GB2242720A - Looseness indicator for fasteners - Google Patents

Looseness indicator for fasteners Download PDF

Info

Publication number
GB2242720A
GB2242720A GB9006818A GB9006818A GB2242720A GB 2242720 A GB2242720 A GB 2242720A GB 9006818 A GB9006818 A GB 9006818A GB 9006818 A GB9006818 A GB 9006818A GB 2242720 A GB2242720 A GB 2242720A
Authority
GB
United Kingdom
Prior art keywords
indicating
wheel
pointer
hub
nut
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
Application number
GB9006818A
Other versions
GB9006818D0 (en
GB2242720B (en
Inventor
Michael Marczynski
Peter Brawley
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.)
Business Lines Ltd
Original Assignee
Business Lines Ltd
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=10673333&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=GB2242720(A) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Business Lines Ltd filed Critical Business Lines Ltd
Priority to GB9006818A priority Critical patent/GB2242720B/en
Publication of GB9006818D0 publication Critical patent/GB9006818D0/en
Publication of GB2242720A publication Critical patent/GB2242720A/en
Application granted granted Critical
Publication of GB2242720B publication Critical patent/GB2242720B/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F16B37/00—Nuts or like thread-engaging members
    • F16B37/14—Cap nuts; Nut caps or bolt caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
    • B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
    • B60B3/14—Attaching disc body to hub ; Wheel adapters
    • B60B3/16—Attaching disc body to hub ; Wheel adapters by bolts or the like
    • 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
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • 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
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/95—Constructional details of connections not covered for in other groups of this subclass with markings, colours, indicators or the like

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

A safety indicating device (24) to indicate whether or not a vehicle wheel nut (22) has become loose on its stud (20), comprises a body (26) and a pointer (28). The body (26) has grooves (30) enabling the device (24) to be releasably secured to a nut (22) so that the pointer (28) points towards a reference mark (32). <IMAGE>

