DE2543666A1 - Laminated construction heat retentive crockery - has alternate elevations and depressions at rim edge for interlocking by rotation - Google Patents

Abstract

The item of heat retentive crockery consists of two equal shell type half sections which fit together by their outer edges using a system of elevations and depressions cut into the edges of the half sections. The half sections (1) are constructed in a circular pattern with a regular elevated (5) and depressed (6) edge section around their peripheries. The design of the edge is such that a relative rotation of less than 20 deg. is sufficient to interlock the shell half sections. The crockery carries heat insulating particles (8) in the gap between its inner and outer shells.

Description

Warming dishes

The invention relates to a warming ware with two identical bowl-shaped, as a lower part and cover with their opening edges in mutually open position on top of each other adjustable crockery parts with raised edges that interlock when placed on top of each other and depressions.

Such warming dishes are intended to hold hot dishes between a food counter and a place where it is relatively distant to prevent heat loss to protect, for example in hospitals or the like. The warming dishes usually serve as iiüllgeschirr for a food carrier such as a plate or Key. However, it is also possible to use the lower part directly as a food carrier use.

Such dishes are known from OB-PS 928 857.

The two crockery parts point into the bottom and to the outside inclined wall ovelen outline suf, as well as a surrounding wall adjoining the wall Flanged edge, which widens to a grip edge on both long sides and in this Area slightly curved towards the floor: i rt, on the flange edge are both Long sides each have a groove-shaped recess and an equally-sized groove-shaped recess Arranged increase in such a way that the two depressions and the two bumps each on one at about 45 degrees to the longitudinal axis of the Oval's inclined diagonal lie opposite and move in the direction of this diagonal extend. With this warming ware, the lid can be opened with the opening Place on the bottom of the lower part only in two specified directions, in each case the real main axes of the crockery parts coincide. Engage in these positions the elevations of the lid edge into the depressions of the lower part edge and the depressions of the lid edge lie on the elevations of the lower part edge. In order to put the lid on, a rotation of up to 90 degrees may be necessary necessary. This requires increased attention when putting on the lid and results in a loss of time which, viewed individually, does not appear high. He must however, it is multiplied by the number of dishes served, which are who use such warming utensils is usually very large.

The object of the invention is to provide a warming utensil of the type described at the outset Art of creating in which both pieces of crockery without special attention and rotating movement are positively and securely stackable on top of one another.

The object is achieved in a simple manner in that the dishes circular and the edge elevations and depressions evenly at such intervals arranged and formed in the circumferential direction with such a corrugation or inclination are that when they are placed on top of each other at most after a relative rotation about one automatically slide into the locking position at a small angle of rotation of no more than 20 degrees.

With such a design of the goods holding harness is when putting on of the lid no special offer: required, since a relative drill hole in the specified roe order, if it is necessary at all, is carried out involuntarily and during the touchdown movement without loss of time. Furthermore, it is not necessary, as is the case with the known warming utensils, the lid with a certain degree of caution, that is, slowly to the point where the two of them are in direct contact with each other Put the edges on the lower part. 'Rather, he can do something beforehand, at the first Touching the profile, let go, and then glides gently automatically into the form-fitting, tight contact point. This results in a further simplification of work and time savings that, multiplied by a large Number of food carriers to be covered, is of considerable importance. By the sliding movement of the cover with respect to the lower part is also a jerky movement of the lower part thereby avoiding possible spillage of the contents. Warrii harness is also used made of sensitive and / or fragile material. about the said In addition, such edge profiling is advantageous for dishwashing, because leftovers can be removed more easily from the wavy or sloping surfaces than from narrow grooves or cup-shaped depressions.

In a preferred embodiment, the edge depressions form and elevations a continuous corrugation of the edge. A twisting motion at This practically eliminates the need to touch it down. Even if when facing each other the vertices of the respective elevations of the base and cover exactly on top of each other meet, a slight inclination of the 'cover to the horizontal and / or is sufficient when putting on or

Letting go of minimal shaking of one of the two crockery parts to transform that unstable equilibrium into a snap-in sliding motion. aside from that the continuous corrugation makes it easy for the operator to put on obvious and gives a good grip at every point on the edge. About that it also gives the dishes an attractive appearance.

