EP0504331B1 - Fluid-operated wrench - Google Patents

Fluid-operated wrench Download PDF

Info

Publication number
EP0504331B1
EP0504331B1 EP91908547A EP91908547A EP0504331B1 EP 0504331 B1 EP0504331 B1 EP 0504331B1 EP 91908547 A EP91908547 A EP 91908547A EP 91908547 A EP91908547 A EP 91908547A EP 0504331 B1 EP0504331 B1 EP 0504331B1
Authority
EP
European Patent Office
Prior art keywords
ratchet
threaded connector
housing
axial side
engaging means
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
EP91908547A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0504331A4 (en
EP0504331A1 (en
Inventor
John K. Junkers
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP0504331A1 publication Critical patent/EP0504331A1/en
Publication of EP0504331A4 publication Critical patent/EP0504331A4/en
Application granted granted Critical
Publication of EP0504331B1 publication Critical patent/EP0504331B1/en
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
    • B25B23/0078—Reaction arms
    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/46—Spanners; Wrenches of the ratchet type, for providing a free return stroke of the handle
    • 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
    • B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
    • B25B21/004—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type
    • B25B21/005—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose of the ratchet type driven by a radially acting hydraulic or pneumatic piston

Definitions

  • the present invention relates to fluid-operated wrenches of the type disclosed in the pre-characterising portion of the ensuing claim 1.
  • Hydraulic wrenches of the above-mentioned general type are known in the art.
  • One such wrench is disclosed in my GB-A-2028204 which has a housing with a fluid-operated drive means and a ratchet turnably mounted in the housing and connected with the drive means to be turned.
  • the ratchet is a one-way ratchet and has a first engaging means which is connected to the ratchet on one side of the housing to loosen a threaded connector and is connected to the ratchet on another side of the housing to tighten the threaded connector.
  • a reaction means is provided to transfer a reaction force to a stationary object during the tightening or loosening, the reaction means of this reference being attached to the second housing portion which accommodates the fluid-operated drive.
  • a fluid-operated wrench in accordance with the present invention has a fluid-operated drive 1.
  • the drive includes, as is known, a cylinder 2 (forming a rear portion of the housing) and a piston 3 movable in the cylinder 2 and provided with a piston rod 4.
  • Two side plates 43 which form a front portion of the housing are connected in a known manner with the cylinder 2 of the drive and form together with the cylinder a housing of the tool.
  • the fluid operated tool further has a ratchet-pawl mechanism which includes a ratchet 44 (see Figure 2) having an axis and a pawl 41 engaging the ratchet through interengaging formations 45 and 46, respectively, which can be formed as splines, sawteeth etc., to permit a longitudinal displacement of the ratchet 44 relative to the pawl 41 in an axial direction of the ratchet.
  • the ratchet 44 is provided with an inner opening which is preferably non-round and which has a plurality of engaging formations, for example splines.
  • the pawl 41 is held by a drive plate 42 which is sandwiched between two side plates 43 forming the front of the housing.
  • the upper end of the drive plate is pivotally connected with the end of the piston rod 4 of the drive 1, for example by a pin 12.
  • the side plates 43 are also connected with one another for example by a pin 13.
  • the fluid-operated tool includes an engaging element formed by a rod 47 which is displaceable axially through the drive ratchet 44 so that its one end or another end extend outwardly beyond the respective side of the tool.
  • the tool also includes reaction means 24' including, on each side of the ratchet 44, a reaction sleeve 48 arranged on a drive bushing 49 and having outer splines 50 and two depressions 51 spaced from one another in an axial direction. A portion of each sleeve 48 is inserted in an opening 43' of the side plate 43, and the outer splines 50 engage with inner splines 43'' of the opening 43'.
  • the reaction means further comprises a reaction socket 52, formed as a separate member, which is mounted on the sleeve 48 by interengagement of the splines 53 of the reaction sleeve with the splines 50 of the sleeve 48.
  • the sleeve 48 is retained on the side plate 43 by a retainer 54, while the reaction socket 52 is retained on the reaction sleeve 48 by a retainer 55 engaging in respective depressions 51.
  • a turning socket 56 is turnably located inside the reaction socket 52 and its splines 57 engage the splines of the rod 47.
  • the drive ratchet 44 and the drive bushings 49 at both sides of the tool have inner engaging formations for example splines which engage the outer engaging formations, for example splines, of the rod 47, so that the rod can displace axially without turning relative to the ratchet and the bushing.
  • Both ends of the rod 47 have a shape required for engaging a threaded connector to be tightened or loosened.
  • the ends can be provided with a hexagonal opening, hexagonal head, or a shape permitting attachment of a socket for engaging with a threaded connector, etc..
  • the rod 47 When it is necessary, for example, to tighten a threaded connector, the rod 47 is pushed axially to the right and is fixed in this position, and the drive ratchet 44 with the reaction sleeve 48 is also pushed axially to the right (see the position shown in Figure 2).
  • the rod 47 When it is necessary, however, to loosen a threaded connector, the rod 47 is pushed axially to the left so that its left end extends outwardly beyond the left side plate 43.
  • the drive ratchet 44 together with the sleeve 48 and the drive bushing 49 is also pushed axially to the left, so that the left sleeve 48 and the drive bushing 49 extend outwardly beyond the left plate 43.
  • the reaction socket 52 with the turning socket 56 are removed from the right sleeve 48 and placed on the left sleeve 48 at the left side of the ratchet 44 of the tool.
  • a retainer 61 prevents axial withdrawal of the interior parts of the tool from the housing.
  • the retainer 61 can include an inner sleeve 62 retained by balls 63 in the central bore of the rod 47 and a nut 64 screwed on the sleeve 62 and also screwable in the threaded end portion of the opening in each bushing 49.
  • the retainer 61 is arranged at the left side, and vice versa .
  • the retainer 61 rotates together with the ratchet 44, the bushings 49 and the rod 47 relative to the side plates 43.
  • reaction socket 52 It is well known that during the operation of the fluid-operated tools, it is necessary to abut with a reaction element against an object for example a neighbouring nut or bolt, flange, etc. In the inventive tool it is performed by the reaction socket 52.
  • the reaction socket 52 can react against any adjacent stationary object.
  • the reaction socket 52 can be formed as an arm so that it can abut against the adjacent nut.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Pens And Brushes (AREA)
  • Forklifts And Lifting Vehicles (AREA)
  • Bathtubs, Showers, And Their Attachments (AREA)
  • Arrangement And Driving Of Transmission Devices (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Switches With Compound Operations (AREA)
EP91908547A 1990-10-08 1991-04-19 Fluid-operated wrench Expired - Lifetime EP0504331B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US61116890A 1990-10-08 1990-10-08
US611168 1990-10-08
PCT/US1991/002795 WO1992005917A1 (en) 1990-10-08 1991-04-19 Fluid-operated wrench

