EP0039301B1 - Verankerungsmittel für den Verschluss eines Schachtdeckels - Google Patents

Verankerungsmittel für den Verschluss eines Schachtdeckels Download PDF

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Publication number
EP0039301B1
EP0039301B1 EP19810420060 EP81420060A EP0039301B1 EP 0039301 B1 EP0039301 B1 EP 0039301B1 EP 19810420060 EP19810420060 EP 19810420060 EP 81420060 A EP81420060 A EP 81420060A EP 0039301 B1 EP0039301 B1 EP 0039301B1
Authority
EP
European Patent Office
Prior art keywords
plate
lug
face
cover
preventing rotation
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
Application number
EP19810420060
Other languages
English (en)
French (fr)
Other versions
EP0039301A1 (de
Inventor
Robert Dumortier
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.)
Cessione fidum Societe' Anonyme
Original Assignee
Dumortier Robert
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 FR8009720A external-priority patent/FR2481337A1/fr
Priority claimed from FR8025029A external-priority patent/FR2494746A2/fr
Application filed by Dumortier Robert filed Critical Dumortier Robert
Publication of EP0039301A1 publication Critical patent/EP0039301A1/de
Application granted granted Critical
Publication of EP0039301B1 publication Critical patent/EP0039301B1/de
Expired legal-status Critical Current

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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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/08—Bolts
    • Y10T292/0863—Sliding and rotary
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T292/00—Closure fasteners
    • Y10T292/42—Rigid engaging means

