DE2508677C3 - Snap ring lock - Google Patents

Snap ring lock

Info

Publication number
DE2508677C3
DE2508677C3 DE2508677A DE2508677A DE2508677C3 DE 2508677 C3 DE2508677 C3 DE 2508677C3 DE 2508677 A DE2508677 A DE 2508677A DE 2508677 A DE2508677 A DE 2508677A DE 2508677 C3 DE2508677 C3 DE 2508677C3
Authority
DE
Germany
Prior art keywords
snap ring
groove
shaft
ring
hub
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE2508677A
Other languages
German (de)
Other versions
DE2508677B2 (en
DE2508677A1 (en
Inventor
Fritz Ing.(Grad.) 7990 Friedrichshafen Leber
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.)
ZF Friedrichshafen AG
Original Assignee
ZF Friedrichshafen 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 ZF Friedrichshafen AG filed Critical ZF Friedrichshafen AG
Priority to DE2508677A priority Critical patent/DE2508677C3/en
Priority to GB6767/76A priority patent/GB1529015A/en
Priority to SE7602415A priority patent/SE417237B/en
Priority to FR7605490A priority patent/FR2302443A1/en
Publication of DE2508677A1 publication Critical patent/DE2508677A1/en
Publication of DE2508677B2 publication Critical patent/DE2508677B2/en
Application granted granted Critical
Publication of DE2508677C3 publication Critical patent/DE2508677C3/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • F16B21/183—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details internal, i.e. with spreading action
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B21/00—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings
    • F16B21/10—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts
    • F16B21/16—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft
    • F16B21/18—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details
    • F16B21/186—Means for preventing relative axial movement of a pin, spigot, shaft or the like and a member surrounding it; Stud-and-socket releasable fastenings by separate parts with grooves or notches in the pin or shaft with circlips or like resilient retaining devices, i.e. resilient in the plane of the ring or the like; Details external, i.e. with contracting action

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Description

Die Erfindung geht aus von einer Sprengringsicherung der im Oberbegriff des Anspruches 1 angegebenen und durch die US-PS 31 30 765 bekanntgewordenen ArtThe invention is based on a snap ring fuse as specified in the preamble of claim 1 and by the US-PS 31 30 765 known Art

Die US-PS 31 30 765 zeigt eine Sprengringsicherung an einer Wellen-Naben-Verbindung, bei welcher zwei in ihrem Durchmesser unterschiedliche Sprengringe axial nebeneinander liegend in entsprechend breiten Wellen und Nabennuten angeordnet sind und sich in diesen Nuten und gegenseitig axial abstützen, wobei die Reibungskräfte zwischen diesen Anlageflächen ein radiales Abheben verhindern sollen. Eine derartige Sprengringsicherung ist schwer montierbar, benötigt axial relativ viel Platz und ist des weitern für eine schnelldrehende, stoßbelastete Wellen-Naben-Verbindung nicht verwendbar, da die Reibungskräfte ein unter hohen Fliehkräften Sich-Öffnen der Ringe ausreichend verhindern können.The US-PS 31 30 765 shows a snap ring on a shaft-hub connection, in which two in Snap rings with different diameters lying axially next to one another in correspondingly wide waves and hub grooves are arranged and are axially supported in these grooves and one another, the Frictional forces between these contact surfaces are intended to prevent radial lifting. Such a one Snap ring locking is difficult to assemble, requires a relatively large amount of axial space and is also suitable for a high-speed, shock-loaded shaft-hub connection cannot be used because the frictional forces are too low high centrifugal forces can sufficiently prevent the rings from opening.

Zur axialen Sicherung einer schnell drehenden oder stoßbelasteten Wellen-Naben-Verbindung ist die Verwendung eines geteilten Ringes mit Bandage als Sicherung gegen radiales Abheben bekannt. Diese Sicherung ist umständlich, platzraubend und relativ teuer (ZF-Prospekt AK/S 6-65).The use of a split ring with bandage known as a safeguard against radial lift-off. These Securing is cumbersome, space-consuming and relatively expensive (ZF brochure AK / S 6-65).

