CA1251703A - Grid system - Google Patents
Grid systemInfo
- Publication number
- CA1251703A CA1251703A CA000542114A CA542114A CA1251703A CA 1251703 A CA1251703 A CA 1251703A CA 000542114 A CA000542114 A CA 000542114A CA 542114 A CA542114 A CA 542114A CA 1251703 A CA1251703 A CA 1251703A
- Authority
- CA
- Canada
- Prior art keywords
- cover
- bars
- holder
- replaceable
- sleeves
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/067—Horizontally disposed broiling griddles
-
- A—HUMAN NECESSITIES
- A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
- A47J—KITCHEN EQUIPMENT; COFFEE MILLS; SPICE MILLS; APPARATUS FOR MAKING BEVERAGES
- A47J37/00—Baking; Roasting; Grilling; Frying
- A47J37/06—Roasters; Grills; Sandwich grills
- A47J37/07—Roasting devices for outdoor use; Barbecues
- A47J37/0704—Roasting devices for outdoor use; Barbecues with horizontal fire box
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Baking, Grill, Roasting (AREA)
Abstract
Patent Application Of Brian A. Korpan For GRID SYSTEM
Abstract: A grid system comprises a cover holder (26) and a replaceable cover (28) which can be fitted to the cover holder (26) by a sliding engagement. The holder (26) comprises a plurality of identical elongated T-shaped bars (30) being aligned parallel to one another on an equal plane, spaced equally apart, and being supported by two elongated retangular shaped front and rear crossbars (32,34) respectively. The front crossbar (32) having centrally located on its top side a small elongated extensible bar (52) and a bracket (54), which is used to support the front end of the bars (30) above an opposing member to facilitate fitting or removal of the replaceable cover (28). The replaceable cover (28) comprises a plurality of identical elongated generally retangular shaped sleeves (66) being aligned parallel to one another on an equal plane, spaced equally apart, and held in place by two margins (68) crossing perpendicular at the ends of sleeves (66), and on the same plane as the tops of sleeves (66). The replaceable cover (28) can be fitted to the cover holder (26) by placing a margin (68) perpendicular to and on top of the front ends of the bars (30) and aligning each sleeve (66) with its corresponding bar (30). The replaceable cover (28) can then be slid on to the holder (26) having the female sleeve (66) slidingly engaged by the male upper portion (42) of the bars (30).
Abstract: A grid system comprises a cover holder (26) and a replaceable cover (28) which can be fitted to the cover holder (26) by a sliding engagement. The holder (26) comprises a plurality of identical elongated T-shaped bars (30) being aligned parallel to one another on an equal plane, spaced equally apart, and being supported by two elongated retangular shaped front and rear crossbars (32,34) respectively. The front crossbar (32) having centrally located on its top side a small elongated extensible bar (52) and a bracket (54), which is used to support the front end of the bars (30) above an opposing member to facilitate fitting or removal of the replaceable cover (28). The replaceable cover (28) comprises a plurality of identical elongated generally retangular shaped sleeves (66) being aligned parallel to one another on an equal plane, spaced equally apart, and held in place by two margins (68) crossing perpendicular at the ends of sleeves (66), and on the same plane as the tops of sleeves (66). The replaceable cover (28) can be fitted to the cover holder (26) by placing a margin (68) perpendicular to and on top of the front ends of the bars (30) and aligning each sleeve (66) with its corresponding bar (30). The replaceable cover (28) can then be slid on to the holder (26) having the female sleeve (66) slidingly engaged by the male upper portion (42) of the bars (30).
Description
7~3 Backg~ound--Field Of InYQntion This invention r01ates to grid systems compris.ing a cover holder and a replaceable cover, especially to grid systems comprising a cover holder and a replaceable cover which is used a5 the cooking grid in bar'becue grills, and gas barbecues. I'he replaceable cover being used as the cooking sur~'ace, and, after becoming soiled or at will can be remo~ed and replaced with a new replaceab:Le cover.
Baokground--~esc~iption Of Prior Art Many, i not all users of cooking grids prefer to cook food on a clean surface.
Heretofore variations on one basic type of cooking grid have been proposed and implemented for use in barbecue grills, and gas barbecues.
This basi~ grid consists oP a plurality of parallel bars, spaced apart from one ano-ther, and fixed on an equal plane the outer most surface providing the cooking surPace on which food is supported.
A~ter this type of grid has been used, to clean it thoroughly requires the transPer of the grid to a suitable cleaning area such as a sink. Then a messy, dif-ficult, and time consuming process of scraping and scrubbing is required to thoroughly clean the grid.
What makes this type of ~rid so difficult to clean is a combination o~ Pactors. ~ir~t~ the Pood residue lePt on the grid after use is usually burnt on, thus, it is hard to remove and necessitates
Baokground--~esc~iption Of Prior Art Many, i not all users of cooking grids prefer to cook food on a clean surface.
Heretofore variations on one basic type of cooking grid have been proposed and implemented for use in barbecue grills, and gas barbecues.
This basi~ grid consists oP a plurality of parallel bars, spaced apart from one ano-ther, and fixed on an equal plane the outer most surface providing the cooking surPace on which food is supported.
A~ter this type of grid has been used, to clean it thoroughly requires the transPer of the grid to a suitable cleaning area such as a sink. Then a messy, dif-ficult, and time consuming process of scraping and scrubbing is required to thoroughly clean the grid.
What makes this type of ~rid so difficult to clean is a combination o~ Pactors. ~ir~t~ the Pood residue lePt on the grid after use is usually burnt on, thus, it is hard to remove and necessitates
-2- ~$
7(33 cleaning by hand. Second, the spaces between the bars necessitates a c:Leaning action along the length of the 'bars usually one bar at a time~ because a cleaning action perpendicular to the bars causes water, suds, etc. to be sprayed into the air and of-ten on to the user, walls, counter tops, the floor, etc.. creating a considerable mess. Third, the weight of -the grids make them hard -to handle.
Fourth, the size o the ~rids is often too large to fit completely into a standard sized sink. Finally, barbecue grills and ~as barhecue~ are usually kept outdoors. The significance o~ t'his is that a~ter preparing t'ood using the barbecue the user proceeds to eat.
