US20190211821A1 - Arrangement for a Screw Compressor of a Utility Vehicle - Google Patents

Arrangement for a Screw Compressor of a Utility Vehicle Download PDF

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Publication number
US20190211821A1
US20190211821A1 US16/353,755 US201916353755A US2019211821A1 US 20190211821 A1 US20190211821 A1 US 20190211821A1 US 201916353755 A US201916353755 A US 201916353755A US 2019211821 A1 US2019211821 A1 US 2019211821A1
Authority
US
United States
Prior art keywords
baffle plate
arrangement
oil
screw compressor
housing
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.)
Abandoned
Application number
US16/353,755
Other languages
English (en)
Inventor
Gilles Hebrard
Jean-Baptiste Marescot
Joerg MELLAR
Thomas Weinhold
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.)
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Original Assignee
Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
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
Application filed by Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH filed Critical Knorr Bremse Systeme fuer Nutzfahrzeuge GmbH
Publication of US20190211821A1 publication Critical patent/US20190211821A1/en
Assigned to KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH reassignment KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: Marescot, Jean-Baptiste, HEBRARD, GILLES, MELLAR, JOERG, WEINHOLD, THOMAS
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
    • F04C18/08—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
    • F04C18/12—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
    • F04C18/14—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons
    • F04C18/16—Rotary-piston pumps specially adapted for elastic fluids of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type with toothed rotary pistons with helical teeth, e.g. chevron-shaped, screw type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/04—Heating; Cooling; Heat insulation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2210/00—Fluid
    • F04C2210/14—Lubricant
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/30—Casings or housings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C2240/00—Components
    • F04C2240/80—Other components
    • F04C2240/809—Lubricant sump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/02—Lubrication; Lubricant separation
    • F04C29/026—Lubricant separation

