EP0845062B1 - Concrete finishing apparatus - Google Patents

Concrete finishing apparatus Download PDF

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Publication number
EP0845062B1
EP0845062B1 EP96927793A EP96927793A EP0845062B1 EP 0845062 B1 EP0845062 B1 EP 0845062B1 EP 96927793 A EP96927793 A EP 96927793A EP 96927793 A EP96927793 A EP 96927793A EP 0845062 B1 EP0845062 B1 EP 0845062B1
Authority
EP
European Patent Office
Prior art keywords
roller
concrete
finishing apparatus
parts
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96927793A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0845062A1 (en
Inventor
John Williamson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Errut Products Ltd
Original Assignee
Errut Products Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from GBGB9516799.5A external-priority patent/GB9516799D0/en
Priority claimed from GBGB9601092.1A external-priority patent/GB9601092D0/en
Application filed by Errut Products Ltd filed Critical Errut Products Ltd
Publication of EP0845062A1 publication Critical patent/EP0845062A1/en
Application granted granted Critical
Publication of EP0845062B1 publication Critical patent/EP0845062B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
    • E01C—CONSTRUCTION OF, OR SURFACES FOR, ROADS, SPORTS GROUNDS, OR THE LIKE; MACHINES OR AUXILIARY TOOLS FOR CONSTRUCTION OR REPAIR
    • E01C19/00—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving
    • E01C19/22—Machines, tools or auxiliary devices for preparing or distributing paving materials, for working the placed materials, or for forming, consolidating, or finishing the paving for consolidating or finishing laid-down unset materials
    • E01C19/23—Rollers therefor; Such rollers usable also for compacting soil
    • E01C19/29—Rolling apparatus adapted to apply a rolling pressure less than its weight, e.g. roller finishers travelling on formrail combined with spread-out, strike-off or smoothing means; Rolling elements with controlled penetration or a controlled path of movement in a vertical plane, e.g. controlled by the formrails, by guides ensuring a desired configuration of the rolled surface
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
    • E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
    • E04G21/10—Devices for levelling, e.g. templates or boards