After eating. -the barbecue is stored until the next time it is re~uired, thus, the soiled ~rid is no-t out in the open reminding the user to clean it, but rather, the soiled grid is ~orgotten about until the next time the barbecue is to be used. At that time it is unlikely the user would want to delay bar'becuing ~or up to twenty minutes in order to clean the cooking grid. As a result of these ~actors users Pound -this type of co~kin~ grid unsatisfactory.
Due to the difficulty o e cleaning this type of grid various wire brushes and the like have been proposed and implemented for cleaning ~0 the grid in place in the barbecue unit. Using this type of cleaning method, howeverJ is deemed unsatisfactory by users because it is time ~onsuming, it can be physically demanding, and further, it removes only the thic~er residue, thus, leaving behind a greasy charred residue on the ~rid. In addi~ion, the residue removed i5 deposited in the body of the bar~ecue where in the case of gas barbecues it can damage the burner unit.
.
~L~5~7~3 Some users, 'because of the dif~iculty cleaning this type of grid thoroughly with soap and water and the inadequacies of brush cleanin~
don'-t clean -their grids, thus, allowing charred cooking residue to buiLd up until eventually they must at their own expense either replace the old grid with a new one or spend a great deal o-P time and e~'fort to try and salvage th0 old grid.
In essence, users found this type of grid unsatisfactory because of the difficulty cleaning it thoroughly and the difficulties and inadequacies o-P other cleaning methods.
A variation of the basic grid was to cut larger grids into two or more pieces, however, the basic cleaning dif~iculties remained requiring the use of t'he unsatisfactory cleaning procedures used on the basic ~rid. Users" thus, ~ound this variation unsatisfactory.
Another vari.ation of the basic grid was -to coat the grid in porcelain instead o~ chrome. The porcelain, however, becomes coated with residue during use simi:Lar to the basic grid. Again this variation still requires the unsatisfactory cleaning procedures as the 'basic ~rid, and thus, was ~ound to 'be unsatisfactory by users.
Mo~,t users, there~ore, would find it desirable to have a cooking grid which could provide a clean cooking surface more easily.
. ~
~ 7 ~3 Brle~ Sl~nmar~-~Ob~ects .And Ad~anta~os Accordingly several objects and advantages of my invention are: to provide a novel grid system for easily, reliably, neatly, quickly, and conYeniently providing a clean cooking surface, to provide a ~rid system which re~uires a minimum of skill and -training to U38, to provide a grid system which completely eliminates -the need to waste time and ener~y to perform the difPicult and frustrating job of cleaning a cooking grid.
In addition, more objects and advantages of my invention are: to provide a grid system compatible with barbecue grills, gas barbecues, broiler pans etc., to provide a ~rid system that can improve the taste and appearance of foods prepared on it by easily providing a clean cooking surface, thus, eliminating contact betwaen fre5hlY
prepared foods and old cooking residue, to provide a grid system that may result in health benefits, because scientific studies have shown that carcinogenic substances can be produced in burn-t ~ood, and since many users of unsati.sfactory prior art cooking grids are cooking food on a surface covered in old burnt food residue their health may be at riskl thus, because my invention provides an easier way to obtain a clean cooking surface proper use of my invention will eliminate contact between fresh food and old burnt cooking residue, therefore, health benefits may result for users of my invention.
~eader.s will find furthar objects and advantages of my invention from a consideration o-f the ensuing dascription and the accompaning G drawings-~ 7 Brief Descrip-tion Of ~xawing ~i~ur~s:
Fig. 1 shows a perspective view of a cover holder and a replaceable cover according to the invention.
Fig. ~ shows a back end elevation view o~ the cover holder of Fig. 1.
Fi~. 3 shows an enlarged perspec-tive view of the extensible bar and bracket of the cover hol~2r of Fig. 1.
E'ig. 4 shows a cross section view of the extensible bar and bracket alon~ the line 4 - 4 of Fig. 3.
Fig. 5 shows a perspective view of the underside of the replaceable cover of Fig. 1.
Fig. 6 shows a perspeotive view o~ the introduc-tion of -the replaceable cover to the cover holdex both of Fig. 1.
Fig. 7 shows a perspective view of the replaceable cover being partially ~i-tted to the cover holder both of Fig. 1.
Fig. 8 shows a perspective view of the replaceable cover being fully fitted to the cover holder both of Fi~.1 ~ 7 ~3 Fi~. 9 shows a perspectiYe view of a barbecue units upper body having the cover holder of Fig. 1 in place with its ~ront portion support~d above the front member of said body by the extensible bar of Fi~. 1 being in an extended position.
: Drawing Re~erence Nu~srals:
26 cover holder 28 replaceable cover 30 bars 32 front crossbar 34 rear crossbar 36 beveled corners of 30 38 ~aps between 30 40 lower portion of 30 42 uppex portion of 30 44 side of 42 46 bottom of 42 48 side o~ 40 50 T-joint spo-t weld.s joinirl~ 30 -to 32 ancl 34 52 extensible bar 54 bracket 56 pin of 52 58 frontal projection of 52 60 inverted U-shaped portion o~ 54 62 flan~es of 54 64 lap joint spot welds between 62 and 32 , 66 sleeves 68 marglns 70 wired edges 72 gaps between 66 74 sides of 66 76 opposing inwardly directed members o-f ~6 78 gaps between 7~
80 beveled corners of 76 82 barbecue unit upper body 84 OppQsing front member of 82 De~cri,ption O~ Pr~err~d ~mbodim~nt Fig. 1 shows a perspective view of the cover holder 26 and the replaceable cover 28 according -to the preferred embodiment of the invention. The holder 26 comprises a plurality of elon~ated T-shaped bars 30, prefera'bly made of an aluminium alloy and each having two 'beveled corners 36 loca-ted on the upper porti.on 42 and front end of each bar 30. The beveled corners 36 help to align and ease the sliding engagement of the replaceable covers elongated ge~erally retangular shaped sleeves 66 with the upper portion 42 of the bars 30. The bars 30 are equal lenghts and are aligned parallel to one another on an e~ual plane and are spaced equally apart creating gaps 38. The T-shape of each bar 30 is illustrated best in Fig. 2 which is a back end elevation view of the holder 26 of Fig. 1. The two main portions of each bar 30 is tha UPper portion 42 and the lower portion 40. The upper portion 42 to be slidingly engaged by the replaceable covers generally retangular shaped sleeves ~ of Fig. 1 .' 7(~3 6, 6, 7, and 8.
