EP0206154B1 - Soupape à lame élastique pour la sortie d'une pompe - Google Patents

Soupape à lame élastique pour la sortie d'une pompe Download PDF

Info

Publication number
EP0206154B1
EP0206154B1 EP86108053A EP86108053A EP0206154B1 EP 0206154 B1 EP0206154 B1 EP 0206154B1 EP 86108053 A EP86108053 A EP 86108053A EP 86108053 A EP86108053 A EP 86108053A EP 0206154 B1 EP0206154 B1 EP 0206154B1
Authority
EP
European Patent Office
Prior art keywords
valve
leaf
spring
outlet opening
pocket
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 - Lifetime
Application number
EP86108053A
Other languages
German (de)
English (en)
Other versions
EP0206154A3 (en
EP0206154A2 (fr
Inventor
Siegfried Hertell
Detlev Otto
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.)
Oerlikon Barmag AG
Original Assignee
Barmag AG
Barmag Barmer Maschinenfabrik AG
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 Barmag AG, Barmag Barmer Maschinenfabrik AG filed Critical Barmag AG
Publication of EP0206154A2 publication Critical patent/EP0206154A2/fr
Publication of EP0206154A3 publication Critical patent/EP0206154A3/de
Application granted granted Critical
Publication of EP0206154B1 publication Critical patent/EP0206154B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • F04C29/00—Component parts, details or accessories of pumps or pumping installations, not provided for in groups F04C18/00 - F04C28/00
    • F04C29/12—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet
    • F04C29/124—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps
    • F04C29/126—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type
    • F04C29/128—Arrangements for admission or discharge of the working fluid, e.g. constructional features of the inlet or outlet with inlet and outlet valves specially adapted for rotary or oscillating piston pumps of the non-return type of the elastic type, e.g. reed valves
    • 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
    • F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
    • F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
    • F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
    • F04C18/3441—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member the inner and outer member being in contact along one line or continuous surface substantially parallel to the axis of rotation