Definitions

  • This invention relates to a concrete-finishing apparatus, that is, apparatus comprising a relatively quickly rotating roller adapted to be moved relatively slowly across a bed, slab or layer or newly-laid concrete, while the latter is still fluid, in order to produce a smoothed surface thereon.
  • a rotary roll tube that is, a tubular roller, powered (i.e. rotated) by an air motor, hydraulic motor, electric motor or internal combustion engine, for the quick striking-off (i.e. surface-finishing) of newly laid, still fluid, or still unset, concrete.
  • the ends of the roller overhang, and rest upon, the form work so that the roller is maintained at the required level for the surface of the concrete.
  • Whichever implement is used, that is, a beam or roller, it has to traverse the full width of the concrete, and overhang the formwork, but should not overhang the formwork excessively. That is to say, the length of the beam or roller has to be matched to the width of the concrete. Hence it has been necessary to stock a large range of lengths of beams and rollers.
  • United States Patent Specification No. US-A-1,533,085 discloses a concrete finishing apparatus, comprising a rotatable powered roller adapted to be moved over a surface of newly laid concrete.
  • US-A-4 142 815 MITCHELL
  • US-A-4 702 640 ALLEN
  • US-A-4 993 869 ULMER ET AL
  • US-A-4 142 815 discloses a concrete slab striker which employs a counter-rotating roller to grade, or strike off, the concrete of a freshly poured concrete slab while the concrete is still in the plastic state.
  • the roller is formed from steel tubing, which may be filled with concrete for additional weight.
  • US-A-4 702 640 discloses a concrete finisher controlled and driven by an end handle assembly including an internal combustion engine for rotating a tubular roller.
  • US-A-4 993 869 discloses a concrete finishing machine with vibrating finishing rollers.
  • a fluid finishing apparatus such as a concrete finishing apparatus or the like, comprising a rotatable, powered roller adapted to be moved over a surface of newly laid fluid which is adapted to set, cure or otherwise solidify, with the roller surface in slipping contact with the fluid surface and with opposite ends of the roller maintained at the required level of the fluid surface, in order to produce a smooth finish to the surface of the fluid, said roller comprising means to maintain the roller at the required level of the concrete surface along the entire length thereof, characterised in that said means comprise internal stressing means for applying longitudinal compression to the roller, between the ends of the roller, thereby to reduce the tendency of the roller to sag or become permanently bowed.
  • the concrete-finishing apparatus comprises a relatively quickly rotating, powered roller adapted to be moved relatively slowly across a bed, slab or layer or newly-laid concrete, while the latter is still fluid, with the opposite ends of the roller maintained at the required level of the concrete surface, in order to produce a smoothed finish to the surface of the concrete, said roller being adapted to be removed from the remainder of the apparatus and dismantled, when not in use, into constituent, smaller, parts.
  • a relatively quickly rotating, powered roller adapted to be moved relatively slowly across a bed, slab or layer or newly-laid concrete, while the latter is still fluid, with the opposite ends of the roller maintained at the required level of the concrete surface, in order to produce a smoothed finish to the surface of the concrete, said roller being adapted to be removed from the remainder of the apparatus and dismantled, when not in use, into constituent, smaller, parts.
  • Said constituent smaller parts may or may not remain loosely inter-connected after the dismantling.
  • the apparatus of the invention may serve as a fluid-finishing apparatus for any material which when newly laid is fluid and thereafter sets, cures or solidifies to form a desired product, in particular materials for construction of buildings, roads, foundations or like structures in particular concrete, but also cement, tars or bitumens and the like.
  • the roller of a concrete-finishing apparatus in accordance with the invention is preferably adapted to be driven, that is, rotated, by an engine or motor, either directly or through a gearbox, at between 50 and 500, preferably between 100 and 300, revolutions per minute ("rpm") and the apparatus is preferably adapted to be drawn over the concrete by means of two handles at opposite ends of the roller, and/or by means of a winch, or possibly two winches, positioned at one end of the concrete.
  • Reference herein to "relatively quickly rotating powered roller adapted to be moved relatively slowly” is to the respective speeds of rotation, whereby the roller is caused to move and also causes the concrete surface to be displaced, i.e. a shear force is applied to the surface.
  • the apparatus may be operated optionally or alternatively in other manner with respect to the relative speed of rotation and movement of the roller or the like in order to achieve a desired surface finishing.
  • the apparatus is preferably drawn across the concrete in the opposite direction to that in which the rotation of the roller is tending to move the apparatus, i.e. such that the coincident surfaces of the roller and concrete serve to displace excess concrete towards that part of the concrete surface which has not yet been smoothed.
  • this provides a superior finish.
  • the powered roller is relatively quickly rotating in use, and is moved relatively slowly across the surface of the concrete.
  • a process for fluid surface finishing comprising drawing the apparatus of the invention across the fluid in the opposite direction to that in which the rotation of the roller is tending to move the apparatus.
