US3920369A - Machine for the production and cleaning of exposed aggregate slabs - Google Patents

Machine for the production and cleaning of exposed aggregate slabs Download PDF

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Publication number
US3920369A
US3920369A US315642A US31564272A US3920369A US 3920369 A US3920369 A US 3920369A US 315642 A US315642 A US 315642A US 31564272 A US31564272 A US 31564272A US 3920369 A US3920369 A US 3920369A
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Prior art keywords
combination
slab
base plates
slabs
aggregate
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US315642A
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English (en)
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Paul Boehringer
Erwin Heiligenmann
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Paul Boehringer and Co
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Paul Boehringer and Co
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28B11/00—Apparatus or processes for treating or working the shaped or preshaped articles
    • B28B11/002—Apparatus for washing concrete for decorative purposes or similar surface treatments for exposing the texture

Definitions

  • ABSTRACT Exposed aggregate slabs are produced in an automatic machine wherein two or more base plates, each having an elastic top portion, circulate along an endless path and are moved seriatim into register with a form which carries vibrators and is transported to and from a position of alignment with the ram of a vertical press.
  • the form receives a layer of aggregate and a charge of cementing agent whereby the layer of aggregate rests on the elastic portion of a base plate.
  • the freshly produced slab is removed from the form with the respective base plate and is transferred onto one of a series of pallets on a stepwise operated conveyor. Such transfer takes place simultaneously with tilting of the slab from a horizontal into a vertical plane and with separation from the base plate.
  • the front side of the slab is rinsed or cleaned while the slab rests on a pallet whereby the rinsing or cleaning action results in removal of traces of cementing agent from the outer side of the aggregate layer.
  • the slabs on a fully loaded pallet are then transferred to a final curing station.
  • V V I was fi l m-w S lllil w Q. mm mm mm c w w w mm .hm
  • the present invention relates to improvements in machines for the production of so-called exposed aggregate plates or slabs wherein one side of the product is formed by a layer or stratum of aggregate which has been exposed as a result of washing to remove a coating of partially cured concrete. More particularly, the invention relates to an automatic machine for the massproduction of exposed aggregate slabs havin'g front sides formed by layers of coarse and/or fine aggregate, such as particles of crushed granite, hard rock, marble and/or others.
  • Exposed aggregate slabs are normally produced by resorting to a form and a base plate onto which the aggregate is placed prior to introduction of concrete, mortar or other suitable cementing agent (hereinafter called cement) on top of the aggregate layer to fill the form and to provide a backing which is caused to harden and to thereby hold the particles of aggregate in position.
  • cement cementing agent
  • base plates are stored in a magazine and are removed therefrom one after the other to advance along a predetermined path extending through a production line where the base plates are separably assembled with a form which thereupon receives a layer of aggregate and a mass of cement to produce a green or uncured slab.
  • the base plate with the uncured slab thereon and with the form around theuncured slab is thereupon introduced into a ramming'or compacting unit where the contents of the form are condensed prior to transfer of the base plate, with the condensed slab thereon, into a curing station.
  • the withdrawal of base plates from the magazine and the transport of base plates with condensed slabs thereon is carried out by hand so that the procedure is slow and the output is very low. Also, the cost of such slabs is very high because each base plate and each slab must be handled by several workmen.
  • the transport to final curing station is preceded by transport to a preliminary curing station where the cement is allowed to harden to an extent which should suffice to permit safe handling during washing at a washing station.
  • the washing station is normally provided with means fordirecting against one side of a partially cured slab one or more jets of water to wash away 2 nary curing takes up much time so that the making of fresh slabs must be terminated well ahead of the end of a shift unless the workmen are allowed to work overtime with attendant increased expenditures for manhours.
  • An object of the invention is to provide an automatic machine for the mass-production of exposed aggregate slabs which can be controlled and attended to by a minimal number of workmen, whichcan turn out large gate.