Description

A SAFETY INDICATING DEVICE The present invention relates to a safety indicating device. The invention is particularly directed towards a safety indicating device for use with vehicle wheels.
A common method of attaching a vehicle wheel to a rotating hub is to provide a number of fixed threaded studs on the rotatable hub and to attach the wheel to the hub by means of nuts engaging the studs, the studs passing through appropriately spaced openings in the wheel.
It is not uncommon for one or more of the wheel nuts to work loose whilst the vehicle is in use so that the wheel can move relative to the hub creating a dangerous and unsafe driving condition.
Whilst a visual inspection on a regular basis is recommended by the vehicle manufacturer, visual inspection does not always readily reveal that one or more of the nuts is working loose particularly if the nut has only moved by a small amount relative to the stud.
The present invention seeks to provide a relatively simple means enabling visual inspection to be carried out so as to indicate whether or not a wheel nut has become loose or is starting to become loose.
Accordingly the present invention provides a safety indicating device for indicating displacement between a first fixed member and a second member rotatably attached to the first member, the device comprising engagement means enabling the device to be releasably secured to the second member, and indicating means to indicate the position of the device relative to a reference.
The engagement means can comprise a plurality of equispaced grooves and the indicating means can comprise a pointer.
The indicating device can comprise a body having a bore formed with equispaced grooves and a pointer formed integrally with the body.
The body and the pointer can be moulded in one piece, or extruded so that the body and the pointer both have the same thickness.
A device according to the present invention is particularly useful for indicating whether or not a wheel nut has become loose so that the first member comprises a threaded stud and the second member comprises a wheel nut.
The reference can comprise a datum point, a line, or the indicating means of other safety indicating devices.
The datum point can comprise a fluorescent spot adjacent each stud hole on a vehicle wheel.
The present invention further comprises a vehicle wheel and hub assembly comprising studs on the hub and associated nuts securing the vehicle wheel to the hub, an indicating device being secured to each nut and arranged on each nut when tightened, so that each device points to a reference.
The present invention will now be more particularly described with reference to the accompanying drawing in which, Fig. 1 shows a side elevation of a vehicle wheel including a number of indicating devices according to the present invention, Fig. 2 shows a perspective view of one of the indicating devices illustrated in Fig. 1 in more detail, and Fig. 3 shows an alternative form of indicating device to that shown in Fig. 2.
Referring to Fig. 1 there is shown a vehicle wheel assembly 10 comprising an axle 12, a hub 14, and a rim 16 on which a tyre 18 is mounted. The hub 14 has six threaded studs 20 which pass through openings in the rim 16, and the rim 16 is secured to the hub 14 by nuts 22. A safety indicating device 24 is attached to each nut 22 as shown in more detail in Fig. 2.
The device 24 comprises a body 26 having a pointer 28. The body 26 has a central bore which is provided with a number of equip spaced grooves or splines enabling the device 24 to be secured to the nut 22 by engagement between the corners of the nut and respective ones of the grooves 30.
Each device 24 can include a reference in the form of a mark 32 on the rim 16. The mark 32 can be painted onto the rim or stuck to the rim, and the mark can be fluorescent.
The bore in the body 26 and the splines 30 are sized so that the device is a force fit on each nut 22 so that the device will not become loose during use but can be released from the nut when necessary.
In order to use the device as illustrated in Figs. 1 and 2, the rim 16 and therefore the tyre 18 is attached to the hub 14 in the usual way and all of the nuts 22 are tightened to the necessary degree of tightness. A device 24 is then attached to each wheel nut so that each pointer 28 points to its respective reference mark 32.
It will be appreciated that if there is any relative movement between any one of the nuts 22 and studs 20 the pointer 28 will not be pointing towards its reference mark 32. Therefore the device according to the present invention provides a visual indication if the nut to which it is attached, has become loose without the need to jack the vehicle wheel and to test each nut for tightness by hand or by using a tool.
Whilst in the illustrated embodiment of the invention all of the pointers are directed radially outwardly, they can be directed in any direction which may be appropriate. For example, all of the pointers can point in a number of random directions provided that when the device is attached to a tightened nut the pointer will be directed towards a reference mark so that displacement between the pointer and the reference mark can be visually noted.
The mark 32 can be omitted, and the pointers can be directed in a common direction, eg all parallel to one another, or all radially outwardly or inwardly, so that if one or more of the wheel nuts became loose, the displacement of the safety devices is readily noted by the eye.
Fig. 3 shows an alternative form of indicating device of generally the same form to that shown in Fig. 2 except that instead of the device being formed by a moulding it is formed by an extrusion process, the thickness of the pointer 28 being the same as the thickness of the body 26.
If it is required to tighten a wheel nut the device 24 can be removed from the nut by applying leverage between the device and the wheel rim or applying a pulling load to the device 24 to remove the device from the nut. After tightening has taken place the device is replaced so that the indicator 28 is pointing towards the reference mark 32. If it is not possible when replacing the device for the pointer 28 to point directly to the reference point 32 the reference mark can be removed from its existing position and relocated so that the pointer 28 is directed towards it.

Claims (12)

1 A safety indicating device for indicating displacement between a first fixed member and a second member rotatably attached to the first member, the device comprising engagement means enabling the device to be releasably secured to the second member and indicating means to indicate the position of the device relative to a reference.
2 A device as claimed in claim 1 in which the engagement means comprises a plurality of equispaced grooves.
3 A device as claimed in claim 1 or claim 2 in which the indicating means comprises a pointer.
4 A device as claimed in any one of the preceding claims in which the device comprises a body having a bore formed with equispaced grooves and a pointer formed integrally with the body.
5 A device as claimed in claim 4 in which the body and the pointer have the same thickness.
6 A device as claimed in any one of the preceding claims in which the first member comprises a threaded stud and the second member comprises a nut.
7 A device as claimed in any one of the preceding claims in which the reference comprises a datum point locatable with respect to the indicating means.
8 A device as claimed in claim 7 in which the datum point comprises a mark on a structure to be secured between the first and second members.
9 A device as claimed in claim 8 in which the mark is fluorescent and the device is fluorescent.
10 A safety indicating device constructed and arranged for use and operation substantially as herein described.
11 A vehicle wheel and hub assembly, the wheel being secured to the hub by means of fixed threaded studs on the hub extending through holes in the wheel and nuts on the studs clamping the wheel to the hub, each said nut including a safety indicating device as claimed in any one of the preceding claims 1 - 10.
12 A vehicle wheel and hub assembly constructed and arranged for use and operation substantially as herein described.
GB9006818A 1990-03-27 1990-03-27 A safety indicating device Expired - Lifetime GB2242720B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9006818A GB2242720B (en) 1990-03-27 1990-03-27 A safety indicating device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB9006818A GB2242720B (en) 1990-03-27 1990-03-27 A safety indicating device

