Classifications

• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
  • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
  • E21F1/08—Ventilation arrangements in connection with air ducts, e.g. arrangements for mounting ventilators
• • E—FIXED CONSTRUCTIONS
  • E21—EARTH OR ROCK DRILLING; MINING
  • E21F—SAFETY DEVICES, TRANSPORT, FILLING-UP, RESCUE, VENTILATION, OR DRAINING IN OR OF MINES OR TUNNELS
  • E21F1/00—Ventilation of mines or tunnels; Distribution of ventilating currents
  • E21F1/003—Ventilation of traffic tunnels
• • E—FIXED CONSTRUCTIONS
  • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
  • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
  • E06B9/00—Screening or protective devices for wall or similar openings, with or without operating or securing mechanisms; Closures of similar construction
  • E06B2009/007—Flood panels
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
  • F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
  • F24F13/02—Ducting arrangements

Definitions

• This invention relates to blocking flooding water from entering underground ventilation passages.
• Underground storm waters entering and flooding underground tunnels and chambers through ventilation ducts connecting the underground chambers or tunnels to air at ground surface affect without limitation, underground transportation tunnels for road vehicles, trains, and subways, and underground chambers, such as associated with a complex of connecting tunnels and shafts, for example as used for such things as underground hydroelectric-power plants, or with underground utilities which require ventilation, such as underground transformer rooms.
• Ventilation ducts or shafts are incorporated into subway systems near stations to exhaust stale pushed air as the train nears a station and to pull in fresh outside air as a train leaves a station, Also reducing the "piston effect" of air being forced through the tunnels at high speeds by moving trains.
• a ventilation duct communicates from an underground tunnel and terminates in a ventilation shaft structure below grade level that opens to the atmosphere at grade level such as a sidewalk where the opening is covered by a subway grating.
• Subways have systems for handling water. When it rains, water runs down stairwells, onto platforms and thence onto tracks, and some gets in the ventilation systems through the surface gratings.
• Drains beneath the tracks pipe water to underground sumps in pump rooms next to the subway tracks. Pumps pull the water up to pressure relief manholes open to the atmosphere at street level; from there the water drains under gravity flow into city storm sewers.
• the problem is that in heavy rains, storm sewers are overwhelmed and flush water back into the streets, flooding the streets with water inundates sidewalk and pours down through subway gratings into the ventilation system thence into the tunnels and onto the tracks.
• the pumping system can only return water to the flooded street; from there the water reenters the flood pool pouring into the ventilation system, defeating the pumping system as a means of controlling subway flooding.
• the problem is especially acute in cities like New York and Lower Manhattan, which is low-lying, vulnerable to storm surges and dotted with grade-level gratings, stairwells and other points of entry for running water into the subways.
• FIG. 1 is an isometric view of a quadrilateral (four sided) support
• FIG. 2 is a top plan view of the quadrilateral embodiment of FIG. 1.
• FIG. 2A is a cross section view of the quadrilateral embodiment of
• FIG. 1 taken along the lines 2A-2A of FIG. 2.
• FIG. 3 is an isometric view of the panel assembly of FIG.5 received in the quadrilateral support of FIGS. 1, 2 and 2 A viewed in this perspective from a left side.
• FIG. 4 is an isometric view of the panel assembly of FIG. 5 received in the quadrilateral support of FIGS. 1, 2 and 2 A rotated 180 degrees from the view of FIG. 3, that is, it is a view of the opposite side of FIG.
• FIG. 5 is an isometric top view of a liftingly removable panel assembly with panels in lowered position.
• FIG. 6 is an enlargement of the portion of FIG. 5 shown in dashed lines indicated by the reference numeral 6.
• FIG. 7 is an enlargement of the portion of FIG. 5 shown in dashed lines indicated by the reference numeral 7.
• FIG. 8 is an enlargement of the portion of FIG. 5 shown in dashed lines indicated by the reference numeral 8.
• FIG. 9 is an alterative embodiment to FIG. 6.
• FIG. 10 is an alternative embodiment to FIG. 7.
• FIG. 11 is a frontal graphic showing the panels of FIG. 5 in lowered position in place in the support of FIG. 1
• FIG. 12A is an isometric view of the top side of an embodiment of a panel on the right side of the embodiment of FIG. 5, from the same perspective as in FIG. 5.
• FIG. 12B is an isometric view of the bottom side of the embodiment of the panel of FIG. 10A.
• FIG. 13 A is an isometric view of the top side of an embodiment of a panel on the left side of the embodiment of FIG. 5, from the same perspective of the panel as in FIG. 5.
• FIG. 13B is an isometric view of the bottom side of the embodiment of a panel of FIG. 13 A.
• FIG. 14 is an isometric view of the embodiment of FIGS. 3 and 5
• FIG. 14A is an enlarged view of the bottom part of FIG. 14.
• FIG. 15 is a perspective bottom view of the embodiment of FIGS. 3 and 5 showing lift arms with stays engaged.
• FIG. 16 is a rear view of the stay and lift arm of the embodiment of
• FIG. 17 is a shadow view of the arrangement of lift arm and stay of
• FIG. 18 is a perspective bottom view of the embodiment of FIGS. 3 and 5 showing the lift arms with the stays released.
• FIG. 19 is a top plan view of the embodiment of FIG. 4.
• FIG. 19A is a cross sectional view of the embodiment of FIG. 19 taken along the line 19A-19A of FIG. 19 showing the lift arms with the stays engaged.
• FIG. 20 is a top plan view of the embodiment of FIG. 19 showing the panels partially raised and the lift arms with stays released.
• FIG. 20A is a cross sectional view of the embodiment of FIG. 20 taken along the line 20A-20A of FIG. 20 showing the lift arms with the stays released.
• FIG. 21 is a top plan view of the embodiment of FIG. 19 showing the panels completely raised and the lift arms relaxed after deployment completing rotation of the panels to home position.
• FIG. 21 A is a cross sectional view of the embodiment of FIG. 19 taken along the line 21 A-21 A of FIG. 21 showing the panels completely raised and the lift arms relaxed after deployment completing rotation of the panels to home position.
• FIG. 22 is a top plan view of variations of the panel assembly of FIG. 5 and the cradle support of FIG. 1 (panels shown raised in home position).
• FIG. 22A is a cross section viewed along the line 22A-22A of FIG. 22 showing a variant of the end of the beam portion of the panel assembly of FIG. 5.
• FIG. 23 Is a top plan view of variations of the panel assembly of FIG.
• FIG. 23 A is a cross section viewed along the line 23A-23A of FIG. 23 showing a variant of the end of the beam portion of the panel assembly of FIG. 5.
• FIG. 24 is a perspective of the variant depicted in cross section in FIG.
• FIG. 25 is a front elevation view of a cradle variant of the support of the embodiment of FIGS. 1-4.
• FIG. 26 is a perspective view of the cradle variant depicted in FIG. 23.
• FIG. 27 is a side elevation view of the cradle variant depicted in FIG.
• FIG. 28 is a top plan view of the cradle variant depicted in FIG. 23.
• FIG. 29 a cutaway isometric view of the panel assembly variant of
• FIG. 5 showing the cradle support variant of FIGS. 25-28 supporting a truncation of the variant assembly of FIG. 5.
• FIG. 30 is a top plan view showing the variant of FIGS 23A and 24 in place in the cradle variant support of FIGS. 25-28.
• FIG. 31 is a perspective bottom view of an embodiment with some components removed showing the position of the variant panel assembly of FIG. 5 as it is lowered into place into the cradle of FIGS.
• FIG. 32 is a front elevation of a lower connector plate for the variant assembly of FIG. 5.
• FIG. 33 is a side elevation view of the connector plate of FIG. 32.
• FIG. 34 is a perspective view of the connector plate of FIG. 32.
• FIG. 35 is a front elevation of an anchor bar for the variant assembly of
• FIG. 36 is a side elevation view of the anchor bar of FIG. 35.
• FIG. 37 is a perspective view of the anchor bar of FIG. 35.
• FIG. 38 is a perspective bottom view with some components removed showing the position of the variant assembly of FIG. 5 in place in the cradle of FIGS. 25-28 and anchored in place in the lower anchorage support depicted in FIGS. 35-37.
• FIG. 39 is a top plan view of the connector plate of FIGS 32-34
• FIG. 40 is a top plan view of the panel of FIG. 10A.
• FIG. 41 is a cross sectional view of the panel of FIG. 40 taken along the line 40-40 of FIG. 40.
• FIG. 42 is an enlargement of the area indicated by "42" in FIG. 40.
• FIG. 43 is a side elevational view of the panel of FIG. 40 showing the position of a plug assembly by dashed lines in raised and partially lowered positions and in solid lines in fully lowered position.
• FIG. 44 is an isomeric view of a plug assembly part of the panel of FIG.
• FIG. 45 is a top plan view of the plug assembly of FIG. 44.
• FIG. 45 A is a cross section of the plug assembly of FIG. 44 taken along the line 45A-45A of FIG. 45.
• FIG. 45B is a top plan and side view of a top plate component of the plug assembly of FIG. 44 better seen in the cross section view of FIG.
• FIG. 45C is a top plan and side view of a bottom plate component of the plug assembly of FIG. 44 better seen in the cross section view of FIG. 45A.
• FIG. 45D is a top plan and side view of a concave sealing gasket of the plug assembly of FIG. 44 better seen in the cross section view of FIG. 45A.
• FIG. 46 is a top plan and side elevational view of a plug arm of the plug assembly of FIG. 44 also seen in the top plan view of FIG. 345 and the cross sectional view of FIG. 45 A.
• FIG. 47 is a cross sectional view of a variation of a plug assembly in place on a panel.
• FIG. 48 is a cross sectional view of the plug arm portion of the plug assembly of FIG. 47.
• FIGS. 49 A, 49B and 49C are respectively side, frontal and perspective views of a tool for manual raising of components of embodiments of the invention.
• FIG. 50 is a top plan view of a single panel assembly received in a quadrilateral support showing the panel deployed in a passage closed position.
• FIG. 50A is a cross sectional view of the embodiment of FIG. 40 taken along the line 50A-50A of FIG. 50.
• FIG. 51 is a top plan view of a single panel assembly received in a quadrilateral support showing the panel completely raised to home position
• FIG. 51 A is a cross sectional view of the embodiment of FIG. 51 taken along the line 51 A-51 A of FIG. 51.
• apparatus for installation in a ventilation shaft already fluidly communicating between an atmospheric opening and an underground ventilation duct allows the ventilation when there is no treat of flooding and on threat of flooding is manually operable to close ventilation from the atmospheric opening and prevent downward flow into the underground ventilation duct of surface water entering the atmospheric opening.
• perpendicular means substantially at a right angle to a reference to a degree that if not absolutely a right angle will not materially adversely affect the arrangement and function of the element described as perpendicular.
• vertical or “vertically” include but are not limited to literal vertical and generally mean oriented up and down with respect to the earth's horizon to a degree that if not absolutely vertical will not materially adversely affect the function of the element described as vertical.
• horizontal or “horizontally” include but are not limited to literal horizontal and generally mean not out of level with respect to the earth's horizon to a degree that will materially adversely affect the function of the element described as horizontal.
• the first mentioned component is identified by a given reference numeral
• the second such component is the same reference number marked with an apostrophe
• panel handle 259 identifies a first mentioned component
• the second such like component is identified as “panel handle 259' ".
• the embodied concepts are described in reference to a specific ventilation environment.
• the exemplary application is for a subway system.
• the atmospheric opening through which flooding waters enter has a rectilinear shape, as for grating covered grade level sidewalk openings for subway ventilation systems, which at least in New York City typically are rectangular.
• the detailed descriptions of specific embodiments relate to a rectilinear shape and for a particular environment, the invention does not require that the opening be rectilinear or that embodiments of the invention conform to a rectilinear shape or that the atmospheric opening be at grade level.
• the elements of the invention can be configured to fit within downwardly vertically projected dimensions of any ventilation shaft surface opening serving any underground tunnel, chamber, room or other underground structure, whether rectilinear, circular or oval or some other shape.
• the passage closing position is one in which the panel or panels of the embodiments are horizontal.
• the concept of the invention is not limited to this disposition. Restrains or stops for stopping panel lowering may be positioned to stop the downward travel above horizontal and still close a ventilation passage.