  • the roller is supported at its ends and the central deflection is measured, enabling deflection to be reduced to an acceptable level by adjustment of said internal stressing means.
  • the internal stressing means preferably comprises one or more longitudinal tensioning members (preferably more than one) extending between and interconnecting two end-plates, one at either end of the roller.
  • the or each tensioning member may comprise a cable, or a rigid rod, or a combination thereof.
  • the rod may be wholly or partly screw-threaded for tightening the tensioning member so as to prestress the roller.
  • a preferred form of tensioning member comprises a cable joined securely at opposite ends respectively to two screw-threaded rods, each said rod being connected to a respective one of the two end-plates.
  • a single such tensioning member is provided within the roller, extending axially therein.
  • a plurality, for example three or four of such tensioning members are provided within the roller, equi-distantly from each other and equidistantly from the axis of the roller.
  • the cable may be joined to each rod by a sleeve which is swaged onto the cable and is screwed onto the rod.
  • the longitudinal tensioning member may be removed from the roller and dismantled into constituent smaller lengths, and may be reassembled with use of only some of its constituent lengths, or with use of all of said lengths together with additional lengths, whereby the length of the member may be adapted in convenient manner.
  • the tensioning member comprises one or more rod sections at one or both ends and a single cable section therebetween or comprises a single rod or cable section, each rod or cable section preferably constituting a constituent length.
  • the roller In the case where the roller can be removed from the remainder of the apparatus and dismantled, when not in use, into constituent, smaller parts, the roller may be dismantled for the purpose of reassembling with use of only some of its constituent parts, or with use of all of said parts together with additional parts, whereby the length of the roller may be adapted in convenient manner.
  • the aforesaid smaller parts may comprise rigid cylindrical roller sections, with the axial ends of their cylindrical surfaces tightly held together in axial end-to-end abutment. Additionally one or more of the aforesaid smaller parts may comprise dedicated end plates and/or dedicated coupling members, i.e. providing essentially end and/or coupling portions, and substantially no roller surface portion.
  • the aforesaid member smaller parts may be of any number and individual length as required to enable the construction of a roller of desired length, and to maintain the integrity thereof, preferably are of 2 or more in number, for example 2 to 15, more preferably 2 to 10.
  • the smaller parts are suitably of length enabling convenient transport and assembly acceptable lengthwise rigidity (i.e. so as not to sag or become permanently bowed), preferably are of length of 1 to 5 multiples of 0.3 to 1.8m, more preferably 1 to 5 multiples of 0.5 to 1.5m for example 1 to 5 multiples of the order of 1.0m.
  • roller sections comprise an integral or removable coupling portion at each end thereof, thereby enabling the coupling of roller sections end-to-end.
  • Such coupling portions may be like and adapted to couple with a dedicated coupling member, or may be effectively male and female respectively and adapted to couple directly with one coupling portion of another roller section.
  • one coupling portion of each roller section provides also an integral or removable end plate, for example the male coupling portion provides an end handle, and an attachment means for the tensioning member, and a dedicated end plate provides also a male coupling portion thereby enabling the assembly of a complete roller with use of any one or more roller sections and a single dedicated end plate.
  • integral coupling portions/end plates comprise one or more apertures therein to receive the tensioning member(s) along the length of the roller.
  • a single tensioning member passes through an aperture in the recess or projection of each female or male coupling portion.
  • Either the surfaces themselves of the roller sections may form the surface of the roller, or one or more sleeves may be fitted over the roller sections.
  • a single sleeve may be fitted over all the roller sections.
  • a plurality of, i.e. several, sleeves may be fitted over the roller sections.
  • Sleeve ends may coincide with roller section ends or, preferably, sleeve ends may be staggered axially in relation to the roller ends, so that the sleeve ends are out of registry with the roller section ends.
  • Such sleeves may be formed from sheets, curved into cylindrical forms, the ends of the sheets being tucked into surface slots, parallel to the roller axis, in the roller sections.
  • Such sleeves may be sacrificial, that is, designed to wear away in use and to be replaceable.
  • the invention relates to an apparatus for use in striking-off or finishing newly laid, still fluid, concrete on site; said apparatus comprising a roller having a cylindrical or nearly cylindrical outer surface which extends the whole length, or substantially the whole length, of the roller, for striking-off concrete; said apparatus being a powered striker roller; each end of the roller being rotatably connected to a respective guidably moveable support of said powered striker roller; one or both end(s) of the roller being formed as, or provided with, a (respective) shaft drivably coupling the roller to a motor or engine of said powered striker roller, for rotating the roller in use at a speed in the range of 50 revolutions per minute ("rpm") to 500 rpm; each end of the roller being directly or indirectly connected to a handle or the like, and/or to a winch or the like, for moving the roller over the concrete with the cylindrical or nearly cylindrical outer surface of the roller in slipping contact with the surface of the concrete; the roller being an assembly of constituent parts, at least some