  • the coating of cementat the front side i.e., at that side where the aggregate layer is to be exposed to impart to the slab its eye-pleasing appearance. It is customary to delay the curing-of the cost of cement at the frontside of a freshly produced slab so as to insure that the main portion of the slab (namely, the body of cement behind the aggregate layer) will harden sufficiently to allow for safe manipulation of slabs without cracking, breakage and/or chipping but that .the coating at the front side will remain soft enough so as to enable the water sprays to remove such coating within a relatively short period of time. It was found that, in spite of such precautionary measures, the slabs are likely to break, chip and/or crack so that manythereof must be discarded or re-v cuted in size.
  • Another object of the invention is to provide a machine wherein all operations, particularly those requiring the exertion of a substantial effort, are carried out automatically and in a predeterminedsequence so that the output of the machine greatly exceeds the output of presently known slab making machines.
  • a further object of the invention is to provide a machine wherein the coating of cement at the front side of a partially cured slab can be removed within a short interval of time and by one or more readily available instrumentalities including mechanical coat removers.
  • An additional object of the invention is to provide a machine which can produce slabs of any desiredsize and/or shape, which can produce relatively large slabs alternately with smaller slabs, and which can be rapidly converted for the manufacture of slabs having a desired finish at the front side and/or a desired size or shape.
  • Still another object of the invention is to provide a machine which is capable of mass-producing exposed aggregateslabsin such a way that the quantity'of cementing agent at the front side of the slab is reduced to a minimum so that the relatively small quantities of cement atthe front side can be removed in a time-saving operation and by exertion of forces which cannot dislodge or comminute the particles of the aggregate layer.
  • a further object of the invention is to provide the machine with novel and improved slab compacting or ramming means and with novel and improved means for transporting base plates and slabs past a plurality of slab forming and treating stations.
  • An additional object of the invention is to provide a machine which occupies a small amount of floor space and wherein a large number of finished but not completely cured slabs can be stored in a small area.
  • the invention is embodied in a machine for making exposed aggregate slabs of the type wherein at least the front side of the slab is formed by a layer of aggregate particles which are held together by a hardenable cementing agent.
  • the machine comprises at least one form for reception of charges including particles of aggregate and cementing agent, at least one base plate which is movable into register with and then constitutes the bottom wall of the form and which includes a top layer or portion consisting of elastomeric material, means for feeding charges of cementing agent into the form and aggregate particles onto the base plate so that the particles form a layer resting on the top portion of the base plate, compacting means including a press and agitating means and being actuatable to compact the charge in the form so that the charge is converted into a slab resting on the base plate, a supply of pallets, transfer means which is actuatable to transfer slabs from the base plate onto the pallets, and a cleaning unit (preferably a washing and/or rinsing unit) which is arranged to clean the front sides of successive
  • the machine preferably employs a series of base plates and a transporting device which can move the base plates along an endless path to place successive base plates into register with the form prior to introduction of cementing agent into the form.
  • the particles of aggregate may be fed onto the base plates prior or subsequent to movement of base plates into register with the form.
  • the pallets are preferably movable by a conveyor which can advance the pallets in stepwise fashion to provide room for successively produced slabs.
  • Each pallet may support one, two or more slabs and each slab is preferably tilted to move from a horizontal plane into a vertical plane during transfer from the slab forming station onto a pallet.
  • the cleaning unit is preferably mounted at a level above that pallet which is ready to receive a freshly produced slab, and the machine preferably further comprises an attaching device for suitable carriers or shoes which are applied to one edge face of each slab before the slab is placed onto a pallet so that the thus applied carrier rests on the pallet and supports the respective slab.
  • FIG. 1 is a schematic plan view of a slab making machine which embodies one form of the invention
  • FIG. 2 is a vertical sectional view as seen in the direction of arrows from the line IIII of FIG. 1;
  • FIG. 4 is a diagrammatic plan view ofa third machine which constitutes a modification of the machine shown in FIG. 3, with the parts located above the path for base plates omitted for the sake of clarity (see the line IV-IV of FIG. 5);
