LU82519A1 - ROTARY KNIFE - Google Patents

Description

8 a p. rt L — 2518

/ h 1 (HAND-DUCHY OF LUXEMBOURG

............................ j "..... I W

of ........................ KftJ® Mister the Minister of Economy and the Middle Classes

Title issued ......................................... 1¾¾¾ Intellectual Property Service

"~ LUXEMBOURG

Patent Application I. Application

Part Industries Inc.f ...... 8480 Beverly Boulevard ...... Los Angeles, ............ „(1)„ CA 90048, EUA, represented by Jean Waxweiler, 2T-2'5 '"Allee ScfrëfferyLûxë ™ 5 ° ^^ de ................................... ..

.................................................. .................................................. .................................................. .................................................. ................................................. ( 2) agent deposits (s) this ...... Qnze ...... ..cen.t ..... guatr.e-.Ming.t __________________________________ (3) at ...... ... hours, at the Ministry of the Economy and the Middle Classes, in Luxembourg: 1. this request for obtaining a patent of invention concerning: ............. .................................................. .................................................. .................................................. .................................................. .................................................. ..- (4)

Rotary knife.

2. delegation of authority, dated Los Angeles, CA on __________. 1.8 ..... April ..... 1980 3. description in language .........._________________________ of the invention in two copy; 4 ............ 1 ................. drawing boards, in two copies; 5. the receipt of the taxes paid to the Luxembourg Registration Office on ...... eleven June nineteen thousand ..... one hundred and eighty .............. .................................................. ............................................

declares (s) assuming responsibility for this declaration, that the inventor (s) is (are): Pieter K.d. De Coster, Dr. A. Goffaertstraat 69, B-9300 Aalst ^ claim) for the above patent application the priority of one (s) application (s) of (6) ........... .................... JareYfijtu _............................. ... filed in (7) ........................ E.-ILÜ ........... .................................................. .....................

on the sixteenth of August one thousand nine hundred and seventy-nine sous .le ... no .., .................... (8) ...... 066.900 in the name of ......... P.ie.tex ..... K ... J ......... Da ... Co.ster ...... .................................................. .................................................. ................................. (9) elect (elect) for him / her and, if designated, for his representative, in Luxembourg ....................................

* j.ean • Wa-xweiler-r-2-l - »- 2-5. · - Allée S-chof f erT Luxembourg .................... ................................................ (1 °) 'requests (nt) the issuance of a patent for the subject described and represented in the abovementioned appendices, - with postponement of this grant to ............... .L ........................................ month. (11)

The . ... 1 mandata ir ^ ....................

i. IL Notice of Filing * The above application for a patent for invention has been filed with the Ministry of the Economy and the Middle Classes, Intellectual Property Service in Luxembourg, dated: 11.06.1980] _5 "Ργ · Minister h to ................................ hours />. * Economy and Average'lbjasses, ^ v \ 1 /! 'Wm f) û n A 68007 \ ^ IV' / / * PRIORITY REUENDICATIQN Filing of the patent application in the USA

of August 16, 1979 δοι * δ I · number 066.900

DESCRIPTIVE MEMORY FILED IN SUPPORT OF A PATENT INVENTION APPLICATION IN THE GRAND DUCHY OF LUXEMBOURG

DART INDUSTRIES INC.

by;

j3OW> r. ROTARY KNIFE

• 1

The present invention relates to a rotary knife, more particularly to a rotary knife for pastry doughs.

Con-5 pastry knives usually come in one or more cutting discs or wheels, mounted on a single axis. Knives comprising several cutting disks are generally adjustable in order to be able to cut a sheet of pastry dough into strips or strips of various widths, and this by adjusting the position of the disks along the axis.

* Generally, such knives are of a rather complex construction, supposing the use of numerous elements, generally made of metal, and because of their complexity, these knives are not easily adjustable to cut a sheet of pastry dough. in strips of varying widths.

In the patent of the United States of America No. 663,262, there is provided a device for cutting noodle dough, this device comprising neck-20 panls discs rotatably mounted on a common axis for cutting the dough into strips of various widths, by inverting the device. However, the structure proposed by this patent is of a rather complex construction, requiring the production of many distinct elements.

The object of the present invention is to provide a knife of the improved rotary type, which is particularly suitable as a pastry tool.

According to a preferred embodiment of the present invention, the rotary pastry knife 30 consists of a very simplified device, formed from relatively few constituent elements which are molded in one piece from a synthetic polymer. The device thus molded in one piece can be easily separated into constituent elements which, when assembled without the need for special tools, provide a very simplified pastry tool with multiple uses.