The bars 30 are held in place by a front crossbar 32 and a rear crosshar 34 which are both elongated retangular shaped bars with uniform sections throughou-t their entire lengths and which are preferably made of an aluminium alloy. The application of the bottoms of the front and back ends of hars 30 to the top of the front and rear cross bars 32 and 34 respectiveLy, forms T-joints which are spot welded 50 being indicated by the symbol for a spot weld from Patent and Trademark O~fice: Guide For Patent ~rafts~an: Washington, D.C.~ U.S. Government Printing Office, 1975.
Again referrin~ -to Fig. 2 the gaps 38 between the bars 30 and in particular the width of the gaps 38 between the sides 44 of the bars ~0 is determined mainly by the dimensions of the bars 30. The width of the gaps 33 can be as wide as is practical, however, they must not be -too narrow because the replaceable cover 28 is a one piece constru.ction. For example, -the replacaable co~er 28 could be constructed by folding a piece of reasonably strong and rigid aluminum foil over a form modeled a-.fter the cover holder 26 but having slightly larger dimensioned bars 30 to insure that the replaceable cover 28 resulting is large enough so that the sliding engagement of the replaceabla co~er 28 to the cover holder 26 does not produce excessive fric-tion. Before foldin~ the piece of foil over the form the foi:L is first cut in a pattern so that when it i5 placed on top of the form coverin~ the tops of the bars 30 and the gaps 38 -~ between them the cuts in the foil are down the middle of the foil ~
7 ~3 cover.ing the gaps .38 parallel to the bars 30. The foil on either side of the cuts and the foil extending beyond the outside edges of the extreme right and left bars .30 would then be folded down and over the sides 44 and bottom sides 46 o~ the bars 30. l'hus, the gaps 38 must be wide enough to insure enough ~oil is available to co~er sufficiently the sides 44 and bottom sides 4~ of the bars 30 adjacent the gaps 38.
Located on the top of the front crossbar 32 between two centrally located bars 30 and illustrated best in Fig. 3 and 4 is a means for supporting the front end of bars 30 above an apposing member in order to -facilitate the fitting of the replaceable cover Z8 to the holder 26. It is comprised of an extensible bar 52 and bracket 54. The ex-tqnsible bar is a small retangular shaped elongated bar preferably made o-f an aluminium alloY having a pin 56 which is inserted in a hole at the back end portion of the extensible bar 52 which prevents the extensible har 52 from being pulled free from the bracket 54, and a frontal projection 58 which is an upward right angle bend of the front end portion of the extensible bar 52 the end of which projects above the top of the brac.ket 54 but not so high as to interfere with the application of the replaceable cover 28. The frontal projection 58 can be ~rasped and pulled by the user to put the extensible bar 52 in an extended position, see Fig.9, or pushed to put the extensible bar 52 in a retracted position while preventing the extensible bar 52 -from heing pushed -free from the bracket 54.
The bxacket 64 is a one piece construction preferably made of an aluminium alloy. The bracket 54 provides a guide ~nd holder for the e~-tensible bar 52 while allowing the extensible bar 52 to be extsnded and retracted. It is comprised of a central portion 60 which is inverted U-shaped, and two flan~es 62 one on either side o~ the inverted U-shaped portion 60. The bracket 54 is a-ttached to the ~ront cross- bar 32 by spot welds ~4 indicated by -the symbol for a spot weld from Patent and Trademark Office: Guide For Pa~ent Draftsman:
Washington, V.C., U.S. Government Printing Office, 1975. The spot welds 64 are placed in the lap ~oints formed by the flanges 62 and the top of the ~ront crossbar 32, see Fig. 1. The length of the shortest sides of the bracket 54 is les.5 than the width of the surface of the front crossbar 32 on which it located. The bracket 54 is positiorled so that -the long side at the back of the bracket 64 is flush to the back ed~e of the front crossbar 32, thus, leaving the long side at the fron-t of the bracket 54 indented suf:eiciently throughout its length so tha-t when the extensible bar 52 is in its fully retracted position, illustrated best in Fig. 3~ the front edge of the frontal projection 58 does not extend beyond the front ed~e o~ the front crossbar 32.
The entire cover holder 26 including the extensible bar 52 and bracket 54 can be treated with suitable platings or coatings to enhance durability, however, this i5 not a necessity.
The dimensions of the cover holder 26 are determined by the specific application.
~ 7 ~3 The replaceab:le cover 28 oP Fig. 1 is also shown in a perspective view of its underside in Fi~. 5, and top perspeckive VietJs in Fig.
6, 7, and 8. The replaceable cover 28 is a one piece construction preferably made of reasonably strong and rigid aluminum foil, it mainly comprises a plurality of identical elongated generally retangular shaped sleeves 66 all aligned parallel to one another on an equal plane and spaced e~ally apart creating gaps 72. The sleeves 66 are the emale part of the engagement between the replaceable cover 28 and 'holder 26, the upper por-tion 42 of the bars 30 baing the male part of the engagement.
Shown best in Fig. 5 are specific features of the sleeves 66. From the top (bo-ttom in Fig. 5) of the sleeves 66 extending downward (upward in Fig. 5~ at right angles are sides 74. Extending inwardly at right an~les from the sides 74 are opposing inwardly directed members '76 each having 'beveled corners 80 at 'both ends. Gentrally locatecl between the mem'bers 76 are gaps 78 which run the sntire length of the sleeves 66.
When the replaceable cover 28 is fully en~aged with the holder 26, illustrated in ~ig. a, the sleeves 66 effec-tively cover the tops, sides 44, and bottom sides 46 of the bars 30 over the length of the sleeves 66 which is -the distanae between the inside edges of the margins 68. Although the tops and sides 74 of the sleeves 66 completely cover the t,ops and side.s 44 of the bars 30 over the length of the sleeves 66, the opposing inwardly directed members 76 do not $ completely cover the bottom sides 46 of the b~rs 30. The gaps 78 ~:~5~703 'betwaen the opposing inwardly directed members 76 is wider than ths :Lower portion 40 of the bars 30 so that during the sliding en~agement the opposed inside edges o the member.s 76 do not come in contact with the sides 48 of the bars 30, thus, preventing unwanted friction points. As mentioned earlier another way engagement friction is reduced is -that the top and sides '74 o~ the sleeves 66 are wider than the surfaces they cover namely the tops and sides 44 o~ the bars 30.
