GB2223066A - Rectilinear motion bearing assembly - Google Patents
Rectilinear motion bearing assembly Download PDFInfo
- Publication number
- GB2223066A GB2223066A GB8919589A GB8919589A GB2223066A GB 2223066 A GB2223066 A GB 2223066A GB 8919589 A GB8919589 A GB 8919589A GB 8919589 A GB8919589 A GB 8919589A GB 2223066 A GB2223066 A GB 2223066A
- Authority
- GB
- United Kingdom
- Prior art keywords
- support member
- bolt
- inner ring
- bearing inner
- facing abutment
- 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.)
- Granted
Links
- 238000005096 rolling process Methods 0.000 claims description 5
- 238000007789 sealing Methods 0.000 claims description 5
- 230000000717 retained effect Effects 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910000760 Hardened steel Inorganic materials 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/002—Elastic or yielding linear bearings or bearing supports
-
- 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
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C29/00—Bearings for parts moving only linearly
- F16C29/04—Ball or roller bearings
- F16C29/045—Ball or roller bearings having rolling elements journaled in one of the moving parts
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Bearings For Parts Moving Linearly (AREA)
- Support Of The Bearing (AREA)
Description
2'23066 .I- APPARATUS COMPRISING A SUPPORT MEMBER, ROLLERS MOUNTED ON THE
SUPPORT MEMBER AND A GUIDE RAIL IN ROLLING CONTACT WITH THE ROLLERS The present invention relates to apparatus comprising a support member, rollers mounted on the support member and a guide rail supported in rolling contact with the rollers and for movement with respect to the support member.
US-A-3998497 and DE-A-2530907 disclose an assembly of the type indicated in which the rollers are mounted on a bolt which is secured to the support member. This bolt has to be arranged radially displaceable for the positioning of the rollers relative to the associated track of the guide rail. However, a positioning movement of this type for the bolt is only achieved with expensive adjusting members.
DE-U-8601141 discloses an assembly in which the positioning of the pin of at least one of the rollers has to be effected by an eccentric bush. The known method is expensive because of the complicated manufacture of the eccentric bush and correspondingly elaborate adjustment of this bush. Moreover, the roller in this known assembly can be positioned only with difficulty with a given preloading relative to the associated track of the rail.
The subject of this invention is apparatus of the aforementioned type, in which the rollers can be secured simply to the support member so that they press against the guide rail with a certain amount of preloading.
In one aspect the invention provides apparatus comprising a support member, rollers mounted on the support member and a guide rail, wherein at least one roller has a bearing inner ring which is secured to the support member by means of a bolt passing axially through the bearing inner ring, characterised in that at least one radially resiliently flexible member is disposed between the bolt and the bearing inner ring of the roller.
In another aspect the invention provides apparatus comprising a support member, rollers mounted on the support member and a guide rail supported in rolling contact with the rollers and for movement with respect to the support member, at least one roller has a bearing inner ring and is rotatably mounted on a shaft which extends through the bore of the ring and is secured to the support member, wherein a radially resilient member is disposed between the shaft and the bearing inner ring of the said roller.
The apparatus of the invention enables the bearing inner ring, which is supported on the support member so as to be displaceable in radial direction, to be shifted radially against the elasticity of, for example, a spring ring when the guide rail is applied. The roller is thus positioned and preloaded under corresponding preloading against the associated track on the guide rail.
In the preloaded condition, the shaft or bolt can be securely connected to the support member. The bearing inner ring is thus secured in its specified position on the support member.
An advantage of the apparatus according to the invention lies in the fact that simply produced bolts and spring members can be used for securing the rollers.
is The magnitude of the elastic deformation of the spring member or members is determined by the radial displacement of the roller during installation of the guide rail, for example when introducing the guide rail between opposing rollers. This deformation is substantially independent of the production tolerances in the rail and rollers. The fastening of the roller can be undertaken with tightening forces of the bolt which can be of any magnitude desired, without the degree of preloading of the roller on the guide rail being varied.
Moreover, the degree of preloading of the roller does not vary even when the latter is demounted and subsequently re-installed.
The radially resilient member may be a sealing ring of rubber or a thinwalled spring plate ring having resiliently deformable corrugations.
The bearing inner ring is preferably clamped between abutment shoulders.
Preferably, the bearing inner ring of the roller is secured on a clamping surface of the support member by screwing a simple screw-threaded bolt into the threaded hole of the support member.
With this fastening at least one radially resiliently flexible member is introduced between the bolt and the bearing inner ring. subsequently, the screw-threaded end of the bolt is initially screwed only partly into the screw-threaded hole of the support member so that the bearing inner ring is guided so as to slide in radially displaceable manner between the inwardly facing abutment shoulder of the head end of the bolt.
