GB2102061A - Windscreen wiper linkage ball and socket joint assembly - Google Patents
Windscreen wiper linkage ball and socket joint assembly Download PDFInfo
- Publication number
- GB2102061A GB2102061A GB08119460A GB8119460A GB2102061A GB 2102061 A GB2102061 A GB 2102061A GB 08119460 A GB08119460 A GB 08119460A GB 8119460 A GB8119460 A GB 8119460A GB 2102061 A GB2102061 A GB 2102061A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ball
- socket joint
- windscreen wiper
- joint assembly
- wiper linkage
- 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
- 229920001577 copolymer Polymers 0.000 claims abstract description 11
- DHKHKXVYLBGOIT-UHFFFAOYSA-N acetaldehyde Diethyl Acetal Natural products CCOC(C)OCC DHKHKXVYLBGOIT-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 238000001746 injection moulding Methods 0.000 claims abstract description 6
- 239000000314 lubricant Substances 0.000 claims abstract description 6
- -1 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims abstract description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims abstract description 5
- 239000004952 Polyamide Substances 0.000 claims abstract description 4
- 229910052751 metal Inorganic materials 0.000 claims abstract description 4
- 239000002184 metal Substances 0.000 claims abstract description 4
- 229920002647 polyamide Polymers 0.000 claims abstract description 4
- 239000011521 glass Substances 0.000 claims description 4
- 229920002994 synthetic fiber Polymers 0.000 claims 1
- 239000003365 glass fiber Substances 0.000 abstract description 4
- 230000000712 assembly Effects 0.000 description 10
- 238000000429 assembly Methods 0.000 description 10
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229920005176 Hostaform® Polymers 0.000 description 2
- JHWNWJKBPDFINM-UHFFFAOYSA-N Laurolactam Chemical compound O=C1CCCCCCCCCCCN1 JHWNWJKBPDFINM-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 229920000299 Nylon 12 Polymers 0.000 description 2
- 229920006099 Vestamid® Polymers 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920005240 HOSTAFORM® C 9021 TF Polymers 0.000 description 1
- 241000428199 Mustelinae Species 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60S—SERVICING, CLEANING, REPAIRING, SUPPORTING, LIFTING, OR MANOEUVRING OF VEHICLES, NOT OTHERWISE PROVIDED FOR
- B60S1/00—Cleaning of vehicles
- B60S1/02—Cleaning windscreens, windows or optical devices
- B60S1/04—Wipers or the like, e.g. scrapers
- B60S1/06—Wipers or the like, e.g. scrapers characterised by the drive
- B60S1/16—Means for transmitting drive
- B60S1/18—Means for transmitting drive mechanically
- B60S1/24—Means for transmitting drive mechanically by rotary cranks
-
- 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
- F16C11/00—Pivots; Pivotal connections
- F16C11/04—Pivotal connections
- F16C11/06—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints
- F16C11/0619—Ball-joints; Other joints having more than one degree of angular freedom, i.e. universal joints the female part comprising a blind socket receiving the male part
-
- 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
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/02—Parts of sliding-contact bearings
- F16C33/04—Brasses; Bushes; Linings
- F16C33/20—Sliding surface consisting mainly of plastics
- F16C33/201—Composition of the plastic
-
- 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
- F16C2326/00—Articles relating to transporting
- F16C2326/01—Parts of vehicles in general
- F16C2326/09—Windscreen wipers, e.g. pivots therefore
Abstract
In a windscreen wiper linkage ball and socket joint assembly 24, a socket portion 26 is formed from a mouldable non-metallic synthetic composition, such as glass-fibre filled synthetic polyamide, and a ball portion 28 is formed by injection-moulding about a knurled shank 34 of a metal pin 30 an acetal copolymer containing polytetrafluoroethylene dispersed therein a bearing lubricant material. <IMAGE>
Description
SPECIFICATION
Windscreen wiper linkage ball and socket joint assembly
This invention relates to windscreen wiper linkage ball and socket joint assemblies, and, in particular, to windscreen wiper linkage ball and socket joint assemblies in which the socket portion of the assembly is formed from a synthetic mouldable non-metallic composition.
