GB2237615A - Threaded insert - Google Patents

Threaded insert Download PDF

Info

Publication number
GB2237615A
GB2237615A GB9023743A GB9023743A GB2237615A GB 2237615 A GB2237615 A GB 2237615A GB 9023743 A GB9023743 A GB 9023743A GB 9023743 A GB9023743 A GB 9023743A GB 2237615 A GB2237615 A GB 2237615A
Authority
GB
United Kingdom
Prior art keywords
threaded insert
thread
insert according
holding member
slot
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
GB9023743A
Other versions
GB9023743D0 (en
GB2237615B (en
Inventor
Rainer Isenberg
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.)
ITW Ateco GmbH
Original Assignee
ITW Ateco GmbH
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 ITW Ateco GmbH filed Critical ITW Ateco GmbH
Publication of GB9023743D0 publication Critical patent/GB9023743D0/en
Publication of GB2237615A publication Critical patent/GB2237615A/en
Application granted granted Critical
Publication of GB2237615B publication Critical patent/GB2237615B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • F16B37/122—Threaded inserts, e.g. "rampa bolts"
    • F16B37/125—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded
    • 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
    • F16B13/00—Dowels or other devices fastened in walls or the like by inserting them in holes made therein for that purpose
    • F16B13/12—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like
    • F16B13/124—Separate metal or non-separate or non-metal dowel sleeves fastened by inserting the screw, nail or the like fastened by inserting a threaded element, e.g. screw or bolt
    • 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
    • F16B37/12—Nuts or like thread-engaging members with thread-engaging surfaces formed by inserted coil-springs, discs, or the like; Independent pieces of wound wire used as nuts; Threaded inserts for holes
    • F16B37/122—Threaded inserts, e.g. "rampa bolts"
    • F16B37/125—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded
    • F16B37/127—Threaded inserts, e.g. "rampa bolts" the external surface of the insert being threaded and self-tapping
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/30—Locking exclusively by special shape of the screw-thread
    • 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
    • F16B39/00—Locking of screws, bolts or nuts
    • F16B39/22—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening
    • F16B39/28—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt
    • F16B39/36—Locking of screws, bolts or nuts in which the locking takes place during screwing down or tightening by special members on, or shape of, the nut or bolt with conical locking parts, which may be split, including use of separate rings co-operating therewith
    • 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
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/0216—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable
    • F16B5/0233—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread the position of the plates to be connected being adjustable allowing for adjustment perpendicular to the plane of the plates

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Dowels (AREA)
  • Temperature-Responsive Valves (AREA)
  • Hydraulic Turbines (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

A threaded insert (1) for fastening a mounting member on a holding member has an outer thread (3) for screwing into the holding member (11) and an inner thread (8) for receiving of a screw (12) for holding the mounting member (13). The threaded insert (1) has four slots (6) extending axially from a front end of the insert, and the outer thread (3) has a tapering portion (3') in the region of the slot (6). The flange (4) may have an outer hexagonal form (5) for a tool; alternatively an inner hexagon or a cross recess may be provided in the flange. <IMAGE>