Definitions

  • the invention relates to locking means for a manhole cover locking device according to the preamble of the main claim.
  • manhole covers composed of a removable buffer and a fixed base.
  • Certain locking means use radial fingers, integral with the pad and cooperating, like bayonets of an electric bulb socket, with complementary housings formed in ears of the base.
  • Locking devices are already known with complementary locking means composed of a removable key rotating around a vertical axis, comprising a flat upper plate closing the ear in the locking position, means of connection with the base and means for wedging the radial finger of the tampon.
  • This key which is independent of the other two elements of the gaze, can be lost during handling of the tampon, so that the tampon may not be locked after it has been replaced on the base.
  • being very difficult to remove it sometimes happens that the staff does not put it back in place after lifting the tampon.
  • Another device close to the previous one in which the key is articulated around a horizontal axis integral with the buffer is also known from FR-A-2 272 230.
  • the object of the present invention is to provide additional captive blocking means ensuring effective blocking of the tampon, whatever the stresses which request it, and which cannot be unblocked without human intervention.
  • these complementary blocking means consist of a pallet which, articulated on a horizontal axis extending the radical locking finger, is mounted in a captive manner on its axis and comprises, at least the one of its ends, a bearing capable of coming to bear against a wall opposite the ear to oppose the rotation of the pad relative to the base in the unlocking direction.
  • This pallet articulated laterally on the pad, can occupy, on the one hand, a vertical position in which it allows the pad to pivot relative to the base to ensure either its locking or its unlocking and, on the other hand, a horizontal position in which it opposes any rotation of this pad and therefore prevents his radical finger from escaping from the ear beak, which prohibits its accidental lifting. It should be noted that the passage of any vehicle on the pallet tends to keep it in its horizontal locking position, which excludes that it lifts.
  • the substantially horizontal face of the internal step which is fitted with the ear comprises, at least locally, a recess defining, with the underside of the free end of the pallet, a passage for a hook formed at the end of a removable lever, while the pallet is provided, in the back of its articulated part, with a recess forming a transverse abutment face capable of cooperating, in the opening phase of the pallet, with a notch formed at the end of the aforementioned lever, opposite to its hook-shaped part, said lever comprising, also on the back of its part provided with the notch, a cam-shaped profile able to take support on the edge of the ear opposite to that of the step and, at its other end, a second hook on the rounded back constituting the cam is suitable, in the pivoting phase for locking the pad, and when the hook cooperates with the finger radial, coming into contact with the corresponding face ante of the step of the ear.
  • 2 designates the base and 3 the buffer for a manhole whose locking means on the aforementioned base consist of at least one, and preferably two fingers 4 projecting radially from its periphery and each capable to cooperate with a protruding spout 5 inside the corresponding ear 6 of the base.
  • the base has an inner rib 11 constituting a support for the pad 3, with or without the interposition of a seal, not shown.
  • the device for locking the pad 3 on the base 2 a device constituted by the fingers 4 and the beaks 5 of the ears 6, is completed by complementary means constituted by a pallet 7.
  • This pallet is articulated around 'a horizontal axis 8 projecting laterally in the extension of the corresponding locking finger 4.
  • each axis locally has a flat 8a whose plane containing it tangents the bottom of a groove 9 formed between the axis proper and the finger 4.
  • the pallet 7 is articulated on the axis 8 by one of its ends which comprises, for this purpose, a portion in the form of a bearing 12 in which is formed a bore 13 of the same diameter as that of the axis 8.
  • This bore comprises a crescent of material 14 (visible in FIGS. 3 and 5) which, projecting into the part of the bore which is posterior to it when the pallet is mounted on the axis 8 of the manhole, gives locally to this bore 13 has a transverse profile equal to the transverse profile of the shaft 8.
  • This crescent 14 of material therefore constitutes a kind of permanent key which, as shown in Figures 7 and 8 and by coming to cooperate with the front edge of the groove 9, prohibits any disengagement of the locking pallet 7 from its axis 8, and thus makes it captive as long as it occupies a position different from its mounting position.
  • this is chosen so as not to correspond to the positions of use of this pallet, respectively vertical gripping shown in FIG. 7, and horizontal blocking shown in FIG. 8.
  • the pallet is permanently linked to the buffer 3 and cannot be separated from it during the manipulations of the latter outside of the base 2.
  • this pallet 7 also includes, near its other end, a transverse lower rib 15 offset from its free end.
  • this blocking pallet When this blocking pallet is placed on the pad 3 and occupies the vertical position shown in FIG. 7, its rib 15 constitutes a gripping member and therefore makes it possible to lift the pad to bring it above the opening of the base 2 and orient it so that the fingers 4 are substantially above the ears 6 of this base.