It is customary for windscreen wiper assemblies of motor vehicles to comprise at least two windscreen wiper blades carried on separate pivoted arms which are connected to a common windscreen wiper motor by a system of linkages involving a number of ball and socket universal joints. Such linkages are almost invariably housed in locations in motor vehicles such that the linkage joints are relatively inaccessible. Consequently it is essential that these linkage joints can function for protracted periods with a minimum of maintenance.
Windscreen wiper linkage ball and socket joint assemblies having a long service life are known, in which the socket portion of the assembly is formed from a synthetic mouldable non-metallic composition, such as a glass fibre-reinforced nonmetallic polyamide material. One such material is a 30% glass fibre-filled Nylon 12 sold by Vestamid under the trade designation L-1930 Black 97503.
The ball portion customarily used with such a nonmetallic socket is made of steel. It has been found that such non-metallic sockets are very hard and very stable dimensionally, but that, during use, the glass fibre filler tends to wear away to form a glass powder within the joint which can severely abrade an untreated steel ball portion. To overcome this effect, the steel ball portion is machined to a very high finish, a very hard electroless nickel coating is deposited on the steel ball portion, and then the coated ball portion is highly burnished to obtain a contact surface which is glass hard. Although this procedure overcomes the problem of ball portion wear, it makes the cost of the finished ball portion extremely high.
A windscreen wiper linkage ball and socket joint assembly according to the present invention is an assembly in which the socket portion is formed from a mouldable non-metallic synthetic composition and the ball portion is formed by injection moulding about a knurled shank of a metal pin an acetal copolymer containing dispersed therein a bearing lubricant material.
Preferably, the acetal copolymer used is an acetal copolymer modified with polytetrafluoroethylene. An example of such a copolymer is manufactured by Hoechst Chemicals under the trade name of Hostaform (registered trade mark) C9021 TF.
The ball portion may be formed as a spherical shape about the metal pin, but, advantageously, the shape of the ball portion is that of an annular torus surrounding the shank of said pin. Preferably the injection moulding joint line for the ball portion is arranged to occur along two diametricallyopposed portions of the annular torus which have a surface curvature less curved than the curvature of the remainder of the annular torus.
The invention and how it may be performed are hereinafter particularly described with reference to the accompanying drawings, in which:
Figure 1 is an elevational view of a windscreen wiper linkage assembly including ball and socket joint assemblies according to the present invention;
Figure 2 is a view of a windscreen wiper linkage assembly shown in Figure 1 taken along the line 2-2 in Figure 1;
Figure 3 is an enlarged cross-sectional view of a ball portion of the ball and socket joint assembly according to the present invention;
Figure 4 is a plan view of the ball portion shown in Figure 3 taken along the line 4 4- of Figure 3; Figure 5 is a cross-sectional view of the ball portion shown in Figure 3, taken at right angles to the view shown in Figure 3;;
Figure 6 is a plan view of the ball portion shown in Figure 5 taken along the line 6-6 of Figure 5; and
Figure 7 is an enlarged cross-sectional view of one of the ball and socket joint assemblies according to the invention and as shown in Figure 1 and 2.
Figure 1 and 2 of the accompanying drawings show two views of a typical single drive double output windscreen wiper linkage assembly 10 fitted with ball and socket joint assemblies 24 according to the present invention. An electric drive motor (not shown) is coupled to one end of a drive link arm 12 by means of a rotary drive link (not shown) and a ball and socket joint assembly according to the present invention, of which only a socket portion 26 is shown in Figures 1 and 2.
The other end of the drive link arm 12 is pivotally connected to one end of the cross bar of a T-shaped link plate 14 by means of a second ball and socket joint assembly 24. The end of the base of the T-shaped plate 14 is connected to drive shaft 16 of a first windscreen wiper arm and blade (not shown), and the other end of the cross bar of the T-shaped plate 14 is pivotally connected to one end of a drive transfer link arm 18 by means of a third ball and socket joint assembly 24. The other end of drive transfer link arm 18 is pivotally connected to one end of a link 20 by means of a fourth ball and socket joint assembly 24, the other end of which link 20 is connected to a drive shaft 22 of a second windscreen wiper arm and blade (not shown).Operation of the electric drive motor causes reciprocatory movement of drive link arm 12, which movement is transferred through the intervening ball and socket joint assemblies 24 to the link plate 14 and link 20 to cause corresponding oscillatory movement of drive shafts 16 and 22.
