Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B65/00—Locks or fastenings for special use
  • E05B65/006—Locks or fastenings for special use for covers or panels
• • 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
  • 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
  • E02D29/1481—Security devices, e.g. indicating unauthorised opening
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B17/00—Accessories in connection with locks
  • E05B17/14—Closures or guards for keyholes
  • E05B17/18—Closures or guards for keyholes shaped as lids or slides
  • E05B17/186—Closures or guards for keyholes shaped as lids or slides sliding
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05C—BOLTS OR FASTENING DEVICES FOR WINGS, SPECIALLY FOR DOORS OR WINDOWS
  • E05C1/00—Fastening devices with bolts moving rectilinearly
  • E05C1/08—Fastening devices with bolts moving rectilinearly with latching action
  • E05C1/12—Fastening devices with bolts moving rectilinearly with latching action with operating handle or equivalent member moving otherwise than rigidly with the latch
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
  • E05B35/008—Locks for use with special keys or a plurality of keys ; keys therefor for simple tool-like keys

Definitions

• Locking and unlocking device by means of a key of a buffer on a frame with possibility of automatic locking without key of this stamp on the frame
• the present invention relates to a locking and unlocking device with a key of a buffer or cover on a frame, including the manhole.
• Document FR 2 979 368 discloses such a device comprising a latch integral with the buffer which has an opening opening for access to the latch for the key which comprises an arm, one end of which makes it possible to maneuver the latch when the key is introduced into the opening of the buffer of a locking position in which a bolt of the lock is held prisoner of a striker of the frame to an unlocked position for which the bolt is released from the striker.
• This lock comprises a rotor rotatably mounted in the buffer, accessible at one of its ends through the opening opening and carrying at its opposite end the bolt constituted by a substantially rectangular flat transverse arm so that the rotation of the Rotor under the action of the key causes the pivoting in its own plane of the bolt between its positions prisoner and unobstructed in and strike the frame.
• the opening opening of the buffer coaxial with the end of the rotor can be engaged with the end of the key arm, is closed by a plug pressed against the pad under its closed position the opening opening by a return spring and the key, when introduced into the opening opening, causes the depression of the closure cap against the restoring force of the spring along the rotor whose end is in engagement with the end of the arm of the key.
• the closing cap of the opening opening prevents debris from passing through the opening opening of the buffer can reach some of the internal components of the lock and lead to difficult to pivot by the key of the bolt of its locking position of the buffer to the frame at its unlocking position of this frame buffer.
• the closing cap of the opening opening of the buffer prevents detritus from accumulating in the opening opening and obstructing it, otherwise the introduction of the key into the opening opening of the buffer for it would be impossible to maneuver the latch bolt.
• the flat bolt of the lock is in its position corresponding to that of locking the buffer to the frame.
• the operator especially when the buffer is hinged to one side of the frame, accidentally causes the buffer to tip to its closed position of the frame, thereby damaging the latch bolt and , therefore the lock, by striking violently the corresponding side wall of the frame.
• the present invention aims to overcome the disadvantages above.
• the device for locking and unlocking with a key of a buffer on a frame comprising a lock secured to the buffer which has an opening opening access to the lock for the key having an arm whose one end allows the lock to be operated when the key is inserted into the opening of the buffer of a locking position in which a bolt of the lock is held prisoner of a striker of the frame to lock the lock buffer in the frame at an unlocking position for which the bolt is released from the striker to allow the displacement of the buffer to its position released from the opening of the frame
• the lock comprising a drive mechanism connected to the bolt so as to allow the movement of the bolt under the action of the key between its locked and unlocked positions of the striker, characterized in that the latch bolt comprises a rod returned to its locked position of the striker by an elastic return member and the drive mechanism cooperates with the bolt under the action of the key to move in translation against the restoring force of the return member the rod of the bolt at its unobstructed position of the striker, in that the bolt of
• the drive mechanism comprises a rotor rotatably mounted in the pad perpendicularly below it, accessible at one of its ends through the opening and a cam member secured to the opposite end of the rotor and engaged in a recess of the rod of the bolt and cooperating with the cam part of the rotor when the latter is operated by the key engaged with the corresponding end of the rotor to move in translation against the restoring force of the organ return the bolt rod to its released position of the striker.