Ths 'bevels 80 on both ends of each opposing inwardly directed member 76 help to guide and ease -the engagement of the ].ower portion 40 of th0 bars 30 into the gaps 78 of the sleeve.s 66.
Two margins 68 one at each end of the sleeves 66 are perpendicular to the sleeves 66 and on the same plane as the tops O~e sleeves 66 which ~oin the inside edges of the margins 68 at 'both ends o~ the sleeves 66, thus~ holding the sleeves 66 in place. Fig. 6 shows a perspective view of the in-troduction o-~ the replaceable cover 28 to the holder 26. The bottom side of either margin 68 is plaaed on top o e the top front portion O:e bars 30, this sets the cover 28 on the correct plane for -the sliding engagement, and aids the user in aligning each sleevs 66 with its corresponding bar 30.
The structure o~ the sleeves 66 make the replaceable cover 28 quite rigid over the length of the sleeves 66. To make the replaceable cover rigid over its length perpendicular to the sleeves 66, the outside edge Oe each margin 68 is a wired edge 70. In this application~ however, wiras inside the edges are not necsssaxy.
The dimensions of the replaceable cover 28 are determined by the dimensions of the holder 26.
Opera-tion O:~ Pxe~erred Embodi~ent The cover holder 26 having a replaceable cover 28 shown in perspective views in Fig. 11 6, 7, and 8 is one embodiment ~hich is suitable ~or use in many barbecue grills, and most ~as barbecues.
Thess applications are such that when a cooking ~rid is installed in a unit it is usually suppor-ted by at least two small ledges on which the bottoms of crossbars 32 and 34 would rest Installation of the holder 26 simply requires the usex to lift out the old cooking grid, if one is in place, and replace it with a relevant sized holder 26 having its top side facing up and the front crossbar 32 at the ~`ront of the unit, and the bottoms of the crossbars 32 and 34 resting on the supportin~ ledges. In many of the applications cited the holder 26 restin~ on the supporting ledges would be held on a plane inside a body 82 surrounded by opposing members, as illustrated in Fig. 9.
The best method to apply a replaceable covex 28 to the holder 26 in applications similar to that ill~strated in Fig. 9 is as follows:
First, the user must make sure that the unit is not emitting any heat and that the holder 26 is cool enough to be handled. Second, with one hand the user will grasp the upper portion 42 of a central bar 30 near its front end and then lift the ~ront o~ the holder 26 and in ~2~7~3 particular the front crossbar 32 above the opposing front member 84 while the rear cro.ssbar 34 remains on its supporting ledge and acts as a pivot point. While holding the holder 26 in this positio-n the user with his other hand then grasps the frontal projection 58 of the e~tensible bar 52 and pulls the extensible bar 52 into its fully extended position. Third, the user lower.s the front of -the holder 26 so that the bottom of the extensible bar 52 rests on the top of the opposing front member 84, see Fig. 9. This position leaves the front crossbar 32 below the opposing front member 84, thus, preventing the holder 26 from being able to be pulled foxward and free of the body 82~ while also elevatin~ the front of bars 30 above the opposing front member 84. This frees the users hands to ~it a replaceablc cover 28 to the ho].der 26.
Fourth, the user holds the replaceable cover 2~ with its top facing up and places either margin 68 parallel to the ~ront crossbar 32 and on top of the front end o e the bars 30~ Either margin 68 can be used as the leading edge because both halves of the replaceable co~rer 28 divided parallel to the margins 68 are identi.cal. Now the user aligns the replaceable cover 2~ 50 that each sleevo 66 is in line with its corresponding bar 30, as shown in Fig. 6. The margin 68 resting on top of the bars 30 automatically sets the correct height for the cover 28 to be slidingly engaged on to -the holder 26. Fifth, while holdin~ the replaceable cover 28 on the same plane as the holder 26, the user then pushes it on to the holder 26 bY its outside wired edge
7(33 cleaning by hand. Second, the spaces between the bars necessitates a c:Leaning action along the length of the 'bars usually one bar at a time~ because a cleaning action perpendicular to the bars causes water, suds, etc. to be sprayed into the air and of-ten on to the user, walls, counter tops, the floor, etc.. creating a considerable mess. Third, the weight of -the grids make them hard -to handle.
Fourth, the size o the ~rids is often too large to fit completely into a standard sized sink. Finally, barbecue grills and ~as barhecue~ are usually kept outdoors. The significance o~ t'his is that a~ter preparing t'ood using the barbecue the user proceeds to eat.
After eating. -the barbecue is stored until the next time it is re~uired, thus, the soiled ~rid is no-t out in the open reminding the user to clean it, but rather, the soiled grid is ~orgotten about until the next time the barbecue is to be used. At that time it is unlikely the user would want to delay bar'becuing ~or up to twenty minutes in order to clean the cooking grid. As a result of these ~actors users Pound -this type of co~kin~ grid unsatisfactory.
Due to the difficulty o e cleaning this type of grid various wire brushes and the like have been proposed and implemented for cleaning ~0 the grid in place in the barbecue unit. Using this type of cleaning method, howeverJ is deemed unsatisfactory by users because it is time ~onsuming, it can be physically demanding, and further, it removes only the thic~er residue, thus, leaving behind a greasy charred residue on the ~rid. In addi~ion, the residue removed i5 deposited in the body of the bar~ecue where in the case of gas barbecues it can damage the burner unit.
.
~L~5~7~3 Some users, 'because of the dif~iculty cleaning this type of grid thoroughly with soap and water and the inadequacies of brush cleanin~
don'-t clean -their grids, thus, allowing charred cooking residue to buiLd up until eventually they must at their own expense either replace the old grid with a new one or spend a great deal o-P time and e~'fort to try and salvage th0 old grid.
In essence, users found this type of grid unsatisfactory because of the difficulty cleaning it thoroughly and the difficulties and inadequacies o-P other cleaning methods.
A variation of the basic grid was to cut larger grids into two or more pieces, however, the basic cleaning dif~iculties remained requiring the use of t'he unsatisfactory cleaning procedures used on the basic ~rid. Users" thus, ~ound this variation unsatisfactory.