A simple putting on of the lid with an unconsciously to be carried out small relative rotational movement can easily be achieved with five increases in the margin and achieve a corresponding number of deepenings. Since peaks and valleys in must be arranged evenly, arises between the apex an elevation and the lowest point of the adjacent depression an angular distance of 36 degrees, caused by the corrugation or inclination of the profile on both sides forth is reduced at least so far that a rotary movement by about half Angular amount guaranteed in any case an automatic sliding into the locked position.

In a preferred embodiment with continuous corrugation the division of the edge profile is about 15 degrees, i.e. the edge has 24 elevations and just as many indentations. This allows a direct and relatively steep Transition from elevation to depression, which ensures a good fit without rotation is required at all when touching down.

The edge profiling can advantageously be cut in the circumferential direction roughly form sine waves. This profiling can be questioned for all harnesses attach coming materials in a simple way. It is easy to grip and enables easy cleaning.

The edge profiling can be attached to the edge of the vessel in such a way that the edge depressions run out into a flat inner edge step of the piece of crockery. The piece of crockery can thus open a relatively wide edge without this must be profiled in full width. With double-walled dishes, the level Step are formed by the inner wall, so that the profiled edge over the outer wall survives.

At the same time, the profile edge can connect the two Walls represent.

In another embodiment, the edge profile can be over the inner be arranged flat edge step on an upstanding wall edge. The wall needed so no flange edge and is still easy to grasp. Furthermore, the high standing offers Wall edge additional protection against the leakage of food, which is about on the inside level edge step are reached.

An advantageous further development of the warming utensils according to the invention provides that the crockery parts in the area of the bottom elevations and depressions have in evenly divided intervals, as well as in the circumferential direction with such Corrugation or inclination are formed that they at most when placed on top of each other automatically after relative rotation through a small angle of rotation of at most approx. 200 slide into the locked position. In this way there are several closed dishes just as quickly and easily and safely put on top of each other as it is with the individual crockery items the case is. This is essential because one operator takes turns taking turns Closes warming utensils and then stacks the closed ones on top of another, hen stacking requires special attention, this closing attention not switch off ??, which is a significant advantage of the edge formation according to the invention would get lost.

A corresponding floor training allows the movements during Closing the warming utensils and when stacking equally involuntarily and to be carried out quickly.

In a preferred embodiment, the raised floors and run - Depressions radially towards the Ivlit-t; el point.

This results in an advantageously low overall height for the crockery item, Furthermore, easy cleaning, even in dishwashers, as the rinsing water drains off easily can.

Especially for crockery items with which the upper and the lower Edge have the same shape and size, an embodiment is advantageous, in which the crockery parts are profiled in the area of a supporting edge of the bottom of the opening edge have corresponding elevations and depressions.

Such crockery items can also be stacked with aligned openings stacked or covered by each other.

The similar profiling on the upper and lower edge area awakens in addition, the impression of similar ornamentation and overwrites the pure Efficiency.

Further details of the invention can be found in the drawings illustrated embodiments and the description. It show: Sigo 1 two closed warming utensils stacked on top of each other, partly broken off, Fig. 2 a fragment of a piece of crockery in a different embodiment, FIG. 5 a fragment of a crockery part of a further embodiment, Figure 4 two stacked one inside the other Crockery parts of a further embodiment in section, and FIG. 5 5 another Embodiment of a piece of crockery in section.

Each of the two warming utensils shown in FIG. 1 placed one on top of the other consists of two completely identically designed crockery parts 1. They show in all Areas circular outline. Both crockery parts 1 are with their opening edges 2 open to each other. The upper hotplate supports itself with the bottom of its lower part of the harness on the one facing upwards Bottom 3 of the upper crockery part of the lower warming utensils. All dishes 1 have walls 4 which are inclined conically outwards from the bottom 3 to the opening edge 2 on.

