EP2880648A1 - Verbesserungen an taktilen bodenflächenindikatoren - Google Patents
Verbesserungen an taktilen bodenflächenindikatorenInfo
- Publication number
- EP2880648A1 EP2880648A1 EP13824890.1A EP13824890A EP2880648A1 EP 2880648 A1 EP2880648 A1 EP 2880648A1 EP 13824890 A EP13824890 A EP 13824890A EP 2880648 A1 EP2880648 A1 EP 2880648A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- head
- piece
- ground surface
- indicator
- downwardly projecting
- 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.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
- G09F19/228—Ground signs, i.e. display signs fixed on the ground
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H3/00—Appliances for aiding patients or disabled persons to walk about
- A61H3/06—Walking aids for blind persons
- A61H3/066—Installations on the floor, e.g. special surfaces, to guide blind persons
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F11/00—Road engineering aspects of Embedding pads or other sensitive devices in paving or other road surfaces, e.g. traffic detectors, vehicle-operated pressure-sensitive actuators, devices for monitoring atmospheric or road conditions
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F19/00—Advertising or display means not otherwise provided for
- G09F19/22—Advertising or display means on roads, walls or similar surfaces, e.g. illuminated
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61H—PHYSICAL THERAPY APPARATUS, e.g. DEVICES FOR LOCATING OR STIMULATING REFLEX POINTS IN THE BODY; ARTIFICIAL RESPIRATION; MASSAGE; BATHING DEVICES FOR SPECIAL THERAPEUTIC OR HYGIENIC PURPOSES OR SPECIFIC PARTS OF THE BODY
- A61H2201/00—Characteristics of apparatus not provided for in the preceding codes
- A61H2201/16—Physical interface with patient
- A61H2201/1683—Surface of interface
- A61H2201/169—Physical characteristics of the surface, e.g. material, relief, texture or indicia
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D31/00—Other methods for working sheet metal, metal tubes, metal profiles
- B21D31/04—Expanding other than provided for in groups B21D1/00 - B21D28/00, e.g. for making expanded metal
- B21D31/043—Making use of slitting discs or punch cutters
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J1/00—Preparing metal stock or similar ancillary operations prior, during or post forging, e.g. heating or cooling
- B21J1/04—Shaping in the rough solely by forging or pressing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
- F04C2270/00—Control; Monitoring or safety arrangements
- F04C2270/04—Force
- F04C2270/042—Force radial
- F04C2270/0421—Controlled or regulated
Definitions
- the present invention provides improvements in relation to tactile ground surface indicators. More particularly, the invention provides improved methods of manufacturing a tactile ground surface indicator, and indicators formed by such methods.
- Tactile ground surface indicators comprise protuberances which are fixed over walking surfaces, including in particular footpaths, stairs and platforms, principall to warn blind and vision-impaired pedestrians of a hazard ahead and/or to provide them with directional orientation information.
- the present invention provides improvements relating to tactile ground surface indicators, particularly the manufacture thereof. Summary of the Invention
- a method of manufacturing a tactile ground surface indicator which comprises a head configured to lie fixed over a ground surface, the method comprising plastically deforming a section of metal plate to form a dish-shaped piece and machining an exterior of the dish-shaped piece whereby an external profile of said head is formed.
- the section of metal plate is substantially simultaneously cut - preferably punched - from flat metal plate and plastically deformed to form said piece.
- the section of metal plate is cut - preferably punched - from the flat metal plate to form a blank and the blank is thereafter plastically deformed to form said piece.
- said section is coined to form the dish-shaped piece.
- said section may be forged to form the dish-shaped piece.
- said dish-shaped piece is formed so as to have a substantially flat central portion and a sloped peripheral portion extending radially outwardly from the central portion.
- the section is substantially circular, whereby the dish-shaped piece is generally frustoconical and the head is generally button-shaped.
- the head is formed such that a lower end of a peripheral side wall thereof has an outer diameter of about 35mm and an upper end of the peripheral side wall has an outer diameter of about 25mm.
- the head is formed such that it has a height in the range of about 4mm to about 5mm.