  • the rigid constituent parts of the apparatus may comprise a plurality of cylindrical or nearly cylindrical roller sections axially abutted together to form or define the cylindrical or nearly cylindrical outer surface of the roller.
  • Each roller section is preferably tubular.
  • tensioning means extends throughout the interior of the roller from one end to the other end of the roller, for applying tension between the ends of the roller and thereby reducing a tendency of the roller otherwise to sag, the tensioning means being adapted so that the tension can be completely removed before or after use for the roller sections to be disconnected from each other.
  • the roller sections may be two or three or more in number, being formed by two end sections or by two end sections and one or more intermediate sections of the roller, each said ends section being formed with, or provided with, respective bearings, comprising the two bearings whereby the roller is supported or is adapted to be supported rotatably by the machine.
  • roller sections may inter-engage via unthreaded co-axial taper portions, one male, one female, inter-engaging with each other.
  • One or more relatively thin cylindrical or nearly cylindrical sleeves may form said cylindrical or nearly cylindrical outer surface, and may be sacrificial and replaceable.
  • the constituent parts, or some of them, may be still loosely joined together or may be completely separated from each other after the dissembly of the roller.
  • the apparatus 10 of Fig. 1 is adapted to be drawn across a bed of still fluid concrete 11 by means of two handles 12, 13 with the roller ends 14, 15 resting upon formwork 16, 17 which the ends overhang.
  • the roller 18 is powered by means of a mains-powered electric motor 19.
  • the apparatus 20 of Fig. 2 is similar except for two winches 21, 22 for drawing the apparatus over the concrete.
  • Fig. 3 illustrates a more robust apparatus 30 wherein the roller 31 is rotatably mounted to two carriages 32, 33, one having a roller-powering motor 34.
  • the form work comprises two U-section beams 35, 36 on their sides. The roller ends rest upon the tops of the beams 35, 36 whilst the carriages 32, 33 have relatively small guide-rollers 37, 38 which engage undersides or two top flanges of the beams 35, 36, so as to hold the roller 31 positively down, in contact with the formwork beams 35, 36, this does away with the need for handles.
  • the apparatus 30 is drawn over the concrete by two winches 39, 40.
  • the strike-off roller or roll tube 41 illustrated in Figure 1 is, for example, 4 to 5 m long and 120 mm in diameter. It is in the form of an elongate hollow cylindrical body and consists of two identical end sections 42, 42 and a middle section 43 (which can be replaced by a shorter or longer middle section, not shown). The sections 42, 43, 42 are separably connected end-to-end as shown.
  • the roller 41 comprises stressing means 44 comprising four tensioning members 45, only one of which is shown, extending between two end plates 46, 46.
  • the tensioning members 45 are equally spaced from one another around the axis of the roller and are equally spaced from the axis.
  • the number of longitudinal tensioning members may be selected depending on the size of the roller. It is possible to use a single longitudinal tensioning member. However, there are preferably at least three.
  • Each tensioning member 45 has two eiid nuts 47 engaging the end plates 46, 46 and tightened so as to put the tensioning member 45 in tension, whereby the roller 41 is put under end-to-end compression and thereby resists sagging and/or becoming bowed.
  • Each member 45 comprises two rods 48, 48 connected by a cable 49 whose length is selected depending on the length of the middle section 43; the cable 49 may be replaced by a chain, rope, strand or wire, for example.
  • Each end of the cable 49 is releasably connected to the associated rod 48 by a coupling 50, which may comprise a sleeve swaged on the cable and screwed onto the rod.
  • the free end of each rod 48 has a screwthread engaged with nut 47 which bears against the end plate 46 via an optional washer.
  • the central deflection as measured by rolling the roller with its ends resting on parallel screed boards may be improved from 30 mm using a conventional roll tube to a range round the circumference of 0 to 3 mm using a roller as described above.
  • a roller of a desired length may be made up from a kit of parts including end sections 42 and middle sections 43 of various lengths, from which the sections to be joined end-to-end are selected. Rods 48 and cables 49 of suitable length are then selected accordingly, and the roll tube as shown in Figure 4 is assembled. The roller is then supported at its ends, and the central deflection (sagging) is measured. In order to reduce this deflection to an acceptable level, the nuts 47 are tightened, preferably using a torque wrench to ensure that the tension in the members 45 is approximately equal.
  • the roller 41 may have a diameter which decreases slightly and gradually from the end regions toward a central region, to provide a negative camber. This is useful, for example, if a surface which rises towards the middle of the floor is to be formed when the roller is rolled over the concrete.
  • the strike-off roller may be driven in rotation by drive means (including a motor) at one end of the roller, or at each end of the roller if the span is particularly large.
  • the sections of the roller 41 may be made of metal (e.g. steel or aluminium), plastics material, or even wood, for example. Materials of low density and high stiffness are preferred.
  • the elongate body may have, over at least the major part of its length, a circumferential wearing surface which is replaceable.