Definitions

  • the invention relates to a leaf valve according to the preamble of claim 1. Its proven application is particularly in the air pumps, in particular in vane pumps.
  • Vane vacuum pumps of this type are increasingly used in motor vehicles, in particular with a diesel engine or injection petrol engine, to generate the vacuum for servo consumers, in particular for the brake booster.
  • the pumps are connected to the engine's lubricating oil pump for lubrication.
  • the vane vacuum pumps are flanged to the engine block so that the exhaust port communicates with the engine crankcase. As a result, the air that is expelled can escape together with the lubricating oil into the crankcase. This results in space and installation problems in small-sized engines with a number of auxiliary units, which also have to be driven by the motor vehicle engine.
  • valve tapes lie on the sealing surface which surrounds the outlet opening on all sides and are clamped on one side. It is necessary for the free end to be at such a large distance from the clamping point that a sufficiently large valve path is possible even with relatively low outlet pressures. For this reason, these elongated, tongue-like valve strips are space-consuming. These valve bands must be straight, otherwise they will tilt.
  • GB-A-891.313 discloses a leaf spring valve for a compressor which essentially consists of a flat spring plate, formed from two arms arranged at right angles to one another, resting on the flat end face of the compressor cylinder, and milled into a screwed connection to the cylinder end face Intermediate plate is housed.
  • One arm forms the fastening arm, which is tensioned along its entire length, the other arm is shaped as a valve tongue and is connected to the fastening arm via a narrow section.
  • the fastening arm is pressed on via a support body covering the valve plate, the support section of which runs parallel to the bearing surface.
  • the invention has for its object to provide a way to provide tilting movements of the tongue part of the valve band when opening the valve in a generic leaf spring valve while maintaining the sufficient band length enabling curved, the contours of the ring surface and guided from only one side to the outlet opening avoid.
  • the pump outlet opening opens into an annular groove concentrically surrounding a bearing eye of the pump and the valve strip is circumscribed in its outer contours by a part of the annular groove that a straight secant of the annular groove passing through the center of gravity of the pump outlet opening has the line of symmetry of the is the spring tongue adjoining the clamping end of the valve band and that on this straight secant of the ring surface there is essentially also the center of gravity of the closure plate covering the pump outlet opening on all sides.
  • the spring tongue can be designed as an elongated rectangle or symmetrical parallelogram.
  • the course of the line of symmetry through the center of gravity of the closure plate and the pump outlet opening prevents tilting movements of the closure plate.
  • the bulge takes the form of a cylinder jacket.
  • valve band covering the outlet opening As a result of the great mobility of the valve band covering the outlet opening, which is made possible by the invention, it may be necessary to avoid kinking of the valve band.
  • valve band clamped on the sealing surface by a support body is pressed firmly onto the sealing surface in the region of the clamping point and stands out from the sealing surface in a continuous line between the respective clamping point and the outlet opening.
  • Support body preferably extends over the entire sealing surface, wherein it is arched over the outlet opening in a steady curve and wherein preferably the curvature maximum lies above the outlet opening. The opening movement can be precisely controlled and limited by such a support body.
  • the support body is essentially adapted to the contours of the ring surface in the projection onto the sealing surface.
  • the support body of the spring tongue does not force any tilting movements.
  • the gradient of curvature of the support body is essentially parallel to the straight line of symmetry, and the intersection line between the flat part and the curved part of the support body is exactly perpendicular to the line of symmetry and represents the boundary line between the clamping end and the spring tongue of the valve band.
  • the aim of the invention to avoid tilting of the valve band and thus to enable the valve band to rest evenly, on the other hand to prevent one-sided wear this is sometimes disturbed by contaminants which are flushed out of the outlet opening of the pump and become lodged between the annular surface and the valve band.
  • the washing pocket lies in the region of the cutting line of the flat part and the curved part of the valve band or the support plate. This ensures that a stronger air flow is made possible in this area, in which there are only very small gap widths when the valve strip is lifted off the seat.
  • the one radially directed edge of the washing pocket corresponds substantially exactly to the cutting line between the flat part and the curved part of the support plate.
  • the washing pocket interrupts the full support of the valve band on the seat surface to only an insignificant extent.
  • the washing pocket has a smaller width than the leaf spring or spring tongue over the substantial part of its length, measured in the circumferential direction, measured in the radial direction, and that the washing pocket only has one longitudinal end and one at the the other longitudinal end lateral bulges are provided which protrude from the spring band and which are on opposite sides.
  • the support of the spring band on the seat surface is interrupted only in the area of these lateral recesses. On the other hand, these lateral recesses are sufficient to rinse out the sink bag.
  • the outlet duct lies in a bearing shaft which is attached to the housing and projects into the crankcase of the motor vehicle engine.
  • the outlet opening lies on an end face of this bearing shaft.
  • the valve band lies on this end face in an annular groove which surrounds the drive shaft.
  • valve band is inserted for protection and guidance in the groove on the front of the housing or bearing shaft.
  • the vane pump according to FIG. 1 serves to generate a vacuum in servo consumers, in particular in brake boosters for motor vehicles. It is flanged with its housing 1 to the only partially shown crankcase 2 of the motor vehicle engine in such a way that the bearing socket 3 of the pump housing projects into the interior of the crankcase.
  • the rotor 4 of the vane pump has an integrally formed shaft stub 5. In the end face of the shaft stub 5, recesses 6 are made, into which the coupling tabs 7 of the drive shaft 8 engage.
  • the drive shaft 8 can e.g. the engine camshaft.