Publications (3)

Publication Number Publication Date
GB9006818D0 GB9006818D0 (en) 1990-05-23
GB2242720A true GB2242720A (en) 1991-10-09
GB2242720B GB2242720B (en) 1993-08-04

Family

ID=10673333

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9006818A Expired - Lifetime GB2242720B (en) 1990-03-27 1990-03-27 A safety indicating device

Country Status (1)

Country Link
GB (1) GB2242720B (en)

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388563A (en) * 1993-10-04 1995-02-14 Micro Inventions Technology Inc. Indexed scale fastener with damping means for use in conjunction with an archery bow
GB2323649A (en) * 1997-03-25 1998-09-30 Grant Paul Cadman Nut slackening indicator
GB2325505A (en) * 1997-04-24 1998-11-25 Business Lines Limited Wheel nut position indicator and dust cap
GB2335720A (en) * 1997-04-24 1999-09-29 Business Lines Limited A combined dust cap and position indicating device, particularly for vehicle wheel nuts
US6053681A (en) * 1998-06-02 2000-04-25 Mattershead; Dennis Wheel nut locking assembly
GB2343726A (en) * 1998-11-13 2000-05-17 Business Lines Limited Indicating loosening of a nut or bolt
US6158933A (en) * 1999-12-30 2000-12-12 Nicholson; Orv Dirt cap device for visually indicating rotation of a fastener and for keeping the fastener clean
US6270302B1 (en) * 1999-10-18 2001-08-07 Antony C. Lyons Fastener identification system
US6398312B1 (en) 1998-04-24 2002-06-04 Business Lines Limited Combined dust cap and position indicating device, particularly for vehicle wheel nuts
GB2393488A (en) * 2002-09-18 2004-03-31 Peter Brawley Wheel nut indicator mount
WO2005059381A1 (en) * 2003-12-17 2005-06-30 Business Lines Limited A safety device particularly for multiple wheel nuts
GB2409888A (en) * 2004-01-08 2005-07-13 Ciptex Ltd Rotation indicator for screw threaded connectors used to secure railway tracks
GB2454164A (en) * 2007-08-25 2009-05-06 Business Lines Ltd Rotation indicator device
WO2010003250A1 (en) * 2008-07-10 2010-01-14 Davies Lfor C Wheel lug nut locking device
US7814858B1 (en) 2008-06-11 2010-10-19 Brunswick Corporation Condition indicator for a marine component
DE102010007575A1 (en) * 2010-02-10 2011-08-11 Benteler Automobiltechnik GmbH, 33102 Method for position control of module carrier of e.g. snatching nut in motor vehicle, involves checking existence of attachment unit at connection point by optical test unit together with positioning mark
WO2013024302A1 (en) 2011-08-17 2013-02-21 Business Lines Limited Rotation indicator
WO2013049913A1 (en) * 2011-10-07 2013-04-11 Boyce Bruce R Wheel nut lock
EP2642135A1 (en) 2012-03-19 2013-09-25 Krzysztof Maciejewski A rotation indicator for a vehicle wheel nut
GB2502988A (en) * 2012-06-12 2013-12-18 Milenco Ltd A nut cover
GB2511299A (en) * 2013-03-01 2014-09-03 Albertus Abraham Petrus De Groot Indicator swinging moisture out
GB2513155A (en) * 2013-04-17 2014-10-22 Airbus Operations Ltd An arrangement for assessing the clamp load relaxation in a highly-torqued fastener
WO2015000013A1 (en) 2013-07-05 2015-01-08 Marchmont Pty Limited Loose wheel nut indicator
JP5706985B1 (en) * 2014-03-26 2015-04-22 株式会社平成エンタープライズ Vehicle wheel nut looseness detector
FR3057628A1 (en) * 2016-10-18 2018-04-20 Total Raffinage Chimie INDICATOR DEVICE FOR NOURISHING NUT.
CN108843660A (en) * 2018-08-31 2018-11-20 广东电网有限责任公司 A kind of bolt, nut assembly with loosening prompt facility
WO2019221599A1 (en) 2018-05-18 2019-11-21 Interparts Automotive B .V. A twin indicator with a pair of deformable bodies connected to each other via a deformable intermediate link for fitting over a pair of adjacent vehicle wheel mounting members
WO2020260907A1 (en) 2019-06-28 2020-12-30 Business Lines Limited Safety indicator device
WO2022023756A1 (en) 2020-07-30 2022-02-03 Business Lines Limited Rotation indicator device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2910694A1 (en) * 2015-10-26 2017-04-26 Farrell Campbell Nut indicators and assemblies thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB914194A (en) * 1960-10-31 1962-12-28 Chamberlain & Hookham Ltd Improvements in or relating to pointers used in measuring or recording instruments
GB928379A (en) * 1960-01-14 1963-06-12 Holo Krome Screw Corp Apparatus for tensioning threaded members
GB1040839A (en) * 1964-03-26 1966-09-01 Tech Del Ltd Adjustable indicator pointers for knobs
GB1508192A (en) * 1976-02-23 1978-04-19 Sab Brake Regulator Co Ltd Vehicle wheel brake lining wear indicator pointers
GB2094035A (en) * 1981-02-27 1982-09-08 Schwarzwald Uhrentech Uts Minute hand shaft for clocks