Turning now to Figures 3 to 6 of the accompanying drawings, these show enlarged cross-sectional elevation and plan views of a ball portion 28 of the ball and socket joint assembly 24, taken from two directions mutually at right angles to one another. The ball portion 28 shown in Figure 3 comprises an acetal copolymer containing therein a bearing lubricant material, injection moulded about a zinc-coated mild steel pin 30. Pin 30 has an integral flange 32 formed adjacent one end 33 thereof and a shank portion 34, a portion 36 of the surface of which, intermediate the flange 32 and the other end 38 thereof, is heavily knurled. The acetal copolymer forming the ball portion 28 is injection-moulded in place about the knurled portion 36 of the shank portion 34 and is thus securely locked in position on the pin 30 against any movement relative to the pin 30.
In a preferred embodiment of the present invention, the ball portion is formed from an acetal copolymer containing polytetrafluoroethylene dispersed therein as a bearing lubricant, which is manufactured and sold by Hoechst Chemicals under the trade name of Hostaform (registered trade mark) C9021 TF. Other bearing lubricant materials, such as molybdenum disulphide, could be used in place of polytetrafluoroethylene.
The physical properties of Hostaform C9021 TF are as follows:
Density 1.52 g/cm3
Water absorption - mg
after 24 hours
Water absorption 20 mg
after 96 hours
Melt index MF1 190/2, 16 8 g/1 0 mins
Yield stress 53 N/mm2
Elongation at break 20~25% Limiting flexuralstress 94 N/mm2
Torsional stiffness at 230C 750 N/mm2
Torsional stiffness at 1 200C - N/mm2 Bend creep modulus, 2600 N/mm2
1 mm value
Ball indentation hardness, 133 N/mm2
30 secs.Value
Shore hardness 80
Impact strength 30 mJ/mm2
Notched impact strength 4.5 mJ/mm2
at 230C
Dynamic friction coefficient 0.2-0.25 against rotating steel shaft
(roughness depth ~ 2.5,us) Dimensional stability under 760C
heat (Martens method)
Dimensional stability under 11 50C heat (heat distortion temperature)
Vicat softening point VSP/B 1150C
Crystalline melting range 164-1 670C Coefficient of linear 1.1 x 10-4
expansion 20-1 000C Thermal cavity at 200C 0.31 W/m.K
Specific heat at 200C 1.47 kJ/kg.K
Volume resistivity 1015#cm Surface resistance 1013 Q Dielectric constant 3.6
Injection-moulding of the ball portion 28 about the pin 30 takes place in an accurately-shaped insert mould which is designed to mould the ball portion 28 in the form of an annular torus, a major portion of which has a predetermined surface of curvature 40 which accurately corresponds to the surface of curvature 41 of the socket portion 26 shown in Figures 1, 2 and 7 of the accompanying drawings. Two minor portions of the annular terms diametrically opposite one another each have a surface of curvature 42 which is less curved than the surface of curvature 40, as can be clearly seen in Figures 3, 4, 5 and 6 of the accompanying drawings. The inset mould for the ball portion is so designed that the flash line produced on the surface of the as-moulded ball portion 28 is located within said minor portions of the annular torus.Since the surface of curvature 42 is less than the surface of curvature 40, such a flash line will not make contact with the corresponding surface of curvature 41 of the socket portion 26 during use of the ball and socket joint assembly 24. Consequently, there is no need to burnish or otherwise machine the as-moulded ball portion 28 to remove the flash line thereon.