• the described embodiments are non-limiting illustrations of examples in which the concepts of the invention may be implemented.
• the exemplary embodiments of the invention comprise a ventilation shaft manual closure assembly.
• Support for the exemplary assembly embodiment includes opposed lateral sidewalls for arrangement in a vertical ventilation shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening of the shaft.
• the atmospheric opening may be cylindrical and the support cylindrical.
• the atmospheric opening may be rectilinear and the support quadrilateral. As mentioned, in the exemplary embodiments, the atmospheric opening is rectilinear.
• the support inclusive of the lateral sidewalls is sized to internally fit in the vertical shaft between the ventilation duct and the atmospheric opening.
• the support has horizontal flanges transverse to the sidewalls for projection across a top of the shaft to hang the support in the shaft.
• the support defines a passage between top and bottom openings of the support for fluid communication of the ventilation duct up through the support to the atmospheric opening.
• one or more downwardly rotatable panels may be used, mounted in an upright home position not obstructing the ventilation passage that fluidly communicates the underground ventilation duct with the atmospheric opening of the ventilation shaft, to allow ventilation as usual when there is no flooding threat.
• a single panel is mounted in the home position to a side of such a passage to alone gravitationally fall from home position to a passage closing position across the entirety of the passage to protect the underground ventilation duct from flooding.
• a pair of panels is mounted on opposite sides of the passage, to gravitationally fall from home position down toward each other to passage closing positions to combine to close the passage.
• a pair of panels is mounted centrally in the passage for rotation of the panels in directions opposite each other from the home position to a lower passage closing position.
• the manual closure assembly comprises one or more panels having proximal and distal ends, a top side and a bottom side.
• the proximal end connects with a horizontal hinge having an axis perpendicular to the opposed lateral sidewalls for manual rotation of a panel upwardly to an upright home position not obstructing the passage and rotation from the home position downwardly solely by gravitational impetus of its own weight to reach a lower passage closing position.
• the one or more panels have a profile that closes the passage when each panel gravitationally rotates to the passage closing position.
• a panel holder for holding each the panel in the upright home position comprises a moveable member carried either by a the panel or by the suspension member below the suspension member, and a non- movable member carried by the other of the panel or the suspension member not carrying the moveable member, the movable member capturing and holding the nonmoving member when the panel is rotated upwardly to the home position.
• the embodiment further comprises a panel releaser for the panel holder comprising linkage connected to the moveable or non-moveable panel holder member carried by the suspension member, the linkage being vertically movable relative to the suspension member to translate the moveable or nonmovable member to cause it to release the panel from the upright home position and allow the panel to gravitationally rotationally fall to the lower passage closing position.
• the nonmoveable member of the panel holder comprises a latch catch and the moveable member of the panel holder comprises a latch engageable with the latch catch.
• At least one restraint limits the downward rotation of each panel to the lower passage closing position.
• the restraint may be one or more foldable or flexible members anchored at one end to an upper portion of a suspension member (next mentioned) and fastened at the other end to the topside of a panel, or it may comprise one or more stops that do not obstruct the passage and that are located within and connected to the support proximate the bottom opening.
• adjacent sidewalls include a base having rounded corners with a first radius of curvature and in which the distal portions of the panels have rounded corners with a radius of curvature substantially the same as the first radius of curvature of the sidewall corners they sweep when rotating to the passage closing position.
• the panels include seals for sealing the passage in the passage closing position.
• means are provided for manually rotating the panels to home position, including a panel handle on the top side of the one of more panels for manually rotationally raising the one or more the panels from the passage closing position toward the home position, and a lift arm for each panel, each lift arm having a proximal end pivotally connected by pivot pin to the bottom side of a panel on a pivotation axis parallel to the hinge axis and a distal end optionally comprising a terminal round, suitably a wheel.
• Each lift arm has a dimension allowing it to contact the terminal round with one of the opposed lateral sidewalls when the distal end is pivoted upward inside the sidewall for exertion of lateral force onto the connected panel being raised with the panel handle to complete rotation of the panel into the home position.
• the lift arms are spring biased to force the distal ends rotationally outwardly and upwardly.
• a spring is centrally coiled around the lift arm pivot pin. The spring terminates on opposite first and second ends and has a straight portion comprising a proximal shank and a distal portion bent at a right angle to the shank. The distal portion of the first end extends engagingly across an underside of the lift arm proximate the pivot pin and the distal portion of the second end extends engagingly across a topside of the lift arm more distant from the pivot pin than the distal portion of the first end.
• a releasable stay is provided for each pivot arm.
• a stay pivot pin adjacent the lift arm pivot pin pivotally connects an upper end of each stay.
• a lower end of the stay angles outwardly toward an adjacent lift arm to extend across and releasably contact a proximal portion of the top side of the lift arm.
• the spring bias presses the lift arms against the stays, restraining the lift arms from rotation outwardly and upwardly.
• the stay is releasable by a reach tool vertically lowered from the atmospheric opening, allowing the spring biased distal end of the lift arm to pivot laterally outward for capture by the reach tool reach tool vertically lowered from the atmospheric opening.
• each lift arm has a configuration at an bottom portion of the arm for engagement by a reach tool vertically lowered from the atmospheric opening to engage and pivotally pull the stay released lift arm upwardly such that the distal end of the arm travels upward on the sidewalk
• the distal end is a round, optionally a wheel.
• a suspension member unobstructively horizontally spans the passage proximate the support top opening and holds the one or more hinge connected panels in the passage.
• the suspension member is supported on the opposed lateral sidewalls proximate the support top and bottom openings.
• the suspension member has at least one handle connected to the suspension member for holding the suspension member to move it vertically into or out from the supports on the opposed lateral sidewalls.
• the suspension member may comprise a single unitary vertically extending member holding the horizontal hinge and the panels connected to the hinge, or may comprise a beam having vertically hung straps holding the horizontal hinge and the panels connected to the hinge.
• the horizontal hinge comprises a hinge mounting member held by the suspension member and a plurality of hinge members mounted on the hinge mounting member.
• each hinge member comprises a stationary member, a movable member and a hinge pin interconnecting the stationary and movable members, the stationary member connecting to the hinge mounting member, and the moveable hinge member connecting to the proximal end of a panel.