- said head is configured with a grip
- said machining comprises machining the central portion to form the grip.
- the grip comprises concentric upwardly projecting ribs.
- the dish-shaped piece is the generally frustoconical one, whereby the ribs comprise rings.
- the machining is effected such that the grip includes or is defined by an upwardly projecting lip which is coincident with or closely adjacent to an upper end of an inclined peripheral side face of the head.
- the dish-shaped piece is the generally frustoconical one, such that the lip is a ring.
- said head is to have a smooth inclined peripheral side face and said machining comprises machining the peripheral portion to define said side face.
- said head is to have a peripheral side wall having an inclined, stepped exterior, and said machining comprises machining the peripheral portion to define that exterior.
- the indicator is manufactured so as to include a downwardly projecting stem connected to the head to be fixedly receivable by a cavity formed through the ground surface for anchoring the indicator head over the ground surface.
- the method includes connecting an element defining the stem or from which the stem is derived to the head or a piece from which the head is derived to effect the interconnection between the head and the stem.
- the element is positioned such that an end portion thereof extends through a hole formed through the head/piece and plastic deformation of the end and/or head/piece is effected to create an interlock between the head/piece and stem/element.
- the element is connected to the head/piece before the machining.
- the dish-shaped piece can then be mounted to an apparatus, preferably a lathe, used to effect the machinining, via the element.
- a tactile ground surface indicator having a head and a downwardly projecting member connected to the head to be fixedly receivable by a cavity formed through the ground surface for anchoring the head over a ground surface
- an element defining the downwardly projecting member or from which that member is derived is positioned such that an end portion thereof extends through an opening formed through either the head or a piece from which is derived an exterior portion of the head arranged to be visibly exposed when the head is anchored, and plastic deformation of the end portion and/or piece is effected to create an interlock between the piece and element.
- the plastic deformation is effected by swaging.
- the downwardly projecting member comprises a stem.
- the head may be generally button-shaped or configured in the form of a truncated cone.
- the opening is defined by a hole.
- substantially the entirety of the head is derived from said piece.
- a method of manufacturing a tactile ground surface indicator having a head and a downwardly projecting stem connected to the head to be fixedly receivable by a cavity formed through the ground surface for anchoring the indicator head over a ground surface, in which method an element defining the stem or from which the stem is derived is positioned such that an end portion thereof extends through a hole formed through either the head or a piece from which the head is derived and plastic deformation of the end portion and/or head/piece is effected to create an interlock between the head/piece and stem/element.
- the method according to the second or third aspect of the invention accords with the first aspect of the invention, formation of the head comprising deformation of said section of metal plate.
- the head comprises a substantially flat base occupying substantially the entirety of a footprint of the head to be receivable against the ground surface.
- the head is a substantially solid piece of metal.
- said element is configured with a plug portion which is sized so as to be incapable of passing through said opening or hole such that withdrawal of the downwardly projecting member or stem from the head in an axial direction from the plug portion to the opening or hole is precluded.
- the element is further configured with a void and the head/piece is plastically deformed such that material of which the head/piece is comprised flows into said void to occupy it, thereby precluding withdrawal of the downwardly projecting member or stem from the head in an axial direction from the opening or hole to the plug portion.
- said material flows to occupy substantially the entirety of said void.
- the plug portion is formed at an upper end of said end portion and said void is formed below that upper end.
- the void is bounded at an upper end thereof by a lower end of said plug portion.
- the void extends circumferential ly.
- the element is configured with a radially inward or transverse taper defining said void.
- the plastic deformation of the head/piece is effected by applying pressure through the plug portion.
- the application of said pressure through the plug portion effects countersinking of part of the plug portion in the head/piece.
- the plug portion can thus thereafter be machined such that what remains thereof is flush with an upwardly facing surface of the indicator head.
- the downwardly projecting member or stem is metal.
- the metal is steel.
- the steel is stainless steel.
- the indicator is one in which the downwardly projecting member or stem is fully exposed.
- the downwardly projecting member or stem may then be received directly into cement or adhesive in the cavity to be secured thereby when the cement or adhesive sets, such that anchorage of the head over the ground surface is effected.
