EP0220639A3 - Hydraulic transmission tube bending device that can be operated with a single hand - Google Patents

Hydraulic transmission tube bending device that can be operated with a single hand Download PDF

Info

Publication number
EP0220639A3
EP0220639A3 EP86114499A EP86114499A EP0220639A3 EP 0220639 A3 EP0220639 A3 EP 0220639A3 EP 86114499 A EP86114499 A EP 86114499A EP 86114499 A EP86114499 A EP 86114499A EP 0220639 A3 EP0220639 A3 EP 0220639A3
Authority
EP
European Patent Office
Prior art keywords
bending device
transmission tube
reservoir
hydraulic transmission
tube bending
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
EP86114499A
Other versions
EP0220639A2 (en
EP0220639B1 (en
Inventor
Giorgio Vezzani
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.)
Cbc SpA
Original Assignee
Cbc SpA
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 Cbc SpA filed Critical Cbc SpA
Priority to AT86114499T priority Critical patent/ATE54585T1/en
Publication of EP0220639A2 publication Critical patent/EP0220639A2/en
Publication of EP0220639A3 publication Critical patent/EP0220639A3/en
Application granted granted Critical
Publication of EP0220639B1 publication Critical patent/EP0220639B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
    • B25B7/12—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears
    • B25B7/126—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools involving special transmission means between the handles and the jaws, e.g. toggle levers, gears with fluid drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
    • B21D7/063—Pliers with forming dies

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)
  • Arrangement Or Mounting Of Control Devices For Change-Speed Gearing (AREA)
  • Tubes (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)

Abstract

Hand operable hydraulic transmission tube bending device whose matrix-die holding bar (1) is moved by a fluid (oil) through a hydraulic pump. The reservoir (11) of the fluid is formed directly in the arm (14), on which the support (15) of counterdies (16) is installed, one of the walls of said reservoir being sealingly deformable. The pump, the conduits, the reservoir and the chamber in which the matrix-die holding bar slides form a closed circuit, the fluid arriving from the pump to the head (3) of the matrix-die holding bar through a conduit that is formed in the fixed part of the handle and which builds up the outer part of the handle (7) and is concentric with the cylinder (5) in which said bar slides.
EP86114499A 1985-10-31 1986-10-20 Hydraulic transmission tube bending device that can be operated with a single hand Expired - Lifetime EP0220639B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86114499T ATE54585T1 (en) 1985-10-31 1986-10-20 ONE-HAND HYDRAULICALLY POWERED BENDER.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT8534927U IT207711Z2 (en) 1985-10-31 1985-10-31 HYDRAULIC TRANSMISSION PIPE BENDING UNIT OPERATED WITH ONE HAND
IT3492785U 1985-10-31

Publications (3)

Publication Number Publication Date
EP0220639A2 EP0220639A2 (en) 1987-05-06
EP0220639A3 true EP0220639A3 (en) 1988-09-07
EP0220639B1 EP0220639B1 (en) 1990-07-18

Family

ID=11240966

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114499A Expired - Lifetime EP0220639B1 (en) 1985-10-31 1986-10-20 Hydraulic transmission tube bending device that can be operated with a single hand

Country Status (5)

Country Link
EP (1) EP0220639B1 (en)
AT (1) ATE54585T1 (en)
DE (1) DE3672747D1 (en)
ES (1) ES2016792B3 (en)
IT (1) IT207711Z2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT230365Y1 (en) * 1993-07-16 1999-06-02 Imb Srl TOOL FOR PUNCHING
IT237303Y1 (en) * 1995-11-23 2000-09-05 Cbc Spa HYDRAULIC TRANSMISSION PIPE BENDING MACHINE

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1164123A (en) * 1957-01-11 1958-10-06 Hydraulic hand gripper
GB882614A (en) * 1959-02-25 1961-11-15 Mekler Dan Improvements in or relating to hydraulic tools, adapted to be held and operated with one hand
FR2100998A1 (en) * 1970-08-04 1972-03-31 Le Breton Leslie Arthur TUBE BENDING TOOL
FR2298416A1 (en) * 1975-01-27 1976-08-20 Schmitter Erich BENDING PLIERS
CH597985A5 (en) * 1975-03-06 1978-04-28 Willy Fluckiger Pneumatic pincers for crimping eyelet onto cable
US4149381A (en) * 1977-07-13 1979-04-17 Dan Mekler Single hand operated tool
FR2421690A1 (en) * 1978-04-06 1979-11-02 Liri Costruzioni Mecc PORTABLE MANUAL DEVICE FOR BENDING TUBES, WITH REVERSIBLE BENDING ORGANS
FR2466115A1 (en) * 1979-09-24 1981-03-27 Sicame Sa Electrical connector hand-held crimping device - has lever action to pump jaws together under hydraulic fluid action and vent valve coupling hydraulic jack and reservoir
GB2073085A (en) * 1980-03-24 1981-10-14 Taiyo Hatsujyo Seisakusho Kk Hydraulic pliers for snap rings

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1164123A (en) * 1957-01-11 1958-10-06 Hydraulic hand gripper
GB882614A (en) * 1959-02-25 1961-11-15 Mekler Dan Improvements in or relating to hydraulic tools, adapted to be held and operated with one hand
FR2100998A1 (en) * 1970-08-04 1972-03-31 Le Breton Leslie Arthur TUBE BENDING TOOL
FR2298416A1 (en) * 1975-01-27 1976-08-20 Schmitter Erich BENDING PLIERS
CH597985A5 (en) * 1975-03-06 1978-04-28 Willy Fluckiger Pneumatic pincers for crimping eyelet onto cable
US4149381A (en) * 1977-07-13 1979-04-17 Dan Mekler Single hand operated tool
FR2421690A1 (en) * 1978-04-06 1979-11-02 Liri Costruzioni Mecc PORTABLE MANUAL DEVICE FOR BENDING TUBES, WITH REVERSIBLE BENDING ORGANS
FR2466115A1 (en) * 1979-09-24 1981-03-27 Sicame Sa Electrical connector hand-held crimping device - has lever action to pump jaws together under hydraulic fluid action and vent valve coupling hydraulic jack and reservoir
GB2073085A (en) * 1980-03-24 1981-10-14 Taiyo Hatsujyo Seisakusho Kk Hydraulic pliers for snap rings

Also Published As

Publication number Publication date
ES2016792B3 (en) 1990-12-01
EP0220639A2 (en) 1987-05-06
EP0220639B1 (en) 1990-07-18
DE3672747D1 (en) 1990-08-23
IT8534927V0 (en) 1985-10-31
IT207711Z2 (en) 1988-02-08
ATE54585T1 (en) 1990-08-15

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