Classifications

• • E—FIXED CONSTRUCTIONS
  • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
  • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
  • E02D29/00—Independent underground or underwater structures; Retaining walls
  • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor
  • E02D29/14—Covers for manholes or the like; Frames for covers
  • E02D29/1427—Locking devices
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03F—SEWERS; CESSPOOLS
  • E03F5/00—Sewerage structures
  • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
  • E03F5/06—Gully gratings
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03F—SEWERS; CESSPOOLS
  • E03F5/00—Sewerage structures
  • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
  • E03F5/06—Gully gratings
  • E03F2005/061—Gully gratings hinged to the body of the gully
• • E—FIXED CONSTRUCTIONS
  • E03—WATER SUPPLY; SEWERAGE
  • E03F—SEWERS; CESSPOOLS
  • E03F5/00—Sewerage structures
  • E03F5/04—Gullies inlets, road sinks, floor drains with or without odour seals or sediment traps
  • E03F5/06—Gully gratings
  • E03F2005/065—Gully gratings with elastic locking elements

Definitions

• the present invention relates to a grid allowing the obturation of gutters for example.
• a known grid intended to be mounted in a frame for closing off a manhole cover and comprising intersecting bars, two external bars at the end of the grid being elastically deformable relative to the other bars so that the grid is fixed elastically in the frame.
• Each end bar is secured to the grid by its two ends between which is secured a hookable lug in a notch formed in the frame.
• a tool such as a crowbar, is inserted between the frame and one of the end bars which deforms in the direction of an adjacent bar so as to remove the lug of its notch.
• This known grid has the drawback that the tool necessary for extracting the grid risks damaging the elastically deformable end bar since this tool acts directly on this bar.
• each elastically deformable external bar is visible from the outside in the mounted position of the grid in its frame, which allows malicious people to immediately know the means of locking the grid in its frame and fraudulently attempting to open the gate.
• the foundry manufacturing process of such grids when they are brought in bulk with one another in a recovery tank, they can collide with the risk of damaging in particular the locking pins present on the elastically deformable external bars.
• the object of the present invention is to eliminate the above drawbacks of the known grids.
• the invention provides a grid intended to be mounted in a frame for closing a gutter or the like and comprising crisscrossed bars, at least one of the bars of the grid being elastically deformable relative to the other bars and comprising a finger which can be locked to the frame so that the grid is fixed elastically in the frame, and which is characterized in that the elastically deformable bar is an internal bar of the grid and has a free end comprising the locking finger which is located below of a solid outer edge of the grid extending transversely to the elastically deformable bar so that the finger is on the one hand protected and on the other hand practically invisible from the outside in the position mounted in the frame.
• the grid comprises a second elastically deformable internal bar having at its free end a finger for locking to the frame and which is located below an external full edge of the grid, opposite the external protective full edge of the finger of the first internal bar, and extending transversely to the second elastically deformable bar, so as to allow the grid to be fixed elastically in the frame regardless of their relative direction of orientation.
• the grid comprises a ply generally made up of parallel bars comprising the two elastically deformable internal bars and transverse bars, and each locking finger is an extension of the corresponding internal bar and offset downward relative to the external surface of this bar to be placed under the corresponding full outer edge of the grid and whose external surface is in the same plane as that of the internal bar.
• Each locking finger engages forcefully in a part in the form of a locking hook secured to the internal face of the side wall. corresponding to the frame and located near a corner of this frame.
• Each locking finger comprises a curvilinear guide ramp extended by a free end in a rounded lug which snaps into the locking hook-shaped part with a free rounded end also elastically allowing the finger to be unlocked from the hook-shaped part when extracting the grid from the frame to bring it to its open position.
• the grid can be removed from the frame on one side or from its opposite side by introducing a tool, such as a crowbar, into the space existing between the frame and the outer bar of the grid adjacent to the inner bar. elastically deformable and exerting under the external bar an effort of lifting and unlocking of the grid.
• a tool such as a crowbar
• the grid comprises four support legs located respectively at the four corners of the grid and which are each supported on a seating surface located in a corner of the frame by the locking force exerted by the two hook-shaped parts on the two locking fingers.
• the grid is retained in the frame in its open position by two of its support feet located on the same side and locked in abutment respectively on two erected walls of the frame and one of which is constituted by one of the parts in the form of a locking hook.
• the grid can be directly and completely removed from the frame after unlocking one of the two locking fingers.
• the locking fingers are diagonally opposite.
• the parallel and transverse bars of the grid define on one side thereof parallel openings for the passage of runoff water and on the other side of the transverse openings for the passage of runoff water, and the grid is fixed in the frame so that the parallel lights are arranged on the sidewalk side and the transverse lights are arranged on the roadside regardless of the direction of attachment of the frame in the roadway.
• FIG. 1 is a perspective view of the grid of the invention in the fixed position in its frame;
• FIG. 2 is a perspective view similar to that of Figure 1 and showing the lifting of one side of the grid from its frame by an operating tool;
• - Figure 3 is a perspective view showing the grid in the open position of one side of the frame;
• Figure 4 is a perspective view showing the grid in the open position on the side of the frame opposite to that of Figure 3;
• FIG. 5 is an enlarged perspective view along arrow N of Figure 3;
• FIG. 6 is an enlarged perspective view along arrow VI of Figure 4;
• FIG. 7 is a view partially broken away and enlarged along the arrow Nile in FIG. 1 and representing the grid in the locked position in its frame; and
• Figure 8 is a view similar to that of Figure 7 and showing a locking finger in the position before picking in its corresponding locking hook when the grid is simply placed on the frame.
• the grid 1 is fixed elastically in a frame 7, in the present case of rectangular shape, integral with a floor (not shown) for closing a gutter, it being understood that it could be used for closing a manhole cover.
• the grid 1 comprises two internal bars 2 elastically deformable relative to the other bars 2 and allowing the removable fixing of the grid in the frame 7.