As all the components of the knife according to the preferred embodiment 5 are formed of a polymer, this avoids the problems associated with corrosion.

A particular advantage of the invention is further constituted by the significant saving made during production, since it is a construction 10 made entirely of a polymer.

The invention, as well as its characteristics and advantages, can be better understood from the following description given with reference to the accompanying non-limiting drawings.

Figure 1 is a perspective view of a preferred embodiment of a rotary pastry knife according to the invention, this view showing the cutting of relatively narrow strips of pastry dough.

Figure 2 is a perspective view of the rotary pastry knife according to the present invention, this view showing use as a cutting wheel.

Figure 3 is a perspective view of the rotary pastry cup according to the invention, this view showing the cutting of relatively wide strips of dough.

FIG. 4 is a view in longitudinal section, on a larger scale, of the rotary pastry knife 30 according to FIGS. 1 to 3.

Figure 5 is a sectional view taken along arrows 5-5 of Figure 4.

Figure 6 is a sectional view taken along arrows 6-6 in Figure 4.

3

Figure 7 is a perspective view of a part molded in one go and comprising the constituent elements of the device of the present invention.

According to Figures 1, 2 and 3, the rotary knife 5-pastry generally designated by the reference numeral 10 comprises a body with spaced side walls 12 and 14 connected together by an upper wall 16. In the As a preferred embodiment which is illustrated, the upper wall 16 consists of a curved extension of the side walls 12 and 14. These are kept in a generally parallel position as will appear more clearly from the following description.

The knife 10 has two axes. 18 and 20 mon-15 rotational tees in the body of this knife, and more particularly in the spaced side walls 12 and 14. The axes 18 and 20 are generally parallel between them and spaced in a longitudinal direction, being generally but not necessarily-20 in a common horizontal plane.

According to the preferred embodiment of the rotary knife 10, at least three cutting discs 22, 24 and 26 are provided, one of these discs, namely the disc 22, being mounted on one of the axes, namely the axis 25 18, while the other two discs 24 and 26 are mounted on the other axis 20.

As can be seen by comparing Figures 1, 2 and 3, illustrating the use of the rotary knife 10, a sheet of pastry dough 28 or similar material is shown as being spread on a flat surface, having a general horizontal, such as a pastry table, not shown, on which a portion of dough has been rolled to form a sheet.

In Figure 1, we can see that when 4 4 the user grasping the side walls 12 and 14 of the rotary knife 10 between the thumb and forefinger moves this knife across the sheet of dough 28 while the three discs cutting 22, 24 and 26 are in rotational and cutting contact with the dough 28, two relatively narrow strips of dough 30 and 32 are cut from the sheet of pastry dough 28. It will be understood that, when the rotary knife 10 according to the mode illustrated in Figure 1, where the discs 22, 24 and 10 26 are of equal diameter, the knife body is generally horizontal with respect to the plane of the support surface of the dough sheet 28, when the axes 18 and 20 are in a common horizontal plane.

It will also be understood that the shafts 18 and 15 20 need not necessarily be in a common horizontal plane relative to the body of the rotary knife 10, since such an interrelation, as well as the spacing in the longitudinal direction between the two parallel axes 18 and 20, can be modified selectively according to the diameter of the cutting discs 22, 24 and 26. In this latter respect, it will generally only be necessary for the cutting discs located on a given axis to be of the same diameter so that the rotary knife 10 acts according to the present invention.

In the case of FIG. 2, it can be seen that the body of the rotary knife 10 is presented in rotational and cutting contact, on the dough sheet 28 so that the common plane of the axes 18 and 20 does not lie horizontally with respect to the support surface of the dough sheet 28, only the disc 22 being in rotational and cutting contact with the dough sheet 28 as will normally be the case when cutting a sheet dough in a desired geometric shape.

If we look at Figure 3, we can see that the user, by grasping the rotary knife 10 in the manner described above, puts the cutting discs 24 and 26 in rotational and cutting contact with the sheet of dough 28, so as to cut it to create a wide strip or strip 34 of dough. It will be understood that, in this case, the user presents the rotary knife 10 in cutting contact with the sheet of dough 28 so that the common plane of the axes 18 and 20 is inclined in an opposite manner with respect to the case of FIG. 2.