• the rod of the bolt and the return member are coaxial and housed perpendicularly to the rotor in a housing removably fixed under the pad and the end portion of the rotor having the cam passes through a wall of the housing located on the inner side of the pad so that the cam engaged in the recess of the rod of the bolt is housed in the housing.
• the rotor cam extends perpendicularly to the longitudinal direction of the rod of the bolt when the latter occupies its captive position of the striker.
• the rod of the bolt is supported by an inner face of its obviously located on the return member member on a side face of the rotor adjacent to the cam when the rod of the bolt occupies its captive position in the striker.
• the bolt rod is flat and the housing comprises two parts removably attached to each other respectively a first substantially flat-shaped ⁇ -shaped cross-section portion in which are housed guided sliding bolt rod and the return member and a second flat plate-shaped portion constituting the aforementioned wall of the housing through which the cam and to which are releasably attached the two elongate side branches of the first portion.
• the second portion of the housing comprises a plate secured to an edge of the second portion so as to close the end opening of the first portion opposite to that allowing the passage of the beveled end of the rod bolt and on which plate bears one end of the return member constituted by a helical compression spring.
• the second part of the housing is removably fixed under the buffer.
• the opening opening of the buffer is coaxial with the end of the rotor can be engaged with the end of the arm of the key and in that the key, when introduced into the opening opening, causes the depression closing cap against the restoring force of the spring along the rotor whose end is engaged with the end of the arm of the key.
• a cylindrical barrel fixed under the buffer and having a transverse end wall through which is formed the opening opening of the buffer which comprises a circular central orifice and two diametrically opposed grooves opening into the circular central orifice and the closing cap is in the form of a cylindrical section slidably mounted guided in the cylindrical barrel and on the rotor of the lock and having two cylindrical end portions separated from one another by a flange slidable in the cylindrical barrel, l one of the end portions of the closure cap having two diametrically opposite pins engaged respectively in the two grooves of the opening opening with the flange bearing under the transverse wall of the barrel when the closure cap is in its closed position of the opening opening, the tenons of the closure cap being disengaged from the opening opening when the key arm is engaged with the end of the lock rotor to rotate the rotor to its position at which the latch bolt is disengaged from the striker frame.
• the closure cap is integral in rotation with the end of the rotor of the lock.
• the return spring of the closure cap is housed in the cylindrical barrel being mounted prestressed between the flange of the cylindrical plug and an internal shoulder of the cylindrical barrel.
• the transverse end wall of the cylindrical barrel is part of a cylindrical sleeve attached to the corresponding end portion of the cylindrical barrel.
• the cylindrical barrel is integral with the second flat plate-shaped portion of the housing and perpendicular thereto.
• the key comprises at the tubular end of its arm two diametrically opposite lugs of form conjugated to the grooves of the opening opening to allow the engagement of the tubular end of the arm of the key through the opening opening by pushing the closure plug into the cylindrical shaft to meet the restoring force of the spring and to a position at which the two lugs of the key are brought in support under the transverse wall of the cylindrical drum by rotation of the key engaged with the rotor of the lock and held under this wall by the closing cap and the return force exerted by the spring on the collar of the closure cap.
• FIG. 1 is a top view of a pad mounted in locked position on a frame for manhole
• FIG. 2 is a bottom view of the buffer and frame assembly of FIG.
• FIG. 3 is a sectional view along the line III-III of Figure 2;
• FIG. 4 is an enlarged view of the circled portion IV of Figure 3;
• FIG. 5 is a perspective view from below of the buffer and frame assembly of FIG. 1;
• FIG. 6 is an enlarged view of the portion circled at VI of FIG. 5;
• FIG. 7 is an exploded perspective view of the lock of the invention.
• FIG. 8 is a perspective view of the lock of Figure 7 in the assembled position
• Figure 9 is a view similar to that of Figure 8 showing the release key engaged in the lock
• FIG. 10 is a perspective view of the key for unlocking the stamp; and FIG. 11 is a view of the unlocking key along arrow XI in FIG.
• the locking and unlocking device of the invention which will be described below is intended to equip a buffer or cover 1 to seal a frame or frame 2 delimiting the access opening including a look of ground or buried visit.
• the locking and unlocking device can be actuated by a key 3 as will be seen later to unlock the buffer 1 of the frame 2 and disengage it from this frame to access the manhole and, if necessary, lock it to new to this frame.
