel which is formed in two different
planes and preferably, substantially L-shaped. The frame contains
two pairs of oppositely disposed and spaced flanges, the lower pair
supporting the panel in its one dimension and a base or ledge
portion which supports the panel in its second and shorter
dimension.
Inventors: |
Koziol; Walter (Russell,
IL) |
Assignee: |
Beatrice Foods Co. (Chicago,
IL)
|
Family
ID: |
21977310 |
Appl.
No.: |
05/052,390 |
Filed: |
July 6, 1970 |
Current U.S.
Class: |
126/211; 220/377;
312/284; 220/662; 312/292 |
Current CPC
Class: |
A47J
36/06 (20130101) |
Current International
Class: |
A47J
36/06 (20060101); A47J 36/00 (20060101); B65d
043/12 () |
Field of
Search: |
;126/190,200 ;220/41,82
;217/62,63 ;206/45.34 |
References Cited
[Referenced By]
U.S. Patent Documents
Foreign Patent Documents
Primary Examiner: Schwartz; Raphael H.
Claims
I claim:
1. A cover for a cooking device constructed and arranged to carry a
panel therein, said panel having a first portion in one plane and a
second portion in another plane comprising: a frame, said panel
insertable in and freely carried by said frame, said frame having
an opening accommodating said panel, a first pair of oppositely
disposed laterally spaced flanges carried by said frame and
positioned substantially in the same horizontal plane, a second
pair of oppositely disposed lateral flanges positioned in
substantially the same horizontal plane and spaced from said first
pair of flanges to accommodate said panel therebetween, a base
portion in said frame for supporting the second portion of said
panel and support and retaining means mounted on said frame in said
base portion adjacent said opening to prevent said panel from
moving outwardly from said opening, said panel constructed and
arranged to contact said first pair of lateral flanges and said
base support means on said base when in a normal resting position
and to be removed from said base retaining means by an upward
movement of said second portion of said panel, said first and
second pairs of lateral flanges, spaced to provide sufficient
movement therebetween for said second portion of said panel to
clear said retaining means in said base.
2. The cover for a cooking device as defined in claim 1 wherein
said base support and retaining means includes an inward wall
extending upwardly from the base portion.
3. The cover for a cooking device as defined in claim 1 further
including a flange positioned opposite the second portion of said
panel and extending transversely to said two pairs of lateral
flanges and in the same plane as said second pair of flanges.
4. The cover for a cooking device as defined in claim 1 wherein
said base support and retaining means includes two projections
mounted on said base and outwardly of said frame.
5. The cover for a cooking device as defined in claim 1 wherein
said opening and said panel are substantially L-shaped with the leg
of said "L" forming the second and smaller portion of said opening
and curved slightly more than 90 degrees.
6. The cover for a cooking device as defined in claim 1 wherein an
indent is formed in said base adjacent said opening for engagement
with the bottom edge of said panel.
7. The cover for a cooking device as defined in claim 1 wherein
said cover comprises a cover member for a barbecue unit, whereby
said panel is retained in said cover when said cover is lifted
upwardly.
8. The cover for a cooking device as defined in claim 7 wherein
said cover is constructed of cast aluminum.
9. The cover for a cooking device as defined in claim 8 wherein
said panel is constructed of heat resistant glass.
Description
BACKGROUND OF THE INVENTION
This invention relates to a removable panel member of the
transparent type and more particularly to a panel member which can
be inserted into an opening in a cover member and freely carried
therein by means of flanges and projections.
Panel members or windows for cooking devices of the type concerned
with in this invention are described in U.S. Pat. Nos. 1,008,414;
2,478,253; 3,049,073 and 3,379,190. U.S. Pat. Nos. 2,478,253,
3,049,073 and 3,379,190 all describe window members for broilers or
ovens which are of the permanently mounted type. In these
constructions, the glass is fixed inside a frame and is not
removable therefrom. In U.S. Pat. No. 1,008,414, glass panels are
removed from an oven door. However, the removal can only be
effected from inside the unit and no means are provided to retain
the glass in the door except when the door is in an upright
position. The prior art nowhere teaches a removable panel member
which can be easily inserted from outside a cover member without
requiring the use of removable securing means such as screws, clips
or the bending of flanges. Neither does the prior art illustrate a
removable transparent panel member in a cover for a barbecue unit
which will securely hold the panel in place yet allow quick removal
for cleaning and insertion, or replacement should the panel become
broken or cracked.