Die Aufgabe der Erfindung besteht darin, Sprengringsicherungen der im Oberbegriff des Anspruches 1 angegebenen Art in soweit zu verbessern, daß bei geringem Platzbedarf, niedrigen Kosten und leichter Montierbarkeit noch besser als beim zu verbessernden Stand der Technik ein radiales Abheben des Sprengringes verhindert wird.The object of the invention is to provide snap ring fuses in the preamble of claim 1 to improve specified type in such a way that with a small footprint, low cost and lighter Mountability is even better than in the prior art to be improved, a radial lifting of the snap ring is prevented.

Zur Lösung dieser Aufgabe sind bei der Erfindung die im Kennzeichenteil des Anspruches 1 angegebenen Gestaltungsmerkmale vorgesehen, wobei noch in denTo solve this problem, those specified in the characterizing part of claim 1 are in the invention Design features provided, still in the

Unteransprüchen 2 und 3 für die Aufgabenlösung vorteilhafte und förderliche Weiterbildungen beansprucht werden.Dependent claims 2 and 3 claimed advantageous and beneficial developments for the solution of the problem will.

Die Erfindung ermöglicht es, auf einfache Weise eine Sprengringsicherung zu schaffen, und zwar durch die Verwendung eines zweiten Sprengringes, der über dem ersten Sprengring zum liegen kommt, wobei sich der erste Ring aus eigener Kraft oder durch eine hohe Drehzahl gezwungen auf dem Innendurchmesser des zweiten Ringes abstützt Dabei sind die Nuten für die beiden Ringe derart gefertigt daß der zweite Ring bei Montage leicht über den ersten Ring hinweg in seine Nut eingeführt werden kann. Dieses wird dadurch erreicht daß die Nut des ersten Sprengringes tiefer als normal ausgelegt wurde, so daß der erste Ring beim Einführen des zweiten um die Tiefe der Nut des zweiten Ringes in seiner Nut eintauchen kann.The invention makes it possible in a simple manner To create snap ring security, through the use of a second snap ring, which is above the first snap ring comes to rest, whereby the first ring by its own strength or by a high Forced speed is supported on the inner diameter of the second ring. The grooves are for the two rings made in such a way that the second ring when assembled easily over the first ring in his Groove can be introduced. This is achieved in that the groove of the first snap ring is deeper than normal, so that the first ring when inserting the second by the depth of the groove of the second Ring can dip in its groove.

Die Erfindung wird anhand von Ausführungsbeispielen im Zusammenhang mit der Zeichnung näher erläutert. Es zeigtThe invention is explained in more detail by means of exemplary embodiments in connection with the drawing explained. It shows

F i g. 1 eine axiale Draufsicht auf eine gesicherte Wellen-Naben-Verbindung in erster Ausführung.F i g. 1 shows an axial plan view of a secured shaft-hub connection in the first embodiment.

F i g. 2 einer« Schnitt (A-A) nach F i g. 1, die Lage der Ringe bei stillstehender Welle zeigend.F i g. 2 a «section (AA) according to FIG. 1, showing the position of the rings when the shaft is stationary.

Fig.3 einen Schnitt durch eine gesicherte Wellen-Naben-Verbindung in anderer Ausführung, die !.,age der Ringe zeigend.3 shows a section through a secured shaft-hub connection in another version, showing the!., age of the rings.

F i g. 4 denselben Schnitt wie in F i g. 3 mit fehlendem äußeren Sicherungsring.F i g. 4 the same section as in FIG. 3 with missing external circlip.

F i g. 5 das Einführen des Außenringes in dem Ausführungsbeispiel der Erfindung nach F i g. 3 und 4.F i g. 5 shows the introduction of the outer ring in the exemplary embodiment of the invention according to FIG. 3 and 4.

In den Zeichnungen stehen für gleiche Teile gleiche Bezugszeichen.In the drawings, the same reference symbols are used for the same parts.