- the downwardly projecting member or stem is shaped to form an interlock with the cement or adhesive when set; to this end, the downwardly projecting member or stem may be configured with a circumferentially extending notch or channel into which adhesive/cement in the channel can flow before it sets.
- the indicator is to include a casing over said downwardly projecting member or stem, which casing is configured to deform against a side wall of the cavity when forced into the cavity, thereby effecting anchorage of the head over the ground surface.
- the downwardly projecting member or stem is shaped to form an interlock with the casing; to this end, the downwardly projecting member or stem may be configured with a peripherally or circumferentially or peripherally extending notch or channel which receives a complementarily formed, transversely or radially inwardly projecting portion of said casing.
- the casing is plastic.
- the casing is moulded to the downwardly projecting member or stem.
- the casing is formed by injection moulding.
- the injection moulding is effected to form, in addition to said casing, an infill which occupies a downwardly opening recess defined within the head and created by the plastic deformation of the section of metal plate.
- Figure 1 is a perspective view of a blank for forming a head of a tactile ground surface indicator in accordance with a first preferred embodiment of the invention
- Figure 2 is a schematic view showing preliminary fitting of an elongate metal element to the blank for the purposes of forming a metal stem of the indicator;
- Figures 3A to 3C schematically depict subjection of a preassembly, comprising the blank and elongate element, to a stamping and pressing process to effect coining of the blank, thereby forming a dish-shaped piece therefrom, and plastic deformation of an upper end of the elongate element to fix that element to the piece;
- Figure 4 schematically depicts machining of an upper surface of the dish-shaped piece and lower end of the elongate element to form a gripping pattern and annular channel respectively;
- Figure 5 schematically depicts the formation, by injection moulding, of a casing over the stem and an infill occupying a recess defined in the head;
- Figure 6 is an upper perspective view of the indicator as formed in accordance with the first embodiment
- Figure 7 is a lower perspective view of the indicator shown in Figure 6;
- Figure 8 is a cross sectional elevation view of the indicator shown in Figure 6 installed
- Figure 9 schematically depicts simultaneous cutting out and deforming of a section 5 of stainless steel plate, from which an indicator head derives, in the manufacture of an indicator in accordance with a second preferred embodiment of the present invention
- Figure 10 shows a dish-shaped piece formed by the step depicted in Figure 9;
- Figure 1 1 depicts preassembly of the piece shown in Figure 10 and an elongate element defining a stem of the indicator;
- Figure 12 schematically depicts subjection the resulting preassembly to a pressing process to effect plastic deformation and thus fixing of the element to the dish-shaped piece;
- FIGS 13A and 13B schematically illustrate the manner in which the dish-shaped piece arid an upper end of the elongate element are deformed in the step depicted in I S Figure 12;
- Figure 14 schematically illustrates the assembly created via the step depicted in Figure 12;
- Figure 15 schematically depicts machining of the assembly shown in Figure 14 to form the steel component of the indicator manufactured in accordance with the second 0 embodiment
- Figure 16 schematically depicts what remains of a deformed upper end of the elongate element following the machining step depicted in Figure 15;
- Figure 17 schematically depicts the formation, by injection moulding, of a casing over the stem and an infill occupying a recess defined in the head in the method according 5 to the second embodiment;
- Figure 18 is an upper perspective view of the indicator as formed in accordance with the second embodiment
- Figure 19 is a perspective view of a blank for forming a head of a tactile ground surface indicator in accordance with a third preferred embodiment of the invention.
- FIG. 20 is a schematic view showing preliminary fitting of an elongate metal element to the blank for the purposes of forming a metal stem of the indicator in the method according to the third embodiment;
- Figures 21 and 22 schematically depict subjection of a preassembly comprising the blank and elongate element, resulting from the step shown in Figure 20, to a pressing process to effect plastic deformation of an upper end of the elongate element to fix that element to the piece;
- Figure 23 schematically depicts machining of an assembly formed by the step shown in Figures 21 and 22 to form a gripping pattern and annular channel;
- Figure 24 schematically depicts the formation, by injection moulding, of a casing over the indicator stem defined as a result of the step shown in Figure 23;
- Figure 25 is a lower perspective view of the indicator as formed in accordance with the third embodiment.