• the horizontal hinge may also comprise a continuous hinge, sometimes called a piano hinge, or any other hinge comprising a moveable joint that connects two linked panels and on which the panels may raise and lower.
• the suspension member is liftingly removably supported centrally between the opposed lateral sidewalls, and suspends a pair of panels in the ventilation passage for rotation of the panels in directions opposite each other from or to said upright home position.
• the atmospheric opening is rectilinear and said support is quadrilateral, the opposing sidewalls each attach centrally in the ventilation passage adjacent the top opening of the shaft a cradle having a pair of spaced apart parallel vertical arms connecting to and standing upright on a horizontal bar for liftingly removably receiving and supporting the beam within such vertical arms and on the horizontal bar.
• a quadrilateral support has at least one indicator on at least one sidewall adjacent the opposed lateral sidewalls to indicate where structure on a panel is located below the indicator.
• the suspension member has ends each of which bears a key extending laterally past a side of the suspension member and each cradle is keyed to receive the key only in one arm of the cradle so a the panel having that structure is located below the indicator
• such centrally supported suspension member may comprise a beam having vertically hung straps holding the horizontal hinge and the panels connected with said horizontal hinge.
• Such beam has ends, lateral sides between the beam ends, and a quadrilateral beam end plate attached to each beam end.
• Each beam end plate has lateral sides extending laterally past the lateral sides of the beam ends.
• the cradles each comprise a vertical included right angle between vertical mutually perpendicular projections of the vertical arm, one projection of each vertical arm attaching to one of the opposed sidewalls. The other projection of each vertical arm is unattached to such one sidewall.
• Such unattached projections and the included right angles of the vertical arms face each other.
• the attached projections are spaced apart sufficiently for vertically receiving the beam end plate within the pair of vertical arms.
• one side of the lateral sides of each beam end plate extends laterally further than the other lateral side of such beam end plate, and one unattached projection of one vertical arm of a cradle has a length longer than the unattached projection of the other vertical arm of that cradle for accepting the lateral side of the beam end plate that extends further than the other lateral side of that beam end plate, thereby to receive the beam end plate within the pair of vertical arms.
• the quadrilateral support has at least one indicator on at least one sidewall adjacent the opposed lateral sidewalls.
• the indicator indicates that certain structure on a panel is to be located below the indicator.
• the longer side of the beam end plates and the longer inset of the vertical arms accepting only the longer side of the end plates allow the beam to be horizontally placed in the cradles only in an orientation placing the particular panel having that structure below the indicator when the panel is in the passage closing position.
• the hinge mounting member has ends, lateral sides between the hinge mounting member ends, and a quadrilateral hinge mounting member end plate attached to each hinge mounting member end.
• the hinge mounting member end plates each have lateral sides extending laterally past the lateral sides of the hinge mounting member ends.
• the opposing sidewalls each attach a pair of spaced apart horizontal anchor bars centrally in the passage below the cradle and adjacent the bottom opening.
• Each anchor bar comprises an included right angle between mutually perpendicular horizontal projections of unequal length, the shorter projection of each anchor bar attaching to one of the opposed sidewalls, the longer projection of that anchor bar being unattached to the one sidewall.
• the unattached projections and the included right angles of the anchor bars face each other.
• the attached projections are spaced apart sufficiently to vertically receive the hinge mounting member end plate within the pair of anchor bars.
• a drain is provided in at least one of the one or more panels intermediate the proximate and distal ends thereof.
• the drain comprises a conduit such as a hollow tube passing though the panel.
• the conduit has an opening at the panel top side.
• the drain includes a self actuating drain closure.
• the closure comprises a plug pivoting rotatably on a drain plug axis positioned between the drain tube and the distal end of the panel having the drain.
• the drain plug axis parallels the horizontal hinge axis of the panels.
• the plug is manually pivotable upwardly on the drain plug axis to remove the plug from the drain opening to drain water contained above the one or more panels when the one or more panels is in the passage closing position.
• the plug by gravitational impetus of its own weight automatically pivots downward to place the plug in the conduit opening when the panel containing the drain is pivotally raised upward to the home position, Then when the panel gravitationally rotates downwardly to the passage closing position, the drain opening is already closed.
• the self actuating drain closure plug includes an upwardly concave sealing gasket around the plug periphery to seal any space between the plug periphery and the conduit opening when the panel containing the plug is in the passage closing position.
• a panel containing a self actuating drain closure has spaced posts fixedly mounted to the top side of the panel between the drain and the distal end of each the panel.
• the drain plug axis comprises a rod spanning between the posts supported by the posts parallel to the horizontal hinge axis and above the panel top side.
• the drain closure comprises a plug arm pivotally rotatable at a proximal end of the arm with or on the rod for movement of the arm to a raised drain opening position and to a lowered drain closing position.
• the rod may be fixed to the posts with the plug arm rotating on the rod, or the plug arm may be fixed to the pivot axis rod with the rod rotating in the posts.
• the plug arm is weighted to place the center of gravity of the plug arm remotely from the rod.
• the plug arm comprises an attachment projection remote from the rod, an upwardly concave sealing gasket, a top plate and a bottom plate.
• the top and bottom plates are both smaller in size than the gasket.
• the concave sealing gasket is secured between the top and bottom plates, at least the bottom plate being of size configured to enter and plug the conduit opening.
• the plates expose an outer upwardly concave gasket portion extending above the bottom plate.
• the plates are fixedly connected to the arm at the attachment projection locating the center of gravity of the arm remotely past the pivot axis of the rod in the direction of the drain, so that after a plug arm is raised from the drain opening to empty water above the panel while the panel is in the passage closing position, rotating the panel upwardly toward the home position causes the plug arm solely by reason of gravity acting on the center of gravity of the raised plug arm, to automatically rotate downwardly from the position raised fro draining the panel to a position parallel to the panel, placing at least the bottom plate in the drain conduit opening closing the opening with the outer upwardly concave gasket portion sealing space between the plates and the opening.
• the plug arm includes a relief on an underside of the arm distal from the rod for capture of the arm by an arm lifting reach tool.
• FIGS. 1-39 show exemplary embodiments having a pair of panels.
• FIGS. 50-51 A show exemplary embodiments having a single panel. Referring initially to FIGS.
• an exemplary embodiment comprises a support embodied in a quadrilateral or four-sided box 210 inclusive of sidewalls 224 (224a, 224b, 224c, 224d) having at the upper extent of the sidewalls flanges 220 (220a, 220b, 220c, 220d) transverse to the sidewalls 224 for extension over a top of walls of a ventilation shaft for suspension of box 210 vertically in the shaft to define a passage 225 between top opening 226 and bottom opening 228 of box 210 for fluid communication of a ventilation duct up through box 210 to an atmospheric opening above top opening 226.
• Cradles 21 la, 21 lc are formed in the upper sides of opposing sidewalls 224a and 224c respectively.
• the apparatus shown is suitable as a drop in solution to sealing vent passages from storm waters by lowering it into a ventilation shaft to rest on walls of the shaft.
• a grating (not pictured) covers top opening 226. In normal operation, operator access to the interior of box 210 is through the grating.
• Stops 230a, 230 b, 230c and 23 Od in the form of corner braces in box 210 are within and connected to sidewalls 224 proximate bottom opening 228 and do not obstruct passage 225.
• Adjacent sidewalls include a base 227 having rounded corners 227a, 227d above respective stops 230a, 23 Od, and a base 229 having rounded corners 229b and 229c above respective stops 230b, 230c.
• Rounded corners 227a, 227d and 229b, 229c have a round corner radius of curvature.
• a beam 242 comprising extruded tubing unobstmctively horizontally spans across passage 225 and connects to opposed sidewalls 224a, 224c of box 210 proximate top opening 226.
• Beam 242 is lodged in cradles 21 la, 21 lc, and is conveniently lowered into channels 211a, 211c by operators holding beam foldable handles 212a, 212c.
• Beam 242 and straps 244 described below comprise a suspension member for equipment described below.
• Beam 242 and its attached equipment can be lowered into place as a complete assembled unit 201 after box 210 is installed in ventilation shaft resting on flanges 220. This assembled unit 201 can be removed from box 210 for servicing by withdrawing beam 242 from channels 211a, 211c by means of handles 212a, 212c.
• a suspension member comprising a beam 242 and straps 244 for supporting equipment described below
• a suspension member may be employed other than beam 242 and straps 244, for example a suspension member can be a single unitary vertically extending solid or fenestrated plate suspending the hinged panels the same as beam 242 and straps 244.
• An advantage of the described beam 242 and straps 244 is a lighter weight imposing a lesser load on flanges 220 than a solid plate, but a fenestrated plate would serve a lighter load advantage as well, albeit likely a more costly element.
• a hinge mounting member 245 unobstmctively horizontally spans across passage 225 the same as beam 242 connected by a plurality of straps 244a, 244b, 244c, 244d to beam 242. Lodged in cradles 211a and 211c, beam 242 and hinge mounting member 245 spanning between sidewalls 224a, 224c are centered in passage 225 of box 210 with beam 242 directly over hinge mounting member 245. Hinge mounting member 245 mounts and supports a plurality of hinge members 243.
• Hinge members 243 each comprise a stationary member 243b, a movable member 243a and a hinge pin 243c that interconnects stationary member 243b and movable member 243a.
• Stationary member 243b connects to hinge mounting member 245.
• a pair of opposing panels 234, 236 each having proximal and distal portions, respectively 234a, 234b and 236a, 236b, are connected at proximal portions 234a, 236a by moveable hinge members 243a to stationary hinge members 243b and thereby to a hinge mounting member 245 and from hinge mounting member 245 via straps 244a, 244b, 244c and 244d to beam 242.
• the connection of moveable hinge members 243a to the proximal portions 234a, 236a of panels 234, 236 on hinge pins 243c forms respective pivot axes of panels 234, 236 for vertical rotation of panels 234, 236.
• Panels 234, 236 rotate in directions opposite each other from or to an upright home position tucked under beam 242. Rotation of the panels upwardly (one clockwise, the other counterclockwise) to home position is effected manually as further described below.
• the home position of the panels tucked under beam 242 does not occlude passage 225.
• Panels 234, 236 in rotation fall solely under the gravitational impetus of their own weight from the upright home position to a lower passage closing position (indicated generally by reference numeral 215) where further rotation is prevented by stops 230a, 230b, 230c, and 230d.
• Each panel has a profile that closes the passage when the panels gravitationally rotate to the passage closing position.
• Panels 234, 236 have a top side plate 238 and a bottom side 232.
• Bottom side 232 is crisscrossed with internal cross braces 237, 239 for rigidity.
• the distal portions of the panels have rounded corners 219 with a radius of curvature substantially the same as the radius of curvature of the sidewall corners 229a, 229b, 229c and 229d they sweep when rotating to the passage closing position.
• the panels include peripheral distal and lateral seals 221, 222 for sealing the passage in the passage closing position, seals 221a, 222a for panel 234 and seals 221b, 222b for panel 236.
• a gasket seal 223 (223a for panel 234, 223b for panel 236) spans the proximal ends of bases of panels 234, 236 below pin 243c and seals bottom opening 228 at the proximal ends of panels 234, 236 when the panels are in the passage closing position. At least one of the panels, such as panel 236 is fitted with a drain 270 intermediate the proximate and distal ends of the panel, as shown in FIGS. 2A and 2B, and further described below.
• each panel 234, 236 topside 238 includes a recess 233 or 233'.
• the recess contains a panel holder latch catch 235 for panel 234, 235' for panel 236 (latch catch 235' is shielded from view in FIG. 12A but will be understood to be the same and operate the same as latch catch 235).
• a panel holder 240 latch 247 for panel 234, 249 for panel 236 (latch 249 is shielded from view in FIG. 6 but will be understood to be the same and operate the same as latch 247.)
• Panel holder 240 inclusive of latches 247, 249 is carried by the suspension member 242.
• Latches 247, 249 are vertically pivotal on a horizontal axis 254 at a proximate end of the latches.
• the latches axis 254 is parallel to the panel axes of pins 243c paralleling either side of hinge mounting member 245.
• Each panel holder latch 247, 249 pivotally extends externally from latch axis 254 distally to an inferior return having a sloped surface ending at an inset notch 251, 25 ⁇ .