The opening edges 2 each protrude from the wall 4 like a flange towards the outside and extend sinusoidally in a plane approximately parallel to the bottom 3 corrugated, so that there are raised edges 5 and 6 edge depressions. When facing each other two pieces of crockery as a lower part and a lid grip the in this position downwardly directed raised edges 5 of the lid into the edge depressions 6 of the lower part and the edge recesses 6 of the lid are based on the raised edges 5 of the Form-fitting from the lower part. The edge profiling of each piece of crockery runs around the entire circumference continuous with twenty-four raised margins and twenty-four Edge depressions.

The crockery parts 1 have a profiled edge area of their bottom 3 Support edge 7 on. The profile consists of elevations 7a and depressions all around 7b, when two crockery parts 1 are placed on top of one another, form-locking with their bottoms interlock and thus enable non-slip stacking. In Fig. 1 is the profiling of the supporting edge with rounded trapezoidal elevations and depressions shown to another way to show the profile shape. In the VJarmhaltegeschirr with inclined wall rings 4 shown in Fig. 1 comes a stacking: floor on Gffnuligsrand, out of the question anyway. Still, it will for aesthetic reasons, but especially for straight-walled dishes on the The same profiling was chosen at the bottom and at the edge of the opening.

The warming dishes according to Fig. 1 are made of metal, but can also? tUS ceramic, porcelain or plastic, single or double-walled be.

Fig. 2 shows a fragment of a piece of crockery 1 'of another embodiment. It consists of an inner and an outer shell part 1'a and 1'b, which are in the The area of the bottom 3 'and the wall 4' have a space between them, which is filled with thermal insulation material 8, here foamed plastic. Of the inner shell part 1'a goes in the area of the opening edge with the formation of a rim step 9 for direct contact with the outer shell part 1'b, and forms a In Fig. 1 wrlaufenden in sine waves, protruding outward beyond the wall 4 ' Flanged edge with elevations 5 'and depressions 6'. The deepest area of the edge depressions 6 'is at the level of the edge step 9. The arches formed by the profiling are closed to the inside of the vessel, open on the sides to the outside of the vessel. When closed The interlocking opening edges stand over the walls to the outside and serve as a grip edge. The bottom 3 'has a circumferential, non-profiled supporting edge 7 'suf.

The embodiment of a piece of crockery 1 ″ in FIG. 3 differs differs from that according to FIG. 2 by the formation of the opening edge 2 ??. The two Above the edge step 9 adjacent edge areas of the inner shell part 1 "a and the outer shell part 1" b in alignment with the outer wall. The increases 5 "and the wells 6" are only by the licllllng the upper edge formed. It corresponds to a 1 stretched, very flat wave, with twelve elevations and just as many depressions on the circumference continuously. at Closed warming utensils of this design do not remain on the outer wall the crockery parts protruding outwards.

In Fig. 4, the two crockery parts 1 ″ are in the same direction in section directed opening stacked one inside the other. The crockery parts are double-sided like the embodiments according to FIGS. 2 and 3, the floors 3 ″ have a circumferential profiled support edge 7 "t with rounded trapezoidal elevations. The opening edge 2 '' 'also has a profile with rounded trapezoidal shapes that are continuous running around. In contrast to the embodiments discussed so far, there are in the edge area both the inner shell part 1 ?? 1a and the outer shell part 1 "b in the edge area Flange-like without the formation of an inner edge step bent outwards and lie there to each other. The massive professionalization is on this flange edge put on.

Fig. 5 shows a further embodiment of a crockery part 1 "t with double wall and double floor. The outer shell of the soil shows in their Edge area a profiling of raised floors 7 "'a and depressions 7"' b, which taper towards the center point. The downward protruding elevations form the support surface for the floor, the central area of which is approximately in the height between the ridges and the depressions. The raised ground 7 '' 'a and the bottom depressions 7' '' b are approximately wave-shaped and slide directly into one another when stacking or with a slight rotation of the dishes the stack sits securely and non-slip on top of one another.