• the pad 1 has a square shape and is housed in its closed position in a square opening of the frame 2, but the pad 1 can be circular to ensure the closure of the circular opening of the corresponding frame 2. Any other form of pad of Pavement look can be considered as rectangular or triangular.
• the buffer 1 is pivotally mounted at one of its straight sides to an adjacent side walls 2a of the frame 2 about a hinge axis A as is known per se to allow the tilting of the buffer 1 relative to the frame 2 between its open and closed positions of the frame and hold the buffer to the frame 2 when the buffer is in its upright raised position of this opening.
• the articulation of the buffer 1 to the frame 2 may be of the type allowing the removal of the buffer 1 of this frame in the standing position of the buffer 1.
• a non-articulated device whose buffer would be maneuvered by a movement "pulled-slip" to put it in the opening of the frame.
• the pad 1 has its upper wall forming a substantially planar web 1 having on its outer surface non-skid protruding elements 1b.
• the pad 1 further includes an opening 4 opening outwards at the flat upper face 1c of the wall 1a and allowing access by the key 3 to a latch 5 fixed under the wall 1a of the buffer 1 .
• the latch 5 is located opposite the side wall 2a of the frame 2 opposite that of articulation of the buffer 1 to this frame.
• the lock will be located opposite a wall adjacent to that of the joint.
• the key 3 comprises an arm or longitudinal rod 6, one end of which is provided with a sleeve 7 coaxial with the arm 6 and the opposite end is provided with a maneuvering handle 8 extending perpendicularly from one side to the other. other of the arm 6.
• the sleeve 7 has an internal cavity 9 allowing to be engaged with a rotor 10 rotatably mounted in the buffer 1 to operate the latch 5 of a locking position in which a bolt 1 1 of the latch 5 is held prisoner of a striker 12 of the frame 2 to lock the buffer 1 to the frame 2 to an unlocked position for which the bolt 1 1 is released from the striker 12 to allow the removal of the buffer 1 of the frame 2.
• the striker 12 is formed by a recess made in an internal thickness of the side wall 2a of the frame opposite to the hinge axis A.
• the rotor 10 of the latch 5 extends perpendicularly to the upper wall 1a of the buffer 1 under it and is connected at its end opposite to that intended to engage with the sleeve 7 of the key 3, to the bolt 1 1 so as to allow the movement of the bolt 1 1 under the action of the key 3, when the sleeve 7 is engaged with the end 10b of the rotor 10, between its captive positions and released from the striker 12 of the frame 2.
• the reference V designates an assistance cylinder to the opening of the buffer and mounted articulated between the buffer 1 and the side wall 2a of the frame 1 provided with the hinge A.
• the reference B designates a buffer holding crutch 1 at its upright position of the opening of the frame 2 and having one of its ends connected hinged to the side wall 2a of the frame 2 provided with the hinge A and its opposite end shaped and adapted to cooperate with a rib 1 n buffer 1 under the latter to block the buffer 1 to its standing position.
• An elastic support J is fixed under the buffer 1 and bears on an inner peripheral nipple 2n of the frame 2 when the buffer 1 closes the frame 2.
• This elastic support J may have a sealing function.
• the bolt 1 1 of the latch 5 comprises a rod 1 1 a, preferably constituted by a flat slender bar, housed guided sliding in a housing 13 removably fixed under the buffer 1, the rod 1 1 a extending in a direction substantially parallel to the upper wall 1a of the buffer 1 and transverse to the side wall 2a of the frame 2 provided with the hinge A when it is hinged.
• the rod 1 1 a bolt January 1 is recalled to its engagement position in the striker 12 of the frame 2 by a resilient member 14 preferably constituted by a helical compression spring housed in the housing 13 coaxially to the rod 1 1a of the bolt 1 1 and perpendicular to the rotor 10.
• the housing 13 comprises two parts 15, 16 removably attached to each other by fixing screws 17 and respectively comprising a first elongate portion 15 of substantially flat-shaped ⁇ -shaped cross-section 18 in which are guided sliding guide the rod 1 1 a of the bolt 1 1 and the return member 14 and a second portion in the form of a flat plate 16 in which are removably attached the two flat longitudinal branches 19 of the first part 15 by the screws 17 anchored in threaded holes 20 of the second part 16.