  • the drive shaft 8 guides a lubricating oil channel 9. This lubricating oil channel is connected to a lubricating oil collecting space 11 by coupling piece 10. Branches of the lubricating oil collecting space 11 include the branch channel 12 into the interior of the pump housing.
  • the vane pump is therefore lubricated with the lubricating oil of the motor vehicle engine supplied under pressure.
  • the stub shaft 5 is rotatably supported in the bearing socket 3.
  • Rotor 4 and blades 13, 14 are not shown in detail.
  • An exhaust valve is also shown in this earlier application.
  • the pump outlet is an elongated hole 15 which extends over an angle of 10 ° or more and is made in one end face of the pump housing 1. It is e.g. around an outlet kidney, which - seen in the direction of rotation - extends on the outer periphery of the pump housing before bottom dead center.
  • This outlet kidney 15 merges into an outlet channel 16.
  • the outlet channel 16 extends axially parallel through the bearing socket 3.
  • the outlet opening 17 lies on the end face of the bearing socket in the bottom of a groove 18.
  • This groove 18 is circular and lies concentrically with the bearing eye.
  • the outlet valve in the form of a valve band 19 is inserted into this groove.
  • the valve band 19 is clamped on a partial circumference of the groove on the groove base.
  • the valve band 19 is resiliently movable in the opening direction over the remaining peripheral region. Since the valve band 19 is a resilient, flat band, e.g. Steel band, it lies in the unloaded state on the sealing surface, i.e. sealing the bottom of the groove. Under the outlet pressure in the outlet channel 16, the valve band lifts off the outlet opening 17.
  • a support body 20 is also inserted into the annular groove. The support body 20 bulges against the bottom of the groove.
  • the support body can be a substantially rigid or an elastic, relatively spring-stiff body.
  • the maximum of the curvature lies above the outlet opening 17.
  • the support body 20 bulge in the direction of the outlet opening 17 in a steady, gentle curve from the valve band 19. This ensures that the valve band 19 is deformed when lifting and opening the outlet opening 17 in a correspondingly gentle bending line, see also that kinks are avoided.
  • valve band 19 is inserted into an annular groove and clamped on the sealing surface on one side at the clamping point 21 by screw.
  • the elongated outlet opening 17 of the outlet channel 16 lies in the sealing surface.
  • valve band 19 consists of a clamping end 24, a spring tongue 25 and a closing plate 26. These parts are formed by corresponding recesses from a partially annular spring plate.
  • the clamping end 24 is designed in the form of a partial ring.
  • the clamping end 24 largely conforms to the contour of the groove, so that the valve band is fixed in its position by the clamping end 24.
  • the valve band has an offset that is located radially on the outside.
  • a spring tongue 25 adjoins this offset.
  • the spring tongue has the shape of an elongated rectangle in the example shown. However, other shapes are also possible. It is essential that the spring tongue 25 is mirror-symmetrical to the line of symmetry 27.
  • the line of symmetry is secant to the annular groove, in such a way that it intersects the centroid 28 of the outlet opening 17.
  • the line of symmetry 27 intersects the outlet opening 17 such that no tilting moment is exerted on the closure plate 26.
  • the closing plate 26 connects to the spring tongue 25. It conforms in its outer contours to the contour of the outlet opening 17 in such a way that it overlaps the outlet opening 17 on all sides with a sufficiently wide sealing surface.
  • This means that the line of symmetry 27 also passes through the center of gravity of the closure plate 26.
  • compressive forces are exerted on the closure plate 26.
  • the sealing plate is divided into two halves by the line of symmetry 27. The compressive forces that act on these two halves exert a tilting moment about the axis of symmetry in one or the other direction. The special arrangement of the symmetry line causes these tilting moments to cancel each other out.
  • a line 29 is shown in Fig. 3E.
  • This line 29 is the line of intersection which occurs when the valve sheet is opened, i.e. when the closure plate 26 and the spring tongue 25 bulge, between the curved part of the spring plate and the flat clamping end 24. It can be seen that this section line 29 forms a right angle with the line of symmetry 27. Accordingly, all lines of the same curvature lie parallel to this cutting line.
  • the special design of the spring tongue and the support body ensures that the valve band in the manner of a part of a cylinder jacket, i.e. bulges with generators parallel to each other.
  • FIGS. 3B, 3C, 3D show an embodiment in which a support plate 20 is additionally used.
  • the support plate 20 is partially annular. It has a flat clamping piece. With this clamping piece, it is pressed by screw 21 onto the seat surface of the groove 18 and the clamping end 24 of the valve band 19.
  • the support body 20 bulges in a continuous line toward its free end.
  • the line of intersection between the flat part and the bulged part lies in line 29, which is shown in FIG. 3D and coincides with line 29 according to FIGS. 3A and 3E.
  • the bulged part of the support body 20 is also formed as part of a cylinder jacket.
  • the support body 20 extends over the entire length of the valve band 19.
  • FIG. 3D shows that the support body 20 can also extend over only a partial length of the valve band 19. It fulfills its essential function by preventing the valve band from being locally overloaded and kinking. Such an overload can arise in particular in the area of the cutting line 29.
  • the washing pocket 30 lies in the region of the valve band which, when opened, lifts off the seat surface of the groove 18 with only a slight gap. Therefore, the one peripheral edge 31 preferably lies on the cutting line 29, in which the flat part and the curved part of the valve band or the support plate intersect.
  • the other circumferential edge 32 lies at a reasonable distance from the first circumferential edge 31, ie in an area in which the valve band 19 forms a sufficiently large gap with the seat surface of the groove 18 when it is opened.
  • the side edges 33 of the washing pocket 30 lie parallel to the side edges of the spring tongue 25, in such a way that the spring tongue 25 can be supported with sufficient overlap in the region of the side edges 33 on the seat surface of the groove 18.
  • the washing pocket 30 furthermore has the two recesses 34 and 35 which are integrally formed on the washing pocket.
  • the recesses 34, 35 project beyond the side edges of the spring tongue 25.
  • the recess 34 is on one side, the recess 35 on the other side of the spring tongue.
  • one recess lies at one circumferential end and the other recess at the other circumferential end of the sink pocket 30. It should be mentioned that the recesses do not necessarily also protrude beyond the support body.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Check Valves (AREA)
  • Rotary Pumps (AREA)