Another vari.ation of the basic grid was -to coat the grid in porcelain instead o~ chrome. The porcelain, however, becomes coated with residue during use simi:Lar to the basic grid. Again this variation still requires the unsatisfactory cleaning procedures as the 'basic ~rid, and thus, was ~ound to 'be unsatisfactory by users.
Mo~,t users, there~ore, would find it desirable to have a cooking grid which could provide a clean cooking surface more easily.
. ~
~ 7 ~3 Brle~ Sl~nmar~-~Ob~ects .And Ad~anta~os Accordingly several objects and advantages of my invention are: to provide a novel grid system for easily, reliably, neatly, quickly, and conYeniently providing a clean cooking surface, to provide a ~rid system which re~uires a minimum of skill and -training to U38, to provide a grid system which completely eliminates -the need to waste time and ener~y to perform the difPicult and frustrating job of cleaning a cooking grid.
In addition, more objects and advantages of my invention are: to provide a grid system compatible with barbecue grills, gas barbecues, broiler pans etc., to provide a ~rid system that can improve the taste and appearance of foods prepared on it by easily providing a clean cooking surface, thus, eliminating contact betwaen fre5hlY
prepared foods and old cooking residue, to provide a grid system that may result in health benefits, because scientific studies have shown that carcinogenic substances can be produced in burn-t ~ood, and since many users of unsati.sfactory prior art cooking grids are cooking food on a surface covered in old burnt food residue their health may be at riskl thus, because my invention provides an easier way to obtain a clean cooking surface proper use of my invention will eliminate contact between fresh food and old burnt cooking residue, therefore, health benefits may result for users of my invention.
~eader.s will find furthar objects and advantages of my invention from a consideration o-f the ensuing dascription and the accompaning G drawings-~ 7 Brief Descrip-tion Of ~xawing ~i~ur~s:
Fig. 1 shows a perspective view of a cover holder and a replaceable cover according to the invention.
Fig. ~ shows a back end elevation view o~ the cover holder of Fig. 1.
Fi~. 3 shows an enlarged perspec-tive view of the extensible bar and bracket of the cover hol~2r of Fig. 1.
E'ig. 4 shows a cross section view of the extensible bar and bracket alon~ the line 4 - 4 of Fig. 3.
Fig. 5 shows a perspective view of the underside of the replaceable cover of Fig. 1.
Fig. 6 shows a perspeotive view o~ the introduc-tion of -the replaceable cover to the cover holdex both of Fig. 1.
Fig. 7 shows a perspective view of the replaceable cover being partially ~i-tted to the cover holder both of Fig. 1.
Fig. 8 shows a perspective view of the replaceable cover being fully fitted to the cover holder both of Fi~.1 ~ 7 ~3 Fi~. 9 shows a perspectiYe view of a barbecue units upper body having the cover holder of Fig. 1 in place with its ~ront portion support~d above the front member of said body by the extensible bar of Fi~. 1 being in an extended position.
: Drawing Re~erence Nu~srals:
26 cover holder 28 replaceable cover 30 bars 32 front crossbar 34 rear crossbar 36 beveled corners of 30 38 ~aps between 30 40 lower portion of 30 42 uppex portion of 30 44 side of 42 46 bottom of 42 48 side o~ 40 50 T-joint spo-t weld.s joinirl~ 30 -to 32 ancl 34 52 extensible bar 54 bracket 56 pin of 52 58 frontal projection of 52 60 inverted U-shaped portion o~ 54 62 flan~es of 54 64 lap joint spot welds between 62 and 32 , 66 sleeves 68 marglns 70 wired edges 72 gaps between 66 74 sides of 66 76 opposing inwardly directed members o-f ~6 78 gaps between 7~
80 beveled corners of 76 82 barbecue unit upper body 84 OppQsing front member of 82 De~cri,ption O~ Pr~err~d ~mbodim~nt Fig. 1 shows a perspective view of the cover holder 26 and the replaceable cover 28 according -to the preferred embodiment of the invention. The holder 26 comprises a plurality of elon~ated T-shaped bars 30, prefera'bly made of an aluminium alloy and each having two 'beveled corners 36 loca-ted on the upper porti.on 42 and front end of each bar 30. The beveled corners 36 help to align and ease the sliding engagement of the replaceable covers elongated ge~erally retangular shaped sleeves 66 with the upper portion 42 of the bars 30. The bars 30 are equal lenghts and are aligned parallel to one another on an e~ual plane and are spaced equally apart creating gaps 38. The T-shape of each bar 30 is illustrated best in Fig. 2 which is a back end elevation view of the holder 26 of Fig. 1. The two main portions of each bar 30 is tha UPper portion 42 and the lower portion 40. The upper portion 42 to be slidingly engaged by the replaceable covers generally retangular shaped sleeves ~ of Fig. 1 .' 7(~3 6, 6, 7, and 8.
The bars 30 are held in place by a front crossbar 32 and a rear crosshar 34 which are both elongated retangular shaped bars with uniform sections throughou-t their entire lengths and which are preferably made of an aluminium alloy. The application of the bottoms of the front and back ends of hars 30 to the top of the front and rear cross bars 32 and 34 respectiveLy, forms T-joints which are spot welded 50 being indicated by the symbol for a spot weld from Patent and Trademark O~fice: Guide For Patent ~rafts~an: Washington, D.C.~ U.S. Government Printing Office, 1975.
Again referrin~ -to Fig. 2 the gaps 38 between the bars 30 and in particular the width of the gaps 38 between the sides 44 of the bars ~0 is determined mainly by the dimensions of the bars 30. The width of the gaps 33 can be as wide as is practical, however, they must not be -too narrow because the replaceable cover 28 is a one piece constru.ction. For example, -the replacaable co~er 28 could be constructed by folding a piece of reasonably strong and rigid aluminum foil over a form modeled a-.fter the cover holder 26 but having slightly larger dimensioned bars 30 to insure that the replaceable cover 28 resulting is large enough so that the sliding engagement of the replaceabla co~er 28 to the cover holder 26 does not produce excessive fric-tion. Before foldin~ the piece of foil over the form the foi:L is first cut in a pattern so that when it i5 placed on top of the form coverin~ the tops of the bars 30 and the gaps 38 -~ between them the cuts in the foil are down the middle of the foil ~
7 ~3 cover.ing the gaps .38 parallel to the bars 30. The foil on either side of the cuts and the foil extending beyond the outside edges of the extreme right and left bars .30 would then be folded down and over the sides 44 and bottom sides 46 o~ the bars 30. l'hus, the gaps 38 must be wide enough to insure enough ~oil is available to co~er sufficiently the sides 44 and bottom sides 4~ of the bars 30 adjacent the gaps 38.