  • the pad 3 When the pad 3 is in this position, it is lowered into the opening of the base 2, while its fingers 4 penetrate the ears 6, as shown in FIG. 7.
  • to lock the gaze it it suffices to rotate it about a vertical axis in the direction of the arrow 18 in FIG. 7, until its fingers 4 penetrate under the beaks 5 projecting into the ear 6. At this time, the blocking pallet 7 can be lowered in the ear 6.
  • each of the fingers 4 has, at its upper part, a face 4a which is sloping transversely and gives it the general shape of a wedge.
  • This face is able to cooperate with a complementary sloping face 5a formed under the spout 5 of the ear 6.
  • the pallet 7 is provided, at its free end, with a part in the shape of a wedge to cooperate with the corresponding internal face of the ear 6 to drive the radial finger 4 under the spout 5.
  • the pallet is provided, at its free end, with a nose 22 having faces sloping side 22a and a width 1 decreasing from the upper part of the pallet to the lower end of the rib 15.
  • This nose is intended to cooperate with the faces 23 of a housing of dimension and complementary shapes opening into the face internal 24 of the wall 19 of the ear 6.
  • the wall 19 of the ear 6 has a support step 28 for the free end of the pallet 7.
  • This step is extended by a rib 29 constituting the extension of the peripheral wall of the ear 6.
  • the internal face 29a of this rib delimits a housing 30 with the end face of the pallet 7 when the latter is in the horizontal position.
  • This housing 30 makes it possible to introduce the flat of a pickaxe to lift the pallet when it is desired to unlock the locking device.
  • the pallet 7 has on its back and above its bearing portion 12, a longitudinal groove 32 which, when said pallet 7 is in the vertical position after being lifted by the flat of the pick, defines a vertical housing 33 with the internal face of the wall 20 of this ear 6.
  • This housing 33 is used to introduce the pick of the pick which, due to its wedge shape, communicates with the pallet and to the assembly of the pad 3 a rotational movement in the direction of the arrow 21 (FIG. 8) favoring the unlocking of the pad 3.
  • the free end of the pallet 7, that is to say the part carrying the rib 15, is wider than its part in the form of a bearing 12 articulated on the axis 8 by a quantity d (FIG. 10) corresponding substantially to the thickness of the spout 5 of the ear 6.
  • d (FIG. 10) corresponding substantially to the thickness of the spout 5 of the ear 6.
  • this blocking pallet 7 of simple design, and which can be obtained directly from the foundry in the same way as the ear 6 of the base 2, the axis 8 and the corresponding finger 4 of the pad 2, does not cannot be lifted accidentally and therefore perfectly performs its function of blocking the means for locking the buffer 3 on the base 2, while constituting a gripping and manipulation member for this gaze.
  • this blocking pallet 7 because of its captivity with respect to the tampon, it obliges the personnel to block the locking of the tampon when the latter has been put in place on the base 2.
  • the step 28 comprises, in its substantially horizontal face, a knockout 40, while, as shown in FIG. 12, the pallet 7 comprises, on the back of its part comprising the bore 13, a recess 42 forming, with the upper face 42a of this pallet, a transverse abutment face 43.
  • these knockouts and recesses are intended to cooperate with various parts of the removable key 44 to facilitate blocking operations and unlocking, but also locking and unlocking of the buffer relative to the base 2.
  • the key 44 shown in Figure 13, has at its lower part a hook-shaped part 45 which is opposite to a notch 46.
  • the part of the key comprising this notch is provided, on its back, with a profile 47 cam-shaped.
  • the key 44 includes another hook 48 whose back 49 is also rounded to form a cam.
  • the lever 44 When pallet 7 has been lifted, and if is still very difficult to rotate it manually, the lever 44 is used by its other end. Under these conditions, its hook part 45 is engaged, as shown in FIG. 15, on the free end of the pallet 7, then the lever 44 is brought against the upper face of this pallet 7, so that its notch 46 comes into contact with the abutment face 43 of the pallet 7. The lever 44 is then pivoted in the direction of the arrow 53 in FIG. 15. As soon as its cam-shaped part 47 meets the inner edge of the wall 20 of the ear 6 and rests on this edge, the pallet 7, and consequently the gaze 3, are subjected to a displacement in the direction of the arrow 54 of FIG. 15, displacement causing the disengagement of the radial finger 4 from below of the locking spout 5. As soon as the radial finger 4 is completely disengaged from the spout 5, the lever 44 is withdrawn. The tampon can then be lifted by the sole use of the plates 7, the ribs 15 of which constitute a gripping member.
  • Figure 16 shows that to facilitate the locking of the buffer 3 on the manhole 2, despite the presence of powdery deposits between the faces opposite these two elements, the hook 48 of the lever 44 can again be used. Under these conditions, the hook 48 is arranged so as to partially envelop the corresponding radial finger 4 and to come into contact, by its back 49 forming a cam, against the substantially horizontal face 24 of the step 28. It is easy to understand that by making pivot the lever 44 in the direction of arrow 55 in FIG.
  • the hook 48 communicates to the radial finger 4 and to the buffer 3 a movement in the direction of arrow 56, that is to say say a movement tending to cause the locking of the buffer 3 by engagement of the finger 4 under the locking spout 5, it suffices to lower the corresponding pallet 7 to bring it into the position shown in FIG. 14.