  • the wearing surface may be constituted by a sleeve, which may be sectional and/or flexible.
  • a flexible sleeve e.g. of plastics sheet or textile fabric, may be fitted on site, may be rolled up for easy transportation, and may extend over the full length of the roller.
  • FIGS. 9 - 11 illustrate such a sleeve 51 on roller sections 52, 52.
  • Figs. 12 - 14 show an embodiment in which the abutment surface 53a, 53b on each section of the roller is a planar surface oblique to the axis of the roller, e.g. at an angle of 30 to 60°, preferably 45°.
  • the abutment surface again deviates from a plane normal to the axis of the roller and constituted by castellations 54a, 54b on the ends of the sections of the body. Both of these embodiments provide a staggered joint which avoids forming a noticeable line on the surface of the concrete.
  • the embodiment shown in Figures 18 - 22 has tapered male and female end portions 55a, 55b provided on the respective roller sections.
  • a relatively thin external tubular bridging member 59 fits within reduced diameter end sections 60, 61.
  • Figures 29 - 34 show a roller 62 covered by a removable sleeve 63 serving as the wearing surface mentioned above and extending along the whole length of the body.
  • the ends 63a, 63b of sleeve 63 are fitted into an undercut slot 64 in roller 62, parallel to the roller axis.
  • Two rods 65a, 65b may be coupled end-to-end by the coupling 66 shown in Figures 35 - 37.
  • Each rod 65a, 65b is cut away over more than half its cross-section at the end and a transverse plate 67a, 67b is welded to it.
  • Each plate 67 is provided with a pair of holes 68a, 68b offset from the rod.
  • the plates 67 are connected together by bolts 69 passed through the holes 68, with the interposition of a washer, and retained by a nut 70.
  • Figures 38 - 40 show part of a solid roller body 71 whose sections 72, 73 are joined by a threaded stub 74 on one section screwed into a threaded socket 75 in the other section.
  • An optional removable sleeve 76 is also shown.
  • Figures 41 - 45 show male and female end-plates 77, 78 with mating conical locating formations 79, 80.
  • Figures 46 - 48 show a variation on this.
  • Figures 49 - 54 show another variation, in which a double male conical fitting 91 engages two female conical end-plates 92, 92 fitted respectively to two roller sections.
  • Figures 55 - 56 show a one-piece stressed roller 93, containing stressing means as described and illustrated above.
  • Figure 57 shows a coupling 94, the construction of which is clear from the drawing.
  • Figures 58 and 59 show two forms of multi-section rollers 95, 96.
  • the roller sections in Fig. 58 have flat ends, whilst the roller sections in Fig. 59 have mating, non-flat ends.
  • Figure 60 shows another form of tensioning member 97, the construction of which is as shown.
  • Figure 61 shows an unstressed, four-section, roller 98, the sections 98a-98d being coupled together by male and female coupling members 99, 100.
  • Figure 62 shows a roller section (101) having integral end plate (102) comprising an open ended cylindrical end handle (103) and a tensioning member mounting (104), and having coupling portion (105) comprising an opening (106) adapted to receive a similar cylindrical handle (103) of another roller section (101).
  • the opening (106) and handle (103) may be engaged by means of mating studs and apertures in the respective supporting faces (102, 105) about opening (106) and handle (103), and secured by means of the tensioning to be applied, or may be engaged and secured by means of suitable threading on opening (106) and handle (103) or the supporting faces (102, 105).
  • a dedicated end portion is shown (107) having two end plates (103), one of which may associate with the coupling portion (106), thereby providing a complete roller.
  • a tensioning member (108) is provided along the axial length of the roller, via the open axis (109) thereof, suitably secured in place by means of tensioning plates (110) and thereafter tensioned, or about the axial length, via apertures (111) in similar manner.
  • Figure 63 shows a kit of parts, comprising roller sections (112) of different lengths, suitably 2x, 3x and 4x unit lengths, where the unit length is dependent on the intended nature of the surface to be finished, suitably for concrete finishing, the unit length is 0.5-1.5 m, preferably 1m or thereabouts.
  • the sections (112) are shown each with an end plate (113) and a coupling member (114) (detail not shown).
  • the kit also includes a dedicated end portion (115), and optional dedicated coupling members (116).
  • a tensioning member (117) is shown in its component parts, comprising cable (118) of 2x unit length and pairs of rods (119) each of 0.5x, 1x, 1,5x, 2x, 2.5x and 3.5x unit length, or 14 rods (120) each of 0.5x unit length, or 7 rods (120) each of 1x unit length.
  • kit may comprise any component part as hereinbefore defined with respect to the description and figures, or combination thereof.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Mechanical Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Road Paving Machines (AREA)
  • Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
  • Moulds, Cores, Or Mandrels (AREA)
  • Soil Working Implements (AREA)
  • Devices For Post-Treatments, Processing, Supply, Discharge, And Other Processes (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP96927793A 1995-08-16 1996-08-15 Concrete finishing apparatus Expired - Lifetime EP0845062B1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
GBGB9516799.5A GB9516799D0 (en) 1995-08-16 1995-08-16 Strike-off roller for finishing a concrete surface
GB9516799 1995-08-16
GBGB9601092.1A GB9601092D0 (en) 1995-08-16 1996-01-19 Concrete-finishing apparatus
GB9601092 1996-01-19
GB9601238 1996-01-22
GBGB9601238.0A GB9601238D0 (en) 1995-08-16 1996-01-22 Concrete-finishing apparatus
PCT/GB1996/001997 WO1997007286A1 (en) 1995-08-16 1996-08-15 Concrete-finishing apparatus