Located on the top of the front crossbar 32 between two centrally located bars 30 and illustrated best in Fig. 3 and 4 is a means for supporting the front end of bars 30 above an apposing member in order to -facilitate the fitting of the replaceable cover Z8 to the holder 26. It is comprised of an extensible bar 52 and bracket 54. The ex-tqnsible bar is a small retangular shaped elongated bar preferably made o-f an aluminium alloY having a pin 56 which is inserted in a hole at the back end portion of the extensible bar 52 which prevents the extensible har 52 from being pulled free from the bracket 54, and a frontal projection 58 which is an upward right angle bend of the front end portion of the extensible bar 52 the end of which projects above the top of the brac.ket 54 but not so high as to interfere with the application of the replaceable cover 28. The frontal projection 58 can be ~rasped and pulled by the user to put the extensible bar 52 in an extended position, see Fig.9, or pushed to put the extensible bar 52 in a retracted position while preventing the extensible bar 52 -from heing pushed -free from the bracket 54.
The bxacket 64 is a one piece construction preferably made of an aluminium alloy. The bracket 54 provides a guide ~nd holder for the e~-tensible bar 52 while allowing the extensible bar 52 to be extsnded and retracted. It is comprised of a central portion 60 which is inverted U-shaped, and two flan~es 62 one on either side o~ the inverted U-shaped portion 60. The bracket 54 is a-ttached to the ~ront cross- bar 32 by spot welds ~4 indicated by -the symbol for a spot weld from Patent and Trademark Office: Guide For Pa~ent Draftsman:
Washington, V.C., U.S. Government Printing Office, 1975. The spot welds 64 are placed in the lap ~oints formed by the flanges 62 and the top of the ~ront crossbar 32, see Fig. 1. The length of the shortest sides of the bracket 54 is les.5 than the width of the surface of the front crossbar 32 on which it located. The bracket 54 is positiorled so that -the long side at the back of the bracket 64 is flush to the back ed~e of the front crossbar 32, thus, leaving the long side at the fron-t of the bracket 54 indented suf:eiciently throughout its length so tha-t when the extensible bar 52 is in its fully retracted position, illustrated best in Fig. 3~ the front edge of the frontal projection 58 does not extend beyond the front ed~e o~ the front crossbar 32.
The entire cover holder 26 including the extensible bar 52 and bracket 54 can be treated with suitable platings or coatings to enhance durability, however, this i5 not a necessity.
The dimensions of the cover holder 26 are determined by the specific application.
~ 7 ~3 The replaceab:le cover 28 oP Fig. 1 is also shown in a perspective view of its underside in Fi~. 5, and top perspeckive VietJs in Fig.
6, 7, and 8. The replaceable cover 28 is a one piece construction preferably made of reasonably strong and rigid aluminum foil, it mainly comprises a plurality of identical elongated generally retangular shaped sleeves 66 all aligned parallel to one another on an equal plane and spaced e~ally apart creating gaps 72. The sleeves 66 are the emale part of the engagement between the replaceable cover 28 and 'holder 26, the upper por-tion 42 of the bars 30 baing the male part of the engagement.
Shown best in Fig. 5 are specific features of the sleeves 66. From the top (bo-ttom in Fig. 5) of the sleeves 66 extending downward (upward in Fig. 5~ at right angles are sides 74. Extending inwardly at right an~les from the sides 74 are opposing inwardly directed members '76 each having 'beveled corners 80 at 'both ends. Gentrally locatecl between the mem'bers 76 are gaps 78 which run the sntire length of the sleeves 66.
When the replaceable cover 28 is fully en~aged with the holder 26, illustrated in ~ig. a, the sleeves 66 effec-tively cover the tops, sides 44, and bottom sides 46 of the bars 30 over the length of the sleeves 66 which is -the distanae between the inside edges of the margins 68. Although the tops and sides 74 of the sleeves 66 completely cover the t,ops and side.s 44 of the bars 30 over the length of the sleeves 66, the opposing inwardly directed members 76 do not $ completely cover the bottom sides 46 of the b~rs 30. The gaps 78 ~:~5~703 'betwaen the opposing inwardly directed members 76 is wider than ths :Lower portion 40 of the bars 30 so that during the sliding en~agement the opposed inside edges o the member.s 76 do not come in contact with the sides 48 of the bars 30, thus, preventing unwanted friction points. As mentioned earlier another way engagement friction is reduced is -that the top and sides '74 o~ the sleeves 66 are wider than the surfaces they cover namely the tops and sides 44 o~ the bars 30.
Ths 'bevels 80 on both ends of each opposing inwardly directed member 76 help to guide and ease -the engagement of the ].ower portion 40 of th0 bars 30 into the gaps 78 of the sleeve.s 66.
Two margins 68 one at each end of the sleeves 66 are perpendicular to the sleeves 66 and on the same plane as the tops O~e sleeves 66 which ~oin the inside edges of the margins 68 at 'both ends o~ the sleeves 66, thus~ holding the sleeves 66 in place. Fig. 6 shows a perspective view of the in-troduction o-~ the replaceable cover 28 to the holder 26. The bottom side of either margin 68 is plaaed on top o e the top front portion O:e bars 30, this sets the cover 28 on the correct plane for -the sliding engagement, and aids the user in aligning each sleevs 66 with its corresponding bar 30.
The structure o~ the sleeves 66 make the replaceable cover 28 quite rigid over the length of the sleeves 66. To make the replaceable cover rigid over its length perpendicular to the sleeves 66, the outside edge Oe each margin 68 is a wired edge 70. In this application~ however, wiras inside the edges are not necsssaxy.
The dimensions of the replaceable cover 28 are determined by the dimensions of the holder 26.
Opera-tion O:~ Pxe~erred Embodi~ent The cover holder 26 having a replaceable cover 28 shown in perspective views in Fig. 11 6, 7, and 8 is one embodiment ~hich is suitable ~or use in many barbecue grills, and most ~as barbecues.