Es sind 1 und 2 an sich bekannte Sprengringe für Wellen bzw. für Bohrungen, die in einer Welle 6 bzw. in der auf der Welle zu befestigenden Nabe 5 in ihren entsprechenden Nuten 3 bzw. 4 übereinander angeordnet sind. Dabei sind die Nuten und Ringquerschnitte derart bemessen, daß zwischen beiden in ihrer montierten Lage befindlichen Ringen ein Spalt im wesentlichen gleich der Tiefe der Nabennut 4 vorhanden ist.There are 1 and 2 circlips known per se for shafts or for bores that are in a shaft 6 and in the hub 5 to be fastened on the shaft is arranged one above the other in their corresponding grooves 3 and 4, respectively are. The grooves and ring cross-sections are dimensioned such that between the two in their In the assembled position there is a gap essentially equal to the depth of the hub groove 4 is available.

Bei der Montage werden der Sicherungsring 1 und danach der Sicherungsring 2 auf bekannte Weise in ihre Nuten eingeführt. Dreht sich nun die Welle mit einer hohen Drehzahl, und zeigt dabei der Sicherungsring 1 die Tendenz, sich radial abzuheben, wird er dieses nur um einen geringen Betrag können und dann am Sicherungsring 2 anstehen.During assembly, the locking ring 1 and then the locking ring 2 are in a known manner in their Grooves introduced. If the shaft is now rotating at a high speed, showing the locking ring 1 the tendency to stand out radially, he will only be able to do so by a small amount and then on Circlip 2 are in place.

Ein weiteres Ausführungsbeispiel der Erfindung zeigen F i g. 3 bis 5 der Zeichnung. Die Anordnung der Wellen- und Nabennut ist gleich wie bei dem ersten Ausführungsbeispiel. Der Unterschied besteht darin, daß anstelle des am Boden der Wellennut anliegenden Sicherungsringes 1 ein Sicherungsring 7 verwendet wird, der größer ist und nach seiner Montage am Innendurchmesser des Sicherungsringes 2 zur Anlage kommt (F i g. 3). Dadurch wird ein ständiges Sich-Öffnen und Schließen des inneren Sicherungsringes 1 vermieden, um eine höhere Lebensdauer zu erreichen. Bei der Montage wird zuerst der innere Sicherungsring 7 eingeführt (Fig.4), dann wird er in die Tiefe der Wellennut 3 hineingedrückt und gleichzeitig in Ring 2 über ihn hinweg geschoben (F i g. 5).Another embodiment of the invention is shown in FIG. 3 to 5 of the drawing. The arrangement of the Shaft and hub groove are the same as in the first embodiment. The difference is that instead of the locking ring 1 resting on the bottom of the shaft groove, a locking ring 7 is used which is larger and after its assembly on the inner diameter of the locking ring 2 to the plant comes (Fig. 3). This results in a constant opening and closing of the inner locking ring 1 avoided in order to achieve a longer service life. When assembling, the inner circlip is used first 7 is introduced (Fig.4), then he is in the depth of the Shaft groove 3 pressed in and at the same time pushed over it in ring 2 (Fig. 5).

Wenn nun der Ring 2 in seine Nut 4 einrastet, wird Ring 1 nachfedern, bis er am Ring 2 liegt (Fig. 3).If now the ring 2 snaps into its groove 4, ring 1 will spring back until it is on the ring 2 (Fig. 3).