Assembly of the ball and socket joint assembly 24 is carried out by the direct insertion of the ball portion 28 as a snap-fit in the socket portion 26, which socket portion is made from a mouldable non-metallic composition such as a 30% by weight glass fibre-filled Nylon 12 synthetic polymer. Such compositions are obtainable from manufacturers such as Hulls (U.K.) Limited and
Vestamid. A cross-sectional view of the assembled ball and socket joint assembly 24 is illustrated in Figure 7 of the accompanying drawings, which shows the fourth ball and socket joint assembly 24 of the Figures 1 and 2. As can be seen from Figures 7, the ball portion 28 of the ball and socket joint assembly 24 is secured to the link 20 by passing the end 33 of the pin 30 through a suitable aperture in the end of link 20 until the flange 32 of the pin 30 contacts the link 20 and then rivetting over the end 33 to clamp the pin 30 in position on link 20.
The ball and socket joint assembly of the present invention represents a marked improvement over known ball and socket joint assemblies for windscreen wiper linkages as regards ease of manufacture, cost of manufacture and service life. The pin supporting the ball portion is of relatively cheap material and is easy to manufacture, being of zinc-plated mild steel which is cold-headed to shape rather than turned, and the ball portion is rapidly and reproducibly injection-moulded on the pin to the correct working dimensions without further surface treatment. The acetal co-polymer of the ball portion has both dimensional stability and toughness exceeding that of synthetic polyamides such as Nylon, with substantially no appreciable water absorption or shrinkage. Moreover a useful feature of the present invention resides in the fact that the material of the ball portion has sufficient flexibility to compensate for the tendency of the moulded socket portion to distort from a circular shape to an oval shape on removal from the mould. This, in turn, means a better torque output from such a joint assembly compared to known ball and socket joint assemblies
Claims (6)
1. A windscreen wiper linkage ball and socket joint assembly comprising a socket portion formed from a mouldable non-metallic synthetic composition and a ball portion formed by injection-moulding about a knurled shank of a metal pin an acetal copolymer containing dispersed therein a bearing lubricant material.
2. A windscreen wiper linkage ball and socket joint assembly according to claim 1, in which the acetal copolymer contains polytetrafluoroethylene dispersed therein.
3. A windscreen wiper linkage ball and socket joint assembly according to claim 1 or 2, in which the shape of the ball portion is that of an annular torus surrounding the shank of said pin.
4. A windscreen wiper linkage ball and socket joint assembly according to claim 3 in which two diametrically opposed minor portions of the annular torus each have a surface of curvature that is less curved than the remaining surface of curvature of the annular torus, and the injectionmoulding joint line of the ball portion is located within the surface area of these two minor portions.
5. A windscreen wiper linkage ball and socket joint assembly according to any one of the preceding claims, in which the socket portion is formed from a glass-filled polyamide synthetic material.
6. A windscreen wiper linkage ball and socket joint assembly substantially as hereinbefore particularly described and as shown in Figures 1 to 7 of the accompanying drawings.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08119460A GB2102061B (en) | 1981-06-24 | 1981-06-24 | Windscreen wiper linkage ball and socket joint assembly |
| DE19823222308 DE3222308A1 (en) | 1981-06-24 | 1982-06-14 | BALL JOINT CONNECTION FOR A WIPER |
| IT48663/82A IT1148964B (en) | 1981-06-24 | 1982-06-17 | IMPROVEMENT IN THE SPHERICAL JOINTS FOR WIPER JOINTS |
| ES513380A ES513380A0 (en) | 1981-06-24 | 1982-06-23 | A KNEE JOINT ARRANGEMENT FOR WINDSHIELD WIPER JOINT. |