Definitions

  • the present invention relates to an arrangement for a screw compressor of a utility vehicle, comprising at least one housing component of the screw compressor and a baffle plate.
  • Screw compressors for utility vehicles are already known from the prior art. Such screw compressors are used, for example, to provide the compressed air required for the brake system of the utility vehicle.
  • oil-filled compressors in particular also screw compressors
  • screw compressors in the case of which it is necessary to regulate the oil temperature.
  • an external oil cooler being provided which is connected to the oil-filled compressor and to the oil circuit via a thermostat valve.
  • the oil cooler is a heat exchanger which has two mutually separate circuits, wherein the first circuit is provided for the hot liquid, that is to say the compressor oil, and the second circuit is provided for the cooling liquid.
  • cooling liquid use may for example be made of air, water mixtures with an antifreeze, or another oil.
  • This oil cooler must then be connected to the compressor oil circuit by way of pipes or hoses, and the oil circuit must be safeguarded against leakage.
  • This external volume must furthermore be filled with oil, such that the total quantity of oil is also increased.
  • the system inertia is thus increased.
  • the oil cooler must be mechanically accommodated and fastened, either by way of brackets situated in the surroundings or by way of a separate bracket, which necessitates additional fastening means and also structural space.
  • DE 37 17 493 A1 discloses a screw compressor installation which is arranged in a compact housing and which has an oil cooler on the electric motor of the screw compressor.
  • a generic screw compressor is already known for example from DE 10 2004 060 417 B4.
  • an arrangement for a screw compressor of a utility vehicle having the claimed features. Provision is made for an arrangement for a screw compressor of a utility vehicle to comprise at least one housing component of the screw compressor and a baffle plate, wherein the baffle plate is, in the assembled state, inserted in clamped fashion in the housing component.
  • the invention is based on the underlying concept of the fastening of the baffle plate in the housing component of the screw compressor being realized in a simple and reliable manner. This is realized in particular by virtue of the baffle plate being held with clamping action in the housing. For this purpose, a mere insertion of the baffle plate into the housing component is sufficient to permit a reliable fastening.
  • the housing component advantageously has at least three baffle plate receiving apertures, wherein at least one baffle plate receiving aperture is arranged outside an imaginary line which connects the two other baffle plate receiving apertures, and wherein the baffle plate has at least three fingers which, in the assembled state of the arrangement, are inserted in each case into a baffle plate receiving aperture assigned to the respective finger.
  • this arrangement results in a bending force being exerted on the baffle plate during the insertion process, such that said baffle plate is held in clamped fashion in the housing component.
  • the baffle plate is thus held with clamping action in the housing component and can, after being inserted into the baffle plate receiving apertures, be held securely therein owing to the bending force exerted as a result of the shaping and arrangement of the baffle plate receiving apertures. Falling out is hereby reliably prevented. Due to the fastening by way of baffle plate receiving apertures and correspondingly associated fingers in the baffle plate, simple production is made possible. Due to the insertion of the baffle plate into the baffle plate receiving apertures, the assembly process is furthermore made relatively straightforward. Even automated fitting and assembly is conceivable and possible.
  • the housing component may be the rotor housing of the screw compressor.
  • the baffle plate it is advantageous in particular for the baffle plate to be arranged below the rotors (in relation to the assembled state).
  • the housing component is the housing cover of the screw compressor.
  • a first housing component of the housing such as for example the housing cover
  • the fastening it is made possible for the fastening to be realized only in one single housing component. Since the baffle plate is hereby already securely held, a fastening in another housing component of the housing of the screw compressor is no longer necessary. This fact self-evidently also applies analogously to an arrangement of the baffle plate and a fastening of the baffle plate in the rotor housing.
  • the middle region the bending force is formed which then serves for clamping of the baffle plate in the baffle plate receiving apertures or in the housing component of the screw compressor.
  • the bending forces required for the assembly process, which can be imparted for this purpose, are furthermore relatively easy to apply because the baffle plate has to be bent in the middle, and then an insertion can be performed relatively easily.
  • the fingers of the baffle plate may be substantially in alignment in the non-inserted and non-assembled state. It is contemplated in particular for the baffle plate, in the non-bent state, to be a relatively simple flat non-bent or planar plate. By means of such an arrangement, inexpensive manufacture is made possible, and an easy application of the required bending forces for the insertion of the baffle plate into the housing component is achieved. In particular, provision may be made whereby the baffle plate is, in the inserted and assembled state, as a result of the insertion of the fingers into the respectively associated baffle plate receiving apertures, bent such that the baffle plate is held braced with clamping action in the housing component.
  • the baffle plate is blocked in the housing component merely as a result of the insertion of its three fingers into the associated baffle plate receiving apertures. Owing to the fact that the bending promotes the braced holding with clamping action, a self-securing holding action is achieved in this way.
  • the fingers of the baffle plate may all be arranged at one edge of the baffle plate. Simple manufacture is hereby achieved. For the insertion of the baffle plate in the housing component, a single movement is thus sufficient, and an additional adjustment or insertion into other housing components is not necessary.
  • FIG. 1 is a schematic sectional drawing through an exemplary screw compressor according to the invention.
  • FIG. 2 is a perspective view of the rotor housing of the screw compressor as per FIG. 1 .
  • FIG. 3 is a perspective view of the baffle plate as per FIG. 2 .
  • FIG. 4 is a detailed plan view of the baffle plate receiving apertures in the rotor housing as per the exemplary embodiment in FIG. 2 .
  • FIG. 1 shows, in a schematic sectional illustration, a screw compressor 10 in the context of an exemplary embodiment of the present invention.
  • the screw compressor 10 has a fastening flange 12 for the mechanical fastening of the screw compressor 10 to an electric motor (not shown in any more detail here).
  • the screw 18 meshes with the screw 16 and is driven by means of the latter.
  • the screw compressor 10 has a housing 20 in which the main components of the screw compressor 10 are accommodated.
  • the housing 20 is filled with oil 22 .
  • an inlet connector 24 is provided on the housing 20 of the screw compressor 10 .
  • the inlet connector 24 is in this case designed such that an air filter 26 is arranged at said inlet connector.