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims (3)

Patentansprüche:Patent claims: 1. Sprengringsicherung an einer Wellen-Naben-Verbindung, insbesondere an einer schnelldrehenden oder stoßbelasteten Wellen-Naben-Verbindung, wobei zwei Sprengringe angeordnet sind, von denen der eine eine Sicherung für den anderen ist, dadurch gekennzeichnet, daß der erste Sprengring (1, 7) radial innen nur in der Wellennut (3) und der zweite Sprengring (2) radial außen nur in der Nabennut (4) angeordnet ist, wobei die Wellennut (3) so tief ausgeführt ist, daß der erste Sprengring (1, 7') beim Einführen des zweiten Sprengringes (2) um die Tiefe der Nabennut (4) in der Wellennut (3) eintauchen kann.1. Snap ring securing device on a shaft-hub connection, especially on a fast-rotating one or shock-loaded shaft-hub-connection, whereby two snap rings are arranged, of which one is a backup for the other, characterized in that the first Snap ring (1, 7) radially inside only in the shaft groove (3) and the second snap ring (2) radially outside only in the hub groove (4) is arranged, wherein the shaft groove (3) is designed so deep that the first Snap ring (1, 7 ') when inserting the second snap ring (2) by the depth of the hub groove (4) in the shaft groove (3) can be immersed. 2. Sprengringsicherung nach Anspruch 1, dadurch gekennzeichnet, daß der erste Sprengring (1) am Nutenboden (3) anliegt, und daß zwischen den beiden Ringen (1, 7; 2) ein Spalt im wesentlichen gleich oder etwas größer als die Tiefe der Naben vorhanden ist2. Snap ring fuse according to claim 1, characterized in that the first snap ring (1) on Groove bottom (3) rests, and that between the two rings (1, 7; 2) there is essentially a gap is equal to or slightly greater than the depth of the hubs 3. Sprengringsicherung nach Anspruch 1 und 2, dadurch gekennzeichnet, daß der erste Sprengring (7) im Innendurchmesser des zweiten Sprengringes (2) federnd anliegt, und daß zwischen dem ersten Sprengring (7) und dem Boden der Wellennut (3) ein Spalt im wesentlichen gleich oder etwas größer als die Tiefe der Nabennut (4) vorhanden ist.3. Snap ring fuse according to claim 1 and 2, characterized in that the first snap ring (7) in the inner diameter of the second snap ring (2) rests resiliently, and that between the first Snap ring (7) and the bottom of the shaft groove (3) a gap substantially equal to or slightly larger than the depth of the hub groove (4) is available.
DE2508677A 1975-02-28 1975-02-28 Snap ring lock Expired DE2508677C3 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE2508677A DE2508677C3 (en) 1975-02-28 1975-02-28 Snap ring lock
GB6767/76A GB1529015A (en) 1975-02-28 1976-02-20 Shaft and hub assembly
SE7602415A SE417237B (en) 1975-02-28 1976-02-25 CIRCUIT FOR LASRING
FR7605490A FR2302443A1 (en) 1975-02-28 1976-02-27 SPRING RINGS, ESPECIALLY FOR SHAFTS AND HUBS

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2508677A DE2508677C3 (en) 1975-02-28 1975-02-28 Snap ring lock

Publications (3)

Publication Number Publication Date
DE2508677A1 DE2508677A1 (en) 1976-09-09
DE2508677B2 DE2508677B2 (en) 1978-09-21
DE2508677C3 true DE2508677C3 (en) 1979-05-10

Family

ID=5940036

Family Applications (1)

Application Number Title Priority Date Filing Date
DE2508677A Expired DE2508677C3 (en) 1975-02-28 1975-02-28 Snap ring lock

Country Status (4)

Country Link
DE (1) DE2508677C3 (en)
FR (1) FR2302443A1 (en)
GB (1) GB1529015A (en)
SE (1) SE417237B (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302075A1 (en) * 2003-01-21 2004-07-29 Zf Friedrichshafen Ag Arrangement for the safety of a snap ring
DE102004001377A1 (en) * 2004-01-09 2005-08-04 Zf Friedrichshafen Ag Circlip lock for shaft circlip, has spring holder to connect clip halves, where holder intervenes in fissure between pushes of circlip and in recess of internal gear carrier for locking clip to circlip in radial and axial directions
DE102007023125A1 (en) 2007-05-16 2008-11-20 Zf Friedrichshafen Ag planetary gear
DE102012216459B3 (en) * 2012-09-14 2014-01-30 Deere & Company Axial fixing arrangement for rotating body mounted on shaft, has shaft driven around rotational axis for transmitting torque, where rotating body is fixed on shaft and is held axially in longitudinal direction by retaining element
DE102004001378B4 (en) * 2004-01-09 2018-10-31 Zf Friedrichshafen Ag Retaining ring securement