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB928379A (en) * 1960-01-14 1963-06-12 Holo Krome Screw Corp Apparatus for tensioning threaded members
GB914194A (en) * 1960-10-31 1962-12-28 Chamberlain & Hookham Ltd Improvements in or relating to pointers used in measuring or recording instruments
GB1040839A (en) * 1964-03-26 1966-09-01 Tech Del Ltd Adjustable indicator pointers for knobs
GB1508192A (en) * 1976-02-23 1978-04-19 Sab Brake Regulator Co Ltd Vehicle wheel brake lining wear indicator pointers
GB2094035A (en) * 1981-02-27 1982-09-08 Schwarzwald Uhrentech Uts Minute hand shaft for clocks

Cited By (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5388563A (en) * 1993-10-04 1995-02-14 Micro Inventions Technology Inc. Indexed scale fastener with damping means for use in conjunction with an archery bow
GB2323649A (en) * 1997-03-25 1998-09-30 Grant Paul Cadman Nut slackening indicator
GB2323649B (en) * 1997-03-25 2000-12-20 Grant Paul Cadman An indicator device
GB2325505A (en) * 1997-04-24 1998-11-25 Business Lines Limited Wheel nut position indicator and dust cap
GB2325505B (en) * 1997-04-24 1999-08-25 Business Lines Limited A combined dust cap and position indicating device, particularly for vehicle wheel nuts
GB2335720A (en) * 1997-04-24 1999-09-29 Business Lines Limited A combined dust cap and position indicating device, particularly for vehicle wheel nuts
GB2335720B (en) * 1997-04-24 2000-03-15 Business Lines Limited A combined dust cap and position indicating device,particularly for vehicle wheel nuts
US6398312B1 (en) 1998-04-24 2002-06-04 Business Lines Limited Combined dust cap and position indicating device, particularly for vehicle wheel nuts
US6595597B2 (en) 1998-04-24 2003-07-22 Business Lines Limited Combined dust cap and position indicating device, particularly for vehicle wheel nuts
US6053681A (en) * 1998-06-02 2000-04-25 Mattershead; Dennis Wheel nut locking assembly
GB2343726B (en) * 1998-11-13 2000-09-27 Business Lines Limited A position indicator assembly
WO2000029755A1 (en) * 1998-11-13 2000-05-25 Business Lines Limited A position indicator assembly for nuts and/or bolts
GB2343726A (en) * 1998-11-13 2000-05-17 Business Lines Limited Indicating loosening of a nut or bolt
US6561124B1 (en) 1998-11-13 2003-05-13 Business Lines Limited Position indicator assembly for nuts and or bolts
AU756228B2 (en) * 1998-11-13 2003-01-09 Business Lines Limited A position indicator assembly for nuts and/or bolts
US6270302B1 (en) * 1999-10-18 2001-08-07 Antony C. Lyons Fastener identification system
US6158933A (en) * 1999-12-30 2000-12-12 Nicholson; Orv Dirt cap device for visually indicating rotation of a fastener and for keeping the fastener clean
GB2393488A (en) * 2002-09-18 2004-03-31 Peter Brawley Wheel nut indicator mount
GB2393488B (en) * 2002-09-18 2005-07-27 Peter Brawley Wheel nut indicator mount
WO2005059381A1 (en) * 2003-12-17 2005-06-30 Business Lines Limited A safety device particularly for multiple wheel nuts
US7415888B2 (en) 2003-12-17 2008-08-26 Michael Marczynski Safety device particularly for multiple wheel nuts
GB2409888A (en) * 2004-01-08 2005-07-13 Ciptex Ltd Rotation indicator for screw threaded connectors used to secure railway tracks
WO2005066506A1 (en) 2004-01-08 2005-07-21 Ciptex Limited Railway safety apparatus
GB2454164B (en) * 2007-08-25 2011-10-12 Business Lines Ltd Rotation indicator device