Claims (7)

1. Soupape à lame élastique (19) placée dans un échappement de pompe (17), en particulier sur des pompes cellulaires à palettes (1), des pompes à vide cellulaires à palettes, des pompes à engrenages, des pompes à engrenages intérieurs, la soupape à lame élastique étant und bande soupape (19) plate élastique, fixée d'un côté et présentant à une extrémité une languette (25) recouvrant l'orifice d'échappement (17), caractérisée en ce que l'orifice d'échappement de pompe (17) débouche dans une gorge annulaire (18) entourant concentriquement un manchon palier (3) de la pompe (1) et que la bande soupape (19) est délimitée sur ses contours extérieurs par une partie de la gorge annulaire (18), en ce qu'une droite sécante de la gorge annulaire (18), passant par le centre de gravité (28) de la surface de l'orifice d'échappement de pompe (17) est l'axe de symétrie (27) de la languette élastique (25) qui se raccorde à l'extrémité de serrage (24) de la bande soupape (19) et en ce que le centre de gravité de la surface de la tôle d'obturation (26) recouvrant de toute part l'orifice d'échappment de la pompe est également pratiquement situé sur cette droite sécante (27) de la surface annulaire (18).
2. Soupape à lame élastique selon la revendication 1, avec une pièce d'appui servant à la fixation d'un côté de la bande soupape, caractérisée en ce que, en s'éloignant du point de fixation (21) vers l'orifice d'échappment (17), la pièce d'appui (20) se détache de la surface d'étanchéité (18) suivant une ligne d'allure continue.
3. Soupape à lame élastique selon la revendication 2, caractérisée en ce que la pièce d'appui (20) correspond sensiblement dans ses contours, en projection sur la surface d'étanchéité (18), aux contours extérieurs de la bande soupape (19), repose à plat sur l'extrémité de serrage (24) de la bande soupape (19), et se détache de la surface d'étanchéité (18), dans la zone de la languette élastique, avec un gradient de courbure qui est orienté sensiblement parallèlement à l'axe de symétrie (27), en une ligne d'allure continue, de sorte que l'écartement maximal par rapport à la surface d'étanchéité (18) se situe au-dessus de l'orifice d'échappement de pompe.
4. Soupape à lame élastique selon l'une des revendications précédentes, caractérisée en ce qu'une poche de nettoyage (30) est prévue dans la gorge annulaire (18), dans la zone de la surface d'appui, poche qui dépasse les deux bords de la soupape à lame élastique.
5. Soupape à lame élastique selon la revendication 4, caractérisée en ce que la poche de nettoyage (30) est disposée dans la zone de l'intersection (29) entre la partie de serrage courbée (24) et la partie droite (25) de la bande soupape (19).
6. Soupape à lame élastique selon la revendication 4 ou 5, caractérisée en ce que la dimension radiale de la poche de nettoyage (30) est inférieure à la largeur de la bande soupape (19), mesurée dans la même direction, de sorte que la bande soupape (19) appuie sur les bords de la poche de nettoyage (30), et en ce que la poche de nettoyage (30), vue en direction de l'axe de symétrie (27), dépasse en direction radiale la bande soupape (19), par chaque fois un évidement (34; 35), à son début (31) et à sa fin (32).
7. Soupape à lame élastique selon l'une des revendications 4 à 6, caractérisée en ce que la poche de nettoyage (30) s'étend à partir de l'intersection (29) entre la partie courbée (24) et la partie droite (25) de la bande soupape (19), en direction de l'orifice d'échappement (17), et se termine pratiquement au ras de l'intersection (29).
EP86108053A 1985-06-22 1986-06-12 Soupape à lame élastique pour la sortie d'une pompe Expired - Lifetime EP0206154B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3522338 1985-06-22
DE3522338 1985-06-22
DE3538765 1985-10-31
DE3538765 1985-10-31

Publications (3)

Publication Number Publication Date
EP0206154A2 EP0206154A2 (fr) 1986-12-30
EP0206154A3 EP0206154A3 (en) 1988-05-18
EP0206154B1 true EP0206154B1 (fr) 1990-04-04