  • FIG. 5 is a side elevational view of a portion of the machine shown in FIG. 4;
  • FIG. 6 illustrates the structure of FIG. 5 but with the form in a different position
  • FIG. 7 is a transverse vertical sectional view as seen in the direction of arrows from the line VIIVII of FIG. 5;
  • FIG. 8 is a transverse vertical sectional view as seen in the direction of arrows from the line VIIIVIII of FIG. 5;
  • FIG. 9 is a sectional view similar to that of FIG. 8 but showing a portion of a modified machine
  • FIG. 10 is an enlarged elevational view as seen in the direction of arrow X shown in FIG. 4;
  • FIG. 11 shows the structure of FIG. 10 but with the parts of a carrier attaching unit in different positions;
  • FIG. 12 is an elevational view as seen in the direction of arrow XII shown in FIG. 4;
  • FIG. 13 illustrates a detail as seen in the direction of arrow XIII shown in FIG. 11;
  • FIG. 14 is an enlarged view of a detail as seen in the direction of arrow XIV shown in FIG. 3;
  • FIG. 15 is a plan view of the structure shown in FIG. 14;
  • FIG. 16 is a view as seen in the direction of arrow XVI shown in FIG. 14;
  • FIG. 17 is a plan view of a pallet
  • FIG. 18 is a side elevational view of the pallet as seen in the direction of arrow XVIII shown in FIG. I7;
  • FIG. 19 is an end elevational view of the pallet as seen in the direction of arrow XIX shown in FIG. 18.
  • FIGS. 1 and 2 there is shown a slab making machine which comprises a slab forming station 1 and utilizes a form or mold 4 which is movable in a horizontal plane between a first position 2 at the slab forming station 1 and a second position 3 at a ramming or compacting station.
  • the removal of freshly formed exposed aggregate slabs 19 takes place at the station 1.
  • the form 4 is of rectangular shape and has an open top defining a material-admitting opening 5 which can further receive successive base plates 6.
  • the base plates 6 are moved into register with and deposited in the form 4 at the station 1 by a transporting device 7.
  • Each base plate 6 comprises a bottom layer or portion 6a consisting of a hard metallic material (such as manganese steel) and a top layer or portion 8 consisting of rubber or an elastomeric synthetic plastic material.
  • the portion 8 can be glued or vulcanized to the bottom portion 6a.
  • the form 4 When the form 4 dwells in the position 2 at the slab forming station I, it receives a base plate 6 from the transporting device 7 in a first step. and thereupon receives a metered quantity of coarse and/or fin aggregate 11 which is to form a layer at the front side 44 of the finished slab 19.
  • the aggregate 11 is supplied by way of a shute 9 and an aggregate feeding device or feeder 10 so that the metered quantity of aggregate ll descends onto the elastic top portion 8 of the base plate 6 which registers withthe form 4 at the station I.
  • the form 4 is provided with vibrators or analogous agitating devices 12 which are actuated on admission of aggregate 11 so that the latter is distributed on the top portion 8 to form an even layer as shown in the right-hand portion of FIG. 2.
  • the machine further comprises a second feeding device or feeder 13 which delivers into the form 4 (in the position 2 at the station 1) a'metered quantity of cement 14 before the thus filled form 4 (with the base plate 6 in register therewith) is transferred to the compacting station (position 3) where its contents are compacted by a ramming unit 16 including a press and the aforementioned agitating devices or vibrators 12 on the form 4.
  • the press 15 comprises a vertically movable tamper or ram 17 which carries one, two or more additional agitating devices or vibrators 18.
  • the conversion of metered quantities of aggregate 11 and cement 14 into a slab 19 takes place in response to vibration and subsequent compression at an elevated pressure.
  • the form 4 is returned to the position 2 at the slab forming station 1 to be separated from the base plate 6 and from the freshly formed slab 19 thereon.
  • the station 1 is located at a level above an ejector 20 which comprises spaced-apart upwardly extending knockout elements or fingers 21.
  • the fingers 21 When the fingers 21 are caused to move upwardly, eg. by a hydraulic jack, they lift the base plate 6 and the slab 19 above and away from the form 4.
  • the base plate 6 (with the slab 19 thereon) is then accepted by a reciprocable portion of a transfer device 23 including a table 22 which can be pivoted or tilted through 90degrees.
  • the fingers 21 are retracted downwardly and away from the base plate 6 as soon as the latter is supported by the reciprocable portion of the tiltable table 22.
  • the table 22 is then moved in a direction to the left, as viewed in FIG. 2, so as to locate the base plate 6 and the slab 19 thereon above a conveyor 24 for pallets 43.
  • the evacuated form 4 at the station 1 is immediately assembled with a fresh base plate 6 which is lifted off the table 22 by a lifting mechanism 25 of the transporting device 7.