GB2454164A (en) * 2007-08-25 2009-05-06 Business Lines Ltd Rotation indicator device
US8152426B2 (en) 2007-08-25 2012-04-10 Business Lines Limited Rotation indicator device
US7814858B1 (en) 2008-06-11 2010-10-19 Brunswick Corporation Condition indicator for a marine component
EP2310698A1 (en) * 2008-07-10 2011-04-20 Ifor C. Davies Wheel lug nut locking device
WO2010003250A1 (en) * 2008-07-10 2010-01-14 Davies Lfor C Wheel lug nut locking device
EP2310698A4 (en) * 2008-07-10 2013-01-02 Ifor C Davies Wheel lug nut locking device
US8708627B2 (en) 2008-07-10 2014-04-29 Ifor C. Davies Wheel lug nut locking device
DE102010007575A1 (en) * 2010-02-10 2011-08-11 Benteler Automobiltechnik GmbH, 33102 Method for position control of module carrier of e.g. snatching nut in motor vehicle, involves checking existence of attachment unit at connection point by optical test unit together with positioning mark
WO2013024302A1 (en) 2011-08-17 2013-02-21 Business Lines Limited Rotation indicator
US9353776B2 (en) 2011-08-17 2016-05-31 Business Lines Limited Rotation indicator
WO2013049913A1 (en) * 2011-10-07 2013-04-11 Boyce Bruce R Wheel nut lock
EP2642135A1 (en) 2012-03-19 2013-09-25 Krzysztof Maciejewski A rotation indicator for a vehicle wheel nut
GB2502988A (en) * 2012-06-12 2013-12-18 Milenco Ltd A nut cover
GB2502988B (en) * 2012-06-12 2014-11-05 Milenco Ltd A nut cover
GB2511299A (en) * 2013-03-01 2014-09-03 Albertus Abraham Petrus De Groot Indicator swinging moisture out
GB2511299B (en) * 2013-03-01 2016-03-02 Albertus Abraham Petrus De Groot An indication device particularly for wheel nuts, focused on the control of the entrance and exit of moisture in service of a vehicle
GB2513155A (en) * 2013-04-17 2014-10-22 Airbus Operations Ltd An arrangement for assessing the clamp load relaxation in a highly-torqued fastener
GB2513155B (en) * 2013-04-17 2015-07-15 Airbus Operations Ltd An arrangement for assessing the clamp load relaxation in a highly-torqued fastener
EP3017203B1 (en) 2013-07-05 2018-08-22 Marchmont Pty Limited Loose wheel nut indicator
WO2015000013A1 (en) 2013-07-05 2015-01-08 Marchmont Pty Limited Loose wheel nut indicator
JP5706985B1 (en) * 2014-03-26 2015-04-22 株式会社平成エンタープライズ Vehicle wheel nut looseness detector
FR3057628A1 (en) * 2016-10-18 2018-04-20 Total Raffinage Chimie INDICATOR DEVICE FOR NOURISHING NUT.
WO2018073036A1 (en) 2016-10-18 2018-04-26 Total Raffinage Chimie Device indicating the loosening of a nut
WO2019221599A1 (en) 2018-05-18 2019-11-21 Interparts Automotive B .V. A twin indicator with a pair of deformable bodies connected to each other via a deformable intermediate link for fitting over a pair of adjacent vehicle wheel mounting members
CN108843660A (en) * 2018-08-31 2018-11-20 广东电网有限责任公司 A kind of bolt, nut assembly with loosening prompt facility
WO2020260907A1 (en) 2019-06-28 2020-12-30 Business Lines Limited Safety indicator device
WO2022023756A1 (en) 2020-07-30 2022-02-03 Business Lines Limited Rotation indicator device
GB2597714A (en) * 2020-07-30 2022-02-09 Business Lines Ltd Rotation indicator device

Also Published As

Publication number Publication date
GB9006818D0 (en) 1990-05-23
GB2242720B (en) 1993-08-04

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Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Expiry date: 20100326