• the second part 16 has a generally rectangular shape preferably (depending on the ribbing of the cast iron on the underside buffer, this shape may be different).
• the second portion 16 of the housing 13 comprises a plate 21 integral with an edge of the second portion perpendicular to it so as to close the end opening of the first portion 15 opposite to that allowing the passage of the beveled end 1 1b of the rod 1 1a of the bolt January 1 and on which plate 21 bears one end of the return member 14, the opposite end portion is housed in an end notch U-shaped of the rod 1 1 a of the bolt 1 1.
• the second portion 16 of the housing 13 is removably attached to four feet 22 which can come from a casting projecting under the upper wall 1a of the buffer. More specifically, the substantially square flat plate of the second portion 16 of the housing 13 comprises four holes 23 made at the four corners of this plate and allowing the passage of four screws 16a, which can be anchored respectively in four threaded holes formed in parts d ends of the four legs 22 of the pad 1.
• the rod 1 1 has the bolt 1 1 has a through recess 24 formed in the vicinity of the central portion of this rod and whose role will be explained below.
• the rotor 10 has, integral with its end 10a opposite the end 10b can be engaged with the key 3, a cam member 25 engaged in the recess 24 of the rod 1 1 has bolt 1 1, which recess 24 is shaped to cooperate with the cam member 25 of the rotor 10 when it is operated by the key 3 to move in translation the rod 1 1 a of the bolt January 1 in the housing 13 in its disengaged position of the striker 12 against the restoring force of the elastic return member 14.
• the cam part 25 of the rotor 10 has its own cam 25a extending perpendicularly to the longitudinal direction of the rod 1 1a of the bolt 1 1 when the latter occupies its engaged position in the keeper 12.
• the rod 1 1a of the bolt January 1 is supported by an inner face 24a of its recess 24 located on the side of the return member 14 on a side face 25b of the cam member 25 and adjacent to the cam 25a when the rod 1 1 has the bolt 1 1 occupies its engaged position in the keeper 12 to thereby constitute a retaining stop of the rod 1 1 a of the bolt January 1 at this position under the action of the return member 14.
• the end portion of the rotor 10 having the cam-shaped end 10a passes through the flat wall of the second portion 16 of the housing 13 as will be seen later so that the cam member 25 can be engaged in the recess 24 of the rod of the bolt January 1 and, therefore, is housed in the housing 13.
• the latch 5 comprises a cylindrical barrel 26 integral with the upper face of the flat plate of the second portion 16 of the housing 13 extending perpendicularly to this face so that the cylindrical shaft 26 extends to a fixed position perpendicular to the wall 1a of the buffer 1 below this wall.
• the rotor 10 extends coaxially in the cylindrical barrel 26 with its smaller cylindrical lower end portion passing through a lower central bore 27 of the cylindrical barrel 26 and the flat wall of the second portion 16 of the casing 13 so as to that the cam member 25 is housed in the recess 24 of the rod of the bolt 1 1.
• the rotor 10 can rotate under the action of the key 3 in the bore 27 of the cylindrical shaft 26 to angularly drive the piece forming a cam 25 between its two positions of withdrawal of the rod 1 1 a of the bolt 1 1 of the keeper 12 and engagement of the rod 1 1 a of the bolt January 1 in this striker.
• the end portion of the cylindrical barrel 26 opposite the second portion 16 of the housing 13 is capped by a cylindrical sleeve 28 integral with this end portion and having a transverse end wall 29 through which is defined the opening opening 4 which comprises a circular central orifice 4a of a diameter slightly greater than the outer diameter of the sleeve 7 of the key 3 and two diametrically opposed grooves 4b opening into the central circular opening 4a.
• the cylindrical sleeve 28 comprises opposite its end wall 29 an annular base 30 having two diametrically opposed holes 31 in which are engaged two cylindrical pins 32, such as for example fluted pins, respectively press-fitted in two corresponding holes 33 of the cylindrical shaft 26 for fixing the cylindrical sleeve 28 to the cylindrical shaft 26 with the transverse end wall 29 resting on the annular end of the cylindrical shaft 26.
• the lock 5 also comprises a plug 34 for closing the opening opening 4.