  • the transporting device 7 is movable along an overhead guide rail 27 which is located above the ejector 20 and transfer device 22.
  • the means for moving the device 7 along the guide rail 27 may comprise one or more driven endless chains, not shown.
  • the transporting device 7 inserts the base plate 6' from above so that the composite mold including the form 4 (with the agitating devices 12 thereon) and the base 6 is ready to receive a fresh charge of aggregate 11 and cement 14.
  • the mechanism 25 which lifts the base plate 6 off the table 22 of the transfer device 23 comprises grippers 28 which can engage the marginal portions of the base plate 6 and are pivotably mounted on a holder 29.
  • the grippers 28 form two rows spaced apart from each other by a distance which approximates the width of a base plate 6 or 6'.
  • the holder 29 is movable up and down by a suitable motor, e.g., a hydraulic or pneumatic cylinder and piston unit 30. It is to be noted that the base plate 6' was used for the making of the preceding slab 19 and that is was left on the table 22 upon detachment of the preceding slab l9 therefrom.
  • the transporting device 7 (with the base plate 6' held by the grippers 28) is moved above and into register with the form 4 at the station 1)
  • the cylinder 30 moves the holder 29 downwardly and the grippers 28 are disengaged from the base plate 6' by pivoting relative to the holder 29.
  • the means for thereupon depressing the thus released base plate 6 into the form 4 at the station 1 comprises an inserting device 32 having two hydraulic or pneumatic cylinders 31 which are mounted on the holder 29 and whose pis- 6 ton rods are movable downwardly as soon as the grippers 28 are disengaged from the base plate 6'.
  • the slab 19 which rests on the base plate 6 is thereupon attached to a strip-shaped shoe or carrier 83 (see FIG. 11) by means of an attaching unit 34.
  • the carrier 83 is placed adjacent to that (rear) side of the slab 19 which faces away from the base plate 6 and this carrier is secured to the slab 19 by a clamping device 35.
  • the attaching unit 34 comprises two levers 33.
  • the table 22 is pivotable or tiltable through degrees by a turning or pivoting device 36 which includes two gear segments 37 mating with pinions 38 secured to a shaft 39 of the table 22.
  • the latter is movable along a frame 40 in parallelism with the path of pallets 43 on and above the conveyor 24.
  • the shaft 39 of the table 22 is rotated by two or more rack and pinion drives 41, 42 whereby the gear segments 37 cause the table 22 to pivot with the slab 19 until the carrier 83 comes to rest on a pallet 43 which is being supported by the conveyor 24.
  • the front side 44 of the slab 19 on the respective pallet 43 is then located in a substantially vertical plane and faces the transfer device 23 including the table 22.
  • the washing or rinsing unit 46 for the front side 44 of the freshly produced slab 19 is connected with one lever 33 of the attaching unit 34 by a linkage 45 which can move the washing unit lengthwise of the conveyor 24.
  • the washing or rinsing unit 46 is preferably also movable up and down or sideways in parallelism with the adjacent slab 19.
  • the clamping device 35 is then disengaged from the slab 19 on the pallet 43.
  • the machine energizes several strong electromagnets 49 on the table 22 so that the electromagnets attract the base plate 6 and the latter is disengaged from the freshly produced slab 19 on the pallet 43 in response to renewed pivoting of the table 22 back to its original horizontal position.
  • the base plate 6 is thereupon accepted by the transporting device 7 in the aforedescribed manner, i.e., it is engaged by the grippers 28 on the holder 29 of the lifting mechanism 25 and is ready to be returned into the form 4 at the slab forming station 1.
  • the conveyor 24 advances thepallets 43 thereon by a step so as to provide room for a fresh slab 19 which is to be delivered with the base plate 6.
  • the conveyor 24 is a roller conveyor having two rows of rollers 50 in the form of pulleys driven by a pair of endless V-belts 51.
  • the means for intermittently driving the rollers 50 by way of the respective belts 51 is not shown in the drawing.
  • the undersides of the pallets 43 are provided with pairs of elongated legs 52 which rest on the upper stretches of the respective belts 51 to thus reduce the likelihood of shaking of slabs 19 during transport by the conveyor 24.
  • the pallets 43 are stored in a magazine 53 which has suitable feeding means (not shown) for supplying a succession of pallets onto the right-hand end portion of the conveyor 24, as viewed in FIG. 1.
  • the levers 33 of the attaching device 34 withdraw strip-shaped carriers 83 for the slabs 19 from a magazine 54 which is located at a level above the conveyor 24 adjacent to the washing or rinsing unit 46.
  • the details of the carriers 83 will be described with reference to FIGS. 10 and 11.
  • the washing or rinsing unit 46 comprises a horizontal tubular manifold 47 which supplies pressurized water or a mixture of water and air to a series of discrete