The guide rail is then installed so that the bearing inner ring is shifted radially to a small extent against the elasticity of the spring member and the roller is correspondingly pressed under a given preloading against the associated track of the guide rail.
Finally, the screw-threaded end of the bolt is screwed fully into the screw-threaded hole of the support member so that the bearing inner ring is clamped between the inwardly facing and outwardly facing abutment shoulders.
In the accompanying drawings:
Figure 1 shows a longitudinal section through an apparatus with rollers and a guide rail disposed therebetween; Figure 2 shows an enlarged longitudinal section through part of the apparatus illustrated in Figure 1 but after the screw-threaded end of a bolt has been partly screwed into the screw-threaded hole of a support member; Figure 3 shows an enlarged longitudinal section through part of the apparatus illustrated in Figure 1 but after a guide rail has been introduced between the two rollers illustrated in Figure 1; - 5 Figure 4 shows an enlarged longitudinal section through part of the apparatus illustrated in Figure 1 but after the screw-threaded end of the bolt has been fully screwed into the screw-threaded hole of the support member; Figure 5 shows a longitudinal section through part of a modified apparatus with a guide rail, and Figure 6 shows an end view of the spring ring illustrated in Figure 5, in the demounted condition.
In Figure 1, rollers 1 and 2 of one pair of rollers are arranged on opposite sides of a guide rail 3. The guide rail 3 is securely connected by screws 4 to a carriage member 5 which moves in reciprocating motion with the guide rail 3.
Each roller 1, 2 is in the form of an outer ring of a double-row angularcontact ball bearing with a bearing inner ring 6. The lines of force action of the two rows of balls of this angular-contact ball bearing extend inwardly divergent. The circumferential surface of each roller 1, 2 has a peripheral groove 7. Each roller 1, 2 is mounted radially and axially on its bearing inner ring 6.
The two rollers 1 and 2 are situated opposite one another transversely to the guide rail 3 and roll with their peripheral grooves 7 on respective linearly extending tracks 8 and 9 of the guide rail 3. The two tracks 8 and 9 extend parallel to one another and have convergent sides in crosssection. Each track 8, 9 projects into the opposing peripheral groove 7 of the respective roller 1, 2. In the present case the guide rail 3 is so designed that the two tracks 8 and 9 point away from one another.
The bearing inner ring 6 of each roller 1, 2 is secured by a bolt 10 on the flat clamping surface 11 of a support member in the form of a mounting plate 12. The bolt 10 has a shank 13, which passes through the bore of the bearing inner ring 6, a head end 14 and a screw-threaded end 15.
The shank 13 incorporates two peripheral grooves which are longitudinally spaced from each other and in each of which a radially resiliently flexible spring ring is snap fitted, namely a rubber sealing ring 16. Each spring ring 16 is seated under radial loading between the shank 13 and the bore of the bearing inner ring 6.
In the condition in which the rollers 1 and 2 are fully secured on the mounting plate 12 (see Figure 4) the bolt 10 is screwed with its screwthreaded end to such an extent into a screw-threaded hole 17 of the mounting plate that the bearing inner ring 6 is clamped between an axially inward facing abutment shoulder 18 of the head end 14 and an opposing axially outward facing abutment shoulder 19 of the mounting plate 12 and is thus located by frictional resistance.
The inward facing abutment shoulder 18 is formed by an axially resiliently flexible conical spring which is threaded on to the shank 13 and which is fitted between the head end 14 of the bolt 10 and the opposing flat end face of the bearing inner ring 6.
The outward facing abutment shoulder 19 is J.
1 J similarly formed by a conical spring which is threaded on to the shank 13 and which is inserted between the clamping surface 11 and the flat end face of the bearing inner ring 6 opposite thereto.
The two rollers 1 and 2 of each pair of rollers are situated opposite one another in such a way that their rolling contacts with the respective tracks 8 and 9 lie in a plane which includes the axis 20 of the bolt 10 of each of the two rollers 1 and 2.