Thess applications are such that when a cooking ~rid is installed in a unit it is usually suppor-ted by at least two small ledges on which the bottoms of crossbars 32 and 34 would rest Installation of the holder 26 simply requires the usex to lift out the old cooking grid, if one is in place, and replace it with a relevant sized holder 26 having its top side facing up and the front crossbar 32 at the ~`ront of the unit, and the bottoms of the crossbars 32 and 34 resting on the supportin~ ledges. In many of the applications cited the holder 26 restin~ on the supporting ledges would be held on a plane inside a body 82 surrounded by opposing members, as illustrated in Fig. 9.
The best method to apply a replaceable covex 28 to the holder 26 in applications similar to that ill~strated in Fig. 9 is as follows:
First, the user must make sure that the unit is not emitting any heat and that the holder 26 is cool enough to be handled. Second, with one hand the user will grasp the upper portion 42 of a central bar 30 near its front end and then lift the ~ront o~ the holder 26 and in ~2~7~3 particular the front crossbar 32 above the opposing front member 84 while the rear cro.ssbar 34 remains on its supporting ledge and acts as a pivot point. While holding the holder 26 in this positio-n the user with his other hand then grasps the frontal projection 58 of the e~tensible bar 52 and pulls the extensible bar 52 into its fully extended position. Third, the user lower.s the front of -the holder 26 so that the bottom of the extensible bar 52 rests on the top of the opposing front member 84, see Fig. 9. This position leaves the front crossbar 32 below the opposing front member 84, thus, preventing the holder 26 from being able to be pulled foxward and free of the body 82~ while also elevatin~ the front of bars 30 above the opposing front member 84. This frees the users hands to ~it a replaceablc cover 28 to the ho].der 26.
Fourth, the user holds the replaceable cover 2~ with its top facing up and places either margin 68 parallel to the ~ront crossbar 32 and on top of the front end o e the bars 30~ Either margin 68 can be used as the leading edge because both halves of the replaceable co~rer 28 divided parallel to the margins 68 are identi.cal. Now the user aligns the replaceable cover 2~ 50 that each sleevo 66 is in line with its corresponding bar 30, as shown in Fig. 6. The margin 68 resting on top of the bars 30 automatically sets the correct height for the cover 28 to be slidingly engaged on to -the holder 26. Fifth, while holdin~ the replaceable cover 28 on the same plane as the holder 26, the user then pushes it on to the holder 26 bY its outside wired edge
3 70, see Fi~. 7. Finally, with the replaceable cover 28 fully fitted to the holder 26, see Fig. 8, the user grasps the front upper portion ~ 7 ~3 42 of a central bar 30, now covered by the replaceable cover 28, arld lifts the front of the holder 2B off the opposing ~ront memher 84.
The user then retracts the sxtensible bar 52 by pushing on the frontal projection 58 and then lowers the ~ront crossbar ,32 of the holder 26 on to its supporting ledge in the body 82. The holder 26 wi.th the replaceable cover 28 fitt,ed to it, forms an operative cooking grid that is read.y for use.
To remove a replaceable cover 28 from the holder 26 the user completes the first three steps above. Then the user grasps the replaceable cover 28 by its outside wired edge 70 at the front of the holder 26, and then pulls the cover 28 towards himself on the same plane as the holder 26.
In some of the applications c~it,ed the opposing front member 84 of the body 82 is low enough so tha-t when the holder 2B is in position in the unit's body resting on its suppor-ting ledges the opposing front member only obstructs the front crossbar 32 and perhaps the lower part of the lower portion 40 at the front of the bars 30. This usually provides enough clear~nce for removing or fitting a .replaceable cover 28 without having to elevate the front of the cover holder 26.
____________________________________________________ ~J.,, ~ 3 While the above description contains many specifities, the reader should not construe these as limitations on the scope of the invention, bu-t merely as exemplifications of preferred embodiments thereo~. Those skilled in the ar-t will envision many other possible variations that are within its scope. For example, skilled artisans will readily be able -to change the dimensions and shapes of the various embodiments. They will be able to make the holder and replaceable cover of alternate materials, such as other metals, ceramics, and even some plastics. They can put different platings or coatings on the holder, for example, porcelain. They could make the holder and replaceable cover in a combination of pieces. They could change the number of bars, crossbars, etc., and could also change their dimensions and shapes. They could cast the holder in one piece or use bonding al-ternatives to welding. They could make the holder to be supported in a barbecue urlits body by more than two ledges, by using a central post, or by cantilevering the holder etc.
They could construct the replaceable cover out of separate joined pieces rather than one piece. They could eliminate the extensible bar and bracket leaving it to the user to locate the holder in a position to facilitate fi-ttin~ and removal o~ the replaceable cover, or they could change the dimensions and shape of the extensible bar and bracket, or provide another means attached to the holder for supporting the front of the bars above an opposing member.
Another alternative to a means attached -to tha holder for supporting the front of the bars above an opposing member is to provide the user with a separate bracket having a projecting ledge. After the front of ~ 3 the holder has been raised above an opposing ~ront member of a unit's body the bracket would be hung on the opposing member with its projecting ledge ~acing the holder. Then when the ~ront of the holder is lowered the bottom of its front crossbar ~7ill rest on the brackets projecting ledge, thus, being supported with -the ~ront end of its bars above the opposin~ member o~ the unit.
My invention can also be mated with a broiler pan for oven cooking and can he altered to per~orm ~unctions other than providing a clean cooking ~rid sur~ac~. Those skilled in the art would readily be able to adapt my invention to other grid like structures. For example, by adding a flange around the perimeter o~ the holder on the same plane as the crossbars, and also obs-truct.ing the back end of each bar, the resulting grid system comprising a holder and a replaceable cover could be used to replace vent registers or grills etc., for app].icatlons in which the outer surface of the register or ~rill becomes .incrusted with a residue which must be removed periodically.
In ~act! almost any grid like structure could be replaced by an embodiment o~ my invention, whether ~or cooking or otherwise.
Accordin~ly, the reader is re~uested to determine the scope o~ my inven-tion by the appended claims and their legal equivalents, and not by the examples which have been given.