| FR8211070A FR2508579A1 (en) | 1981-06-24 | 1982-06-24 | BALL JOINT FOR WINDSCREEN WIPER LINKAGE |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB08119460A GB2102061B (en) | 1981-06-24 | 1981-06-24 | Windscreen wiper linkage ball and socket joint assembly |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| GB2102061A true GB2102061A (en) | 1983-01-26 |
| GB2102061B GB2102061B (en) | 1985-03-06 |
Family
ID=10522770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB08119460A Expired GB2102061B (en) | 1981-06-24 | 1981-06-24 | Windscreen wiper linkage ball and socket joint assembly |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE3222308A1 (en) |
| ES (1) | ES513380A0 (en) |
| FR (1) | FR2508579A1 (en) |
| GB (1) | GB2102061B (en) |
| IT (1) | IT1148964B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002419A (en) * | 1989-06-15 | 1991-03-26 | Valeo Systemes D'essuyage | Knuckle joint, in particular for a windshield wiper for an automotive vehicle |
| WO1997040278A1 (en) * | 1996-04-22 | 1997-10-30 | Igus Spritzgussteile für die Industrie GmbH | Eye type bearing and process for its production |
| EP1394423A1 (en) * | 2002-08-30 | 2004-03-03 | Integrated Electronic Systems !SYS Consulting GmbH | Pivot of synthetic material and method of its manufacture |
| EP1295767A3 (en) * | 2001-09-21 | 2004-03-24 | Robert Bosch Gmbh | Wiper arm and method to produce a wiper arm |
| EP1628815A2 (en) * | 2003-01-27 | 2006-03-01 | Tri-Mack Plastics Manufacturing Corp., | Lubrication free connection |
| US11578752B2 (en) | 2017-01-06 | 2023-02-14 | Robert Bosch Gmbh | Ball joint with locking ball socket assembly |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19639593B4 (en) * | 1996-09-26 | 2010-08-19 | Robert Bosch Gmbh | wiper device |
| DE19921107C2 (en) * | 1998-05-12 | 2002-12-19 | Trw Inc | Method of making a ball joint |
| DE10135386A1 (en) * | 2001-07-25 | 2003-02-13 | Zf Lemfoerder Metallwaren Ag | Ball and socket joint for a motor vehicle comprises a bearing shell which at least in parts is made of fiber reinforced plastic material containing an anti-adhesive substance |
| DE10139564A1 (en) * | 2001-08-10 | 2003-02-20 | Audi Ag | Ball-and-socket joint for use in car suspension systems has steel ball and shaft and socket made of material with smaller E-modulus which is reinforced with steel pins |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1368157A (en) * | 1963-05-10 | 1964-07-31 | Ducellier & Cie | Joint, in particular for wiper linkage elements |
-
1981
- 1981-06-24 GB GB08119460A patent/GB2102061B/en not_active Expired
-
1982
- 1982-06-14 DE DE19823222308 patent/DE3222308A1/en not_active Withdrawn
- 1982-06-17 IT IT48663/82A patent/IT1148964B/en active
- 1982-06-23 ES ES513380A patent/ES513380A0/en active Granted
- 1982-06-24 FR FR8211070A patent/FR2508579A1/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5002419A (en) * | 1989-06-15 | 1991-03-26 | Valeo Systemes D'essuyage | Knuckle joint, in particular for a windshield wiper for an automotive vehicle |
| WO1997040278A1 (en) * | 1996-04-22 | 1997-10-30 | Igus Spritzgussteile für die Industrie GmbH | Eye type bearing and process for its production |
| EP1295767A3 (en) * | 2001-09-21 | 2004-03-24 | Robert Bosch Gmbh | Wiper arm and method to produce a wiper arm |
| EP1394423A1 (en) * | 2002-08-30 | 2004-03-03 | Integrated Electronic Systems !SYS Consulting GmbH | Pivot of synthetic material and method of its manufacture |
| EP1628815A2 (en) * | 2003-01-27 | 2006-03-01 | Tri-Mack Plastics Manufacturing Corp., | Lubrication free connection |
| EP1628815A4 (en) * | 2003-01-27 | 2006-08-23 | Tri Mack Plastics Mfg Corp | Lubrication free connection |
| US11578752B2 (en) | 2017-01-06 | 2023-02-14 | Robert Bosch Gmbh | Ball joint with locking ball socket assembly |
Also Published As
| Publication number | Publication date |
|---|---|
| DE3222308A1 (en) | 1983-01-20 |
| ES8306839A1 (en) | 1983-06-01 |
| FR2508579A1 (en) | 1982-12-31 |
| IT8248663A0 (en) | 1982-06-17 |
| ES513380A0 (en) | 1983-06-01 |
| GB2102061B (en) | 1985-03-06 |
| IT1148964B (en) | 1986-12-03 |
| FR2508579B1 (en) | 1985-01-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 732 | Registration of transactions, instruments or events in the register (sect. 32/1977) | ||
| PCNP | Patent ceased through non-payment of renewal fee |