EP1024110A1 - Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren - Google Patents

Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren Download PDF

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Publication number
EP1024110A1
EP1024110A1 EP99125150A EP99125150A EP1024110A1 EP 1024110 A1 EP1024110 A1 EP 1024110A1 EP 99125150 A EP99125150 A EP 99125150A EP 99125150 A EP99125150 A EP 99125150A EP 1024110 A1 EP1024110 A1 EP 1024110A1
Authority
EP
European Patent Office
Prior art keywords
roller
circular blade
toothed wheel
drive assembly
levers
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
EP99125150A
Other languages
English (en)
French (fr)
Other versions
EP1024110B1 (de
Inventor
Barbara Gisolo
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
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1024110A1 publication Critical patent/EP1024110A1/de
Application granted granted Critical
Publication of EP1024110B1 publication Critical patent/EP1024110B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B67—OPENING, CLOSING OR CLEANING BOTTLES, JARS OR SIMILAR CONTAINERS; LIQUID HANDLING
    • B67B—APPLYING CLOSURE MEMBERS TO BOTTLES JARS, OR SIMILAR CONTAINERS; OPENING CLOSED CONTAINERS
    • B67B7/00—Hand- or power-operated devices for opening closed containers
    • B67B7/30—Hand-operated cutting devices
    • B67B7/34—Hand-operated cutting devices with rotatable cutters