• the two elastically deformable bars 2 are located opposite each other by being respectively adjacent to the two external end bars 2 located near the walls constituting the width of the frame 7 when the grid 1 is fixed in this latest.
• the two elastically deformable bars 2 are secured at each of their ends to a transverse bar 3 and carry at their opposite free ends respectively two fingers 8 which can be locked to the frame 7 as will be seen later and which are directed in opposite directions to each other in a direction parallel to the width of the frame so as to be substantially diagonally opposite.
• Each locking finger 8 is located in extension of the corresponding internal bar 2 and is shifted downward relative to the external surface of this bar so as to be disposed under a corresponding full external edge 9 of the grid 1 and whose external surface is located in the same plane as that of the internal bar 2.
• the two solid outer edges 9 of the grid start respectively from two diagonally opposite corners of the grid, extending parallel in opposite directions to each other over a determined distance on one side of the grid, each of these solid edges 9 being intended to be located opposite a part of the longitudinal wall of the frame 7 when the grid is fixed therein.
• Each locking finger 8, while being housed under the solid outer edge 9 of the grid, extending over a length substantially equal to the width of this edge, is thus protected from impact during the foundry manufacture of the grids.
• each locking finger 8 is located immediately below its solid outer edge 9 and therefore protected from the outside, when the grids are brought in bulk into a recovery tank after manufacture, the locking fingers cannot be subjected to shock when the grates collide with each other.
• each locking finger 8 is not only protected from the outside by the edge 9, but is also practically invisible from the outside, thereby making access to the locking finger for malicious people.
• Each locking finger 8 can forcefully engage in a part in the form of a locking hook 10 integral with the internal face of the longitudinal wall of the frame 7 and located near a corner of this frame, the two hook-shaped parts 10 being of course located in the vicinity of the two diagonally opposite corners of this frame.
• Each hook-shaped part 10 extends substantially perpendicularly from a seat surface 11 which is itself perpendicular to the longitudinal wall of the frame 7.
• each locking finger 8 which extends approximately perpendicularly below its solid external edge 9, comprises a curvilinear ramp 8a ensuring the guidance of finger 8 on the upper rounded end 10a of the part in the form of a locking hook 10 and an upper free end in the form of a rounded beak 8b intended to force-engage by snap-fastening in the part in the form of a hook 10 as shown in FIG. 7.
• FIG. 8 shows the position of each locking finger 8 when the grid 1 is simply placed in the frame 7 before exerting on the grid the downward force allowing the locking fingers to be embedded respectively in their locking hooks 10.
• each locking finger 8 thus shows that the beak 8b of each locking finger 8 is in abutment on the rounded upper end edge 10a of the part in the form of a locking hook 10.
• the parts are rounded the beak 8b of the finger 8 and the end 10a of the hook-shaped part 10 cooperate so as to facilitate the unlocking of the finger 8 of the part 10 during a lifting by force of the corresponding end of the grid by an operating tool, such as a crowbar 12.
• the grid 1 further comprises four support feet 13 located respectively at the four corners of the grid and which come to bear respectively on the four seat surfaces 11 located at each corner of the frame 7 when the grid is fixed in this frame.
• the two parts in the form of a locking hook 10 exert respectively on the two fingers of locking 8 an effort keeping the support feet 13 in abutment on the seating surfaces 11.
• the grid also includes four other support feet 14 integral with the ends of two transverse plates 15 extending perpendicularly below the upper surface of the grid 1 at each internal parallel bar 2 adjacent to the corresponding elastically deformable internal bar 2. locked position of the grid 1 in the frame 7, the four feet of the support 14 are held in abutment, by the locking means 8 and 10, respectively on four seating surfaces 16 in extension of the seating surfaces 11 but at a lower level relative to the latter.
• the feet 14 and the stiffening plates 15 make it possible to suppress any bending or deformation of the grid when heavy vehicles pass over it.
• each locking finger 8 owing to the fact that it is between two support feet 13 and 14 projecting more below the grid than the finger, is even better protected during the manufacture of the grid.
• the frame 7 being set up and fixed on a roadway for example, it suffices to position the grid 1 in line with the frame 7.
• FIG. 7 also shows in phantom the elastic deformation undergone for each bar 2 during the force engagement of the finger 8 in its hook locking 10.
• the elastic deformation of each internal bar 2 is made possible by the fact that the grid is made of cast iron GS (spheroidal graphite).
• the grid 1 can be manually lifted by gripping the external bar 2 and it can pivot relative to the frame 7 by its opposite side until to be brought to its open position shown in Figure 3 in which it is maintained, at an angular position of approximately 120 °, relative to the frame 7 by the two feet 13 located on the pivoting side of the grid and whose the free ends are braced in abutment on the one hand on the hook-shaped part 10 and on the other hand on an upright wall 17 secured to the longitudinal wall of the frame 7 opposite the frame 10 and s' extending perpendicularly below us of the corresponding seating surface 11.
• the grid 1 is locked in its open position by being supported, by its corresponding side, on the two opposite seating surfaces 11. In its position opening, the grid 1 can be disengaged from this position and removed completely by lifting its frame 7. It is also possible to disengage the grid 1 completely and directly from the frame
• the grid 1 can be invariably removed from one side or the other by the tool 12 to unlock the corresponding finger
• the mounting direction of the grid 1 relative to the frame 7 can be performed independently of their relative orientations.
• the grid 1 may nevertheless be fixed therein thanks to the special arrangement of the locking means 8, 10.
• the parallel lights 4 of which must be disposed on the sidewalk side regardless of the direction of mounting of the frame 7 in the roadway, the grid 1 can always be fixed in it so that the lights 4 are actually located on the sidewalk side, the lights 5 being located on the road side.
• the frame 7 can be arranged without any particular constraint.
• the grid can be fixed in one direction or the other in this framework if such a grid was of the type comprising parallel and transverse bars defining regular lights oriented in the same direction.
• the extraction of the grid from its frame is carried out by a tool which does not act directly on the elastically deformable bar but on the rigid external end bar adjacent to the elastically deformable internal bar, which completely eliminates any risk of deterioration of the latter.