Publications (3)

Publication Number Publication Date
EP0504331A1 EP0504331A1 (en) 1992-09-23
EP0504331A4 EP0504331A4 (en) 1992-11-19
EP0504331B1 true EP0504331B1 (en) 1998-07-15

Family

ID=24447900

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91908547A Expired - Lifetime EP0504331B1 (en) 1990-10-08 1991-04-19 Fluid-operated wrench

Country Status (11)

Country Link
EP (1) EP0504331B1 (ko)
JP (1) JPH0755453B2 (ko)
KR (1) KR970001153B1 (ko)
AT (1) ATE168308T1 (ko)
AU (1) AU641502B2 (ko)
BR (1) BR9105922A (ko)
DE (1) DE69129799T2 (ko)
DK (1) DK0504331T3 (ko)
ES (1) ES2118083T3 (ko)
WO (1) WO1992005917A1 (ko)
ZA (1) ZA915517B (ko)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2349981B2 (es) * 2006-09-12 2011-12-12 Unex Corporation Herramienta de torsion para apretar y aflojar conexiones, y metodo para apretar y aflojar las mismas.
US7497147B2 (en) * 2006-09-12 2009-03-03 Unex Corporation Torque tool for tightening or loosening connections, and method of tightening or loosening the same
US7735397B2 (en) * 2007-06-01 2010-06-15 Junkers John K Fluid operated torque tool for and a method of tightening a nut on a plate on railroad crossings
US9492913B2 (en) * 2011-08-26 2016-11-15 HYTORC Division Unex Corporation Apparatus for tightening threaded fasteners

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5015700B1 (ko) * 1971-02-25 1975-06-06
US3941017A (en) * 1975-04-14 1976-03-02 Davenport Tool Co. Plier type ratchet wrench
US4201099B1 (en) * 1978-08-14 1993-12-07 K. Junkers John Hydraulic wrench
US4448096A (en) * 1980-12-22 1984-05-15 Collins Bobby W Flutter lift for torque wrench
US4706527A (en) * 1984-10-22 1987-11-17 Junkers John K Fluid operated wrench for tightening or loosening a threaded connector
GB8701194D0 (en) * 1987-01-20 1987-02-25 Hedley Purvis Ltd Torque wrenches
US4846028A (en) * 1987-10-06 1989-07-11 Junkers John K Fluid-operated wrench
GB8902659D0 (en) * 1989-02-07 1989-03-30 Hedley Purvis Ltd Improved hydraulic torque wrench

Also Published As

Publication number Publication date
EP0504331A4 (en) 1992-11-19
JPH05504918A (ja) 1993-07-29
EP0504331A1 (en) 1992-09-23
KR920702273A (ko) 1992-09-03
WO1992005917A1 (en) 1992-04-16
KR970001153B1 (ko) 1997-01-29
AU641502B2 (en) 1993-09-23
JPH0755453B2 (ja) 1995-06-14
ATE168308T1 (de) 1998-08-15
ES2118083T3 (es) 1998-09-16
AU7760291A (en) 1992-04-28
DK0504331T3 (da) 1999-04-19
DE69129799D1 (de) 1998-08-20
DE69129799T2 (de) 1998-11-19
BR9105922A (pt) 1993-03-30
ZA915517B (en) 1992-05-27