The fastening of the rollers on the mounting plate 12 is effected by:
fitting each roller 1, 2 with its bearing inner ring 6 and with the two abutment shoulders 18 and 19 on the shank 13 of the bolt 10, two spring rings 16 being inserted as a radially resiliently flexible spring means between the shank 13 and the bearing inner ring 6; screwing the screw-threaded end 15 of the bolt 10 partly into the screw- threaded hole 17, so that the bearing inner ring 6 is guided to slide radially displaceably, under slight axial preloading, between the inwardly facing abutment shoulder 18 and the outwardly facing abutment shoulder 19, each roller 1, 2 thus having a slight clearance 21 from the clamping surface 11 of the mounting plate 12 (Figure 2); inserting the guide rail 3 between opposing rollers 1 and 2 so that the bearing inner ring 6 of the roller 1 is shifted radially against the elasticity of the. sealing ring 16 in the direction of the arrow 22 (Figure 3), so that the two opposing rollers 1 and 2 of each pair of rollers bear against the respective tracks 8 and 9 under a given preloading, and screwing the screw-threaded end 15 of the bolt 10 completely into the hole 17, so as to clamp the bearing inner ring 6 at its flat end faces between the outwardly facing abutment shoulder 19 and the inwardly facing abutment shoulder 18. Both the outwardly facing and inwardly facing abutment shoulders 19 and 18 are pressed completely flat, so that the bearing inner ring 6 is located inflexibly and by frictional resistance at the two abutment shoulders 18 and 19. The rollers 1 and 2 are thus disposed at a small distance 23 (Figure 4) from the clamping surface 11. The thickness of the outwardly facing abutment shoulder 19 corresponds exactly to this distance 23.
Figure 5 illustrates a modified apparatus.
The spring ring in this assembly is formed (Figure 6) by a thin-walled spring plate ring 25 provided with longitudinally extending corrugations 24. The corrugations 24 yield in flexibly resilient manner when the guide rail 3 is introduced between the two opposing rollers 1 and 2 and the bearing inner ring 6 is accordingly shifted radially against the elasticity of this spring plate ring 25.
The inwardly facing abutment shoulder 18 is again formed by a conical spring which is threaded on the shank 13 and which, in the condition in which the roller 1, 2 is secured to the mounting plate 12, is pressed inflexibly flat.
In the present case the outwardly facing annular -1 t plate-type abutment shoulder 19 has a projection 26 which protrudes in the direction of the bearing inner ring 6 and which engages with radial clearance in a lateral recess 27 in the bearing inner ring 6, which recess is bound in peripheral direction. This abutment shoulder 19 additionally has a projection 28 which engages in form-locking manner in a recess 29 drilled in the clamping surface 11. In this way the outwardly facing abutment shoulder 19 is connected to the mounting plate 12 so as to be constrained to rotate therewith. After the partial screwing-in of the screw-threaded end 15 into the hole 17 in the mounting plate 12, the bearing inner ring 6 is located on the abutment shoulder 19 in a manner precluding relative rotation but can be displaced to some extent in the radial direction between the inwardly facing abutment shoulder 18 and the outwardly facing abutment shoulder 19.
Both rollers 1 and 2 are again in the form of an outer ring of a doublerow angular-contact ball bearing with associated bearing inner ring 6. The two rollers 1 and 2 are also situated opposite one another so that their rolling contacts with the respective tracks 8 and 9 lie on a plane in which lies the axis 20 of the bolt 10 of both rollers 1 and 2.
The tracks of the rail 3 are formed by circular rods 30 consisting of hardened steel, which are secured in longitudinal recesses of the rail 3.
The fastening of the rollers illustrated in Figure 5 to the mounting plate 12 along the rail 3 takes place analogously to the previously described case.
- 10 A rail 31 of U-shaped cross-section (as illustrated in chain lines in Figure 1) can be used, in which the pairs of rollers are disposed between two parallel, inwardly facing tracks of the rail.
The tracks of the guide rail do not have to extend linearly but they can also extend in a circular segment and parallel to one another, so that the relevant rail can then serve as a bearing member for a centreless swivel bearing.
In addition to the sealing rings 16 illustrated in Figure 1, the spring plate ring 25 shown in Figure 5 can be accommodated between the two spring rings 16 so that a combined spring ring is seated on the shank of the relevant bolt, which spring ring has particularly good vibration- damping properties.
The spring elements do not need to be of annular shape; namely, they may also be provided as resiliently flexible segments of rubber or the like between the bolt and the bearing inner ring of the roller.
1 r 1 1 - 11
Claims (12)
1. Apparatus comprising a support member (12), rollers (1, 2) mounted on the support member (12) and a guide rail (3), wherein at least one roller (1,2) has a bearing inner ring (6) which is secured to the support member (12) by means of a bolt (10) passing axially through the bearing inner ring, characterised in that at least one radially resiliently flexible member (16,25) is disposed between the bolt (10) and the bearing inner ring (6) of the roller (1,2).
2. Apparatus according to claim 1, characterised in that the resiliently flexible member is formed by a sealing ring (16) of rubber threaded on to the bolt (10).