- Figure 26 is a perspective view of a blank for forming a head of a tactile ground surface indicator in accordance with a fourth preferred embodiment of the invention.
- Figure 27 is a schematic view showing preliminary fitting of an elongate metal element to the blank for the purposes of forming a metal stem of the indicator in the method according to the fourth embodiment;
- Figures 28 and 29 schematically depict subjection of a preassembly comprising the blank and elongate element, resulting from the step shown in Figure 27, to a pressing process to effect plastic deformation and thus fixing of the blank to the element;
- Figure 30 schematically depicts machining of an assembly formed by the step shown in Figures 28 and 29 to form a gripping pattern and annular channel;
- Figure 31 schematically depicts what remains of a deformed upper end of the elongate element following the machining step depicted in Figure 30;
- Figure 32 schematically depicts the formation, by injection moulding, of a casing over the indicator stem defined as a result of the step shown in Figure 30;
- Figure 33 is a lower perspective view of the indicator as formed in accordance with the fourth embodiment.
- the present invention is embodied in methods of manufacturing a tactile ground surface indicator, and indicators manufactured by such methods, including the indicators 100, 100', 200, 200' illustrated in Figures 6, 18, 25 and 33 respectively.
- Manufacture of an indicator comprises interconnection of a piece defining a head of the indicator, or from which the head is derived (i.e., out of which the head is formed), to an element defining a stem of the indicator, or from which the stem is derived (i.e., out of which the stem is formed), by effecting plastic deformation of either or each of the element and piece.
- the indicator 100 comprises a head 5, a downwardly projecting stem 10 and a single-piece moulding 15 which defines both a casing 16 over the stem 10 and an infill 19 which occupies a downwardly opening recess formed in the underside of the head 5.
- Manufacture of the indicator 100 commences, referring to Figures 1 and 2, with the formation of a blank 2, from which the head 5 is derived, and an elongate element 6, from which the stem 10 is derived.
- the blank 2 comprises a section cut from 2.5mm thick stainless steel plate.
- the blank 2 is circular, thus assuming the configuration of a disc, and is formed with a hole 3 therethrough.
- the formation of the hole 3 and the formation of the disc perimeter are simultaneous, i.e. both are formed by subjecting the steel plate to a single punching step.
- the elongate element 6 is formed from a section of 4.5mm diameter stainless steel round bar, which section is machined at one end such that the element is configured with an end portion 7 of reduced diameter and an annular shoulder 9.
- the end portion 7 has a diameter which is a fraction larger than that of the hole 3 and is introduced into the hole 3, for example by gentle tapping of the opposite end of the element 6 with a hammer, such that the shoulder 9 abuts one of the main faces 4 of the blank, whereby there is formed a preassembly 1 1 , comprising the blank 2 and element 6, in which an axially outermost end of the end portion 7 projects proud of the other main face 4 of the blank 2.
- the element 6 is then introduced into a cylindrical cavity 20 in a mounting part 22 of a die press 27, whereby the blank 2 and exposed end of portion 7 are presented to a frustoconical cavity 25 of the die 28.
- the pressure applied through the exposed end of portion 7, by the face 25A may, in addition to causing the plastic deformation of that end, cause localised plastic deformation of an annular portion of the blank 2 adjacent the hole 3 such that at least part of the plug portion 7A is countersunk in the dish-shaped piece.
- the element 6 is thus swaged. More particularly, the portion 13 is trapped between the shoulder 9 and plug portion 7A such that the piece 12 is securely fixed to the element 6.
- the preassembly comprising the thus securely interconnected element 6 and piece 12, is machined such that a circumferential notch or channel 17 is formed into the element 6 adjacent a lower end thereof, whereby the stem 10 is defined, and an external profile is formed on the piece 12, whereby the head 5 is defined.
- the circumferential channel 17 can alternatively be formed in the element 6 before it is attached to the blank 2, without departure from the invention.