Family

ID=25833330

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86108053A Expired - Lifetime EP0206154B1 (fr) 1985-06-22 1986-06-12 Soupape à lame élastique pour la sortie d'une pompe

Country Status (2)

Country Link
EP (1) EP0206154B1 (fr)
DE (1) DE3670129D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016210102A1 (de) * 2016-06-08 2017-12-14 Mahle International Gmbh Rückschlagventil für eine Vakuumpumpe

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624532A1 (de) * 1986-07-19 1988-02-04 Pierburg Gmbh Fluegelzellen- bzw. innen- und aussenlaeufer-pumpe
DE4019854B4 (de) * 1989-07-10 2004-09-16 Saurer Gmbh & Co. Kg Flügelzellen-Vakuumpumpe
ITMI20051008A1 (it) * 2005-05-30 2006-11-30 O M P Officine Mazzocco Pagnon Depressore per motore per autoveicoli e valvola di non ritorno per tale depresore
DE102007005216B4 (de) 2007-01-29 2015-07-30 Pierburg Gmbh Vakuumpumpe
ITTO20121023A1 (it) * 2012-11-28 2014-05-29 Vhit Spa Valvola a lamina flessibile

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB891313A (en) * 1959-07-29 1962-03-14 Bosch Gmbh Robert Improvements in or relating to a cylinder block of a pump embodying a vibratory valve assembly
US3606588A (en) * 1969-04-10 1971-09-20 Whirlpool Co Pressure equalizing means for compressors and the like
DE2754875A1 (de) * 1977-12-09 1979-06-13 Bosch Gmbh Robert Rueckschlagventil
GB2107789A (en) * 1981-10-14 1983-05-05 Allan Sinclair Miller Rotary positive-displacement fluid-machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016210102A1 (de) * 2016-06-08 2017-12-14 Mahle International Gmbh Rückschlagventil für eine Vakuumpumpe

Also Published As

Publication number Publication date
DE3670129D1 (de) 1990-05-10
EP0206154A3 (en) 1988-05-18
EP0206154A2 (fr) 1986-12-30

Similar Documents

Publication Publication Date Title
DE102005013085B3 (de) Ventil mit Rückschlagventil
DE69728300T2 (de) Spiralfluidummaschine
DE60133449T2 (de) Fluidfilter und ein Fluidfilter-Filterkopf-Gerät
DE3327453C2 (fr)
EP1154831B1 (fr) Filtre a liquide comprenant un element central demontable et un element de maintien supplementaire
DE19812312C2 (de) Drehmoment-Begrenzungsmechanismus
EP0382921B1 (fr) Clapet à lamelle
DE4430751A1 (de) Fluidkreislauf mit einem Hauptstromfilter
DE102006058980A1 (de) Flügelzellenpumpe
EP0761967A1 (fr) Bloc-carter hydraulique comprenant une pompe à piston
DE69923146T2 (de) Elektromagnetventil
EP0206154B1 (fr) Soupape à lame élastique pour la sortie d'une pompe
EP1000228B1 (fr) Valve de reaspiration des gaz du carter pour moteur a combustion interne
DE3100118A1 (de) Auslassventil
EP0248024B1 (fr) Frein a disque a garniture partielle pour vehicules a moteur
DE4024313C2 (fr)
DE2852852C2 (de) Kolbenpumpe, insbesondere Radialkolbenpumpe
EP0242722A1 (fr) Frein à disque, spécialement pour véhicules automobiles
DE3818651A1 (de) Gehaeuse in inline-bauart
DE3201011C2 (fr)
DE3903054A1 (de) Rotationskolbenverdichter
EP1342907B1 (fr) Système de soupape
DE1910285A1 (de) Betaetigungszylinder fuer eine hydraulische Bremsanlage
DE60207045T2 (de) Wasserdurchfluss- regelventil
DE19539266C2 (de) Ventilschaft-Dichtungsanordnung für Verbrennungskraftmaschinen

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FR GB IT

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FR GB IT

17P Request for examination filed

Effective date: 19880506

17Q First examination report despatched

Effective date: 19881024

ITF It: translation for a ep patent filed

Owner name: DE DOMINICIS & MAYER S.R.L.

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REF Corresponds to:

Ref document number: 3670129

Country of ref document: DE

Date of ref document: 19900510

ET Fr: translation filed
RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: BARMAG AG

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
ITTA It: last paid annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20010608

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20010621

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20010710

Year of fee payment: 16

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20020612

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030228

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20050612