• the closure cap 34 is in the form of a cylindrical section having two cylindrical end portions 35, 36 separated from one another by a collar 37 slidable in the cylindrical drum 26 , a superior 35 of the parties of cylindrical ends of the closure cap 34 having two diametrically opposite pins 38 engagable with the cylindrical end portion 35 in the central circular hole 4a and the grooves 4b of the cylindrical sleeve 28 to seal the opening opening 4 with the collar 37 bearing under the transverse end wall 29 of the cylindrical sleeve 28.
• a helical compression spring 39 is mounted prestressed between the flange 37 of the closure cap 34 and an internal shoulder 40 of the cylindrical barrel 26 so as to exert a return force of the cap 34 to its closed position of the opening opening 4.
• the plug 34 is made captive, that is to say it can not be removed from the buffer 1.
• the closure cap 34 may be axially guidedly displaced along the larger diameter end portion 10b of the rotor 10 against the restoring force of the spring 39 when the socket 7 of the key 3 is introduced through the opening opening 4. [0050]
• the closure cap 34 has a central orifice through
• cylindrical end portion 10b of the rotor 10 comprises a flattened portion 10d extending along the end portion 10b that can cooperate with a flat portion 41a of the through hole 41 of the closure plug. 34.
• Other forms of key impressions may exist.
• the end portion 10b of the rotor has a second flat 10e of smaller width than that of the flat portion 10d, connected thereto and constituting a polarizer cooperating with a second flat portion 41b of the hole 41 of the cap
• the closure cap 34 can slide axially along the rotor 10 against the restoring force of the spring 39 being secured in rotation to this end portion.
• the end wall 29 of the cylindrical sleeve 28, the upper end of the closure cap 34 and the upper end of the rotor 10 are flush in the same plane located in the plane.
• the cylindrical sleeve 28 is largely housed in a hole 1 d of the wall 1a of the buffer 1.
• the rotor 10 is axially held in the cylindrical drum 26 by the cam member 25 housed in the recess 24 of the bolt January 1 between the bottom wall 18 of the first portion 15 of the housing 13 and the lower end of the cylindrical barrel 26, while being able to rotate a limited angle in this barrel under the action of the key 3.
• the footprint 9 of the sleeve 7 of the key 3 is of complementary shape to that of the part d 10b end of the rotor 10, that is to say in the illustrated example that the cavity 9 has a flat 9a adapted to cooperate with the flat portion 10d of the end portion 10b of the rotor 10 and a second flat of Wider width 9b adapted to cooperate with the flat portion 10e of the end portion 10b of the rotor 10 to together constitute a polarizing means.
• the socket 7 of the key 3 further comprises two diametrically opposed lugs 7a protruding from either side of this socket and shaped respectively conjugate to the two diametrically opposed grooves 4b of the opening opening 4.
• the rotor 10 is engaged in the cylindrical shaft 26 without its cam member 25 so that its cylindrical lower end portion 10a is engaged in the bore 27 of the cylindrical shaft 26 and the piece forming Cam 25 is fixed to the end of the rotor 10 by a central fixing screw, not shown.
• the bolt January 1 and the elastic return member 14 are mounted in the first portion 15 of the housing 13 and the rotor 10 is engaged in the recess 24 of the bolt January 1.
• the first part 15 is then fixed by the fastening screws 17 under the plate of the second part 16 of the casing 13 and the spring 39 is engaged in the cylindrical drum 26.
• the closure cap 34 is disposed above the spring 39 so that the flange 37 of the cap is supported on the upper end turn of this spring.
• the cylindrical sleeve 28 is engaged on the upper end portion of the cylindrical barrel 26 by positioning the opening orifice 4 so that the tenons 38 of the plug 34 are engaged respectively in the two grooves 4b of the cylindrical sleeve 28 which is then attached to the cylindrical shaft 26 by the cylindrical pins 32 passing through the bores 31 of the circular base 30 of the cylindrical sleeve 28 and the bores 33 of the cylindrical shaft 26.
• the assembled assembly of the casings 13, cylindrical barrel 26, closure cap 34 and cylindrical sleeve 38 is engaged under the wall 1a of the buffer 1 so that the cylindrical sleeve 28 is engaged in the bore 1 d of the wall 1a and the housing 13 is fixed via its second portion 16 to the four legs 22 of the buffer 1.