- the preassembly is mounted in a lathe, via element 6, and portions 14 and 13 machined such that the head 5 has a smooth inclined circumferential side face 5A and a top portion configured with concentric upwardly projecting rings 104 which define a grip that reduces the likelihood of slippage when the head 5 is stepped upon.
- the resulting assembly 30, comprising the head 5 and stem 10 may constitute an indicator in its own right.
- the stem 10 can be received directly into adhesive or cement provided in a cavity formed through the ground surface, whereby the adhesive/cement flows such that some of it occupies the annular channel, creating an interlock with the stem when the adhesive/cement sets, to anchor the head 5 over the ground surface.
- a deformable casing be applied to the stem, as outlined below.
- the assembly 30, referring to Figure 5, is mounted in an injection moulding apparatus 40 in a manner such that there is defined a mould cavity 41 which is bounded by the inner surface 5 A of the head 5 and by the exterior surface 10A of the stem 10, and also bounded by mould tool sections of the apparatus 40, whereby plastic injected into the cavity 41 forms a single-piece moulding 15 comprising an infill 19 which occupies the recess 8 defined by the dish-shaped head 5, and a casing 16 which surrounds the stem 10 and which additionally covers the lower end thereof whereby no part of the stem 10 is exposed (see also Figures 6 and 7).
- plastic flows into the annular channel 17 whereby an interlock between the moulding 15 and assembly 30 is created, reliably securing the former to the latter.
- the casing 16 is preferably moulded in a manner such that it is configured with four axially extending ribs 16A spaced therearound at 90° intervals, and a tapered lower end 16B.
- infilling of the recess 8 with plastic (to form infill 19) when the casing 16 is formed eliminates the need for a mould piece which would otherwise need to be received by the cavity, whereby the mould tooling is simplified, as will be recognised by a person skilled in the art.
- the infill 19 has a flat exterior face which is flush with a flat annular face defining the base of the head 5.
- installation of the indicator 100 comprises drilling of a cavity 80 into hard ground 85, e.g. concrete, introducing the end 18B of the casing 16 into the cavity 80 and driving the indicator 100 downwardly, such that the ribs are compressed radially inwardly by the circumferential cavity wall, until the base of the head 5 and underside (exterior face) of the infill 19 abut the ground surface 82, the resulting frictional and compressive engagement between the casing 16 and the ground securely anchoring the head 5 over the surface 82.
- hard ground 85 e.g. concrete
- indicator 100' shown in Figure 18, in accordance with a second preferred embodiment of the invention is the same as for the indicator 100 except with respect to the manner in which portions from which the head and stem derive are formed, brought together and fixed together.
- the section of stainless steel plate 2' from which the head 5 derives is simultaneously cut out from steel plate and deformed, in a combined punching and deforming/coining operation whereby circular piece 12' is formed, as illustrated in Figure 10.
- an apparatus 27' comprising a die 28' similar to the die 28 except that is additionally comprises an inner cylindrical cutter 29A, for forming the hole 3, and outer cylindrical cutter 29B, for forming the perimeter of the piece 12, and further comprising a part 22' similar to the part 22 except that it is formed with a shallow recess 20', which receives a portion of the cutter 29A once it has been driven through the plate section.
- the elongate element 6, prior to being received by piece 12' is formed with annular channel 17 and configured at an upper end thereof with a shallow head 6A, defining a radially outwardly projecting flange, and an undercut 6B, preferably defined by a taper, immediately below the head 6A.
- the element 6 and piece 12 are brought together by introducing a bottom end of the element 6 through the top end of the hole 3 and passing the stem-defining part of the element through the hole 3 such that the underside of the head 6A is received against the top face of the piece 12 and the undercut 6B is located within the hole 3 whereby it defines, as shown in Figure 13 A, a void 6C between the surface of the taper and the cylindrical internal face which defines the hole 3.
- the hole 3 has a greater diameter than in the previous embodiment, such that the stem-defining part of the element can be passed therethrough.
- the preassembly thus created is mounted in a press 27", which is similar to the apparatus 27, comprising a part 22 which receives the element 6 and is received against the bottom surface of the upper portion 13, and a part 23 which is receivable against the top of the head 6A, the working face of the latter part in this embodiment comprising solely a flat face 25C.