Publications (2)

Publication Number Publication Date
EP0845062A1 EP0845062A1 (en) 1998-06-03
EP0845062B1 true EP0845062B1 (en) 1999-06-16

Family

ID=27267861

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96927793A Expired - Lifetime EP0845062B1 (en) 1995-08-16 1996-08-15 Concrete finishing apparatus

Country Status (10)

Country Link
US (1) US20020025224A1 (da)
EP (1) EP0845062B1 (da)
AT (1) ATE181383T1 (da)
AU (1) AU6749596A (da)
CA (1) CA2229475A1 (da)
DE (1) DE69602953T2 (da)
DK (1) DK0845062T3 (da)
ES (1) ES2135913T3 (da)
GB (1) GB9601238D0 (da)
WO (1) WO1997007286A1 (da)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9703948D0 (en) 1997-02-26 1997-04-16 Errut Prod Ltd Fluid surface texturing device
GB2340866A (en) * 1998-08-26 2000-03-01 Errut Prod Ltd Contoured roller for concrete finishing apparatus
US7144194B2 (en) 2004-04-22 2006-12-05 Kipp Jr John H Surface finisher
US7104725B1 (en) 2004-04-22 2006-09-12 Kelly Kipp Concrete finishing attachment
US20070134064A1 (en) * 2005-12-09 2007-06-14 Dennis Lura Articulating reversible power screed with a varying length roller
EP2081425B1 (en) * 2006-11-01 2018-08-15 Tru-Turf Pty Ltd Roller assembly
US8137026B2 (en) * 2009-01-20 2012-03-20 Lura Enterprises, Inc. Powered roller screed with riser wheel
US20110188930A1 (en) * 2010-01-29 2011-08-04 Lura Dennis K Powered roller screed with curb attachment
WO2012024815A1 (en) * 2010-08-24 2012-03-01 Empire Technology Development Llc Wall racks, tracks, and roller for making prefabricated wall panels
WO2012024814A1 (en) 2010-08-24 2012-03-01 Empire Technology Development Llc Reinforced concrete dense column structure systems
CN102959162B (zh) 2010-08-24 2015-03-18 英派尔科技开发有限公司 预制墙板

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1533085A (en) * 1923-03-23 1925-04-14 James L Arnett Adjustable plastic-tamping machine
US4142815A (en) * 1977-11-28 1979-03-06 Mitchell David C Concrete slab striker
US4349295A (en) * 1980-03-21 1982-09-14 Morrison Donald R Structural ridge member for vibrating concrete screeds
US4702640A (en) * 1986-07-23 1987-10-27 Allen Engineering Corporation Rotating tube concrete finisher
US5456549A (en) * 1994-06-20 1995-10-10 Paladeni; Tod Powered rotary screed

Also Published As

Publication number Publication date
ES2135913T3 (es) 1999-11-01
EP0845062A1 (en) 1998-06-03
US20020025224A1 (en) 2002-02-28
ATE181383T1 (de) 1999-07-15
DE69602953T2 (de) 2000-03-16
WO1997007286A1 (en) 1997-02-27
GB9601238D0 (en) 1996-03-20
AU6749596A (en) 1997-03-12
CA2229475A1 (en) 1997-02-27
DE69602953D1 (de) 1999-07-22
DK0845062T3 (da) 2000-01-17

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