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  • Engineering & Computer Science (AREA)
  • Civil Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Mining & Mineral Resources (AREA)
  • Paleontology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
  • Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
  • Mechanical Means For Catching Fish (AREA)
  • Sewage (AREA)
  • Pivots And Pivotal Connections (AREA)

Claims (9)

1. Vorrichtung zum Sperren von Verriegelungsvorrichtungen von Straßen-Einstiegschächten mit einer Bodenplatte (2), die mindestens eine radiale Öse (6) besitzt, mit einem abnehmbaren Deckel (3), der einstückig mit wenigstens einem radialen Zapfen (4) verbunden ist, der in die Öse (6) eindringen und mit einem Vorsprung (5) an derselben zusammenwirken kann, um sein Abheben zu verhindern, mit komplementären Sperrmitteln, die beim Verdrehen in die Öse (6) eindringen, mit einer oberen, ebenen Platte, die die Öse in der Sperrstellung verschließt, dadurch gekennzeichnet, daß die komplementären Sperrmittel von einer Palette (7) gebildet sind, die auf einer horizontalen Achse (8), die den radialen Verriegelungszapfen (4) verlängert, verschwenkbar gelagert und auf ihrer Achse (8) unverlierbar montiert ist und wenigstens an einem ihrer Enden eine Reichweite aufweist, die es ihr ermöglicht, sich gegenüber der Öse (6) gegen eine Wand abzustützen, um einer Verdrehung des Deckels (3) in bezug auf die Bodenplatte (2) im Sinne einer Entriegelung entgegenzuwirken.
2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Palette (7) an einem ihrer Enden gelenkig gelagert ist und im Bereich ihres anderen Endes eine untere, querverlaufende Bogenrippe (15) aufweist, die sich gegen die korrespondierende innere Fläche der Öse (6) abstützen kann und ein Greiforgan für das Entfernen des Deckels (3) bildet.
3. Vorrichtung nach Anspruch 2, dadurch gekennzeichnet, daß der radiale Zapfen (4) eine in der Querrichtung abfallende Oberfläche (4a) aufweist, die mit einer geneigten Fläche (5a) zusammenwirkt, die unterhalb des Vorsprungs (5) der Öse (6) vorgesehen ist, wogegen die Palette (7) an ihrem freien Ende einen keilförmigen Teil (22) aufweist, der mit dem dem Vorsprung (5) gegenüberliegenden Teil der Öse (6) zusammenwirkt, um den radialen Zapfen (4) unter den Vorsprung (5) zu treiben.
4. Vorrichtung nach Anspruch 3, dadurch gekennzeichnet, daß die Palette an ihrem freien Ende eine Stütznase (22) trägt, die seitlich geneigte Flächen (22a) und eine von der oberen Fläche der Palette (7) zum unteren Ende der Bogenrippe (15) abnehmende Breite aufweist, wogegen die Wand (19) der Öse, die mit ihrer gegenüberliegenden Fläche in die Öffnung mündet, eine Aufnahme (23) trägt, deren Querschnitt und Formen zu denen der vorgenannten Nase komplementär sind und eine Auflage für die Flächen der Nase (22) bilden.
5. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Öse (6) eine aus der dem Vorsprung (5) gegenüberliegenden Wand hervortretende Stufe (28) für das freie Ende der Palette (7) aufweist, welche Stufe durch eine Rippe (29) verlängert ist, deren innere Fläche (29a) mit der Anschlagfläche der Palette (7), wenn diese sich in der Sperrlage befindet, einen Hohlraum (3a) begrenzt, der das Einbringen eines sein Öffnen ermöglichenden Werkzeuges (44) gestattet.
6. Vorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß der Teil der Palette (7), der die untere Rippe (15) trägt, breiter ist als der Gelenkteil auf der Achse (8), die den radialen Zapfen (4) des Deckels (3) um einen Betrag (d) verlängert, der im wesentlichen der Dicke des Vorsprungs (5) an der Öse (6) entspricht, derart, daß die innenseitliche konkave Fläche (7a) der Palette sehr nahe an die Umfangsfläche (3a) des Deckels (3) herankommt, wenn diese Palette (7) sich in Sperrlage befindet.
7. Vorrichtung nach Anspruch 1 und einem der Ansprüche 2 bis 6, dadurch gekennzeichnet, daß die Achse (8), die den radialen Zapfen (4) des Deckels (3) verlängert, eine Hohlkehle (9) aufweist, die von einer Ebene tangiert wird, die die Fläche einer Abflachung (8a) enthält, die auf einem Abschnitt ihres Umfanges, der dem der Bohrung (13) in der Palette (7) entspricht, angebracht ist, wogegen vorgenannte Bohrung (13) ihrerseits einen Vorsprung (14) aufweist, der seinerseits die Hohlkehle (9) umgibt und sich derart verdickt, daß er einen Haltekeil für die Palette (7) auf der Achse (8) bildet.
8. Vorrichtung nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, daß die Palette (7) auf dem Rücken ihres auf der Achse (8) angelenkten Teiles, die den radialen Zapfen (4) des Deckels (3) verlängert, eine Längsnut (32) trägt, die, sobald die Palette in ihre vertikale Freigabeposition gebracht ist, mit der Wand (20) der Öse (6), aus der der Vorsprung (5) herausragt, eine vertikale Ausnehmung (33) für die Einführung der Spitze einer Hacke begrenzt.
9. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die im wesentlichen horizontale Fläche der Stufe (28), mit der die Öse (6) versehen ist, wenigstens eine örtlich begrenzte Vertiefung (40) aufweist, die mit der Innenseite des freien Endes der Palette (7) einen Durchgang für einen Haken (45) begrenzt, der am Ende eines abnehmbaren Hebels (44) angebracht ist, wogegen die Palette (7) auf ihrer angelenkten Rückseite mit einer Stufe (42) versehen ist, die eine querliegende Anschlagfläche bildet, die in der Offnungsphase der Palette (7) mit einer Kerbe (46) zusammenwirken kann, die am Ende des vorgenannten Hebels (44), seinem hakenförmigen Teil gegenüberliegend, angebracht ist, welcher Hebel (44) auf seinem mit der Kerbe (46) versehenen Rückenteil auch ein Profil (47) in Form einer Nocke aufweist, die sich auf dem Rand (20) der Öse (6), der gegenüber der Stufe (28) liegt, abstützen kann, und am anderen Ende einen zweiten Haken (48) trägt, dessen gerundeter Rücken in der Phase des Verriegelungsschwenks des Deckels (3) eine Nocke (49) bildet, und, sobald der Haken (48) mit dem radialen Zapfen (4) zusammenwirkt, in Kontakt mit der korrespondierenden Fläche der Stufe (28) der Öse (6) kommt.
EP19810420060 1980-04-25 1981-04-21 Verankerungsmittel für den Verschluss eines Schachtdeckels Expired EP0039301B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR8009720 1980-04-25
FR8009720A FR2481337A1 (fr) 1980-04-25 1980-04-25 Moyens de blocage pour dispositif de verrouillage de tampon de regard de chaussee
FR8025029 1980-11-24
FR8025029A FR2494746A2 (fr) 1980-11-24 1980-11-24 Moyens de blocage pour dispositif de verrouillage de tampon de regard de chaussee