Description

Threaded insert The invention resides in a threaded insert for fastening a mounting member to a holding member, said insert having an outer thread for screwing into the holding member and an inner thread for receiving a screw holding the mounting member.
In different fields of construction, for instance in the field of the construction of vehicles, it is customary to realize screw mounts by the use of a plurality of fastening members. For this, a threaded insert of the cited kind is screwed into a holding member. The threaded insert serves for the receipt of the screw which fastens a mounting member at the holding member or the threaded insert. Such screw mounts Are especially used if a thread inserted into the holding member can be easily destroyed, as this is for instance the case with a holding member of aluminum. Then, it is necessary to turn the threaded insert only once with high precision while the screw can be released and also tightened many times without the necessity of special caution.
However, a durable protection of the screwing for avoiding an automatic release or a coturning effect of the threaded insert during the release of the screw can be only realized in a difficult manner. In many cases, protection of the thread formed by the insert is achieved by the application of an adhesive, for instance by microencapsulation. However, such measures of protection are expensive and suseptible to damage.
According to this invention a threaded insert for fastening a mounting member on a holding member, comprises an outer thread for screwing into the holding member and an inner thread for receiving a screw for holding the mounting member, in which the threaded insert has at least one slot extending from a front end of the insert in an axial direction, and in which the outer thread has a thread inlet in the range of the slot, the outer diameter of the thread inlet increasing with increasing axial distance from the slotted front end.
An inventive threaded insert has a relative good radial deformability in its slot range. When the thread inlet is screwed in ,the insert is partly radially compressed in the slot range since, with increasing screw depth, an increasing outer diameter comes into engagement in the prepared bore of the holding member. At the same time the outer thread is pressed deeper and deeper into the material of the holding member with increasing distance from the slotted end. It is most favourable if the diameter of the bore or the outer diameter of an inner thread prepared therein substantially corresponds to the smallest diameter of the thread inlet.In any case, the diameter of the bore or the outer diameter of a prepared inner thread is not allowed to correspond to the maximum diameter of the thread inlet or to increase the same since in such a case no increasing radial deformation with increasing screwing depth is reached.
The total cross-section of the thread insert in the slot range and thus also the diameter of its inner thread lying therebelow is decreased by the radial compression.
The size of the diameter reduction substantially depends on the materials of the threaded insert and of the holding member as well as on the dimensions of the threaded insert and of the bore or of a prepared inner thread in the holding member. A screw subsequently turned into the threaded insert enforces a radial spreading in the slot range of the threaded insert whereby the thread inlet is pressed into the surrounding material. By this not only a protection of the threaded insert in the holding member but also of the screw which is held without play in the threaded insert is realized. By the selection of suitable materials and a suitable dimensioning of the members the reaction- forces responsible for the protection are not decreased so far that a reduction of the clamping forces below the necessary value results.Accordingly, the inventive protection is durable and prevents in an effective manner an unavoided release of the screw mounting. Furthermore, the threaded insert has a selfcutting function on account of its thread inlet.
According to a preferred embodiment of the invention a plurality of slots, preferably four slots, are disposed around the periphery of the threaded insert in a equally spaced manner. By this feature a simple manufacture is assured with a sufficient radial deformability since opposing slots can be simultaneously incorporated.
According to another embodiment each slot axially extends about half of the length of the outer thread so that the screw which is turned in is tightly held in the inner thread when the spreading effect begins at the reaching of the slot range. Then, the inner thread and the screw thread of the screw are protected against destroying on account of increased turning-in moments during spreading. Furthermore, the outer thread can be used as supporting thread so that the threaded insert can transfer high mounting forces.
Preferably, the slot width corresponds to about a quarter of the core diameter of the outer thread.
According to a practical embodiment it is provided that the outer diameter of the thread inlet extends in the skirt surface of a cone whereby a slight slope of the spreading and protection forces is attained. If according to another embodiment the thread inlet is joined by an inner thread the outer diameter of which extends in the skirt surface of a cylinder, a maximum spreading and protection force is not exceeded and a high load capacity of the screw mounting is enabled.
According to a preferred embodiment it is provided that the threaded insert has a flange on the front face showing away from the thread inlet. Upon turning into the holding member the flange can be pressed against the outer surface of the holding member whereby it provides for additional protection by axially restraining the threaded insert. Furthermore, a mounting member can be supported at the flange so that fastening forces are introduced into the holding member exclusively by means of the threaded insert.
Finally, according to a practical embodiment it is provided that the threaded insert has engaging surfaces for a turn-down tool, especially an outer hexagon or an inner hexagon or a cross recess, at one front face, preferably at a front face provided with a flange.
Further details and advantages of the subject of the invention result from the following specification of the corresponding drawings which show an inventive threaded insert and a screw mounting made by this. In the drawings figure 1 shows a front view of a threaded insert, partly in cross-section; figure 2 shows a longitudinal section of a thread portion of the same threaded insert; figure 3 shows a view from below of the same threaded insert; figure 4 shows a longitudinal section of the same threaded insert in a holding member; figure 5 shows a longitudinal section of a screw mounting with the same threaded insert.
The sleeve-like threaded insert 1 shown in figures 1 to 3 has a cylindrical insert shaft 2 with an outer thread 3 of constant lead and of a constant flank angle. At one front face the insert shaft 2 has a flange 4 which is provided with an outer hexagon 5 for turning down the outer thread 3.
Four straight slots 6 emanate from another front face of the insert shaft 2. The slots are equally distributed about the periphery of the insert shaft 2 and extend in the axial direction thereof for about half of its length. The width of the slots 6 corresponds to approximately a quarter of the diameter of the insert shaft 2 which corresponds to the core diameter of the outer thread 3.
In the slot range the outer thread 3 has a thread inlet 3' the outer diameter of which increases with increasing distance from the slotted front face. The thread inlet 3' has reached its maximum outer diameter at the inner end of the slots 6, and the thread 3 has a completely formed triangular profile. The outer diameter of the thread inlet 3' extends on a skirt surface of the cone so that the thread profile between the slotted front face and the inner end of the slot is flattened on the outside. A thread 3 is formed as supporting thread 3'' between the thread inlet 3' and the flange 4. The outer diameter of the supporting thread extends on a skirt surface of a cylinder.
Finally, the threaded insert has also a throughbore 7 with an inner thread 8. In the range of the flange 4 the bore 7 is provided with an inner chamfer 9 which is to facilitate the introduction of a screw. A corresponding inner chamfer is formed at the slotted front face of the threaded insert 1 on account of reasons of manufacturing.
As shown in figure 4, for realizing a screw mounting the threaded insert 1 is first of all screwed into a bore 10 of a holding member 11. Since the threaded insert 1 has a self-cutting function, beforehand no inner thread has been incorporated into the bore 10. Since the smallest outer diameter of the outer thread 3 approximately corresponds to the inner diameter of the bore prior to the insertion of the threaded insert 1 and since the largest outer diameter of the outer thread 3 significantly exceeds the inner diameter of the bore, during turning down the outer thread is engraved into the inner wall of the bore.
On the other side, the threaded insert 1 is a little bit radially compressed in the range of the slots 6 by the reaction forces of the holding member 11. Consequently, the inner diameter of the inner thread 8 is reduced towards the slotted front faces.
Figure 5 shows that a screw 12 which has been finally screwed into the threaded insert 1 again presses apart the threaded insert due to its small compressibility in the range of the slot 6 so that the threaded insert takes its original shape. Consequently, the thread inlet 3' is pressed deeper into the inner wall of the bore 10 and a significant clamping effect on the outer periphery of the threaded insert 1 is attained. However, the reaction forces of the holding member 11 are also transmitted through the wall of the insert shaft 2 to the screw 12 and also secure the same in the screwing connection.
An axial restraining of the threaded insert 1 and an additional protection is achieved by firmly screwing the flange 4 against an abutting surface of the holding member 11. The flange 4 forms a supporting surface for a mounting member 13 on the outside. On the other side, the mounting member is held by the head 15 of the screw 12 by means of a washer 14. Even high forces can be transmitted between the mounting member 13 and the holding member 11, especially since the threaded insert 1 has a high tightening strength due to the supporting thread 3'' deeply gripping into the holding member 11.
An inventive threaded insert can cooperate with any commercial machine screws. A preferred material for the threaded insert has the designation 9S Mn Pb 28K.

Claims (11)

1. A threaded insert for fastening a mounting member on a holding member, comprising an outer thread for screwing into the holding member and an inner thread for receiving a screw for holding the mounting member, in which the threaded insert has at least one slot extending from a front end of the insert in an axial direction, and in which the outer thread has a thread inlet in the range of the slot, the outer diameter of the thread inlet increasing with increasing axial distance from the slotted front end.
2. A threaded insert according to claim 1, in which a plurality of slots are equiangularly arranged around the periphery of the threadedinsert.
3. A threaded insert according to claim 2, in which four slots are arranged around the periphery of the threaded insert.
4. A threaded insert according to any one of the preceding claims, in which the or each slot extends in the axial direction for about half of the length of the outer thread.
5. A threaded insert according to any one of the preceding claims, in which the width of the or each slot corresponds to about a quarter of the core diameter of the outer thread.
6. A threaded insert according to any one of the preceding claims, in which the outer diameter of the thread inlet is defined by a frusto-conical surface.
7. A threaded insert according to any one of the preceding claims, in which the thread inlet leads into a supporting thread the outer diameter of which defines a cylindrical surface.
8. A threaded insert according to one any of the preceding claims, in which the threaded insert has a flange at its end remote from the thread inlet.
9. A threaded insert according to any one of the preceding claims, in which the threaded insert has engaging surfaces for a driving tool.
10. A threaded insert according to claim 9, when dependent upon claim 8, in which the engaging surfaces are formed on the flange and have the form of an inner hexagon, an outer hexagon or a cross-shaped recess.
11. A threaded insert substantially as described with reference to the accompanying drawings.
GB9023743A 1989-11-02 1990-11-01 Threaded insert Expired - Fee Related GB2237615B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE3936355 1989-11-02

Publications (3)

Publication Number Publication Date
GB9023743D0 GB9023743D0 (en) 1990-12-12
GB2237615A true GB2237615A (en) 1991-05-08
GB2237615B GB2237615B (en) 1993-12-01

Family

ID=6392648

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9023743A Expired - Fee Related GB2237615B (en) 1989-11-02 1990-11-01 Threaded insert

Country Status (3)

Country Link
FR (1) FR2653839B1 (en)
GB (1) GB2237615B (en)
IT (1) IT1240563B (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006094749A1 (en) * 2005-03-07 2006-09-14 Boehl Harald Clamping sleeve and clamp connection
WO2007039154A1 (en) * 2005-09-30 2007-04-12 Adolf Würth GmbH & Co. KG Threaded bush, method for renewing a screw thread and tool used for that purpose
WO2007104794A1 (en) * 2006-03-15 2007-09-20 Be-Inventive Limited Fixing apparatus and method
EP2003349A1 (en) * 2007-06-14 2008-12-17 Pratt & Whitney Rocketdyne, Inc. Locking fastening apparatus
WO2009092355A1 (en) * 2008-01-24 2009-07-30 Acument Gmbh & Co Ohg Threaded insert and vehicle component
GB2465566A (en) * 2008-11-20 2010-05-26 David Bird Wall plug
CN103671424A (en) * 2013-12-03 2014-03-26 贵阳永青仪电科技有限公司 Stop countersunk head self-tapping screw with threaded hole
DE102013215291A1 (en) 2013-08-02 2015-02-05 Ims-Verbindungstechnik Gmbh & Co. Kg Threaded bush for screwing in
CN104632838A (en) * 2015-01-30 2015-05-20 无锡市曙光高强度紧固件有限公司 High-strength double-screw bolt for pressure container
DE102016200958A1 (en) * 2016-01-25 2017-07-27 Bayerische Motoren Werke Aktiengesellschaft Insertion insert for integration into a semifinished fiber product
IT201800004728A1 (en) * 2018-04-19 2019-10-19 CLAMPING DEVICE.

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668818A (en) * 1950-08-11 1952-03-19 Eibes Kerb Konus Gmbh Improvements in or relating to self-tapping screws
GB780901A (en) * 1954-08-09 1957-08-07 Joseph Rosan Self-tapping fastener
GB837038A (en) * 1957-08-03 1960-06-09 Bruce & Brown Ltd Screw threaded members
GB850396A (en) * 1956-11-23 1960-10-05 Groov Pin Corp Improvements in self-tapping screwed insert-bushes
GB896595A (en) * 1958-05-09 1962-05-16 Tappex Thread Inserts Ltd Improvements in self-tapping or thread cutting screw threaded members
EP0109528A1 (en) * 1982-11-23 1984-05-30 Kerb-Konus-Vertriebs-GmbH Self-tapping threaded insert