- the part 23 is then urged toward the part 22, or vice versa, whereby the face 25C and head 6A are forced against each other, such that an annular portion of the piece 12 adjacent the undercut 6B is plastically deformed (and the piece 12' thus swaged) and the material forming that portion is displaced so as to occupy the undercut and such that a bottom section of the head is countersunk in the thus-deformed central portion 13, whereby a plug portion 7A which is transversely too large to be drawn through the hole 3 is formed, as shown in Figure 13B.
- the underside of the head, the taper and the material occupying the void 6C together define an interlock whereby the piece 12 is securely fixed to the element 6.
- the thus-formed assembly shown in Figure 14, is then machined, as shown in Figure 15, to define the external profile of the head, including the smooth, inclined circumferential side face 5A and the top 5B formed with the grip comprising concentric upwardly projecting rings 104.
- the plug portion 7A' is partially countersunk, as described above, it can be machined such that what remains of it is flush with an upwardly facing surface of the head 5, as shown in Figure 16.
- the moulding 19 is then formed in exactly the same manner as described for the indicator 100.
- part of the piece 12 or element 6 is deformed plastically to effect fixing of the piece 12 and element 6 together.
- the attachment between the head and stem is effected in an alternative manner - e.g. by welding or fusion, or there is no stem whatsoever and the indicator head, formed by deformation and machining, is anchored over the ground surface in an alternative manner - e.g. by adhesive between the head underside and the ground surface - the indicators.
- the head 5 can vary in size and thickness. This being said, it is generally preferable that, in all of the embodiments, the lower end/base of the head have an outside diameter of about 35mm, the upper end of the head have a diameter of about 25mm and the head have a height of 4-5mm, whereby the indicator can comply with relevant prescribed standards, including Australian Standard 1428.
- the inventor has found that the steel plate section thickness being 2.5mm (at least) is sufficient to permit, advantageously, machining of the piece 12, coined from that section, to form the external profile of the head 5 in the indicators 100 and 100'.
- the indicator 200 also comprises a head 5, a downwardly projecting stem 10 attached to the head 5, and a moulding defining casing 16 over the stem 10.
- the interconnection between the head and stem in this embodiment is effected in the same manner as in the manufacture of indicator 100.
- formation of the generally frustoconical shape of the head 5 in this embodiment does not comprise plastic deformation/coining.
- the blank 2 is punched from thicker steel plate, preferably having a thickness of 5-6mm and, once the elongate piece 6 has been fitted thereto, the resulting preassembly 1 1 is pressed, using apparatus 27", in a manner such that the end portion 7 (which in this embodiment is longer such that its end protrudes from an upper end of the blank 2) mushrooms/spreads out and preferably also an annular portion of the blank 2 adjacent the hole 3 plastically deforms such that at least part of the thus-formed plug portion 7A is countersunk in the blank (in generally the same manner as described for the indicator 100).
- machining is then carried out such that the external profile of the head 5, comprising the side face 5A and top portion 5B having the gripping pattern comprising rings 104, is formed.
- the machining can, advantageously, include machining of an upper end portion of the plug portion 7A to form a flat upwardly facing surface that is flush with an annular surface portion adjacent thereto which is formed by machining the blank 2.
- the head 5 having not been formed by coining/deformation, comprises a solid piece of steel having a flat base receivable directly against the ground surface; it does not include downwardly opening recess 8. Accordingly, referring to Figure 24, the injection moulding is effected to create only casing 16, since the flat base of the steel piece defines an end of the mould cavity.
- Manufacture of indicator 200' is essentially the same as the manufacture of indicator 200 with respect to formation of the head 5, which does not comprise plastic deformation/coining but instead, referring to Figure 26, comprises punching the blank 2 from thicker steel plate, preferably having a thickness of 5-6mm.
- the manufacture of indicator 200' differs with respect to the manner in which the portion from which the stem derives is formed and the interconnection between the stem and head is formed, and is consistent in this regard with the manufacture of the indicator 100', as will be apparent from the following description.