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  • Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
US315642A 1971-12-17 1972-12-15 Machine for the production and cleaning of exposed aggregate slabs Expired - Lifetime US3920369A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2162850A DE2162850C2 (de) 1971-12-17 1971-12-17 Vorrichtung zum Auswaschen von Feinanteilen aus der Sichtfläche von frisch gepreßten Betonplatten o.dgl.

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US (1) US3920369A (xx)
AT (1) AT323629B (xx)
CH (1) CH546135A (xx)
DE (1) DE2162850C2 (xx)
FR (1) FR2165567A5 (xx)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036574A (en) * 1974-12-02 1977-07-19 Klockner-Humboldt-Deutz Aktiengesellschaft Device for the production of carbon bodies
US4218206A (en) * 1978-10-02 1980-08-19 Mullins Wayne L Mold box apparatus
US4259050A (en) * 1977-06-06 1981-03-31 Mircea Borcoman Multi-purpose installation for the manufacture of small and medium products of reinforced and unreinforced concrete
US4406608A (en) * 1981-04-14 1983-09-27 Misawa Home Co., Ltd. Releasing apparatus
US4649006A (en) * 1983-03-03 1987-03-10 Anton Heggenstaller Process for compression molding of sections with a constant cross-section consisting of vegetable particles
US5397228A (en) * 1992-01-13 1995-03-14 Metten Produktions-Und Handels-Gmbh Method and device for the fabrication of perforated blocks
US5942181A (en) * 1996-02-01 1999-08-24 Besser Company Method for texturizing the face of concrete products
US6083334A (en) * 1995-02-09 2000-07-04 Ipa-Isorast International S.A. Process for the production of heat insulation panels for large panel construction
US20090315210A1 (en) * 2008-06-20 2009-12-24 Linares Miguel A Production assembly and process for mass manufacture of a thermoplastic pallet incorporating a stiffened insert
US20110014344A1 (en) * 2004-05-11 2011-01-20 Dirk Meskendahl Moulding
US8438981B2 (en) 2008-06-20 2013-05-14 Oria Collapsibles, Llc Pallet design with buoyant characteristics
US8522694B2 (en) 2008-06-20 2013-09-03 Oria Collapsibles, Llc Structural supporting pallet construction with improved perimeter impact absorbing capabilities
US8701569B2 (en) 2008-06-20 2014-04-22 Oria Collapsibles, Llc Pallet design with structural reinforcement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2302276C3 (de) * 1973-01-18 1975-09-04 Henke Maschinenfabrik Kg, 4951 Holtrup Maschine zum Auswaschen der Sichtoberfläche von frisch gepreßten Waschbetonplatten

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US315414A (en) * 1885-04-07 Anthony ittner
US1588841A (en) * 1925-09-05 1926-06-15 Ernest A Knapp Composition for concrete blocks and method of using the same
US1982730A (en) * 1932-04-27 1934-12-04 Erkman John Concrete block machine
US2682676A (en) * 1949-01-29 1954-07-06 Gene J Franchi Venetian blind cleaning device
US2834317A (en) * 1954-07-01 1958-05-13 Western Electric Co Wound capacitor racks
US2856668A (en) * 1952-04-22 1958-10-21 Dominaire Const Inc Concrete block molding machine
US2990069A (en) * 1956-10-30 1961-06-27 Greensburg Concrete Block Comp Pallet handling and conveying apparatus
US3002249A (en) * 1957-03-18 1961-10-03 Clarence W Jackson Machine for the manufacture of concrete building units
US3139663A (en) * 1961-09-29 1964-07-07 Joseph I Boswell Concrete casting machine
US3307518A (en) * 1964-06-15 1967-03-07 Robert A Norton Spray paint shield for a boat
US3426112A (en) * 1961-03-17 1969-02-04 Ernest J Taylor Smith Building unit casting and facing method and apparatus
US3425105A (en) * 1965-09-23 1969-02-04 Gulde Cement Co Apparatus for making concrete facing bricks with varied color and texture
US3566490A (en) * 1968-06-10 1971-03-02 Robert H Nagy Apparatus for laying concrete planks with exposed aggregate top and edge surfaces
US3662041A (en) * 1970-10-05 1972-05-09 Remington Arms Co Inc Process of producing optically projectable replicas of pressure coalescible film

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NL144859B (nl) * 1968-08-22 1975-02-17 Kalkman Nv Maschf Geb Werkwijze en inrichting voor het vervaardigen van betontegels, alsmede tegel vervaardigd volgens deze werkwijze.