Landscapes

• Engineering & Computer Science (AREA)
• Life Sciences & Earth Sciences (AREA)
• Environmental & Geological Engineering (AREA)
• Hydrology & Water Resources (AREA)
• Public Health (AREA)
• Water Supply & Treatment (AREA)
• Health & Medical Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Mining & Mineral Resources (AREA)
• Paleontology (AREA)
• Civil Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structural Engineering (AREA)
• Road Paving Structures (AREA)
• Sewage (AREA)
• Glass Compositions (AREA)
• Constitution Of High-Frequency Heating (AREA)
• Paper (AREA)
• Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
• Air-Flow Control Members (AREA)
• Specific Sealing Or Ventilating Devices For Doors And Windows (AREA)
• Baking, Grill, Roasting (AREA)
• Bidet-Like Cleaning Device And Other Flush Toilet Accessories (AREA)
• Devices For Medical Bathing And Washing (AREA)
• External Artificial Organs (AREA)
• Developing Agents For Electrophotography (AREA)
• Diaphragms For Electromechanical Transducers (AREA)
• Golf Clubs (AREA)

Priority Applications (1)

Applications Claiming Priority (3)

Publications (2)

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ID=30129668

Family Applications (1)

Country Status (16)

Families Citing this family (32)

Family Cites Families (13)

• 2002
  • 2002-08-02 FR FR0209895A patent/FR2843139B1/fr not_active Expired - Fee Related
• 2003
  • 2003-07-29 DE DE60325058T patent/DE60325058D1/de not_active Expired - Lifetime
  • 2003-07-29 PL PL373070A patent/PL201236B1/pl not_active IP Right Cessation
  • 2003-07-29 WO PCT/FR2003/002391 patent/WO2004015213A2/fr not_active Ceased
  • 2003-07-29 JP JP2004526957A patent/JP2005534837A/ja active Pending
  • 2003-07-29 CN CNB038186365A patent/CN1330832C/zh not_active Expired - Fee Related
  • 2003-07-29 ES ES03755649T patent/ES2318159T3/es not_active Expired - Lifetime
  • 2003-07-29 EP EP03755649A patent/EP1525354B1/de not_active Expired - Lifetime
  • 2003-07-29 PT PT03755649T patent/PT1525354E/pt unknown
  • 2003-07-29 US US10/523,554 patent/US7303669B2/en not_active Expired - Fee Related
  • 2003-07-29 RS YUP-364/04A patent/RS50733B/sr unknown
  • 2003-07-29 DK DK03755649T patent/DK1525354T3/da active
  • 2003-07-29 SI SI200331503T patent/SI1525354T1/sl unknown
  • 2003-07-29 AU AU2003273490A patent/AU2003273490B2/en not_active Ceased
  • 2003-07-29 AT AT03755649T patent/ATE416279T1/de active
  • 2003-07-29 ME MEP-17/09A patent/ME00583A/xx unknown

Non-Patent Citations (1)

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