- elongate element 6 is formed with annular channel 17 and configured at an upper end thereof with a shallow head 6A, defining a radially outwardly projecting flange, and an undercut 6B, preferably defined by a taper, immediately below the head 6A, the element 6 and blank 2 are brought together by introducing a bottom end of the element 6 through the top end of the hole 3 and passing the stem-defining part of the element through the hole 3 such that the underside of the head 6A is received against the top face of the blank 2 and the undercut 6B is located within the hole 3 whereby it defines a void, essentially the same as void 6C shown in Figure 13 A, between the surface of the taper and the cylindrical internal face which defines the hole 3.
- the preassembly thus created is mounted in apparatus 27", and the face 25C and head 6A are forced against each other, such that an annular portion of the blank 2 adjacent the undercut 6B is plastically deformed and the material forming that portion is displaced so as to occupy the undercut and such that a bottom section of the head 6 A is countersunk in the thus-deformed central portion whereby a plug portion 7A which is transversely too large to be drawn through the hole 3 is formed, as shown in Figure 31.
- the underside of the head, the taper and the material occupying the void 6C together define an interlock whereby to create the interconnection.
- the thus-formed assembly is then machined, as shown in Figure 30, to define the external profile of the head, including the smooth, inclined circumferential side face 5 A and the top 5B formed with the grip comprising concentric upwardly projecting rings 104.
- the plug portion 7A' is partially countersunk, as previously described, it can be machined such that what remains of it is flush with an upwardly facing surface of the head 5, as previously described.
- the moulding 19 is then formed in exactly the same manner as described for the indicator 200.
- the entirety of that part of the head which is visibly exposed when the indicator is installed is defined by or formed out of the metal component which is machined and/or coined/stamped.
- part of that visually exposed part may, without departure from the invention, be defined by another component; for example, the head of the finished indicator may be formed so as to include an infill, e.g. comprising carborundum, which defines an anti-slip top surface of the head.
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- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19163107.6A EP3531406B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2012903258A AU2012903258A0 (en) | 2012-07-30 | Improvements relating to tactile ground surface indicators | |
PCT/AU2013/000122 WO2014019012A1 (en) | 2012-07-30 | 2013-02-13 | Improvements relating to tactile ground surface indicators |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19163107.6A Division EP3531406B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
EP19163107.6A Division-Into EP3531406B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
Publications (3)
Publication Number | Publication Date |
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EP2880648A1 true EP2880648A1 (de) | 2015-06-10 |
EP2880648A4 EP2880648A4 (de) | 2016-06-15 |
EP2880648B1 EP2880648B1 (de) | 2019-06-26 |
Family
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Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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EP13824890.1A Active EP2880648B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
EP19163107.6A Active EP3531406B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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EP19163107.6A Active EP3531406B1 (de) | 2012-07-30 | 2013-02-13 | Verbesserungen an taktilen bodenflächenindikatoren |
Country Status (7)
Country | Link |
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EP (2) | EP2880648B1 (de) |