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Publication number Priority date Publication date Assignee Title
US315414A (en) * 1885-04-07 Anthony ittner
US1588841A (en) * 1925-09-05 1926-06-15 Ernest A Knapp Composition for concrete blocks and method of using the same
US1982730A (en) * 1932-04-27 1934-12-04 Erkman John Concrete block machine
US2682676A (en) * 1949-01-29 1954-07-06 Gene J Franchi Venetian blind cleaning device
US2856668A (en) * 1952-04-22 1958-10-21 Dominaire Const Inc Concrete block molding machine
US2834317A (en) * 1954-07-01 1958-05-13 Western Electric Co Wound capacitor racks
US2990069A (en) * 1956-10-30 1961-06-27 Greensburg Concrete Block Comp Pallet handling and conveying apparatus
US3002249A (en) * 1957-03-18 1961-10-03 Clarence W Jackson Machine for the manufacture of concrete building units
US3426112A (en) * 1961-03-17 1969-02-04 Ernest J Taylor Smith Building unit casting and facing method and apparatus
US3139663A (en) * 1961-09-29 1964-07-07 Joseph I Boswell Concrete casting machine
US3307518A (en) * 1964-06-15 1967-03-07 Robert A Norton Spray paint shield for a boat
US3425105A (en) * 1965-09-23 1969-02-04 Gulde Cement Co Apparatus for making concrete facing bricks with varied color and texture
US3566490A (en) * 1968-06-10 1971-03-02 Robert H Nagy Apparatus for laying concrete planks with exposed aggregate top and edge surfaces
US3662041A (en) * 1970-10-05 1972-05-09 Remington Arms Co Inc Process of producing optically projectable replicas of pressure coalescible film

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4036574A (en) * 1974-12-02 1977-07-19 Klockner-Humboldt-Deutz Aktiengesellschaft Device for the production of carbon bodies
US4259050A (en) * 1977-06-06 1981-03-31 Mircea Borcoman Multi-purpose installation for the manufacture of small and medium products of reinforced and unreinforced concrete
US4218206A (en) * 1978-10-02 1980-08-19 Mullins Wayne L Mold box apparatus
US4406608A (en) * 1981-04-14 1983-09-27 Misawa Home Co., Ltd. Releasing apparatus
US4649006A (en) * 1983-03-03 1987-03-10 Anton Heggenstaller Process for compression molding of sections with a constant cross-section consisting of vegetable particles
US4705472A (en) * 1983-03-03 1987-11-10 Anton Heggenstaller Device for compression molding of sections with a constant cross-section consisting of vegetable particles
US5397228A (en) * 1992-01-13 1995-03-14 Metten Produktions-Und Handels-Gmbh Method and device for the fabrication of perforated blocks
US6083334A (en) * 1995-02-09 2000-07-04 Ipa-Isorast International S.A. Process for the production of heat insulation panels for large panel construction
US6257865B1 (en) 1996-02-01 2001-07-10 Besser Company Apparatus for texturizing the upper surfaces of concrete products
US5942181A (en) * 1996-02-01 1999-08-24 Besser Company Method for texturizing the face of concrete products
US8747934B2 (en) * 2004-05-11 2014-06-10 Stork Titan B.V. Moulding
US20110014344A1 (en) * 2004-05-11 2011-01-20 Dirk Meskendahl Moulding
US11793227B2 (en) 2004-05-11 2023-10-24 Stork Titan B.V. Moulding
US11013255B2 (en) 2004-05-11 2021-05-25 Stork Titan B.V. Moulding
US9986755B2 (en) 2004-05-11 2018-06-05 Stork Titan B.V. Moulding
US9060544B2 (en) 2004-05-11 2015-06-23 Stork Titan B.V. Moulding
US20090315210A1 (en) * 2008-06-20 2009-12-24 Linares Miguel A Production assembly and process for mass manufacture of a thermoplastic pallet incorporating a stiffened insert
US8701569B2 (en) 2008-06-20 2014-04-22 Oria Collapsibles, Llc Pallet design with structural reinforcement
US8522694B2 (en) 2008-06-20 2013-09-03 Oria Collapsibles, Llc Structural supporting pallet construction with improved perimeter impact absorbing capabilities
US8438981B2 (en) 2008-06-20 2013-05-14 Oria Collapsibles, Llc Pallet design with buoyant characteristics
US8420179B2 (en) 2008-06-20 2013-04-16 Orin Collapsibles, LLC Spray applicating process and production assembly for manufacturing a pallet
US8167605B2 (en) * 2008-06-20 2012-05-01 Oria Collapsibles, Llc Production assembly and process for mass manufacture of a thermoplastic pallet incorporating a stiffened insert

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Publication number Publication date
FR2165567A5 (xx) 1973-08-03
CH546135A (de) 1974-02-28
DE2162850C2 (de) 1982-09-16
DE2162850A1 (de) 1973-06-20
AT323629B (de) 1975-07-25

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