  • an air inlet 28 is provided radially on the air inlet connector 24 .
  • a spring-loaded valve insert 30 is provided, which is designed here as an axial seal.
  • the valve insert 30 serves as a check valve.
  • an air feed channel 32 feeds the air to the two screws 16 , 18 .
  • an air outlet pipe 34 with a riser line 36 is provided.
  • a temperature sensor 38 is provided by which the oil temperature can be monitored.
  • a holder 40 for an air deoiling element 42 is also provided in the air outlet region.
  • the holder 40 for the air deoiling element has the air deoiling element 42 in the region facing toward the base (as also shown in FIG. 1 ).
  • a corresponding filter screen or known filter and oil separation devices 44 is also provided, in the interior of the air deoiling element 42 , which will not be specified in any more detail.
  • the holder for the air deoiling element 42 has an air outlet opening 46 which lead to a check valve 48 and a minimum pressure valve 50 .
  • the check valve 48 and the minimum pressure valve 50 may also be formed in one common combined valve.
  • the air outlet 51 is provided downstream of the check valve 48 .
  • the air outlet 51 is generally connected to correspondingly known compressed-air consumers.
  • a riser line 52 is provided which has a filter and check valve 54 at the outlet of the holder 40 for the air deoiling element 42 at the transition into the housing 20 .
  • a nozzle 56 is provided, downstream of the filter and check valve 54 , in a housing bore.
  • the oil return line 58 leads back into approximately the central region of the screw 16 or of the screw 18 in order to feed oil 22 thereto again.
  • An oil drain screw 59 is provided in the base region, in the assembled state, of the housing 20 .
  • a corresponding oil outflow opening can be opened, via which the oil 22 can be drained.
  • the attachment piece 60 to which the oil filter 62 is fastened. Via an oil filter inlet channel 64 , which is arranged in the housing 20 , the oil 22 is conducted firstly to a thermostat valve 66 .
  • thermostat valve 66 it is possible for an open-loop and/or closed-loop control device to be provided by which the oil temperature of the oil 22 situated in the housing 20 can be monitored and set to a setpoint value.
  • the cooler 74 is connected to the attachment piece 60 , as will be discussed in more detail below in FIGS. 2 to 4 .
  • a safety valve 76 In the upper region of the housing 20 (in relation to the assembled state), there is situated a safety valve 76 , by which an excessively high pressure in the housing 20 can be dissipated.
  • a bypass line 78 which leads to a relief valve 80 .
  • a relief valve 80 Via the relief valve 80 , which is activated by way of a connection to the air feed 32 , air can be returned into the region of the air inlet 28 .
  • a ventilation valve not shown in any more detail
  • a nozzle diameter constriction of the feeding line
  • an oil level sensor 82 may be provided in the outer wall of the housing 20 .
  • the oil level sensor 82 may for example be an optical sensor, and may be designed and configured such that, on the basis of the sensor signal, it can be identified whether the oil level during operation is above the oil level sensor 82 or whether the oil level sensor 82 is exposed, and thus the oil level has correspondingly fallen.
  • an alarm unit which outputs or transmits a corresponding error message or warning message to the user of the system.
  • the function of the screw compressor 10 shown in FIG. 1 is as follows.
  • Air is fed via the air inlet 28 and passes via the check valve 30 to the screws 16 , 18 , where the air is compressed.
  • the compressed air-oil mixture which, having been compressed by a factor of between 5 and 16 downstream of the screws 16 and 18 , rises through the outlet line 34 via the riser pipe 36 , and is blown directly onto the temperature sensor 38 .
  • the air which still partially carries oil particles, is then conducted via the holder 40 into the air deoiling element 42 and, if the corresponding minimum pressure is attained, passes into the air outlet line 51 .
  • the oil 22 situated in the housing 20 is kept at operating temperature via the oil filter 62 and possibly via the heat exchanger 74 .
  • the heat exchanger 74 is not used and is also not activated.
  • the corresponding activation is performed by way of the thermostat valve 66 .
  • oil is fed via the line 68 to the screw 18 or to the screw 16 , and also to the bearing 72 .
  • the screw 16 or the screw 18 is supplied with oil 22 via the return line 52 , 58 , and the purification of the oil 22 takes place here in the air deoiling element 42 .
  • the relief valve 80 (not shown in any more detail), it is ensured that the high pressure that prevails for example at the outlet side of the screws 16 , 18 in the operational state cannot be enclosed in the region of the feed line 32 , and that, instead, in particular during the start-up of the compressor, there is always a low inlet pressure, in particular atmospheric pressure, prevailing in the region of the feed line 32 . Otherwise, upon a start-up of the compressor, a very high pressure would initially be generated at the outlet side of the screws 16 and 18 , which would overload the drive motor.
  • FIG. 2 shows, in a perspective view, the arrangement for the screw compressor 10 of the utility vehicle having the at least one housing component, in this case the rotor housing 20 a, and the baffle plate 100 .
  • baffle plate 100 has been inserted into the rotor housing 20 a.
  • the housing cover of the screw compressor 10 may also be used instead of the rotor housing 20 a.
  • the baffle plate 100 In the inserted and assembled state as shown in FIG. 2 , the baffle plate 100 has been bent as a result of the insertion into the rotor housing 20 a, such that the baffle plate 100 is held braced with a clamping action in the rotor housing 20 a.
  • fingers 102 specifically three fingers 102 , are arranged on one side on the baffle plate 100 .
  • the rotor housing 20 a has three baffle plate receiving apertures 104 .
  • baffle plate receiving apertures 104 are arranged such that the two outer baffle plate receiving apertures 104 form a line, and the third baffle plate receiving aperture 104 is arranged offset in relation to that line. The three baffle plate receiving apertures 104 are thus not in alignment.
  • the middle of the three baffle plate receiving apertures 104 is arranged outside the imaginary line that connects the two other baffle plate receiving apertures 104 .
  • the baffle plate 100 is inserted into the baffle plate receiving apertures 104 .
  • the baffle plate 100 Due to the offset of the middle baffle plate receiving aperture 104 , the baffle plate 100 is, owing to its stiffness, held firstly in bent fashion but also with a self-securing action, because the bending force that is furthermore exerted and the arrangement of the fingers 102 ensure that the baffle plate 100 is held braced with clamping action in the rotor housing 20 a by way of its fingers 102 in the baffle plate receiving apertures 104 of the rotor housing 20 a.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Applications Or Details Of Rotary Compressors (AREA)
  • Rotary Pumps (AREA)
US16/353,755 2016-09-21 2019-03-14 Arrangement for a Screw Compressor of a Utility Vehicle Abandoned US20190211821A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102016011444.4A DE102016011444A1 (de) 2016-09-21 2016-09-21 Anordnung für einen Schraubenkompressor eines Nutzfahrzeugs
DE102016011444.4 2016-09-21
PCT/EP2017/073576 WO2018054876A1 (de) 2016-09-21 2017-09-19 Anordnung für einen schraubenkompressor eines nutzfahrzeugs