• the part of end 10b of the rotor 10 is coupled to the sleeve 7 of the key 3 which is then rotated about a quarter of a turn to also rotate a quarter turn the plug 34 in the barrel 26 so that the two lugs 7a of the bushing 7 can bear under the end wall 29 of the cylindrical sleeve 28 and are held below it by the restoring force exerted by the spring 39 on the flange 27 of the plug 34, the lugs 7a being thus trapped between the wall 29 and the coll erette 37, holding key 3 in buffer 1.
• the cam member 25 causes by its cam 25a the displacement in guided translation of the rod 1 1 a of the bolt 1 1 in the housing 13 against the return force of the elastic member 14 so as to disengage the beveled end 1 1 a of this rod of the striker 12 of the frame 2.
• the operator can then with the aid of the key 3 lift the buffer 1 to disengage it from the frame 2 by pivoting about the hinge axis A.
• the operator can remove the key 3 from this buffer by turning it a quarter of a turn so as to disengage the two lugs 7a of the key 3 of the grooves 4b of the cylindrical sleeve 28, then bringing the piece back forming a cam 25 of the rotor 10 at its position at which the rod 1 1 has the bolt 1 1 is brought by the elastic return member 14 to its projecting position of the housing 13.
• the operator manually switches the buffer 1 from its upright position.
• tapered portion 11a of bolt rod 11 hits one side of a protruding portion of frame 2 located above striker 12 to cause translational movement.
• the rod 1 1 has the bolt 1 1 in part in the housing 13 against the restoring force of the elastic member 14 and this member remembers the rod 1 1 a of the bolt 1 1 in its engagement position of the beveled end 1 1b in the keeper 12 of the frame 2 to lock the buffer 1 again to this frame.
• the standing position of the buffer 1 the key 3 can be held captive of this buffer and the operator can switch the buffer to its closed position of the frame 1.
• the operator turns the key 3 by a quarter of a turn to cause the angular pivoting of the cam member 25 to its position at which the elastic member 14 can recall the rod bolt 1 1 to its engaged position in the keeper 12 of the frame 2 to lock the buffer 1 to this frame.
• the rotor 10 and the cam member 25 may be replaced by any other drive mechanism housed in the buffer 1 and which, under the action of the key 3, allows the translational movement of the bolt 1 1 between its positions engaged in the keeper 12 and cleared thereof.
• the above described device of the invention uses a lock that allows the automatic locking of the buffer 1 to the frame 2 during the switchover of this buffer to its closed position of the frame 2 without the help of the key to maneuver of this lock while ensuring the anti-fouling function of the access opening to this lock to the closed position of the frame 2 by the buffer 1.
• the advantages of the invention are the ability to quickly close and lock the buffer in the frame and to prohibit the on-site forgetting of foreign bodies, such as a removable plug attached in the opening opening of the buffer and removed from this opening to access the rotor to unlock the frame buffer.

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• Engineering & Computer Science (AREA)
• Environmental & Geological Engineering (AREA)
• Life Sciences & Earth 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)
• Mechanical Engineering (AREA)
• Lock And Its Accessories (AREA)
• Underground Structures, Protecting, Testing And Restoring Foundations (AREA)

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Applications Claiming Priority (2)

Publications (2)

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• 2016
  • 2016-05-24 FR FR1654622A patent/FR3051818B1/fr not_active Expired - Fee Related
• 2017
  • 2017-05-22 EP EP17729185.3A patent/EP3464762B1/de active Active
  • 2017-05-22 CN CN201780032456.8A patent/CN109154167B/zh not_active Expired - Fee Related
  • 2017-05-22 PL PL17729185T patent/PL3464762T3/pl unknown
  • 2017-05-22 SG SG11201810342WA patent/SG11201810342WA/en unknown
  • 2017-05-22 DK DK17729185.3T patent/DK3464762T3/da active
  • 2017-05-22 MY MYPI2018002106A patent/MY192484A/en unknown
  • 2017-05-22 PT PT177291853T patent/PT3464762T/pt unknown
  • 2017-05-22 ES ES17729185T patent/ES2866897T3/es active Active
  • 2017-05-22 WO PCT/FR2017/051256 patent/WO2017203148A1/fr unknown

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