• Recesses 233, 233' and latches 247, 249 are horizontally and vertically aligned with each other such that when panel 234, 236 is rotated vertically upward, the inferior return of latch 247, 249 is brought into sliding contact with ramp 241, 241 ' carried by the panel and the sloped surface of the latch slides on ramp 241, 241 ' until inset notch 251, 25 passes over latch catch edge, 235, 235', capturing latch 247, 249. This capture holds panel 234, 236 in home position 213.
• Panel holder 240 is movably suspended from suspension member 242 by a rod 246 connected to panel holder 240.
• Rod 246 is mounted through beam 242 slideably translatable through a brace 255 fastened between straps 244b, 244c and terminates above beam 242 at T-handle 252 under a cover 253 sheltering T-handle
• Rod 246 and T-handle 252 comprise a panel releaser.
• the T-handle provides convenient holding, such as by a projection or hook of a reach tool that can be vertically inserted through a small opening in a grating covering support 210 to reach under cover 253 and hook T-handle 252 for lifting panel holder 240.
• Lifting rod 246 by T-handle 252 moves panel holder 240 upwardly to cause moveable members 247, 249 to lose their hold on catch 241, 241 ' and release panels 234, 236, allowing panels 234, 236 to rotationally gravitationally fall solely by impetus of their own weight from the upright home position 213 to the lower passage closing position 215.
• Panels 234, 236 are provided with structure to raise the panels manually to home position 213.
• Each panel 234, 236 has a handle 259, 259' on its top side 238, 238' remote from the pivot axes of pins 243 c of the hinge members 243 to which the proximate ends 234a, 236a of the panels 234, 236 are connected.
• a tool such as hooking tool 290 can be used by an operator and inserted through a grating over box 210 to grasp handle 259, 259' to lift panel 234, 236.
• FIGS. 20 and 20A depict panel 234, 236 partially raised from the resting position shown in FIGS. 19 and 19 A.
• the lifting operation however must be performed through a small opening in the grating that covers the support 210.
• the opening not only is small but it is deep, limiting operation to only vertical manipulation.
• Lifting panel 234, 236 with a tool 290 to rotate the panel upward fully to home position 213 thus becomes difficult as home position is approached, for very little lateral force can be applied.
• Each panel 234, 236 is provided with an assist mechanism that allows straight vertical movement manipulation through a small opening in the grate to push laterally against panel 234, 236 to facilitate full closure to home position 213.
• This mechanical assist mechanism comprises a lift arm 260 for panel 234 and a lift arm 260' for panel 236.
• each lift arm 260, 260' has a proximal end 261, 261 ' pivotally connected by pivot pin 267 to a bracket 262, 262' fastened to a brace cross member 239 on the bottom side 232 of the panel 234, 236, and each has a pendent distal end 263, 263', optionally comprising a round, which in this embodiment is a terminal wheel 264, 264', but may be a rounded terminus of the end 263, 263'.
• Each lift arm 260, 260' is of a dimension to contact its distal end 263, 263', in this embodiment, wheel 264, 264', with the opposing lateral sidewalls 224a, 224c parallel to beam 242 when distal end 263, 263' pivots outwardly and upwardly inside support box 210.
• lift arms 260, 260' are spring biased to extend the distal ends 263, 263' rotationally outwardly and upwardly, by means of force expressed by a spring 257, 257' centrally coiled around lift arm pivot pin 267, 267', with a proximal short end 257a extending at a right angle across the superior side of lift arm 260, 260' and a distal long end 257b extending at a right angle across the inferior side of lift arm 260, 260' .
• lift arms 260, 260' are restrained from spring biased extension by stays 266, 266' pivotally connected at an upper end by pivot pin 268, 268' to a bracket 256, 256' fastened to brace cross member 239 adjacent the pivotal attachment of the proximal ends of lift arms 260, 260' .
• the lower end 269, 269' of stays 266, 266' is outwardly angled toward lift arms 260, 266' to extend across and releasably contact the proximal superior side of lift arms 260, 260'.
• the spring bias of lift arms 260, 260' presses lift arms 260, 260' against stays 266, 266' to maintain the restraining contact.
• Each lift arm 260, 260' has a configuration at an inferior portion of the arm, such a relief slot 265, 265', for engagement by a hook 291 of a second hooking reach tool 290 lowered though a grate small opening into the box support 210.
• first hooking tool such as tool 290 and lift arms 260, 260' released from stays 266, 266'
• the extended outwardly lift arms 260, 260' can be engaged by snagging slot 266, 266' using the second hooking tool 290.
• lift arm 260, 260' thus engaged while panel 234, 236 is incompletely lifted using a first hooking reach tool 290, an operator can next withdraw the first hooking tool that pulled up the panel 234 or 236 being lifted, holding that panel partially lifted by interference of the distal edge of the panel with the shank 292 of the second tool 290.
• the panel 234, 236 with included recess 233, 233' and ramp 241 have engaged the slope of distal return 248 of latches 247, 249 and inset notch 251 has slide past ramp latch catch edge 235, capturing panel 234, 236 against panel holder 240 with panels 234, 236 essentially vertically disposed.
• the hooking tool 290 is the fully vertically withdrawn though the small opening in the grate.
• Drain 270 comprises a conduit such as hollow tube 271 passing though panel 236 and has an opening 272 at panel top side 238.
• a self actuating drain closure indicated generally by reference numeral 273, includes a plug 274 suitably pivoting rotatably on an axis 275 parallel to the panel axis 243c of panel 236. Plug axis 275 is positioned between drain conduit 271 and the distal end 236b of panel 236.
• plug 274 is manually pivoted upwardly on pivot axis 275 to remove the plug from drain opening 272 while panel 236 is in the passage closing position, to drain flooding water contained in box 210 that has been prevented by panels from entering ventilation shafts guarded by apparatus 200.
• panel 236 is pivotally raised upward to the home position after drainage of box 210 to allow resumption of ventilation between the atmospheric opening and the protected ventilation duct, plug 274 by force of gravity automatically pivots downward to place the plug in conduit aperture 272.
• panel 236 has spaced posts 276, 276' fixedly mounted to the top side 238 of panel 236 between drain 270 and distal end 236b of panel 236.
• a pivot axis rod 275 is supported parallel to the axis 243c of panel 236 by posts 276, 276' and spans between the posts above top side 238 of panel 236.