Referring to FIG. 7, it will be seen that the rotary pastry knife 10 is illustrated therein as being constituted by a single molded part, as formed by traditional injection molding techniques, by being made up of a suitable synthetic polymer, such as polypropylene, high density polyethylene, etc., having suitable physical properties, for example rigidity at ambient temperatures, etc. It can be seen that the body of the rotary knife 10 comprises the side walls 12 and 14 and, in extension, the curved upper wall 16. For the assembly of the components of the rotary knife 10 to arrive at the operational tool such as illustrated by FIGS. 1 to 3, the side walls and the upper wall are folded back on themselves along a hinge zone, generally designated by 34. It will be understood that this hinge zone 34 should not not necessarily be of the type of an effective hinge since, as soon as the various constituent elements forming the rotary knife 10 have been separated from 3Ö the single molded part illustrated by FIG. 7 and assembled to create the operational tool, it is not it is generally no longer necessary to have to repeatedly pivot the side walls and the top wall 12, 14 and 16 around the longitudinal zone forming a hinge 34.

Considering FIG. 7, it can be seen that the axis 18 and its associated cutting disc 22 will be broken or otherwise separated from the side wall 14 at a point generally designated by 38 consisting normally of a casting connection of a relatively small diameter existing between one end of the axis 18 and the side wall 14. Similarly, the axis 20 and its associated cutting discs 24 and 26 are separated at the location of a casting connection existing between one end of the axis 20 and the side wall 12, and this as indicated in 40.

As can also be seen in Figure 7, the internal surfaces 13 and 15 of the various walls 12, 15 14 and 16 have tabs formed integrally with them for their interlocking. According to the illustrated embodiment, a central tab 42 provided on the internal surface of the wall 12 cooperates with two spaced apart tabs 44 and 46 provided on the internal surface of the pa-king 14, the tab 42 having a complementary curved surface 48 of the curved internal surface 15 of the associated upper wall 16, so that, in the assembled position, the upper part of the rotary knife 10 is held so that the side walls 12 and 14 are generally parallel and that , as will appear more clearly from the following description, the aforementioned legs, and in particular the leg 42, prevent flattening of the upper region of the rotary knife 10. The legs 44 and 46 preferably cooperate with the leg 42 so * to limit, together with the mounting areas of the shafts which will be described later, any movement of the side walls 12 and 14 relative to their parallelism. It will be understood that it is not necessary for the tabs 42, 44 and 46 to be of type 7 pressure mounting, and this will appear more clearly later.

In FIG. 7, it can be seen that the lower parts of the side walls 12 and 14 have a zone comprising means for the rotational mounting of the axes 18 and 20 in their operating position illustrated by * Figures 1, 2 and 3.

“In this respect, and as will be better understood by comparing Figures 4 and 7, the means for the rotational mounting of the axes 18 and 20, according to the preferred embodiment, consist of slots 50 in the form of holes of lock, the position and dimensions of which are such that they can receive in rotation the reduced diameter axis portions 52 of the axes 15 18 and 20, these thus being arranged in a common general plane apart of each other.

According to the preferred embodiment illustrated, the cutting discs 22, 24 and 26 are formed in one piece with their corresponding axes 18 and 20 and are thus thus fixed relative to these. The axis 18 includes lateral spacers consisting of axis ends 54 extending laterally, being normally equal, on each side of the cutting disc 22, the combined length of the axis portions 54 and the cutting disc 22 25 being such that, when the reduced diameter parts 52 of the axis 18 are press-fitted into two opposite slots 50 in the form of keyholes, the side walls 12 and 14 will be installed in their generally parallel position and the outer portions of * 30 hub 56 of the axes 18 and 20 will act to maintain these side walls 12 and 14 in the closed position illustrated in Figures 1, 2 and 3.

It will also be understood, considering the fi. -Gue 7 and also thanks to the other figures which will be. 8 described below, that the spacing axis portions 54 need not necessarily be provided on the two axes 18 and 20 and, in fact, they will not normally exist on the axis 20.

5 In this last report and considering more particularly Figures 5 and 6, it will be seen that as regards the axis 20, the spacing of the cutting discs 24 and 26 formed in one piece, on their corresponding axis 20 is such that the surfaces oriented towards the outside of the cutting discs 24 and 26 keep the side walls 12 and 14 in parallel position and that the hub portions 56 of this axis 20, as in the case of the hub portions 56 of the axis 18, help maintain the side walls 12 and 14 in the closed position.