The user then retracts the sxtensible bar 52 by pushing on the frontal projection 58 and then lowers the ~ront crossbar ,32 of the holder 26 on to its supporting ledge in the body 82. The holder 26 wi.th the replaceable cover 28 fitt,ed to it, forms an operative cooking grid that is read.y for use.
To remove a replaceable cover 28 from the holder 26 the user completes the first three steps above. Then the user grasps the replaceable cover 28 by its outside wired edge 70 at the front of the holder 26, and then pulls the cover 28 towards himself on the same plane as the holder 26.
In some of the applications c~it,ed the opposing front member 84 of the body 82 is low enough so tha-t when the holder 2B is in position in the unit's body resting on its suppor-ting ledges the opposing front member only obstructs the front crossbar 32 and perhaps the lower part of the lower portion 40 at the front of the bars 30. This usually provides enough clear~nce for removing or fitting a .replaceable cover 28 without having to elevate the front of the cover holder 26.
____________________________________________________ ~J.,, ~ 3 While the above description contains many specifities, the reader should not construe these as limitations on the scope of the invention, bu-t merely as exemplifications of preferred embodiments thereo~. Those skilled in the ar-t will envision many other possible variations that are within its scope. For example, skilled artisans will readily be able -to change the dimensions and shapes of the various embodiments. They will be able to make the holder and replaceable cover of alternate materials, such as other metals, ceramics, and even some plastics. They can put different platings or coatings on the holder, for example, porcelain. They could make the holder and replaceable cover in a combination of pieces. They could change the number of bars, crossbars, etc., and could also change their dimensions and shapes. They could cast the holder in one piece or use bonding al-ternatives to welding. They could make the holder to be supported in a barbecue urlits body by more than two ledges, by using a central post, or by cantilevering the holder etc.
They could construct the replaceable cover out of separate joined pieces rather than one piece. They could eliminate the extensible bar and bracket leaving it to the user to locate the holder in a position to facilitate fi-ttin~ and removal o~ the replaceable cover, or they could change the dimensions and shape of the extensible bar and bracket, or provide another means attached to the holder for supporting the front of the bars above an opposing member.
Another alternative to a means attached -to tha holder for supporting the front of the bars above an opposing member is to provide the user with a separate bracket having a projecting ledge. After the front of ~ 3 the holder has been raised above an opposing ~ront member of a unit's body the bracket would be hung on the opposing member with its projecting ledge ~acing the holder. Then when the ~ront of the holder is lowered the bottom of its front crossbar ~7ill rest on the brackets projecting ledge, thus, being supported with -the ~ront end of its bars above the opposin~ member o~ the unit.
My invention can also be mated with a broiler pan for oven cooking and can he altered to per~orm ~unctions other than providing a clean cooking ~rid sur~ac~. Those skilled in the art would readily be able to adapt my invention to other grid like structures. For example, by adding a flange around the perimeter o~ the holder on the same plane as the crossbars, and also obs-truct.ing the back end of each bar, the resulting grid system comprising a holder and a replaceable cover could be used to replace vent registers or grills etc., for app].icatlons in which the outer surface of the register or ~rill becomes .incrusted with a residue which must be removed periodically.
In ~act! almost any grid like structure could be replaced by an embodiment o~ my invention, whether ~or cooking or otherwise.
Accordin~ly, the reader is re~uested to determine the scope o~ my inven-tion by the appended claims and their legal equivalents, and not by the examples which have been given.
Claims (6)
Claims: I Claim
1. A grid system comprising a replaceable cove, a cover holder, and an engagement means for releasably interconnecting said replaceable cover with said cover holder by a longitudinal sliding motion, said cover holder comprising a network of supporting bars, said replaceable cover comprising a network of open sleeves, said bars and said sleeves being shaped relative to one another to permit said sleeves to be longitudinally fitted to or removed from said bars, said bars provided with longitudinal outwardly projecting members, said sleeves provided with longitudinal opposed inwardly directed members which engage said outwardly projecting members of said bars when said replaceable cover is pushed longitudinally on to said cover holder forming an operative grid, whereby: in the event of said operative grid becoming soiled said replaceable cover can be removed from said cover holder by a longitudinal sliding motion and a new replaceable cover can be fitted to said cover holder by a longitudinal sliding motion to provide at least one clean outer surface on said operative grid.
2. The grid system of claim 1 wherein each of said supporting bars in section is shaped like a capital letter t.
3. The grid system of claim 1 wherein each of said open sleeves in section is shaped like the horizontal member of a capital letter t and having a gap which corresponds to the intersection of the vertical member of said capital letter t with said horizontal member of said capital letter t.
4. The grid system of claim 1 wherein said cover holder further includes an elevation means for temporarily supporting at least one outside edge of said cover holder above an opposing member.
5. The grid system of claim 4 wherein said elevation means comprising an extensible bar being releasably held by a bracket, said extensible bar and said bracket being shaped relative to one another to permit said extensible bar to be extended and retracted.
6. A grid system comprising: a replaceable cover, and a means to support said replaceable cover, said replaceable cover and said support means being shaped relative to one another to permit said replaceable cover to be fitted to or removed from said support means, said support means comprising a plurality of elongated bars being aligned parrallel to one another and spaced apart and being supported by at least one crossbar secured to the lower portions of said elongated bars, said elongated bars in section being provided with outwardly projecting members, said replaceable cover comprising a plurality of open sleeves, said sleeves in section being shaped relative to said bar sections to permit engagement of said sleeves with said outwardly projecting members of said bars when said replaceable cover is pushed longitudinally on to said support means forming an operative grid, said replaceable cover when fitted to said support means at least one side of said replaceable cover forms an outer surface of said operative grid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000542114A CA1251703A (en) | 1987-07-15 | 1987-07-15 | Grid system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000542114A CA1251703A (en) | 1987-07-15 | 1987-07-15 | Grid system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1251703A true CA1251703A (en) | 1989-03-28 |
Family
ID=4136079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000542114A Expired CA1251703A (en) | 1987-07-15 | 1987-07-15 | Grid system |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1251703A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008112494A1 (en) * | 2007-03-09 | 2008-09-18 | American Griddle Corporation | Grill plate |
-
1987
- 1987-07-15 CA CA000542114A patent/CA1251703A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008112494A1 (en) * | 2007-03-09 | 2008-09-18 | American Griddle Corporation | Grill plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |