CA2347720A1 - Molded block - Google Patents

Abstract

A shaped pavestone, especially a concrete pavestone, used for paving purposes and comprising lateral surfaces with roundings in the form of a clothoid. The inventive pavestone is embodied as a cube or multiple thereof so that it can be laid in a versatile manner.

Description

"Molded Block"
The invention relates to a molded block according to the preamble of Claim 1.
Prior art:
US Patent No. 4,792,257 has disclosed a set of paving stones which comprises a paving stone which is square in plan view and whose lateral, planar faces have rounded portions running toward the vertical side edges which, in plan view, are designed as a curve with radii of curvature decreasing constantly toward the vertical side edges. Rounded portions of this type are referred to as "clothoids".
Such a "standard block" with a square base in plan view is supplemented in this prior art by a "1/2 block" with half the base and a "1 1/2 block" with 1.5 times the base. Both supplementary blocks again have, in their corner regions, clothoidal rounded portions in plan view. Such clothoids may be present on one or more side faces.
The side faces and the upper and lower faces are otherwise formed as planar faces. The circumferential edge regions can in this case be designed to be irregularly broken. In this known set of blocks, the height of the paving stones is always considerably lower than the edge length of the upper, square face of the standard block. This ratio is about 2.5.

DE 33 25 752 has disclosed a concrete paving stone which has approximately the geometric shape of the 1 1/2 block of US
Patent 4,792,257, that is to say it is an elongate parallelepiped. In this case, however, the longer side edge in the paving stone according to DE 33 25 752 is about three times as long as the shorter side face. The height of this paving stone includes a further dimension which is lower than the width of the shorter side face. The special feature in this prior art resides in the fact that the block form can be laid differently. In this case, because of the different dimensions between block height and block width, mixed laying is not possible, since a paving stone rotated through 90°
about the longitudinal axis forms a higher laying height because of its width. Such a paving stone rotated through 90°
gives a non-planar surface structure in its laying pattern, because of the clothoid being laid at the top, since the clothoid shape comes to lie in the upper face. As can be seen from the figures of DE 33 25 752, different surface structures can therefore be laid with a molded block. However, mixed laying is not possible.
EP 0 768 427 A1 has disclosed a paving stone in the form of a cube whose shape is produced by breaking open a larger parallelepiped. In this case, the broken edges are to be used as characteristic upper faces to produce a rustic impression.
In a paving stone of this type, smooth or broken upper surfaces can be laid due to the cube shape.

- 2a -Object and advantages of the invention:
The invention is based on the object of proposing a molded block which, on account of its shape, provides the possibility of flexible laying. At the same time, both planar and non-planar faces are to be produced, which can also be configured in mixed form.
This object is achieved by a molded block according to Claim 1.

02/04 '01 MO 15:54 FAX +49 751 31533 EISELE - OTTEN t~037 in a~udes a furth~T d~,-~----~1~---i~_tha~ '~
width of the shorter side face . The special fee~ture in this prior art resides in the fact that the blv form can be 7.aid differently. In this case, beca a of the different diznensioris between block heigh~,.t' and block widL~., mixed laying is not possible, ince a paving stone rotated through 90° about the ongitudinal axis forms a higher laying height becau of its width. Such a paving stone rotated through 0° gives a non-planar surface structure in its layin~ pattern, because of the clothoid being laid at t ~ top, sinct» the elothoid shape comes to lie in t upper face. As can be seen from the figures of n 33 25 752, different surface structures can there ore be laid with a molded block.
However, mixed lay~ig is not possible.
Obj ect and advy~ntages of the invention:
The inven on is based on the object of proposing a molded b ock which, on account of its shape, provides the po sibility of flexible l.aying_ At the same time, both planar and non-planar faces are to be produced, whi~h can also be configured in m~,xed form.
his object is achieved by a molded block according to ,~,dvantag~ous and expedient developments of the molded block spQCified in the main claim are prPSented ~,z~ the subclaims.
The invention i3 based on the finding that a p3,anar or a profiled surface structure of a paving-stone covering can be implemented with, fox example, only one molded block if the molded block has different geometric structures on izs outer faces, which can be used as desired in order to configure the pavix~g-atone surface.
If, in particular, the paving ston~ is used in the form of a cube, that is to say with side edges of actual Raoaivad Apr-02-01 09:45am From-+49 751 31533 To-S8B/FiCo, Pale 37 ~.~.......-....."..-".,.- ..,..-""~~..",. ..... , .

02/04 'O1 MO 15:u4 FAX +48 i51 ~15a3 EISELE - 01TEN I~I0~8 length, then different configuration of the sides of the cube can lead to the configuration of different surface structures. In this case, the present invention additionally makes use of the feature of the geometric modification of a cube face_ This is done in such a~ way that either a planar cube face is structured in its side contour, or th~nt a cube face intrinsically has a two-dimensional or three-dimensional shape. As a result of these measures, by rotating the cube about a horizontal or a vertical axis of rotation, in each case a different "cube surface" can be used as the upper surfsce to be walked ors, the respectively differezxt structures of these faces leading Lo a very different appearance of the paving-stone covering. zn particular, pZanax faces and curved faces can be selected as the upper face of a respective molded block, and can ire.
each case bye combined with one another.
In a development of this basic idea, a so-called "double cube" or "twofold cube" cars also be used. which corresponds to the dimensions of two basic elements laid beside each other. This twofold cube can also be laid differently by its being rvtaLed through 90°, for example, about its horiaoncal longitudinal axis_ For 2S thfs purpose, however, the blocl~ height and the shorter broad side of the b~.ock must agree in their length dimension, in order to be inserted inta the grid pa>riern w~.tk7~out azzy proj action, that is to say at the same laying height.
Also advantageous is the use of a fourfold cube, .that is to say the basic block is joined together four times about a vertical longitudinal axis, it being possible for such a block to be rotated only about iLS vertical mid-axis in the composite surface.
zn a particular refinement of the invention, the faces of such block shapes axe provided with a "clothoid", that is to say the intrinsically planar side ~ace has a Received Apr-02-O1 08:45am From-+49 751 81588 To-SiB/FSCo, Paae 88 02/04 'Ol MO 15:55 FAX +49 751 91593 EISELE - 01TEN C~ 039 rounded portion toward the edge region whose radius of curvature decreases constantly toward the side edge.
'these clothoids can be present sins~ly or in duplicate on each side face, the result being a very different laying pattern. If, according >:o the invention, wedge blocks are also added >ro such a building-set arrangement, the result is overall a paving-stone building set wh~.Ch permits flexible laying. In this Case, the laying can be designed to be straight or curv~xd, it braing possible, in the case of a curve, fvs the corners aligned toward the center of the curve to bra sharpened by one or two clothoids being arranged at such points.
Tf, in this connection, laying exaztrples are provided, then the result may be surfaces structured very differently in a straight or a curved shape, in particular with the cube structure.
Further details of the invention are illustrated in the drawings and will be explained in more detail using the following description.
In the drawings:

Fig. la shows a molded block as a "standard block" in cube form with a planar upper face, Fig. lb shows >:he block form of Fig. la rotated Lhrough 90° with an uneven upper face, Fig- lc shows a plan view or a side view of the block form of Figs. 1a, 1b, Fig. 2a shows a "twofold blvck~ with a planar upper face, Racelved Apr-02-01 OB:dSam From-td9 T51 31533 To-SZB/FiCo, Page 39 ~.~-..-,"~."~." ~,~w ., ...... W , . ..~ .. .. . _.

02/04 '01 MO la:5a FAX t48 ia1 ~1G~~ EISELE - OTTEN l~ 040 Fig, Zb shows the b7,ock form of Fig. 2a rotated through 90° about its longitudinal axis, with a structured upper face, Fig. 2c shows a plan view or a side view of the block form of Figs 2a, 2b, Fig ~ 3 shows a plan view of a ° fourfold, block' , Fig. 4 shows a laying example of the block forms of P'is~s 1a, lb, Fig. 5 st'zows a laying example of the block forms of Fig. 1 to 3, Figs 6a to 5e show vax'iants of the block forztt of Figures 1 and 2, gig. 6j snows a variant of the block form of Figs 1. 2 with reduced dizoensions, Figs 6h, 6i show a block variant with a wedge form, and Fig. 7 shows a laying example with the block forms of Fig. 6.
Descriptio~z of the e::emplary embodiments Fig. 1 shows the standsrd block, as it is kzxoarn, or basic block l, which has the basic structure of a cube with the respective equal edge ~.ezigch L _ The cube has an upper planar horizontal face 2, a lower planar and horizontal supporting face 3 and four vertical side faces 4 to 7. Tx?,e upper corner points of the cube are designated by reference symbols 8 to 11, the lower corner points of Lhe cube are designated by reference symbols 12 iro 15. Similarly, the vertical connecting Receiv~d Apr-02-Oi 08:45em From-+48 T51 31533 To-SB~B/Fe~Co, Pese 40 02/04 'O1 MO 15:5'3 FAX +48 i01 31x33 EISELE - OTTEN 1TJ041 lines .through the corner points $ to 15 are designated bY the reference syrnbvls 16 Lo 19_ The plan view of the cube-shaped block form o~ Fig_ la is illustrated in F~,g. 1c.
~ig_ 1a and Fig, lc reveal a first rounded portion 20 of ths~ side face 5, that is to say the side face 5 has a rounded portion 20 r"rhich is directed toward the vertical connecting line 16 and whose radius of curvature R changes coritinuously toward the corner region. Such a rounded portion is d~asignated a clothvid, which in the further text is designated by the general reference symbol K. The shape of such a clothoid i.s described most extensively in terms of its extent and dimensions and its arrangement in the earlier US Fatont No. 4, 792. 257 _ Refer~r~.ce is het.eby expressly made to this document. In this regard. this document is incorporated in the ,present application. zn particular, the clothoids may have different dimensions, that is to say the begiz7~txiz~.g of the elothoid can extend over different length sections on the side wall.
1~'igures 1a, 1c further xeveal that they side face 7 opposite the side face 5 has two rounded portions 21, 22, which are likewise formed as clothoids K. In this case, the clothoid 21 extends from the planar side face 7 in the dirQCtion of the corner paint 11 and vertical Side edge 19 and, as it increasingly approaches this side edge, has a radius of curvature R which becomes smaller and smaller. The same applies, in mizror-image fashion in relation to the vertical mid-g7lane 23, with regard to the rounded portion or clothoid 22_ The clothoid 22 can also extend on the side face 6 toward the corner poznt 10_ This is shown dashed by 22'. Sri the regioro of the vertical connecting line 17 Received Apr-02-01 08:45am From-+49 751 81588 To-S&B/FiCo, Paae 41 OE/04 ' 01 hi0 la: u5 FAX t49 i u1 31u33 EISELE - OTTEN I~04E
there. is no rounded portion, so that this connecting line 17 simultaneously forms the block side edge 17.
Similarly, there could be a clvthvid vn the side face ~d as well, the rounded portion extending either toward the corner point 8 or toward the corner point 11_ As a result of the clothoids 20 to 22, the cube form of the basic block 1 is therefore somewhat .modified in terms of its structure, that is to say corner regions are cut oft over a large ax'ea by the rounded portion.
The cube structure of the paving stone of Fig. la has vertical planes of symmetry 23, 24. Fig. 1a reveals horizontal axes of rotation 25, 26 and a vertical axis of rotation 27 through >rhe center of s~netry 28.
The cube-shaped blocx. form of Fig. la makes it possible to rotate this bloc7c in all dir~rctions about the ar_es of rotation a5, 26, 27, in each ca~a through 90° Or 180°.
If, for e:cample, the block of Fig. 1a is rotated in the clockwise direction about the horizontal axis of rotation 25 (arrow 29), there the result is the block form of Fig. lb. The rear'side face 7 becomes the upper face 7', the upper face 2 becomes the side face 2' and the front side face 3 becomes the lowex side face 3'_ If the pavin3 stone of Fi,g _ 1 has an upper planar face 2, then in the event of a rotation through 90° about the axis of rotation 25, this face becomes the upper face in relation to a pxofiled surface 7' having the two clothoids 21, 22. By this means, Lhe upper structure is bevel~d off in two directions bar the elothoids 21, 22 in the direction of the side edges.
This imparts a spatial two-dimensional structure tv the upper face 7'.
R~c~ived Apr-02-01 OB:L5am From-+dA 751 31533 To-SiB/FiCo, Pale d2 02/04 'O1 MO 15:u6 FAX +48 iul ~1~3a EISELE - OTTEN f~J04~
_ g _ The exemplary embodiments 2a tv 2c deal with a twofold block or double block 30. If the block form of Fig_ la is doubled by the length 2L, then the result is the block fOx'm of Fzg. 2a with a longer side edge 2L, with a shorter side edge L and a height L. Th~r paving stone of f'ig_ 2a has an upper planar face 31, a lower supporting face 32 snd vez-tical side faces 33 'CO 36.
The front face 34 again has a rounded portion 20 in the form of a elothoid K, the rear face 36 has two rounded portions 21, 22 in the form of a clothvid K. These clothoids correspond to the description of Figs la, le.
Accord3.ag to the exemplary illustration of Fi,g. 2c, the clothvids can also be located on the Side face 35 as clvthvids 22'.
Since the side faces 33, 35 substantially have a square cross section, the block form of Figr. 2a can be rotated about a horizontal longitudinal mid-axis 25' (arrow 29). As a result, the rear side 36 comes into the uppex' position according LO P'ig. 2b, so that the rounded portions 21, 22 formed as clothoids again appear ns the upper face according to the illustration in Fig. 2b. If an equally high surface of the blocks is desired in spite of the rotation of such blocks, the twofold block of rig. 2a can merely be rotated in 90° steps about the horizontal axis of rotation 25w Fis~. 2b shows, in a form offset to the right, the variant havizx~ a clothoid zz~ on the side face 35.
If the block form of Fig. 2 comprises two cube structures according to Fig. 1 located beside each other, then ~.n the exemplary embodiment of Fig. 3, the effect is of four basic stones laid beside one another in their Cube form. This fourfold block 37 aCCOrdingly has, in its squaxe plan view of FiQ. 3, an edge lex7i.gth of 2L in each case. The upper planar face is designates by 38, a lower, invisible su~pportirig face is designated by reference symbol 39. ~'he vertical side Faces are Received Apr-02-O1 08:45am From-+49 751 81528 To-SiB/FSCo, P~ae 48 OE/04 '01 MO 1u:66 FAX t48 iu1 ~1a~3 EISELE - OTTEN I~ 044 - g designated by 40 to 43. As already described in Figures 1 and z, the front lateral face 41 has m lateral clothoidal rounded Dortion 20. Similarly, the opposite vertical side face 43 has rouzlded poxt~.ons 21, 22 which poW ~,t >rourard both corner regions and axe likewise of clothoidal design, Likewise, as illustrated by way of example, the side face 42 can alterz~atively have a clothoid 22'. The height of the fourfold block 37 illustrated in plan view is again the basic dimension L.
zn order to form an equal height layer of a laid surface, the fourfold block of gig. 3 can be rotated through 90° or 180° only about the vertical axis of rotation 27. Of couxse. ~.t is also possible for the twofold block 30 to carry out this rotational movement.
ThQ implementation of the clothoid form 20 to 22 can be 2p carried out vn any desired side face or surface. A
modified rounded portion or bevel is also conceivable.
The block forma of Figs 2 and 3 can also be placed on edge to form an edge stone, so that these project above the remaining paving-stoxie covering by a ler~gtts L. This makes a simple edge border possible with the same block form. Here, too, the block forms can be rotated in such a way that Lhe uggex face is designed to be more rounded or more flat.
'fhe illustration of Fig_ 4 shows a first laying example of the block forms of Fig. 1a and Fig. 1b.
If the standard block 1 in an arrangement according to Fig. 1a is laid With a planar upper face 2, then this is illustrated in the top row 44 of Fig. 4. Each normal block 1 within the row 44 can still be rotated in the clockwise direction or the counterclockwise direction about its vertical axis of rotation 27, corresponding Received Apr-Ot-01 08:45am From-+49 T51 81558 To-SSB/FiCo, Pane a4 OE/04 'O1 MO lu:d6 FAX +48 Ta1 alG~~ EISELE - OTTEN C~ 045 to the arrow representation 45. Hy this means, the arrangement of the clothvids 20 to 22 can be shifted into each corner region _ Txze arrangement of the clvthvids 20 >ro 22 or else other clothoids oan be varied ix~ terms of their position on the basis of such rotational movements.
zn the next row 46, the block form 1' correspvrtding to the illustration of Fig. lb is shown. In this case, the upper faoe 7' is visible, so their the rounded portions or clothoids 21, 22 form a rounded upper face.
Accordingl~r, a structured throe-d~.zrtensional upper face 7' is arranged in row 46, beside the planar surface in row 44.
The next row a7 can again be formed like the row 44, The lowest row 48 shows a ratatiot'~ of the standard blocks 1' in row 45 about a vertical axis of rotation a7'.
zo Of course, the standard blocks 1, 1' with a planar surface or rounded surface 7' can also be varied ag desired within a row.
In the axa=,ciple~ry ~rok,odiment of .I*ig. 5, the block forms of Figs 1 to 3 are combined_ The upper row 49 shows the twofold block 30 of Fig. 2a, the row 50 lying alongside shows the b~.ock form 30' of Fig. 2b, that is to say a block form of row 49 rotated thxough 90° about the horizontal longitudinal aria.
Row 51 shows the block form analogous to the row 44 in Fig. 4r row 52 shows an arrangement analogous to the row 48 in Fig. 4, but with two basic blocks 1' located beside each other in each case.
Finally, the lower row 53 illustrated in Fig. 5 shows the block form 37 of Fig. 3.
Raceivod Apr-02-O1 06:45em From-+48 t51 31533 To-S~B/FiCo, Pale 45 OZ/04 '01 MO iG:Si FAX t48 iai ~153a EISELE - OTTEN f~ 046 It goes without saying that lrx7.e block forms corresponding to the illuszrazioz7. of Fig_ a can be varied as desired. =n this Case, both a running unit v~rith offset joints and a crossing unit with mutually crossing joints can be established. Tn addition, the twofold blocks 30 and the fourfold blocks 37 can also be placed on edge is erder to form edge boundaries.
Variants of the standard block 1, 1' of the Figures 1a to 1c are illustrated in Figures 6a to 6e with Lhe capital letters A to E. In this case, these may be a plaza view of a corxespondfag cube-shaped st.azzdard block 1 s~rhose clothoids A are arranged on different side faces. If the upper face is again designated by 2, the vertical s~,de faces by reference symbols ~4 to 7, the xesult is Lhe variations illustrated. In Fig. 6a, the side faces 4. 6, 7 have a clothoid K xunxxing around in the clockwise direction in each case in the corner regions.
A xight angle of a corner xegion without a clvthoid is marked appropriately. Fig. 6b shows a clvthoid x on the side faces 4, 5 and 6, which are arranged to run in opposite directions on the side faces 5 axld 6, that is to scar in the courttercloc3cwise dzx~eccion, ~d in the clockwise direction on the side face d_ The exemplary embodiment of Fish. 6c Shows a clothoid K in the region of the side face 5 with. otherwise three rectangular corner xegions ~ Fig _ sd shows a clothoid K on the side face 5 and on the side face 7, arranged so as to run in the counterclovkwise direction. Finally, Fig. 6e shows a clothoid K on the side face 4 and on the side face 6.
runx~,ing in the clockwise direction.
The edge length L of the cube 1 can, fox example, have a dimension of 9.5 x 9.5 x 9.5 Cm. Iz~. order, in particular, to lay areas ixJ~ accordance with the illustration of Fish. ~, additional block forms according tv Figs 6j to 6i are provided, and arc Received Apr-02-01 OA:45~m From-+49 751 81588 To-SiB/FSCo, Paa~ 46 OE/04 '01 MO 1'3:5i FAX t48 iu1 31x33 EISELE - OTTEN , ~104i designated by the letters J, H an,d I. The block form of Fig. 6j can have any outline structure of the block forms of Pigs 6a to 6e. =n Fig_ 6j, it is illustrated in a similar way Lo Fig_ 6c, with a clothoid K o~. the side face 5.
If the side edge L is for example L -~ 95 mm in the block forms previously specified, then the block form of Fig. 6j can have an edge length of the cube of L' ~ 80 mm. This special block form of Fig_ 6j is designated a "small block" 54. The block form of Fig.
6h, again r~elate~ to a special block as a, first wedge block 55, which has an excess length L1 .: 100 mm and a shortened width La = 75 znm, with a height L defined for 7.5 all the blocks in the building set. The plan view of F'ig _ 6h accordingly shows a block 55 which is slightly rectangular in outline.
If, in Fig. 6h, the ver~.ic~zl side edges are as7ain designate4 by Lr~e reference symbols g to 7, then the two side faces 4 end 6 are designed to be wedge-shaged and, nevertheless, have clothoidal rounded portions zc running in the clockwise direction in their corner regions. The planar side face ~ forms a first wedge angle a1 ~ 2.5°, Lhe planar side face 6 forms e~ second wedge anS~le a2 - 3_0°_ The opening of the wedge angle is oriented in the same direction, that is to $ay downwaxd in Fig_ 6h_ The upper side face 7 also has a elothoid K ruruziag in the clockwise dz~'ection.
the second wedge block 56 is a further supplementary block with the same special length L~ as the wedge block of Fig. 6h, it being possible for L1 to be approximately equal to 100 ~11~m- The further special length L3 is desi~7x~.ed, fo,r example, at 87 mm in the system. here, too, the S~.de faces 4 and 6 have a first wedge angle S1 - 1.5° and a second wedge angle ~2 Received Apr-02-O1 06:45~m From-+49 151 81688 To-SiB/FiCo, P~ae 4T

OE/04 '01 MO l5:ui FAX t48 i61 ~1a5~ EISELE - OTTEN 1.X048 1.5°.. The clothoids K running in tl~e clockwise direction are again arranged in the Coxner region of the side faces 4, 6, the clothoid on the side face .4 being arranged opposite the wedge angle ~1.
The block forms illustrated in plan view in F~.gures 6a zo 6i sre reproduced ire a laying example according to Fig. 7 in a curved laying pattern. In this case, all the block forms are designated by the corresponding capital letters. zt can be seen from this that Lhe block forms can be rotated in a [lacuna] in each case about a vertical mid-axis of rocati~on, in order to comp into an appropriately desixed position. This des~.red position can result from the fact that the corner regions adjoinix~g one another on thQ inside of a curve adjoin ora.e another rather without a clothoid than with a. Corresponding clothoid. The blocks carp tk~erefore be rotated appropriately about their vertical axis of xotation in order to come into a desired position. For 2o example, two to >;hree clothoids are laid together at the lower butt point, in order to form a curved laying pattern. In this case, the longer wedge blocks ~ and I
can be laid both toward the center of Lhe circle and in the transverse direction with respect Zo this. By this means, using cube-shaped and sligb,tly rectangular and wedge-shaped blocks, a particularly well-structured curve shape can be laid. If the curved pattern illustrated in JE!ig. ~ is desired, it is possible, for example, ~or a template, for example of degradabJ.e filCer paper, to be laid underneatk~" on which the blocks are laid in the form illustrated. Of course, the individual blocks must be marked appropriately in some dorm.
illustrated in the lower resTion of Fig. 7 axe two curved rows, with appropriate di,xriensioning specified by way of example.
Received Apr-OZ-O1 08:d5am From-;Ed~ 751 31533 To-Si6/FiCo, Paee dA

OZ/04 'O1 MO 13:u8 FAX +48 Tu1 31533 EISELE - OTTEN f~1048 The invention is not restricted to the exemplary embodiments illustrated ar~td described_ Instead, it also comprises all developments by those skilled in the art within the Context of the protective claim~_ =n particular, the clothoids can also have a modified sk~ape, clothoids being quite particularly outstanding in terms of their configuration.
In addition, the block forms illustsated in. Fig. ~ can be configured to be planar. in accordance with the plan view of Figures 6a to 6i. By means of appropriate xotation of the blocks about a hor~,aontal axis of rotation, a phxsically rounded surface with clothoids vn the upper side can also be produced. This provides an, appearance with a planar and structured upper face.
Furthex'zmore, all the aircumferential block edges can be wholly or partly broken or rounded, in. a way similar for example to the illustration in Figs lb to 3b of US
Patent a7,92,257.
Received Apr-02-01 06:45~m From-+49 751 81528 To-SiB/FiCo, Pace 49 OZ/04 '01 MO 15:x8 FAX +48 i51 31533 EISELE - OTTEN ~ 0'30 List of reference symbols:
1. Hasic block 32. Lower supporting face 2. Upper face 33. Vertical side face 3. Lower face ~ 34. Vertical side face 4. Side face 35. Vertical side face 5. Side face 36. verz~,caJ. s~.de face 6_ Side face 37_ Fourfold block 7. Side face 38. Upper planar face 8. Upper corner point 39. Supporting face 9. Upper corner point 4p. Side face 10.Upper corner point ~41.Side face 11.Upper corner point 42. Side face 12.Lower corner point 43. Side face 13.Lower corner point 44. Upper row 14.Lower corner point 45. Arrow 15.Lower corner Doint 46. Row 16.Vertical connecting line 47_ stow 17.vertical conr~ecti.z~g 48. Itow liz~e 18 Vex't~.Ca1 connecLizxg 49 _ Row _ line 19.vertical connecting line 50. Row 20.Rounded portion 51. Row 21.Rounded portion 52. Row 22.Rounded portion 63. Row 23.Vertical mid-plane 54. Small block 2d.Vertical mid~plar~e 55. lst wedge block 25.Horizontal axis of rotata.or~ 56. 2nd wedge block 26.Horizontal axis of rotation 57. Curved row 27.Vert?csl axis of rotation 58. Curved row 28.Centex of symmetry 29.Arrow 30.Twofold block/double block 31_Upper face Roc~iv~d Apr-02-01 O9:l6am From-+49 751 31533 To-Si6/FiCo, Page 50

Claims (9)

Claims:

1. Molded block, in particular one made of concrete, for a paving-stone covering, having substantially planar faces, at least one face (2 - 7) or (31 - 36) having a rounded portion (20 - 22) over a large area running toward at least one side edge, characterized in that the molded block has the shape of a single cube (1) or a one-piece molded block (30) having the dimensions of two adjacent cubes (double stone), whereby the face (2 - 7) or (31 - 36) having a rounded portion (20 - 22) over a large area can be optionally placed in vertical or horizontal position.

2. Molded block according to Claim 1, characterized in that at least one of the cube faces has a rounded portion over a large area, whose radius of curvature preferably changes constantly toward the corner region.

3. Molded block according to one of the preceding claims, characterized in that the size of a twofold cube is provided, with a width and height of edge dimension L and a length of edge dimension 2L, provision being made to rotate the molded block through 90° and/or 180° about its horizontal longitudinal axis during laying, with a constant block height.

4. Molded block according to one of the preceding claims, characterized in that a one-piece supplementary block (37) having the dimensions of four adjacent cubes (fourfold cube) is provided, the rotation of which takes place about a vertical axis of rotation (27).

5. Molded block according to one of the preceding claims, characterized in that the radius of curvature of the rounded portions running toward the side edge is designed as a curve with, in plan view or side view, a radius of curvature which decreases constantly toward the corner regions (clothoid).

6. Molded block according to one of the preceding claims, characterized in that the face of the molded block is designed to form a clothoid toward a side edge over approx. 1/4 to 1/6 of the cube length L, the clothoidal curvature being variable with a radius of curvature tapering toward the corner region.

7. Molded block according to one of the preceding claims, characterized in that at least one side edge between two side faces or between side faces and upper/lower face is designed to be sharp-edged or irregularly broken or rounded.

8. Molded block according to one of the preceding claims, characterized in that the cube-shape basic block and/or the double-square block and/or the fourfold square block has/have clothoidal rounded portions on at least two opposing or on three side faces, said rounded portions being arranged in the clockwise direction or running in opposite direction or opposed in plan view of the molded block.

9. Molded block according to one of the preceding claims, characterized in that a small block with a reduced side edge and/or a wedge-shaped supplementary block are provided.