As can be seen more particularly in FIGS. 5 and 6, the cutting disc 22 is preferably spaced equidistant from the internal surfaces of the side walls 12 and 14 and from the cutting discs 24 and 26, each of those -d. 20 being arranged laterally with respect to this cutting disc 22, so as to thus obtain the operating positions illustrated in FIGS. 1 to 3.

Referring again to Figure 6, the cooperating tabs 42, 44 and 46 may, if desired, be press-fit type to assist in holding the elements of the rotary knife 10 in their assembled position.

It will be understood that, although the preferred construction material for the '30 rotary pastry knife is a high density polymeric material, such as polyethylene, other synthetic polymers can also be used with as much efficiency. In addition, although only one particular embodiment has been envisaged for the purposes of illustration, it will be understood that modifications and variants remaining within the scope of the invention may be envisaged by specialists in this field. field. In this connection, it will be understood that the cutting discs can be dedi-5 different meters and can be rotatably mounted on their respective axes if a construction of this kind is appropriate. In addition, the discs can be of a slightly more planar appearance than that illustrated, provided that ib ended in a peripheral edge 10 sufficiently sharp and are rigid enough to "cut a" plastic "material, that is to say ie flexible, for which the device according to the invention is envisaged.

Finally, it will be noted that another advantage of the rotary knife 10 according to the invention lies in the fact that the spacing in the longitudinal direction of the axes 18 and 20 in the same common plane, together with the use of cutting discs of diameters generally equal and offset from each other, and the linear degree of contact of the cutting discs with the plastic material to be cut, such as pastry dough, allow the user, for example in the case of use of the knife according to Figure 1, to cut strips or narrow strips of dough which can be of curved appearance.

% "

Claims (10)

10 1. Rotary knife, characterized in that it comprises a body comprising means for rotationally mounting at least three cutting discs so as to pou-5 see selectively putting one or more discs in contact with a sheet of material to be cut, these knives being rotatably mounted in planes perpendicular to at least two parallel axes, spaced apart in longitudinal direction, one of these discs being rotatably mounted 10 in a plane perpendicular to an axis, while the v two others among the minimum number of three discs known to be mounted for rotation in planes perpendicular to a second axis, each of these two other discs being arranged laterally and away from either side of the plane of rotation of the first disc, the selective contact of the discs with the material to be cut making it possible to slice the material, or to cut it into strips or relatively large strips® or into strips or relatively narrow strips. 2. Rotary knife according to claim 1, characterized in that it comprises a body comprising means for the rotational mounting of at least three cutting discs, at least one of these three discs being rotatably mounted around a first axis of rotation in a plane perpendicular thereto, at least two other discs being mounted for rotation about a second axis of symmetry which is parallel to the first axis of symmetry and spaced from the latter in the longitudinal direction, these two other discs being offset laterally on either side of the plane of rotation of the first disc. 3. Rotary pastry knife, characterized in that it compctr a body provided with means for the rotational mounting of at least two axes, two of these axes being arranged in parallel and apart from one of the other • 11 in the longitudinal direction, these two axes carrying a series of cutting disks which can come into contact with a common surface for cutting thereof, one of these axes comprising a first disk which is perpendicular to it and is fixed in a predetermined position on this axis, another of these axes comprising a second and a third cutting disc, these discs being perpendicular to this other axis and arranged in a spaced manner thereon, the positions of this second and of this third rotary knife being provided laterally v on either side of the first mentioned rotary knife. 4. Rotary pastry knife according to claim 3, characterized in that the body consists of a downward opening element constituted by two opposite and spaced apart side walls, connected to each other by an upper wall. 5. Rotary pastry knife according to either of claims 3 and 4, characterized in that the cutting discs are fixed relative to their respective axes. 6. Rotary pastry knife according to any one of claims 3 to 5, characterized in that the means for rotationally mounting the axes comprise means making it possible to receive these axes for rotation relative to the side walls. 7. Rotary pastry knife according to any one of claims 3 to 6, characterized in that the elements constituting this knife are produced in the form of a single molded piece, the various elements of which are then separated and assembled to form the rotary knife. 8. Rotary pastry knife according to any one of claims 3 to 7, characterized in that the two aforementioned axes lie in a general plane 12 "common, which is horizontal with respect to a support surface for the material to be cut . 9. Rotary pastry knife according to any one of claims 3 to 8, characterized in that the body of this knife comprises means for holding the side walls in a spaced position. 10. Rotary pastry knife according to claim 9, characterized in that the means provided for holding the side walls in the spaced position consist of spacer elements forming legs, provided internally to the body of the knife, and * means formed in one piece with the axes thereof. 1 day »