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182579A (en) * 1977-12-23 1980-01-08 Ramsey Corporation Retaining ring
DE3223994C2 (en) * 1982-06-26 1985-02-07 Walter 7257 Ditzingen Bauer Axial locking element
GB2290812B (en) * 1994-07-01 1998-04-15 Petroleum Eng Services Release mechanism for down-hole tools
DE102004014112A1 (en) * 2004-03-23 2005-10-13 Zf Friedrichshafen Ag Plate carrier with snap ring
DE102005007384A1 (en) * 2005-02-18 2006-08-31 Zf Friedrichshafen Ag Arrangement for the axial support of two rotating components
DE102007023953B4 (en) 2007-05-23 2016-02-04 Zf Friedrichshafen Ag Planetary gear with a multi-plate clutch or a multi-disc brake
DE102007026415A1 (en) 2007-06-06 2008-12-11 Zf Friedrichshafen Ag Circlip with at least one conical flank, to fit into a ring groove with a conical flank, is held in place by a radial lock on its upper side
WO2009032135A1 (en) * 2007-08-31 2009-03-12 Caterpillar Inc. Drive assembly having failure containment feature
DE202007014997U1 (en) 2007-10-27 2008-02-14 Ifa-Technologies Gmbh Circlip securing to a shaft-hub connection
JP2009197991A (en) * 2008-02-25 2009-09-03 Yamaha Motor Co Ltd Friction clutch
GB2485790A (en) 2010-11-23 2012-05-30 Avalon Sciences Ltd Retaining ring
CN104595320B (en) * 2015-01-30 2016-10-26 上海电气凯士比核电泵阀有限公司 A kind of axial positioning component with interior fit clearance and axially localization method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE483856A (en) * 1948-06-15
DE2215041C3 (en) * 1971-03-29 1982-04-29 Karl Gustav Einar Partille Derman Securing and sealing element
US3888597A (en) * 1972-02-24 1975-06-10 Int Harvester Co Retaining assembly

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10302075A1 (en) * 2003-01-21 2004-07-29 Zf Friedrichshafen Ag Arrangement for the safety of a snap ring
DE102004001377A1 (en) * 2004-01-09 2005-08-04 Zf Friedrichshafen Ag Circlip lock for shaft circlip, has spring holder to connect clip halves, where holder intervenes in fissure between pushes of circlip and in recess of internal gear carrier for locking clip to circlip in radial and axial directions
DE102004001378B4 (en) * 2004-01-09 2018-10-31 Zf Friedrichshafen Ag Retaining ring securement
DE102007023125A1 (en) 2007-05-16 2008-11-20 Zf Friedrichshafen Ag planetary gear
DE102007023125B4 (en) * 2007-05-16 2016-10-13 Zf Friedrichshafen Ag planetary gear
DE102012216459B3 (en) * 2012-09-14 2014-01-30 Deere & Company Axial fixing arrangement for rotating body mounted on shaft, has shaft driven around rotational axis for transmitting torque, where rotating body is fixed on shaft and is held axially in longitudinal direction by retaining element

Also Published As

Publication number Publication date
DE2508677B2 (en) 1978-09-21
FR2302443B1 (en) 1981-05-08
SE7602415L (en) 1976-08-29
GB1529015A (en) 1978-10-18
SE417237B (en) 1981-03-02
FR2302443A1 (en) 1976-09-24
DE2508677A1 (en) 1976-09-09

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
8327 Change in the person/name/address of the patent owner

Owner name: ZF FRIEDRICHSHAFEN AG, 7990 FRIEDRICHSHAFEN, DE

8339 Ceased/non-payment of the annual fee