3. Apparatus according to Claim 1, characterised in that the resiliently flexible member is formed by a thin-walled spring plate ring (25) threaded on to the bolt (10) and provided with corrugations (24) which are deformable in flexibly resiliently manner in radial direction.
4. Apparatus according to any one preceding Claim, characterised in that the bearing inner ring (6) is clamped between an axially inward facing abutment shoulder (18) connected with the bolt (10) and an axially outward facing abutment shoulder (19) connected with the support member (12).
5. Apparatus according to Claim 4, characterised in that the bolt (10) has a head end (14) connected with the inward facing abutment shoulder (18) and a screw-theaded end (15) which is screwed into a is screw-threaded hole (17) of the support member (12).
6. Apparatus according to Claim 5, characterised in that the outward facing abutment shoulder (19) of the support member (12) and/or the inward facing abutment shoulder (18) of the bolt (10) is formed by at least one conical spring (18,19) which is threaded on to the shank (13) of the bolt (10) and which can be tensioned resiliently in axial direction by screwing the bolt (10) into the hole (17) of the support member (12).
Apparatus according to Claim 6, characterised in that, in the condition in which the screw-threaded end (15) of the bolt (10) is screwed into the hole (17) of the support (12), each conical spring (18,19) of the bolt (10) is pressed completely flat.
8. Apparatus according to any one of Claims 4 to 7, characterised in that the bearing inner ring (6) is located by frictional resistance between the inward facing abutment shoulder (18) and the outward facing abutment shoulder (19).
9. Apparatus according to any one of Claims 4 to 8, characterised in that the bearing inner ring (6) is retained, in a manner precluding independent rotation, by at least one projection (26) of the inward facing abutment shoulder (18) of the bolt (10) and/or of the outward facing abutment shoulder (19) of the support member (12), which projection eng ageswith radial clearance in a recess (27) of the bearing inner ring (6).
10. An assembly according to any one of Claims 4 to 9, characterised in that the outward facing abutment :p shoulder (19) has at least one projection (28) engaging in a recess (29) of the support member (12).
11. Apparatus comprising a support member, rollers mounted on the support member, and a guide rail supported in rolling contact with the rollers and for movement with respect to the support member, at least one roller has a bearing inner ring and is rotatably mounted on a shaft which extends through the bore of the ring and is secured to the support member, wherein a radially resilient member is disposed between the shaft and the bearing inner ring of the said roller.
is
12. Apparatus substantially as herein described with reference to and as shown in the accompanying drawings.
PUbl1thed 1990 ztThe Patent OfMcs, State Hou". 867 t F-1411 HWbQrnIA3rdon WCIR 4TP- Pirthsr copies znay be ob-nedfrom The Patantogaeg. Siaos Branch. St Mary Cray, OrpLzigton, Kynt BR5 3RD. Printed by Multiplex techxilques Itd. St Uary Cray, Kent. Con. 1. 87
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19883829276 DE3829276C2 (en) | 1988-08-30 | 1988-08-30 | Arrangement for positioning rollers arranged on a support body |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| GB8919589D0 GB8919589D0 (en) | 1989-10-11 |
| GB2223066A true GB2223066A (en) | 1990-03-28 |
| GB2223066B GB2223066B (en) | 1992-08-26 |
Family
ID=6361816
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB8919589A Expired - Lifetime GB2223066B (en) | 1988-08-30 | 1989-08-30 | Apparatus comprising a support member, rollers mounted on the support member and a guide rail in rolling contact with the rollers |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE3829276C2 (en) |
| GB (1) | GB2223066B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2315103A (en) * | 1996-07-10 | 1998-01-21 | Schaeffler Waelzlager Kg | Linear bearing arrangement |
| US6158891A (en) * | 1997-05-27 | 2000-12-12 | Deutsche Star Gmbh | Traveller assembly for a linear guiding device |
| EP2578893A1 (en) * | 2010-06-01 | 2013-04-10 | NSK Ltd. | Sliding device |