It is an object of the present invention to provide a novel cover
for a cooking device wherein a panel member can be inserted and
removed such as for cleaning or replacement without removable
fastening means or the movement of any portion of the frame
structure. It is another object of this invention to provide a
transparent panel member for a barbecue cover which will permit
viewing of the product being cooked which panel is securely held in
the cover member throughout the movement of the cover. It is still
another object of the present invention to provide a cover member
for a grill unit which will retain the panel in a secure manner and
without maintaining close tolerance of the frame structure. It is
yet another object of this invention to provide a panel member
which can be removed from the cover without the need of any
tools.
SUMMARY OF THE INVENTION
The foregoing objects are accomplished and the shortcomings of the
prior art are overcome by the present cover which is comprised of a
frame formed from flanges and projections for accommodating a panel
in a secure manner. The panel is formed in two planes with a major
portion and a second minor portion and the panel is retained by two
pairs of oppositely disposed lateral flanges carried by the frame
on opposite sides of the panel at its major portion. The minor
portion of the panel rests on a base containing a wall and
projections to prevent the base portion from moving off and out of
the frame. Sufficient distance is allowed between the pairs of
lateral flanges to permit the lower edge of the minor portion of
the panel member to pass over the projections in the base portion
and allow expansion of the glass from the heat supplied for
cooking. The panel member is also constructed to extend from the
base of the frame to the back wall of the frame member to
completely close the opening in the cover.
BRIEF DESCRIPTION OF DRAWING
A better understanding of the present cover and panel will be
accomplished by reference to the drawing wherein.
FIG. 1 is a perspective view of a barbecue unit showing the cover
with the panel member in its normal resting position in the frame
of the cover.
FIG. 2 is a view in vertical section taken along line 2--2 of FIG.
1 and additionally showing the panel member in broken lines
indicating the direction for removal from the frame.
FIG. 3 is a view in vertical section taken along line 3--3 in FIG.
1.
FIG. 4 is a partial view in vertical section taken along 4--4 of
FIG. 1.
DESCRIPTION OF THE PREFERRED EMBODIMENT
Proceeding to a detailed description of the present invention, the
cover 10 is contained in the usual barbecue unit 11 having a base
member 12 supported by pole 13. A generally L-shaped panel 15 which
is transparent is accommodated in cover 10 by an opening 16 which
is of the same configuration as panel 15. Panel 15 has a major
portion 17 contained in one plane and a smaller minor portion 18
which joins the major portion 17 through an arc of slightly greater
than 90.degree..
As best shown in FIG. 3, a first pair of two oppositely disposed,
laterally spaced flanges 20 and 21 lie in a horizontal plane below
the surface 22 of cover 10 at a distance to permit the surface 23
of the major portion 17 of panel 15 to be coextensive with upper
surface 22. Flanges 20 and 21 extend laterally along opening 16
from a point inwardly from the front of the cover 10 and toward the
rear but stopping short distance from it. This is best seen in FIG.
2. Positioned near the front of the cover 10 are two oppositely
disposed pairs of lateral flanges 25 and 26 which project upwardly
from the upper surface 22 of cover 10 and extend only a short
distance from the front of the cover and inwardly thereof. As in
the instance of the lower lateral flanges 20 and 21, upward lateral
flanges 25 and 26 are also horizontally positioned and in the same
plane. In the same plane as flanges 25 and 26 but extending
transversly thereto and along the rear edge of opening 16 is rear
flange 30 which extends almost entirely across the back of opening
16.
Referring specifically to FIG. 3, it will be seen that panel 15
rests upon flanges 20 and 21. The smaller front portion 18 of panel
15 rests on the base portion 32 in front wall 33 by means of
contact of the lower edge 34 as is best seen in FIG. 2. It is
dimensioned to be coextensive with the surface 35 of front wall 33
when it rests on base portion 32. Forward movement of the panel 15
outwardly from cover 10 is restricted by two projections 37 and 38
located on the base portion 32 and outwardly from the frame. Inward
movement of the panel 15 is restricted first by a short upstanding
inward wall 40 and the abutement surface 42 formed from the wall 43
comprising the top of cover member 10.