• Drain closure 273 comprises a plug arm 277 pivotally rotating cooperatively at one end 277a thereof with pivot axis rod 275 for movement of arm 277 to a raised drain opening position and to a lowered drain closing position.
• Pivot axis rod 275 may be fixed to posts 276, 276' with plug arm 277 rotating on pivot axis rod 275, or pivot axis rod 275 may rotate in posts 276, 276' with plug arm 277 fixed to pivot axis rod 275.
• Plug arm 277 comprises an attachment projection 278 remote from pivot axis rod 275.
• Plug 274 further comprises a concave sealing gasket 280, a top plate 281 and a bottom plate 282, both smaller in size than gasket 280.
• the drain conduit 271 is a cylinder
• the top and bottom plates 281 and 282 are circular discs
• the concave gasket 280 is circular.
• Concave sealing gasket 280 is secured between top and bottom plates 281 and 282 by fasteners 283 in holes 284, 284' .
• At least bottom plate 282 is of a size configured to enter and plug conduit opening 272.
• Plates 281, 282 sandwiching gasket 280 expose an outer upwardly concave gasket portion 280' extending above bottom plate 281.
• Plates 281, 282 are fixedly connected to plug arm 277 at attachment projection 278, thereby locating a center of gravity of plug 274 past pivot axis rod 275 in the direction of drain 270.
• plug 274 in raised position for draining box 210 with panel 236 in the passage closing position 215, and panel 236 (with plug 274 in raised position) is then rotated upwardly toward home position to restore ventilation through box 210, plug 274— by reason of gravity acting on the centered mass of the raised plug forward of plug axis 275— falls rotating downwardly from the raised position to a position parallel to panel 236, placing at least bottom plate 282 in the drain conduit opening 272, thereby closing drain conduit opening 272, with the outer upwardly concave gasket portion 280' sealing space between plates 281, 282 and opening 272.
• Plug arm 274 suitably includes an inferior relief 279 intermediate the attachment projection and a terminus of arm 274 remote from rod 275 and plug axis 275 for hooking capture of plug arm 274 by a projection such as 29 Ion hooking reach tool 290.
• An operator insert tool 290 though an opening in a grating covering the support 210, hooks the inferior relief 279 and lifts tool 290 to raise the captured arm 274 to remove plug 274 from drain aperture 270 to drain box 210 while panel 236 is in passage closing position 215.
• FIGS. 47 and 48 the same reference numerals are used as in FIGS. 40-46 where applicable for a variation of the plug 274.
• the variant plug is indicated generally by reference numeral 310.
• FIG. 47 compares to FIG. 35A.
• Plug 310 places the location where a reach tool such as 290 can capture plug arm 277 at an inset 310 formed in the distal end 311 of plug arm 277 above top plate 210.
• Bottom plate 282 is configured to an inverted frustoconical member of greater mass and deeper reach into opening 272 of drain conduit 270, increasing the center of gravity of plug arm 277
• FIGS. 50-51 A another exemplary embodiment employs a single panel.
• Components in the single panel embodiments that are the same as in the exemplary pair of panels embodiments have the same reference numbers as in the exemplary pair of panels embodiments.
• the single panel exemplary embodiment assumes a rectilinear atmospheric opening of a vertical ventilation shaft and allows ventilation as usual through the shaft to an underground ventilation duct fluidly communicating through the ventilation shaft to an atmospheric opening at a grating over the shaft and on threat of flooding is operable to prevent downward flow of surface water into the underground ventilation duct.
• the single panel exemplary embodiment like the pair of panels exemplary embodiments comprises a support embodied as a four-sided vertical box open at bottom and top to define a passage 225 between top and bottom openings of the box support.
• a support embodied as a four-sided vertical box open at bottom and top to define a passage 225 between top and bottom openings of the box support.
• Support box sidewalls 224b, 224c and 224d are visible in the sectional views FIGS 50A and 51 A (sidewall 224a will be understood from descriptions of the embodiments of the pair of panels.
• the four sidewalls 224a, 224b, 224c, 224d of box 218 vertically fit inside the four vertical ventilation shaft walls, as in the pair of panels exemplary embodiments.
• Stops like stops 230a, 230d in the pair of panels exemplary embodiments are within and connected to sidewalls, respectively, 224a, 224b and 224a, 224d, proximate bottom opening like 229 in the exemplary embodiments of FIGS.1-2A where they do not obstruct passage 225.
• Adjacent sidewalls include a base 227 having rounded corners 227a, 127d above respective stops 230a, 23 Od.
• Cradles 211a, 211c are formed in the upper sides of opposing sidewalls 224a and 224c respectively, adjacent sidewall 224d.
• the apparatus shown is suitable as a drop in solution to seal vent passages from storm waters by lowering it into a ventilation shaft to rest on walls of the shaft.
• a grating (not pictured) covers top opening 226. In normal operation, operator access to the interior of the support box is through the grating.
• a beam 242 comprising extruded tubing unobstructively horizontally spans across passage 225 and connects to opposed sidewalls 224a, 224c of box 210 adjacent side wall 224d and proximate top opening 226.
• Beam 242 is lodged in cradles 21 la, 21 lc, and is conveniently lowered into channels 211a, 211c by operators holding beam foldable handles 212a, 212c.
• Beam 242 and straps 244 comprise a suspension member. Beam 242 and its attached equipment can be lowered into place as a complete assembled unit after the support box is installed in ventilation shaft resting on flanges 220. This assembled unit can be removed from the support box for servicing by withdrawing beam 242 from channels 21 la, 21 lc by means of handles 212a, 212c.
• a hinge mounting member 245 unobstructively horizontally spans across passage 225 the same as beam 242 connected by a plurality of straps 244 to beam 242 (only 244d is seen in the sectional views of FIGS. 50A and 51 A).
• beam 242 and hinge mounting member 245 spans between sidewalls 224a, 224c adjacent sidewall 224d with beam 242 directly over hinge mounting member 245.
• Hinge mounting member 245 mounts and supports a plurality of hinge members 243.
• the hinge members 243 each comprise a stationary member 243b, a movable member 243a and a hinge pin 243c that interconnects stationary member 243b and movable member 243a, stationary member 243b connecting to hinge mounting member 245.
