EP0322490B1 - Outil pour enlever un moyen de fixation fileté - Google Patents

Outil pour enlever un moyen de fixation fileté Download PDF

Info

Publication number
EP0322490B1
EP0322490B1 EP87311548A EP87311548A EP0322490B1 EP 0322490 B1 EP0322490 B1 EP 0322490B1 EP 87311548 A EP87311548 A EP 87311548A EP 87311548 A EP87311548 A EP 87311548A EP 0322490 B1 EP0322490 B1 EP 0322490B1
Authority
EP
European Patent Office
Prior art keywords
sleeve
section
broach
cross
tool
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP87311548A
Other languages
German (de)
English (en)
Other versions
EP0322490A1 (fr
Inventor
Michael Tauber
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.)
Safety Socket Screw Corp
Original Assignee
Safety Socket Screw Corp
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
Priority to US07/060,958 priority Critical patent/US4716793A/en
Application filed by Safety Socket Screw Corp filed Critical Safety Socket Screw Corp
Priority to DE87311548T priority patent/DE3787025T2/de
Priority to ES87311548T priority patent/ES2044961T3/es
Priority to EP87311548A priority patent/EP0322490B1/fr
Priority to AT87311548T priority patent/ATE92829T1/de
Publication of EP0322490A1 publication Critical patent/EP0322490A1/fr
Application granted granted Critical
Publication of EP0322490B1 publication Critical patent/EP0322490B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
    • B25B23/005—Screw guiding means

Definitions

  • This invention relates to a tool utilised to assist in the removal of fasteners of the type having a head with a recessed socket from a threaded bore when the recessed socket has become so damaged that a normal tool is incapable of insertion and engagement during the attempt to remove the same.
  • a tool for the removal of fasteners of the type having a head with an undamaged recessed socket is known from GB-1029357.
  • This tool comprises an hexagonal broach sized to fit closely into the recessed socket which has a corresponding hexagonal shape.
  • a sleeve is mounted over the broach and has inner surfaces configured to correspond to the section of the broach so that the sleeve can not be rotated with respect to the broach but can be moved axially.
  • the exterior surface of the sleeve is of hexagon section so that a spanner can readily be applied to the sleeve to improve the torque applicable to the sleeve.
  • a tool for removing a threaded fastener from a threaded bore the fastener being of the type having a head with a recessed socket therein and said socket being so damaged that a broach of the predetermined cross-section for the socket is incapable of non-rotational engagement with the socket
  • said tool comprising a sleeve having a bore therethrough; an elongate broach of polygonal cross-section extending through the bore in the sleeve; the cross-section of the bore in the sleeve being such as to permit relative axial movement between the sleeve and the broach but to prevent relative angular rotation therebetween when a turning force is applied to the sleeve; characterised in that said sleeve has a projection of a cross section less than the cross section of the sleeve projecting concentrically and longitudinally therefrom at one end to abut against the head of a countersunk
  • the broach before its forcible insertion into the recessed socket of the fastener head be in longitudinal alignment with the shank of the fastener.
  • the sleeve is slidably moved along the broach so that it may either receive in its receptable end the head of the fastener or, alternatively, in the case of a countersunk fastener, be projected into the countersunk bore for flat facial abutment with the exposed complementary flat surface of the head of the fastener. In either of these engagements, the sleeve will function to position and maintain the broach in proper longitudinal alignment during the period of its forceful insertion into the stripped socket of the head of the fastener.
  • the sleeve by reason of its hexagonal cross-section, is adapted to be readily gripped by a tool, such as a wrench, for imparting rotation to the fastener through the broach.
  • the tool 10 of this invention includes an elongated polygonal broach 11 and a polygonal sleeve 12.
  • the sleeve 12 is provided with a centre bore 13, the cross-section of which resembles the polygonal cross-section of the broach 11 so that such sleeve 12 is freely slidable longitudinally on the broach 11.
  • the sleeve 12 has one end 14 recessed as at 15, with the recess 15 having open communication with the internal bore 13 of the sleeve 12. It should be noted that the end recess 15 of the sleeve 12 is normally circular in cross-section and of a diameter greater than that of the centre bore 13.
  • the opposite end 16 of sleeve 12 is formed to provide a longitudinally circular projection forming an insert head 17. It should again be noted that the counter bore 13 extends throughout the length of the insert end 17 by reason of the fact that the diameter of the insert 17 is greater than that of the bore 13.
  • the sleeve 12 When the tool is used to extract a countersunk hex head fastener 18, as illustrated in Figure 4, the sleeve 12 is positioned such that its insert end 17 projects into the counter bore 19 and sits in facial contact upon the exposed flat head 20 of the fastener 18. In this position, the broach 11 will be in substantial longitudinal alignment with the shank 21 as well as the hex socket 22 formed in the head 20 of the fastener 18. As the sleeve 12 holds the broach in such alignment, the broach can be forcibly inserted into the stripped hex socket 22 formed in the flat head 20 of the fastener 18. This forceful insertion of the broach 11 may be accomplished by striking the free standing exposed opposite end with a tool, such as a hammer and the like.
  • a tool such as a hammer and the like.
  • a suitable tool such as an adjustable wrench, may be clamped upon the sleeve 12 for rotating it, as well as the broach, in an unthreading rotational direction which will be imparted to the fastener 18 so as to effect removal of the same.
  • the tool 10 of this invention is shown in application upon the exposed head 23 of a hex head fastener 24.
  • the opposite end of the sleeve 12 is aligned with the fastener 24 so that the head 23 of the fastener is received within the recess 15 formed in the end 14 of the sleeve 12.
  • the purpose, function and operation of the co-operating broach 11 and sleeve 12 are similar to that previously described.
  • the tool may be made in sizes to correspond to the commercially available head fasteners such that the broach 11 will always possess a configurated diameter slightly larger than the recessed socket in the head of the fastener.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Drilling And Boring (AREA)
  • Gripping On Spindles (AREA)
  • Milling, Broaching, Filing, Reaming, And Others (AREA)

Claims (5)

  1. Outil pour enlever un moyen de fixation fileté vissé dans un trou taraudé, ledit moyen fileté étant du type présentant une tête avec un trou borgne et dans lequel ledit trou borgne est endommagé de sorte qu'une broche, ayant une section pré-déterminée correspondant à celle du trou borgne et engagée dans celui-ci, tourne par rapport à ladite tête, ledit outil (10) étant du type comprenant un manchon (12) avec un conduit (13), une broche polygonale (11) allongée ayant une section polygonale et engagée dans le conduit (13), la section dudit conduit (13) étant telle qu'elle permet un mouvemement relatif axial entre le manchon 12 et la broche (11) mais qu'elle s'oppose à une rotation angulaire de ces deux éléments l'un par rapport à l'autre lorsqu'une force de rotation est appliquée sur le manchon (12), caractérisé en ce que ledit manchon (12) comporte un prolongement (17) ayant une section inférieure à celle du manchon (12) et s'étendant coaxialement à celui-ci à une extrémité (16), ledit prolongement (17) étant destiné à porter contre la tête (20) du dispositif d'assemblage logé dans un fraisage (19), tandis qu'à son autre extrémité (14), ledit manchon (12) est pourvu d'un logement concentrique (15) destiné à coiffer une tête (23) en saillie du dispositif d'assemblage (24), le prolongement (17) et le logement (15) étant destinés à permettre d'aligner la broche (11) avec le trou borgne (22) dudit dispositif fileté d'assemblage, la section de la broche (11) étant légèrement plus grande que la section prédéterminée de la broche afin que les extrémités de la broche (11) puissent être engagées à force dans le trou borgne endommagé de manière, qu'une fois mise en place, ladite broche (11) ne puisse tourner par rapport audit trou borgne.
  2. Outil, selon la revendication 1, caractérisé en ce que le conduit (13) du manchon (12) a une section polygonale correspondant au contour périphérique de la broche.
  3. Outil, selon la revendication 1 ou 2, caractérisé en ce que le logement (15) de l'extrémité correspondante (14) du manchon (12) présente une section circulaire.
  4. Outil, suivant l'une quelconque des revendications précédentes, caractérisé en ce que le manchon (12) présente une surface latérale périphérique ayant une section polygonale.
  5. Outil, suivant l'une quelconque des revendications précédentes, caractérisé en ce que le prolongement (17) a une section circulaire.
EP87311548A 1985-12-20 1987-12-31 Outil pour enlever un moyen de fixation fileté Expired - Lifetime EP0322490B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US07/060,958 US4716793A (en) 1985-12-20 1987-06-10 Polygonal tool for removal of stripped hex head fasteners
DE87311548T DE3787025T2 (de) 1987-12-31 1987-12-31 Werkzeug zum Entfernen von mit Gewinde versehenen Befestigungsmitteln.
ES87311548T ES2044961T3 (es) 1987-12-31 1987-12-31 Una herramienta para suprimir un medio de fijacion roscado.
EP87311548A EP0322490B1 (fr) 1987-12-31 1987-12-31 Outil pour enlever un moyen de fixation fileté
AT87311548T ATE92829T1 (de) 1987-12-31 1987-12-31 Werkzeug zum entfernen von mit gewinde versehenen befestigungsmitteln.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP87311548A EP0322490B1 (fr) 1987-12-31 1987-12-31 Outil pour enlever un moyen de fixation fileté

Publications (2)

Publication Number Publication Date
EP0322490A1 EP0322490A1 (fr) 1989-07-05
EP0322490B1 true EP0322490B1 (fr) 1993-08-11

Family

ID=8198170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87311548A Expired - Lifetime EP0322490B1 (fr) 1985-12-20 1987-12-31 Outil pour enlever un moyen de fixation fileté

Country Status (4)

Country Link
EP (1) EP0322490B1 (fr)
AT (1) ATE92829T1 (fr)
DE (1) DE3787025T2 (fr)
ES (1) ES2044961T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212180C2 (de) * 1992-03-26 1998-05-07 Audi Ag Anordnung zur Befestigung eines Fahrwerkteils
FR2954917B1 (fr) * 2010-01-07 2012-03-23 Peugeot Citroen Automobiles Sa Dispositif de vissage/devissage axial de vis dans un renfoncement d'un equipement, et visseuse associee

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2121197A (en) * 1936-07-01 1938-06-21 Ridge Tool Company Of Elyria Screw extractor
US3288002A (en) * 1963-11-12 1966-11-29 Mankovitz Robert Combination polygonal wrench with adjustably positioned socket and ratchet wrench
US3587363A (en) * 1968-10-14 1971-06-28 Monsanto Co Ball plunger installing and removal tool
CH593116A5 (en) * 1975-07-08 1977-11-30 Stoba Ag Tool for releasing defective socket head screws - has conical end guide sleeve for impact socket spanner
DE3123112A1 (de) * 1981-06-11 1982-12-30 Joachim 6581 Schauren Laudes "vorrichtung zum ein- und ausschrauben einer zylinderschraube mit innensechskant"
US4503737A (en) * 1983-04-11 1985-03-12 Digiovanni Donald Threaded fastener removing tool
US4604917A (en) * 1985-03-12 1986-08-12 Eli Polonsky Easy-out threaded fastener extractor

Also Published As

Publication number Publication date
ATE92829T1 (de) 1993-08-15
ES2044961T3 (es) 1994-01-16
EP0322490A1 (fr) 1989-07-05
DE3787025T2 (de) 1994-02-17
DE3787025D1 (de) 1993-09-16

Similar Documents

Publication Publication Date Title
US7441483B2 (en) Tamper-resistant fastener and method and tool for use with same
EP0216354B1 (fr) Outil conique pour l'enlèvement et/ou l'installation de boulons
US10967488B2 (en) Advanced holding apparatus
US5123310A (en) Socket for turning fastener heads having deformed head surfaces
EP4378627A2 (fr) Appareil de maintien avancé
EP4094892A1 (fr) Appareil de support avancé
US5269208A (en) Tamper-proof fastener and a driver tool therefor
US5664467A (en) Adjustable socket
US4350064A (en) Auxiliary tool kit for a socket wrench set
US4862773A (en) Collet type fastener removal tool
US20210220977A1 (en) Advanced Holding Apparatus
CA1139595A (fr) Outil electromecanique de serrage a limiteur de couple
US11590637B2 (en) Methods and apparatuses for extracting and dislodging fasteners
CA2169052A1 (fr) Outil servant a tourner des elements d'assemblage, procede connexe, et elements d'assemblage utilises a cette fin
US4716793A (en) Polygonal tool for removal of stripped hex head fasteners
EP0322490B1 (fr) Outil pour enlever un moyen de fixation fileté
US20040182206A1 (en) Noback bolt
EP0083860B1 (fr) Accessoire entraîné pour machine à percer ou similaire
US20010004858A1 (en) Fastener extractor
US4446763A (en) Mortice cylinder lock wrench structures
GB2112488A (en) Improvements in or relating to threaded fastener and nut assemblies and mounting tools therefor
US4741228A (en) Stud extractor
CA1278444C (fr) Outil polygone pour l'extraction de vis a tete hexagonale au filetage arrache
US20230256576A1 (en) Methods and Apparatuses for Extracting and Dislodging Fasteners
US20240139921A1 (en) Fastener Extractor and Dislodging Tool Apparatus

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19900103

17Q First examination report despatched

Effective date: 19910212

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE ES FR GB GR IT LI LU NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19930811

REF Corresponds to:

Ref document number: 92829

Country of ref document: AT

Date of ref document: 19930815

Kind code of ref document: T

ET Fr: translation filed
REF Corresponds to:

Ref document number: 3787025

Country of ref document: DE

Date of ref document: 19930916

ITF It: translation for a ep patent filed

Owner name: STUDIO CONS. BREVETTUAL

REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3008942

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19931208

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19931221

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 19931230

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19931231

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19931231

Year of fee payment: 7

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2044961

Country of ref document: ES

Kind code of ref document: T3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19940127

Year of fee payment: 7

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Effective date: 19940701

26N No opposition filed
NLV4 Nl: lapsed or anulled due to non-payment of the annual fee
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19941220

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 19941223

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19941228

Year of fee payment: 8

REG Reference to a national code

Ref country code: GR

Ref legal event code: MM2A

Free format text: 3008942

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Effective date: 19941231

Ref country code: CH

Effective date: 19941231

Ref country code: BE

Effective date: 19941231

Ref country code: AT

Effective date: 19941231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950101

EAL Se: european patent in force in sweden

Ref document number: 87311548.9

BERE Be: lapsed

Owner name: SAFETY SOCKET SCREW CORP.

Effective date: 19941231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19950831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

EUG Se: european patent has lapsed

Ref document number: 87311548.9

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19951231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19960101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19951231

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19960903

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 19970113

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20051231