CN (2) | CN104704548B (de) |
AU (3) | AU2013200768C1 (de) |
HK (1) | HK1211132A1 (de) |
NZ (2) | NZ630063A (de) |
SG (2) | SG10201702089TA (de) |
WO (1) | WO2014019012A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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RU199715U1 (ru) * | 2020-03-23 | 2020-09-16 | Общество с ограниченной ответственностью "Вертикаль" | Тактильная шуц-линия из холодного пластика |
RU199716U1 (ru) * | 2020-03-23 | 2020-09-16 | Общество с ограниченной ответственностью "Вертикаль" | Тактильная лента с закладным элементом |
RU198740U1 (ru) * | 2020-03-23 | 2020-07-24 | Общество с ограниченной ответственностью "Вертикаль" | Тактильная шуц-линия из полимерного материала |
RU206392U1 (ru) * | 2021-06-11 | 2021-09-08 | Общество с ограниченной ответственностью "Вертикаль" | Тактильный наземный указатель |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB273030A (en) * | 1926-04-06 | 1927-06-30 | Frederick Spencer Freestone | Improvements in devices for directing vehicular and other road traffic |
US1736830A (en) * | 1927-08-27 | 1929-11-26 | Chicago Mfg & Distributing Com | Traffic marker |
US5302049A (en) * | 1991-01-14 | 1994-04-12 | Guidance Systems, Inc. | Mobility guide tile for visually handicapped |
JP3561810B2 (ja) * | 1994-08-26 | 2004-09-02 | 株式会社ユニオン | 視覚障害者用歩行誘導鋲 |
JPH09250113A (ja) * | 1996-03-15 | 1997-09-22 | Daido Steel Co Ltd | 歩行者用案内鋲及びその製造方法 |
JPH09256331A (ja) * | 1996-03-25 | 1997-09-30 | Daido Steel Co Ltd | 歩行者用案内鋲とその製造方法 |
JPH11209935A (ja) * | 1998-01-27 | 1999-08-03 | Nippon Haatobiru Kogyo Kk | 点状歩行誘導鋲 |
WO2000079696A1 (en) * | 1999-06-18 | 2000-12-28 | Avery Dennison Corporation | Underfoot tactile safety guidance system |
JP3403705B2 (ja) * | 2000-09-12 | 2003-05-06 | 有限會社三協金属製作所 | 歩行誘導体の基体 |
AU2006201654A1 (en) * | 2005-04-20 | 2006-11-09 | Dece Holdings Pty Ltd | Tactile indicator with visually contrasting features |
AU2012100680B4 (en) * | 2007-07-05 | 2012-07-19 | Cta Australia Pty Ltd | Tactile ground surface indicator |
CN101734417B (zh) * | 2008-11-13 | 2012-12-26 | 西奎斯特盖有限责任合作公司 | 刺穿衬板的可扭弯的封闭件 |
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2013
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- 2013-02-13 AU AU2013200768A patent/AU2013200768C1/en active Active
- 2013-02-13 SG SG10201702089TA patent/SG10201702089TA/en unknown
- 2013-02-13 NZ NZ710582A patent/NZ710582A/en not_active IP Right Cessation
- 2013-02-13 EP EP13824890.1A patent/EP2880648B1/de active Active
- 2013-02-13 AU AU2013200754A patent/AU2013200754C1/en active Active
- 2013-02-13 EP EP19163107.6A patent/EP3531406B1/de active Active
- 2013-02-13 SG SG11201500761TA patent/SG11201500761TA/en unknown
- 2013-02-13 CN CN201380050638.XA patent/CN104704548B/zh active Active
- 2013-02-13 CN CN201910018150.8A patent/CN110080126A/zh active Pending
- 2013-02-13 WO PCT/AU2013/000122 patent/WO2014019012A1/en active Application Filing
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2015
- 2015-11-30 HK HK15111744.9A patent/HK1211132A1/xx unknown
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- 2019-02-26 AU AU2019201355A patent/AU2019201355A1/en active Pending
Also Published As
Publication number | Publication date |
---|---|
AU2013200754A1 (en) | 2014-02-13 |
SG11201500761TA (en) | 2015-04-29 |
NZ630063A (en) | 2016-11-25 |
SG10201702089TA (en) | 2017-04-27 |
AU2013200768A1 (en) | 2014-02-13 |
EP3531406A1 (de) | 2019-08-28 |
CN110080126A (zh) | 2019-08-02 |
CN104704548A (zh) | 2015-06-10 |
EP2880648B1 (de) | 2019-06-26 |
WO2014019012A1 (en) | 2014-02-06 |
AU2013200754B2 (en) | 2015-07-30 |
AU2013200754C1 (en) | 2018-06-07 |
AU2013200768C1 (en) | 2015-10-22 |
AU2013200768B2 (en) | 2015-05-07 |
EP2880648A4 (de) | 2016-06-15 |
AU2019201355A1 (en) | 2020-09-10 |
EP3531406B1 (de) | 2020-09-16 |
CN104704548B (zh) | 2019-08-02 |
NZ710582A (en) | 2017-02-24 |
HK1211132A1 (en) | 2016-05-13 |
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