Similar Documents

Publication Publication Date Title
US6152243A (en) Universal torque power tool
US4825730A (en) Fluid operated wrench
EP1063060B1 (en) Power tool
US4671142A (en) Fluid operated wrench
US7497147B2 (en) Torque tool for tightening or loosening connections, and method of tightening or loosening the same
USRE33951E (en) Fluid operated wrench
US5140874A (en) Fluid-operated wrench
US4706526A (en) Fluid operated wrench
US5016502A (en) Power wrench
US6802235B2 (en) Fluid-operated torque wrench
US4846028A (en) Fluid-operated wrench
US5005447A (en) Torque wrench
EP0504331B1 (en) Fluid-operated wrench
US4406185A (en) Universally usable hydraulic wrench for simultaneously tightening or loosening two threaded connectors
US4663997A (en) Fluid-operated wrench
EP0386355A1 (en) Power wrench
EP0432884A2 (en) Power wrench
US4916986A (en) Fluid operated wrench
EP0324050A1 (en) Torque Wrench
WO1997000759A1 (en) Unibody hydraulic torque wrench
AU2002100423A4 (en) Ratchet wrench with interchangeable toothed-socket-spanner
KR0178689B1 (ko) 나사부품 체결용 공구
CZ1570U1 (cs) Klíč na nástroje se čtyřhrannou stopkou

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

17P Request for examination filed

Effective date: 19920609

AK Designated contracting states

Kind code of ref document: A1

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

A4 Supplementary search report drawn up and despatched

Effective date: 19920929

AK Designated contracting states

Kind code of ref document: A4

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

17Q First examination report despatched

Effective date: 19930830

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

ITF It: translation for a ep patent filed
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 DK ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 168308

Country of ref document: AT

Date of ref document: 19980815

Kind code of ref document: T

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: A. BRAUN, BRAUN, HERITIER, ESCHMANN AG PATENTANWAE

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 69129799

Country of ref document: DE

Date of ref document: 19980820

ET Fr: translation filed
REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2118083

Country of ref document: ES

Kind code of ref document: T3

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

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

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

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

Ref country code: GR

Payment date: 20050411

Year of fee payment: 15

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

Ref country code: SE

Payment date: 20050427

Year of fee payment: 15

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

Ref country code: BE

Payment date: 20050429

Year of fee payment: 15

Ref country code: AT

Payment date: 20050429

Year of fee payment: 15

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

Ref country code: LU

Payment date: 20050519

Year of fee payment: 15

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

Ref country code: AT

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

Effective date: 20060419

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

Ref country code: SE

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

Effective date: 20060420

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: 20060430

Ref country code: BE

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

Effective date: 20060430

EUG Se: european patent has lapsed
BERE Be: lapsed

Owner name: *JUNKERS JOHN K.

Effective date: 20060430

REG Reference to a national code

Ref country code: CH

Ref legal event code: PFA

Owner name: JUNKERS, JOHN K.

Free format text: JUNKERS, JOHN K.#7 ARROWHEAD LANE#SADDLE RIVER NEW JERSEY 07540 (US) -TRANSFER TO- JUNKERS, JOHN K.#7 ARROWHEAD LANE#SADDLE RIVER NEW JERSEY 07540 (US)

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 NON-PAYMENT OF DUE FEES

Effective date: 20061102

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

Ref country code: DK

Payment date: 20100413

Year of fee payment: 20

Ref country code: ES

Payment date: 20100406

Year of fee payment: 20

Ref country code: FR

Payment date: 20100520

Year of fee payment: 20

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

Ref country code: NL

Payment date: 20100429

Year of fee payment: 20

Ref country code: DE

Payment date: 20100622

Year of fee payment: 20

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

Ref country code: CH

Payment date: 20100714

Year of fee payment: 20

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

Ref country code: GB

Payment date: 20100427

Year of fee payment: 20

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

Effective date: 20100419

REG Reference to a national code

Ref country code: DE

Ref legal event code: R071

Ref document number: 69129799

Country of ref document: DE

REG Reference to a national code

Ref country code: NL

Ref legal event code: V4

Effective date: 20110419

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DK

Ref legal event code: EUP

REG Reference to a national code

Ref country code: GB

Ref legal event code: PE20

Expiry date: 20110418

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

Ref country code: IT

Payment date: 20100429

Year of fee payment: 20

PGRI Patent reinstated in contracting state [announced from national office to epo]

Ref country code: IT

Effective date: 20110616

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

Ref country code: GB

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110418

Ref country code: NL

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110419

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

Ref country code: DE

Free format text: LAPSE BECAUSE OF EXPIRATION OF PROTECTION

Effective date: 20110419

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 EXPIRATION OF PROTECTION

Effective date: 20110420