• a hinge pin 243c that interconnects stationary member 243b and movable member 243a, stationary member 243b connecting to hinge mounting member 245.
• FIG. 51 A only moveable member 243a is referenced to avoid obfuscation of elements
• a single panel 236 having proximal and distal portions, respectively are connected at proximal portion 236a by moveable hinge members 243a to stationary hinge members 243b and thereby to a hinge mounting member 245 and from hinge mounting member 245 via straps 244a, 244b, 244c and 244d to beam 242, as in the pair of panels exemplars.
• the connection of moveable hinge members 243a to the proximal portion 236a of panels 236 on hinge pins 243c forms a pivot axis of panels 236 for vertical rotation of panel 236.
• Panel 236 rotates from or to an upright home position tucked under beam 242.
• Rotation of panel 236 upwardly (counterclockwise in the exemplary embodiment show) to home position is effected manually as further described below.
• the home position of panel 236 tucked under beam 242 does not occlude passage 225.
• Panel 236 in rotation falls solely under the gravitational impetus of its own weight from the upright home position to a lower passage closing position where further rotation is prevented by stops 230a, 23 Od.
• Each panel has a profile that closes the passage when the panels gravitationally rotate to the passage closing position.
• panel 236 the same as panel 236 in the pair of panels exemplar includes a recess 233' that contains a panel holder latch catch 235' .
• Panel holder 240 inclusive of latch 249 is carried by the suspension member 242.
• Latch 249 is vertically pivotal on a horizontal axis at a proximate end of the latches. The latch axis is parallel to the panel axes of pins 243c.
• Panel holder latch 249 like latch 247 in FIG. 6 pivotally extends externally from the latch axis distally to an inferior return having a sloped surface ending at an inset notch 25 ⁇ .
• Recess 233' and latch 249 are horizontally and vertically aligned with each other such that when panel 236 is rotated vertically upward, the inferior return of latch 249 is brought into sliding contact with ramp 24 carried by the panel, and the sloped surface of the latch slides on ramp 24 until inset notch 25 passes over latch catch edge 235', capturing latch 249. This capture holds panel 234, 236 in home position 213. As in the case of the pair of panels exemplar, the placement of the latch and latch catch can be reversed.
• panel holder 240 is movably suspended from suspension member 242 by a rod 246 connected to panel holder 240.
• Rod 246 is mounted through beam 242 slideably translatable through a brace 255 fastened between straps 244b, 244c and terminates above beam 242 at T- handle 252 under a cover 253 sheltering T-handle 252 from pedestrian view through a grating covering quadrilateral support 210.
• Rod 246 and T-handle 252 comprise a panel releaser.
• the T-handle provides convenient holding, such as by a projection or hook of a reach tool that can be vertically inserted through a small opening in a grating covering support 210 to reach under cover 253 and hook T-handle 252 for lifting panel holder 240.
• Lifting rod 246 by T-handle 252 moves panel holder 240 upwardly to cause moveable members 247, 249 to lose their hold on catch 241, 24 and release panels 234, 236, allowing panels 234, 236 to rotationally gravitationally fall solely by impetus of their own weight from the upright home position 213 to the lower passage closing position 215.
• the single panel exemplary embodiment includes a lift arm 260' having a proximal end 26 pivotally connected by pivot pin 267 to the bottom side of panel 236 on a pivotation axis parallel to the hinge axis 243c and a distal end 263', the lift arm 260' being of dimension to contact distal end 263' with opposed lateral sidewall 224b when distal end 263' is pivoted upward inside sidewall 224b for exertion of lateral force onto connected panel 236 being raised with panel handle 259' to complete rotation of panel 236 into the home position.
• the single panel exemplary embodiment includes a drain 270 in panel 236 intermediate the proximate and distal ends thereof, the drain 270 comprising a conduit 271 passing though panel 236.
• Conduit 271 has an opening 272 at the top side of panel 236 and a self actuating drain closure 273 comprising a plug 274 pivotingly rotatable on a drain plug axis 275 positioned between the drain conduit 271 and the distal end 236b of panel 236, the drain plug axis 275 paralleling the horizontal hinge axis 243c.
• plug 274 is manually pivotable upwardly on the drain plug axis 275 to remove the plug from the drain opening 272 to drain water contained in the support box that has been prevented by panel 236 from entering a ventilation shaft when panel 236 is in the passage closing position.
• plug 274 After drainage of the support box. as panel 236 is pivotally raised upward to the home position to allow resumption of ventilation between the atmospheric opening and the protected ventilation duct, plug 274 by gravitational impetus of its own weight automatically pivots downward to place the plug in the conduit opening 272. Consequently, drain conduit opening 272 is already closed when panel 236 gravitationally rotates downwardly to the passage closing position.
• At least said bottom plate being of size configured to enter and plug said conduit opening, said plates exposing an outer upwardly concave gasket portion extending above said bottom plate, said plates being fixedly connected to said arm at said attachment projection locating a center of gravity of said arm past said pivot axis of said rod in said direction of said drain, so that after a panel containing said drain has a said plug arm in said raised position to drain water above the panel while said panel is in said passage closing position, when said panel containing said drain with said plug arm in raised position is rotated upwardly toward said home position, said plug arm by reason of gravity acting on said center of gravity of said raised plug arm rotates said plug arm downwardly from said raised position to a position parallel to said parallel to said panel, placing at least said bottom plate in said drain conduit opening thereby closing said opening with said outer upwardly concave gasket portion sealing space between said plates and said opening.
• said plug arm includes a recess on a end of the arm distal from said rod for capture of the arm by an arm lifting reach tool.

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• Engineering & Computer Science (AREA)
• Mining & Mineral Resources (AREA)
• Life Sciences & Earth Sciences (AREA)
• General Life Sciences & Earth Sciences (AREA)
• Geochemistry & Mineralogy (AREA)
• Geology (AREA)
• Air-Flow Control Members (AREA)
• Ventilation (AREA)
• Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
• Duct Arrangements (AREA)
• Buildings Adapted To Withstand Abnormal External Influences (AREA)
• Ceramic Products (AREA)
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• 2017
  • 2017-07-14 EP EP17828567.2A patent/EP3485116B1/de active Active
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