Families Citing this family (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE9016625U1 (en) * | 1990-12-07 | 1991-02-28 | Nadella-Waelzlager Gmbh, 7000 Stuttgart | Carriage for moving along a rail with curved rail segments |
| IT1258778B (en) * | 1992-01-16 | 1996-02-29 | FREE PIN WITH CONICAL ROLLING BODIES | |
| FR2700322B1 (en) * | 1993-01-11 | 1995-02-24 | Productique Cie Generale | Precision guidance system for a mobile along two sliding rails of circular section. |
| DE9308306U1 (en) * | 1993-06-03 | 1993-07-29 | Skf Linearsysteme Gmbh, 97424 Schweinfurt | Arrangement for positioning rollers against a guide rail |
| DE4324059A1 (en) * | 1993-07-17 | 1995-01-19 | Manfred Artkaemper | Guide element for slide guides and a slide guide |
| DE19517926A1 (en) * | 1995-05-16 | 1996-11-21 | Schaeffler Waelzlager Kg | Linear roller bearing using fixer screws |
| DE29514271U1 (en) * | 1995-09-06 | 1995-11-16 | AVOLA Maschinenfabrik A. Volkenborn GmbH & Co KG, 45527 Hattingen | Linear guide |
| DE19631437A1 (en) * | 1996-08-03 | 1998-02-05 | Schaeffler Waelzlager Kg | Twin-row bearings support shaft within housing, housing support ring |
| DE19750126A1 (en) * | 1997-11-13 | 1999-05-20 | Schaeffler Waelzlager Ohg | Linear bearing arrangement |
| DE19902048B4 (en) * | 1999-01-20 | 2011-06-16 | Franke & Heydrich Kg | Rolling / Wälzführung for supporting moving at different speeds machine parts, especially for linear guides |
| DE10340672B4 (en) * | 2003-09-04 | 2011-04-28 | Ab Skf | linear guide |
| EP1748200A1 (en) | 2005-07-27 | 2007-01-31 | Güdel Group Ag | Linear guide |
| DE102010008232B4 (en) * | 2010-02-11 | 2011-11-24 | Holzma Plattenaufteiltechnik Gmbh | Tool trolley for a plate processing plant, and wheel for supporting a base part of such a tool carriage |
| DE102010024202A1 (en) | 2010-06-17 | 2011-12-22 | Schaeffler Technologies Gmbh & Co. Kg | Roller guide for mounting guide car at guide rail over roller, has roller profile formed at guide path of guide rail at outer circumference of roller |
| CN102537042A (en) * | 2012-02-22 | 2012-07-04 | 威海利奥泰儆自动化设备有限公司 | Simple and easy aluminium base roller guide rail pair |
| CN104632882B (en) * | 2015-01-16 | 2017-02-22 | 顾康明 | Guiding rail sliding block bearing and processing technology thereof |
| CN107956797B (en) * | 2017-12-18 | 2023-11-07 | 西南交通大学 | Self-contact type sliding block device |
| DE102018112367A1 (en) * | 2018-05-23 | 2019-11-28 | Technische Universität Darmstadt | linear guide |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1090087A (en) * | 1965-04-09 | 1967-11-08 | Herman Rudolf Zeidler | Shaft supporting devices |
| US3998497A (en) * | 1974-07-11 | 1976-12-21 | Ricoh Co., Ltd. | Guide rod apparatus |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2992868A (en) * | 1958-05-07 | 1961-07-18 | Vacha Fred | Mounting sleeve |
| US3709049A (en) * | 1970-09-08 | 1973-01-09 | Metron Corp | Non-slip linear to rotary motion conversion apparatus |
| DE8601141U1 (en) * | 1986-01-18 | 1986-03-13 | Bergische Stahl-Industrie, 5630 Remscheid | Roller guide |
-
1988
- 1988-08-30 DE DE19883829276 patent/DE3829276C2/en not_active Expired - Fee Related
-
1989
- 1989-08-30 GB GB8919589A patent/GB2223066B/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1090087A (en) * | 1965-04-09 | 1967-11-08 | Herman Rudolf Zeidler | Shaft supporting devices |
| US3998497A (en) * | 1974-07-11 | 1976-12-21 | Ricoh Co., Ltd. | Guide rod apparatus |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2315103A (en) * | 1996-07-10 | 1998-01-21 | Schaeffler Waelzlager Kg | Linear bearing arrangement |
| GB2315103B (en) * | 1996-07-10 | 1999-10-20 | Schaeffler Waelzlager Kg | Linear bearing arrangement |
| US6158891A (en) * | 1997-05-27 | 2000-12-12 | Deutsche Star Gmbh | Traveller assembly for a linear guiding device |
| EP2578893A1 (en) * | 2010-06-01 | 2013-04-10 | NSK Ltd. | Sliding device |
| EP2578893A4 (en) * | 2010-06-01 | 2014-02-12 | Nsk Ltd | Sliding device |
| US8827560B2 (en) | 2010-06-01 | 2014-09-09 | Nsk Ltd. | Slide device |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3829276C2 (en) | 1998-02-19 |
| GB2223066B (en) | 1992-08-26 |
| GB8919589D0 (en) | 1989-10-11 |
| DE3829276A1 (en) | 1990-03-08 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 20060830 |