The warming dishes according to FIGS. 2 to 5 are made of plastic. However, it is also possible to manufacture the inner and outer shell parts from metal.

Claims (17)

P a t e n t a n 5 p r ü c h e X Warming dishes with two identical ones shell-shaped, as a lower part and lid with their opening edges in each other open position stackable crockery parts with one on top of the other gripping edge elevations and depressions, d a d u r h g e k e n n -z e i c n e t that the crockery parts (i) are circular and the raised edges. (5) and wells (6) evenly arranged at such intervals as well as in Usfangsrichtun.g with such corrugation or inclination are formed that they are placed on top of each other possibly after relative rotation by a small angle of rotation of at most approx. Automatically slide 20 degrees into the locking position. 2. Tableware according to claim 1, d a d u r c h g e k e n n -z e i c h n e t that the edge elevations 0r) and depressions (6) have a continuous corrugation of the opening edge (2). 3. Tableware according to claim 1 and 2, d a d u r c h g e -k e n n z e i c h n e t that each piece of crockery (1) has at least five raised edges (5) and - has recesses (6). 4. Tableware according to at least one of claims 1 to 3, d a d u r c h g e k e n n n z e i c h n e t that the division of the edge contouring (5, 6) is about 15 degrees. 5. Tableware according to at least one of claims 1 to 4, d a d u r c h g e k e n n n z e i c h n e t that the edge profiling (5, 6) in the circumferential direction cut roughly forms sine waves. 6. crockery according to at least one of claims 1 to 4, ad u r c h g e k e n n n n z e i c h n e t that the edge profile (5, 6) is approximately rounded trapezoidal. 7. Tableware according to at least one of claims 1 to 6, d a d u r c h g e k e n n n n e i c h n e t that the edge depressions (6) in a flat interior The edge step (9) of the crockery item (1) run out. 8. Tableware according to at least one of claims 1 to 7, d a d u r c h g e k e n n n z e i c h n e t that the edge profile (5, 6) has an inner, flat edge step (9) is arranged on an upstanding wall edge. 9. Tableware according to at least one of claims 1 to 8, d a d u r c h g e k e n n n z e i c h n e t that the crockery parts (1) in the area of the floor (3) Elevations (7a) and depressions (7b) at evenly divided intervals have, as well as formed in the circumferential direction with such corrugation or inclination are that when they are placed on top of each other at most after a relative rotation about one small angle of rotation of at most approx. 200 automatically slide into the locking position. 10. Tableware according to claim 9, d a d u r c h g e -k e n n z e i c h n e t that the floor elevations (7 "'a) and depressions (7"' b) radially to the center to run out. 11. Tableware according to claim 8 or 10, d a d u r c h g e k e n n z e i c h n e t that the bottom profile (7a, 7b) is wavy or trapezoidal. 12. Tableware according to at least one of claims 1 to 11, d a d u It is noted that the crockery parts (1) are in the area of a supporting edge (7) of the floor (3) the opening edge profile (5, 6) corresponding Have elevations (7a) and depressions (7b). 13. Tableware according to at least one of claims 1 to 12, d a d u R e k e k e n n n e i n e t that the crockery items (1) except for the area the edge profile (5, 6) are double-walled. 14. Tableware according to claim 13, d a d u r c h g e k e n n -z e i c h n e t that between the double walls (la, 1b) contain heat insulating material (8) is. 15. Tableware according to at least one of claims 1 to 14, d a d u It is noted that the crockery parts (1) are made of plastic. 16. Dishes according to at least one of the requirements 1 to 14, d a-d u It is noted that the crockery parts are made of metal. 17. Tableware according to at least one of claims 1 to 14, d a d u r c h g e k e nn n z e i c h n e t that the crockery parts (1) made of porcelain or Ceramics.