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2017/073576 Continuation WO2018054876A1 (de) 2016-09-21 2017-09-19 Anordnung für einen schraubenkompressor eines nutzfahrzeugs

Publications (1)

Publication Number Publication Date
US20190211821A1 true US20190211821A1 (en) 2019-07-11

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US16/353,755 Abandoned US20190211821A1 (en) 2016-09-21 2019-03-14 Arrangement for a Screw Compressor of a Utility Vehicle

Country Status (8)

Country Link
US (1) US20190211821A1 (de)
EP (1) EP3516220A1 (de)
JP (1) JP2019532223A (de)
KR (1) KR20190049862A (de)
CN (1) CN109937302B (de)
BR (1) BR112019005101A2 (de)
DE (1) DE102016011444A1 (de)
WO (1) WO2018054876A1 (de)

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Publication number Priority date Publication date Assignee Title
BE1030225B1 (nl) * 2022-01-27 2023-08-28 Atlas Copco Airpower Nv Olie-geïnjecteerde compressorinrichting

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JPS59176490A (ja) * 1983-03-24 1984-10-05 Toyoda Autom Loom Works Ltd スクリユ−圧縮機
US4748873A (en) 1986-05-23 1988-06-07 Raymond Engineering Inc. Power wrench
US4792288A (en) * 1986-11-28 1988-12-20 Siemens Aktiengesellschaft Encapsulated compressor
US4780061A (en) 1987-08-06 1988-10-25 American Standard Inc. Screw compressor with integral oil cooling
JPH0326879A (ja) * 1989-06-23 1991-02-05 Daikin Ind Ltd 圧縮機の油分離器
JPH1037870A (ja) * 1996-07-25 1998-02-13 Mitsubishi Electric Corp スクロール圧縮機
KR100318418B1 (ko) * 1999-12-30 2001-12-22 신영주 압축기 내장형 오일분리기
US6705270B1 (en) 2000-04-26 2004-03-16 Basf Corporation Oil pan module for internal combustion engines
JP4106280B2 (ja) * 2002-09-30 2008-06-25 北越工業株式会社 液冷式圧縮機の気液分離装置
DE102004060417B4 (de) 2004-12-14 2006-10-26 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Kompakter Schraubenkompressor zum mobilen Einsatz in einem Fahrzeug
JP5313860B2 (ja) * 2009-12-22 2013-10-09 株式会社神戸製鋼所 スクリュー圧縮機
DE102010015147A1 (de) * 2010-04-16 2011-10-20 Knorr-Bremse Systeme für Schienenfahrzeuge GmbH Ölschwappdämpfungseinrichtung für einen Schraubenverdichter
CN104214096B (zh) * 2014-08-15 2017-04-12 珠海格力电器股份有限公司 螺杆压缩机及其油分桶部件
DE202016100437U1 (de) 2016-01-29 2016-05-02 Borgward Trademark Holdings Gmbh Motorölprallplatte und Motor

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Publication number Publication date
EP3516220A1 (de) 2019-07-31
CN109937302A (zh) 2019-06-25
WO2018054876A1 (de) 2018-03-29
JP2019532223A (ja) 2019-11-07
CN109937302B (zh) 2020-09-29
DE102016011444A1 (de) 2018-03-22
KR20190049862A (ko) 2019-05-09
BR112019005101A2 (pt) 2019-06-04

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AS Assignment

Owner name: KNORR-BREMSE SYSTEME FUER NUTZFAHRZEUGE GMBH, GERM

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:HEBRARD, GILLES;MARESCOT, JEAN-BAPTISTE;MELLAR, JOERG;AND OTHERS;SIGNING DATES FROM 20190702 TO 20190710;REEL/FRAME:050194/0061

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STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION