EP0322490A1 - Outil pour enlever un moyen de fixation fileté - Google Patents

Outil pour enlever un moyen de fixation fileté Download PDF

Info

Publication number
EP0322490A1
EP0322490A1 EP87311548A EP87311548A EP0322490A1 EP 0322490 A1 EP0322490 A1 EP 0322490A1 EP 87311548 A EP87311548 A EP 87311548A EP 87311548 A EP87311548 A EP 87311548A EP 0322490 A1 EP0322490 A1 EP 0322490A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
tool
broach
fastener
bore
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
EP87311548A
Other languages
German (de)
English (en)
Other versions
EP0322490B1 (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 EP87311548A priority patent/EP0322490B1/fr
Priority to AT87311548T priority patent/ATE92829T1/de
Priority to ES87311548T priority patent/ES2044961T3/es
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 removing a threaded fastener of the type having a head with a recessed socket therein from a threaded bore comprises a sleeve having a bore therethrough; an elongate broach extending through the bore in the sleeve; the cross-section of the broach being polygonal and slightly larger than the recessed socket in the fastener whereby end portions of the broach can be forcefully projected into the recessed socket; 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; said sleeve having a projection at one end which is adapted to abut against the countersunk head of a fastener and a recess at the other end which is arranged to fit over the exposed head of a fastener, both the projection and the recess serving to align the broach with
  • 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.
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.
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.
ES87311548T ES2044961T3 (es) 1987-12-31 1987-12-31 Una herramienta para suprimir un medio de fijacion roscado.

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 true EP0322490A1 (fr) 1989-07-05
EP0322490B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212180A1 (de) * 1992-03-26 1993-09-30 Audi Ag Anordnung zur Befestigung eines Fahrwerkteiles
FR2954917A1 (fr) * 2010-01-07 2011-07-08 Peugeot Citroen Automobiles Sa Dispositif de vissage/devissage axial de vis dans un renfoncement d'un equipement, et visseuse associee

Citations (8)

* 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
GB1029357A (en) * 1963-11-12 1966-05-11 Robert Mankovitz A key spanner and socket combination
US3587363A (en) * 1968-10-14 1971-06-28 Monsanto Co Ball plunger installing and removal tool
DE2437142B1 (de) * 1974-05-30 1975-09-04 George Fresno Calif. Brase (V.St.A.) Werkzeug zum Lockern abgebrochener oder abgenutzter Verbindungsschrauben o.dgl
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

Patent Citations (8)

* 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
GB1029357A (en) * 1963-11-12 1966-05-11 Robert Mankovitz A key spanner and socket combination
US3587363A (en) * 1968-10-14 1971-06-28 Monsanto Co Ball plunger installing and removal tool
DE2437142B1 (de) * 1974-05-30 1975-09-04 George Fresno Calif. Brase (V.St.A.) Werkzeug zum Lockern abgebrochener oder abgenutzter Verbindungsschrauben o.dgl
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

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
METALWORKING PRODUCTION, vol. 110, no. 16, 20th April 1966, page 89, London, GB; O. HILLIG: "Key gets at hidden screws" *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212180A1 (de) * 1992-03-26 1993-09-30 Audi Ag Anordnung zur Befestigung eines Fahrwerkteiles
DE4212180C2 (de) * 1992-03-26 1998-05-07 Audi Ag Anordnung zur Befestigung eines Fahrwerkteils
FR2954917A1 (fr) * 2010-01-07 2011-07-08 Peugeot Citroen Automobiles Sa Dispositif de vissage/devissage axial de vis dans un renfoncement d'un equipement, et visseuse associee

Also Published As

Publication number Publication date
DE3787025D1 (de) 1993-09-16
EP0322490B1 (fr) 1993-08-11
DE3787025T2 (de) 1994-02-17
ES2044961T3 (es) 1994-01-16
ATE92829T1 (de) 1993-08-15

Similar Documents

Publication Publication Date Title
EP0930132B1 (fr) Outil pour enlever des vis uni-directionelles
US5123310A (en) Socket for turning fastener heads having deformed head surfaces
US20070207008A1 (en) Tamper-Resistant Fastener and Method and Tool for Use with Same
US5951554A (en) Screw removal system
US5058465A (en) Key holding tool for impressioning
EP3814060B1 (fr) Dispositif extracteur d'éléments de fixation
EP0110978B1 (fr) Outil permettant de saisir, commander et manipuler des elements filetes d'attache
US5664467A (en) Adjustable socket
EP0842742A2 (fr) Outil pour enlever des éléments de fixation.
EP0205147A3 (fr) Outil combiné pour pompier
JP2664052B2 (ja) バイトホルダ用締付けピン
EP4094892A1 (fr) Appareil de support avancé
EP0737122B1 (fr) Extracteur a machoire extensible pour boulons casses
US4350064A (en) Auxiliary tool kit for a socket wrench set
US20160044876A1 (en) Extractable fastener
US4296656A (en) Driver bit attachment
US4716793A (en) Polygonal tool for removal of stripped hex head fasteners
US4713990A (en) Bolt extracting tool
US4572035A (en) Tool constructions for removing frozen nuts
EP0322490A1 (fr) Outil pour enlever un moyen de fixation fileté
US4553455A (en) Nut starter with special blades
US4939959A (en) Fastener holding tool
US4434687A (en) Damaged screw remover
US20010004858A1 (en) Fastener extractor
US4106178A (en) Threaded stud driving tool

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