Publications (2)

Publication Number Publication Date
EP0039301A1 EP0039301A1 (de) 1981-11-04
EP0039301B1 true EP0039301B1 (de) 1983-07-06

Family

ID=26221755

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810420060 Expired EP0039301B1 (de) 1980-04-25 1981-04-21 Verankerungsmittel für den Verschluss eines Schachtdeckels

Country Status (6)

Country Link
US (1) US4364689A (de)
EP (1) EP0039301B1 (de)
AT (1) ATE4063T1 (de)
CA (1) CA1163487A (de)
DE (1) DE3160556D1 (de)
OA (1) OA06799A (de)

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FR2700347B1 (fr) * 1992-12-24 1995-02-24 Katan Jean Jacques Dispositif de verrouillage pour tampons de chaussée normalisés.
NL9300304A (nl) * 1993-02-17 1994-09-16 Agritrans Bv Koppelingsas.
US6035581A (en) * 1998-09-09 2000-03-14 Archie Mccoy (Hamilton) Ltd. Road surface aperture frames and covers
USD428159S (en) * 1999-02-11 2000-07-11 Archie McCoy Ltd. Road surface aperture frame
GB0220165D0 (en) * 2002-08-30 2002-10-09 Saint Gobain Pipelines Plc A drainage assembly
EP1606464A1 (de) * 2003-03-25 2005-12-21 Aco Severin Ahlmann Gmbh & Co. Kg Abdeckungsanordnug
US20050145249A1 (en) * 2003-12-31 2005-07-07 Solyntjes Alan J. Personal respiratory protection device that has a permanent or semi-permanent bayonet connection
FR2887268B1 (fr) * 2005-06-15 2007-08-10 Norinco Sa Dispositif de controle de la position de verrouillage ou de deverrouillage d'un verrou permettant de bloquer a un cadre un couvercle d'obturation de ce cadre
US7128495B1 (en) * 2005-10-19 2006-10-31 Lill Clifford F Curb box cover assembly
CA2661755A1 (en) * 2006-08-25 2008-02-28 Gmi Composites Inc. Reinforced composite manhole cover assembly and components thereof
FR2950085B1 (fr) * 2009-09-16 2011-12-16 Saint Gobain Pont A Mousson Attache de fixation pour un dispositif de voirie, ensemble, dispositif de voirie et procede correspondants
PT105580B (pt) * 2011-03-23 2013-01-02 Fucoli Somepal Fundicao De Ferro S A Dispositivo anti-roubo de tampas de câmaras de visita e respectivo método de fixação
US8727659B1 (en) * 2013-03-08 2014-05-20 EJ USA, Inc. Manhole cover with insert
CA3082005A1 (en) * 2020-06-05 2021-12-05 Canplas Industries Ltd. A latch assembly and a method of latching a first element to a second element

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Publication number Priority date Publication date Assignee Title
US1016081A (en) * 1911-04-27 1912-01-30 Richard J Mcnulty Manhole and catch-basin cover.
GB191225746A (en) * 1912-11-09 1913-11-10 Frederick James Bostel Improvements relating to the Opening and Closing of Man-hole Doors for Drainage and Sewerage, applicable also to other Pavement Doors.
US1165804A (en) * 1915-03-25 1915-12-28 Quigley Furnace And Foundry Co Manhole-cover fastening.
US1375222A (en) * 1918-01-16 1921-04-19 William F J Lutz Drain-fitting
US1877996A (en) * 1930-08-29 1932-09-20 Connor B Shanley Manhode cove
US1988360A (en) * 1932-10-28 1935-01-15 Lenape Hydraulic Pressing & Fo Manhole frame cover
US1962881A (en) * 1932-11-04 1934-06-12 Connor B Shanley Manhole cover and anchoring means therefor
US3130651A (en) * 1960-08-23 1964-04-28 Neenah Foundry Company Mounting for hinged covers
DE1273442B (de) * 1963-04-11 1968-07-18 Passavant Werke Drehriegelverschluss fuer einen in einem Aufsatzrahmen gelagerten Schachtdeckel od. dgl.
FR2268117B1 (de) * 1974-04-19 1976-10-08 Pont A Mousson
FR2272230B1 (de) * 1974-05-22 1978-08-04 Pont A Mousson
FR2277942A1 (fr) * 1974-07-10 1976-02-06 Pont A Mousson Dispositif de blocage effectif pour tampon de regard de chaussee
BE861949A (fr) * 1977-01-05 1978-04-14 Dumortier Robert Dispositif de verrouillage pour tampon de regard de chaussee ou autres
FR2424372A1 (fr) * 1978-04-24 1979-11-23 Dumortier Robert Dispositif de verrouillage pour regards ou grilles de chaussee ou autre
FR2457932A1 (fr) * 1979-06-01 1980-12-26 Pont A Mousson Element de voirie, notamment regard ou avaloir de chaussee

Also Published As

Publication number Publication date
DE3160556D1 (en) 1983-08-11
OA06799A (fr) 1982-12-31
ATE4063T1 (de) 1983-07-15
EP0039301A1 (de) 1981-11-04
CA1163487A (fr) 1984-03-13
US4364689A (en) 1982-12-21

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