With reference to FIG. 4 it will be seem that a small indentation
45 is formed in from wall 33 to provide access to the bottom edge
34 for removal purposes of panel 15. To aid in the removal and
insertion of panel 15 between flanges 20 and 21 and 25 and 26 as
well as the clearance of the bottom edge 34 over projections 37 and
38, sufficient distance is allowed between the inner edges 25a, 26a
and 20a and 21a of the respective flanges. The same is true
concerning the allowance of clearance between the inner surfaces
20a and 21a and the inner surface 30a of the back flange 30. The
previously described clearance also has the dual function to allow
for expansion of the glass panel 15 during cooking. These aspects
will be better described in the following description of the
operation.
OPERATION
A better understanding of the advantages of the cover 10 with the
slip out panel 15 will be had by a description of its operation.
Assuming the panel 15 is in place as shown in FIG. 1 with no heat
being utilized in unit 11 and it is cool, a finger is placed in
indent 45 to contact the bottom surface 34 of panel 15. Sufficient
upward movement is effected to permit the bottom edge 34 to clear
over projections 37 and 38. This is effected by permitting
sufficient distance between the previously mentioned inner surfaces
20a, 21a, 25a, 26a and 30a of the respective flanges. Upon upward
movement of panel 15, so that the bottom surface 34 of the panel
will clear the projections 37 and 38, contact will be made with the
upper surface 23 of the panel 15 with the inner surface 25a and 26a
of flanges 25 and 26, respectively. At this point, the panel will
be moved outwardly as shown in dotted lines in FIG. 2 and
completely removed from the frame formed by flanges 26, 25, 20, 21
and 30 as well as the base wall 32 of the front panel 33. To insert
the panel 15 back into the frame, the previously described steps
are merely reversed. Panel 15 will be held in an upward position so
that the bottom edge 34 will clear over the projections and then
moved toward the back of the cover until the front portion 18 is
positioned between projections 37 and 38 and inner wall 40. At this
point the panel will be left to drop by means of gravity and come
to rest between the projections 37 and 38 and the wall 40. At this
position, the panel will extend to be beneath the back flange 30
and adjacent wall surface 42. With the panel in its seated position
the cover member 10 can be rotated about a horizontal axis without
fear of it being accidentally removed from opening 16. Any upward
movement is restricted by both flanges 25, 26 and 30, any outward
movement is prevented by projections 37 and 38 and any inward
movement by wall 40 and wall surface 42. Retention of panel 15
within the confines of the described flanges and projections is
aided by heat from the unit 11 which will cause the panel and the
surrounding flanges, projections and wall surfaces to expand to
hold the panel without cracking.
The preferred material for forming cover member 10 as well as all
of the flanges and projections is cast aluminum. If desired, rather
than casting the flanges, 20, 21, 25, 26, and 30, they could be
welded to the surrounding top wall 43. The same is true with
respect to projections 37, 38 and inner wall 40 and attachment to
front panel 33. Materials other than aluminum could be employed for
forming cover 10 and the described flanges, projections and walls
such as cast iron or steel. Panel member 15 is formed from heat
resistance glass, however, other heat resistant transparent
materials such as a heat resistant resinous plastic could be
utilized.
Flange 30 is not essential in achieving the described advantages of
the frame as flanges 25 and 26 will provide restriction and
retention of panel 15 when cover 10 is lifted upwardly. Neither is
wall 40 required as inward movement is restricted by surface 42 of
top wall 43.
It will thus be seen that through the present invention there is
now provided a removable panel member for a cover on a cooking
device which is readily removed without requiring the loosening or
removal of parts or bending of any flanges. The fastening means is
integral with the unit and can be easily fabricated. All the
foregoing advantages are achieved in a unit which will still afford
a secure and tight fitting of the panel member without danger of
accidental removal even though the cover may be dropped against the
base or opened or closed in a rapid manner.
The foregoing invention can now be practiced by those skilled in
the art. Such skilled persons will know that the invention is not
necessarily restricted to the particular embodiments presented
herein. The scope of the invention is to be defined by the terms of
the following claims as given meaning by the preceding
description.
* * * * *