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2455885A (en) * 1945-10-01 1948-12-07 Erich G Theurer Screw fastening
DE2136832A1 (en) * 1971-07-23 1973-02-01 Eibes Kerb Konus Gmbh SELF-TAPPING THREADED SOCKET FOR INSERTION IN METALLIC OR NON-METALLIC COMPONENTS
DE3626172A1 (en) * 1986-08-01 1988-02-04 Precision Fasteners Self-tapping threaded insert

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB668818A (en) * 1950-08-11 1952-03-19 Eibes Kerb Konus Gmbh Improvements in or relating to self-tapping screws
GB780901A (en) * 1954-08-09 1957-08-07 Joseph Rosan Self-tapping fastener
GB850396A (en) * 1956-11-23 1960-10-05 Groov Pin Corp Improvements in self-tapping screwed insert-bushes
GB837038A (en) * 1957-08-03 1960-06-09 Bruce & Brown Ltd Screw threaded members
GB896595A (en) * 1958-05-09 1962-05-16 Tappex Thread Inserts Ltd Improvements in self-tapping or thread cutting screw threaded members
EP0109528A1 (en) * 1982-11-23 1984-05-30 Kerb-Konus-Vertriebs-GmbH Self-tapping threaded insert

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006094749A1 (en) * 2005-03-07 2006-09-14 Boehl Harald Clamping sleeve and clamp connection
WO2007039154A1 (en) * 2005-09-30 2007-04-12 Adolf Würth GmbH & Co. KG Threaded bush, method for renewing a screw thread and tool used for that purpose
WO2007104794A1 (en) * 2006-03-15 2007-09-20 Be-Inventive Limited Fixing apparatus and method
EP2423517A1 (en) * 2006-03-15 2012-02-29 Cawston Field IP Limited Fixing apparatus and method
EP2003349A1 (en) * 2007-06-14 2008-12-17 Pratt & Whitney Rocketdyne, Inc. Locking fastening apparatus
US7922433B2 (en) 2007-06-14 2011-04-12 Pratt & Whitney Rocketdyne, Inc. Locking fastening apparatus
WO2009092355A1 (en) * 2008-01-24 2009-07-30 Acument Gmbh & Co Ohg Threaded insert and vehicle component
US8376677B2 (en) 2008-01-24 2013-02-19 Acument Gmbh & Co. Ohg Threaded insert and vehicle component
GB2465566B (en) * 2008-11-20 2013-01-23 David Bird Threaded plastic wall plug
GB2465566A (en) * 2008-11-20 2010-05-26 David Bird Wall plug
DE102013215291A1 (en) 2013-08-02 2015-02-05 Ims-Verbindungstechnik Gmbh & Co. Kg Threaded bush for screwing in
EP2857699A1 (en) 2013-08-02 2015-04-08 IMS-Verbindungstechnik GmbH & Co. KG Screw-in threaded bush
CN103671424A (en) * 2013-12-03 2014-03-26 贵阳永青仪电科技有限公司 Stop countersunk head self-tapping screw with threaded hole
CN103671424B (en) * 2013-12-03 2017-01-25 贵阳永青仪电科技有限公司 Stop countersunk head self-tapping screw with threaded hole
CN104632838A (en) * 2015-01-30 2015-05-20 无锡市曙光高强度紧固件有限公司 High-strength double-screw bolt for pressure container
DE102016200958A1 (en) * 2016-01-25 2017-07-27 Bayerische Motoren Werke Aktiengesellschaft Insertion insert for integration into a semifinished fiber product
IT201800004728A1 (en) * 2018-04-19 2019-10-19 CLAMPING DEVICE.

Also Published As

Publication number Publication date
FR2653839B1 (en) 1994-10-07
IT1240563B (en) 1993-12-17
IT9067828A1 (en) 1992-04-26
FR2653839A1 (en) 1991-05-03
IT9067828A0 (en) 1990-10-26
GB9023743D0 (en) 1990-12-12
GB2237615B (en) 1993-12-01

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20011101