Definitions

  • the present invention relates to a can opener with a rotating circular blade of the type used to open ordinary tin cans containing food preserves and the like.
  • the invention also relates to a method for assembling the can opener.
  • Conventional can openers having a circular blade generally include two levers made of metal plate that are pivoted in a scissor-like fashion toward one end and are provided with grip handles at the opposite ends.
  • a knurled traction roller and a circular blade are mounted, respectively on the two levers, between the ends that lie opposite to the handless and the pivoting point, in positions that are equidistant from the pivoting point; during use of the can opener, the roller and the blade interact with the edge of the like of the can to be opened.
  • the roller is connected to an actuation knob, generally by an axial pivot which is rotatably inserted into a frictionless bush associated with the respective lever.
  • Italian utility model application no. V194U000053 discloses a can opener having a flat reinforcement member fixed to the end of the lever or metal plate body that supports the roller, The reinforcement member is parallel and partially spaced relative to the lever body, so as to form a guiding slot for the corresponding end of the lever.
  • Both the circular blade and the roller are generally coupled to meshing toothed wheels to transmit the motion between the two components.
  • toothed wheels are usually mounted on the respective members with an interference mounting, by means of the pressure exerted by a screw, or by keying the toothed wheel on an axial appendage of the member.
  • These types of mounting require very precise working tolerances and a particular care in assembling. It is also required to manipulate very small and numerous parts.
  • a first drawback of conventional can openers is their high production cost also due to the fact that the assembly requires great labor and is scarcely automated.
  • a further drawback is the poor reliability of the interference connection of the toothed wheels with their respective support members.
  • the main aim o f the present invention is to eliminate the drawbacks mentioned above by providing a can opener that has a simple and economic structure and is constituted by a few and easily assembled parts.
  • a further object is that of providing an assembly method of the can opener which can be performed with automatic apparatus in a reduced time and with minimum labor.
  • a can opener comprises a pair of levers or plates that are mutually pivoted in a scissor-like fashion at one end and are provided, at the opposite end, with two handles; a can rotation drive assembly, which is mounted on one of the levers; a blade assembly with a circular blade, which is mounted on the other lever; characterised in that the drive assembly is constituted exclusively by a pair of mutually connected parts.
  • said pair is constituted by a knurled roller and by a knob provided with a connecting pivot having a threaded end.
  • the drive assembly comprises a first toothed wheel rigidly associated with said knurled roller, the blade assembly comprises a second toothed wheel rigidly associated with said circular blade.
  • the circular blade can be rigidly associated with a first toothed wheel by inserting an axial appendage of the blade in a polygonal central hole of the toothed wheel and by punching and/or reverting the appendage or protrusion.
  • the roller can be rigidly associated with a second toothed wheel by inserting an axial appendage of the roller in a polygonal central hole of the toothed wheel and by punching and/or riveting the appendage, or protrusion.
  • the configuration of the can opener according to the invention allows to considerably reduce production and assembly costs, ensuring higher reliability and strength with respect to known existing can openers.
  • the can opener according to the invention includes two levers or plates 2 and 3 made of pressed and/or drawn metal plate.
  • Levers 2 and 3 are pivoted in a scissor-like fashion at a front end by a rivet 4 and are provided, at the opposite ends, with two handles 5 and 6 that have an elongated shape to be gripped by a user.
  • levers 2 and 3 respectively rotatably support a drive assembly 7, that is suitable to interact with the edge of a can to make it rotate, and a cutting assembly 8 that includes a circular blade 9 that is meant to score the lid of the box, cooperating with the drive assembly 7.
  • a particular characteristic of the can opener resides in that the drive assembly 7 is constituted only by a pair of mutually connected members mounted on the respective lever 2.
  • drive assembly 7 is constituted by a knurled roller 10 that is connected to an actuation knob 11 by an axial pivot 12 that passes through a hole of the corresponding lever 2 and is arranged transversally to the surface thereof.
  • Pivot 12 has and end rigidly associated with know 11 and an opposite threaded end 12' engaged in an internal threading of knurled roller 10.
  • Knob 11 of a per se known type, is made of plastic and has a central body 13, in which the head of axial pivot 12 is embedded, and a pair of wings 13' radially protruding from the central body.
  • circular blade 9 is rotatably mounted on lever 3 on a rotation axis that is tilted with respect tot he axis of knurled roller 10 of drive assembly 7, so that the cutting edge of the blade grazes the outer face thereof.
  • Circular blade 9 is fixed to lever 3 by a second pivot 14 with an enlarged head and having an opposite end associated with lever 3.
  • drive assembly 7 before being mounted on lever 2, is formed by a toothed wheel 15 rigidly associated with knurled roller 10.
  • cutting assembly 8 is formed by second toothed wheel 16 rigidly associated with circular blade 9.
  • Toothed wheels 15 and 16 are shaped so as to mutually mesh, in order to simultaneously turn roller 10 and blade 9 during the actuation of knob 11 by the user.
  • Each one of toothed wheel 15 and 16 has an axial polygonal, or square, hole 17, 18 for the insertion of respective tubular protrusions, or appendages, 19 and 20 formed on knurled roller 10 and on circular blade 9 protrudes axially from them.
  • the torsional locking of toothed wheels 15 and 16, respectively on roller 10 and on blade 9, is obtained by inserting the corresponding tubular protrusions 19 and 20 in the axial boles 17 and 18 of toothed wheels 15 and 16 and by punching and/or riveting the ends of protrusions 19 and 20 so as to expand them inside the holes 17 and 18 and form respectively a roller assembly 21 and a blade assembly 22, shown in FIG.s 4 and 5.
  • FIG.s 6 and 7 illustrate a further embodiments of the can opener according to the invention, which is simplified and cheaper than the preceding one and differs in the absence of toothed wheels coupled to the knurled roller and to the circular blade and in that the knurled roller and the axial pivot connecting tot he knob are formed monolithically in one piece and define a single roller-pivot member 23, formed, for example, by matching and/or punching.
  • Another particular characteristic of the invention resides in that the knurled roller 10' and the axial pivot for connection to the knob are formed monolithically, forming a monolithic roller-pivot part 23.
  • Roller-pivot member 23 includes a roller portion 10' that is joined to a pivot portion 12' that is provided with longitudinal grooves 24 and is keyed in an axial hole 25 of a plastic knob 11'.
  • Roller-pivot 23 can be rotatably mounted on the respective lever 2 without any intermediate member, such as for example the antifriction bushes used in the conventional can openers.
  • Circular blade 9' on lever 3 is driven in its rotation by the friction exerted by the lid of the can on the blade itself during cutting.
  • the structure of the can opener according to the invention allows a considerable constructive simplification and a reduction of the component parts. Besides reducing the assembly and production costs the can opener according to the invention is more reliable than similar conventional products.
  • a particularly advantageous method of assembly comprises the steps of: a) forming a first lever; b) mounting a blade assembly, comprising at least one circular blade rotating at a pivot, on said lever; c) forming a second lever; d) mounting a drive assembly on said lever, said drive assembly comprising a knurled roller fastened to an operating knob by means of a second pivot; a) pivoting said first and second levers at a connecting rivet.
  • the circular blade is rigidly associated with a first toothed wheel by inserting an axial appendage of the blade in a polygonal central hole of the toothed wheel and by punching and/or riveting the appendage.
  • the roller is rigidly associated with a second toothed wheel by inserting an axial appendage of the roller in a polygonal central hole of the toothed wheel and by punching and/or riveting the appendage.
  • Such assembly method can be completely automatic and performed by robotized production lines in order to considerably reduce production costs with respect to the traditional can openers.
  • the can opener according to the invention is susceptible of numerous modifications and variations, all of which are within the cope of the inventive concept defined by the accompanying claims. All the details may be replaced with other technically equivalent ones. The materials and the dimensions may vary according to the requirements.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP99125150A 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren Expired - Lifetime EP1024110B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
IT000062 IT239415Y1 (it) 1995-07-21 1995-07-21 Apriscatole migliorato con lama a disco
ITVI950062U 1995-07-21
EP19960111496 EP0754647B1 (de) 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP19960111496 Division EP0754647B1 (de) 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren

Publications (2)

Publication Number Publication Date
EP1024110A1 true EP1024110A1 (de) 2000-08-02
EP1024110B1 EP1024110B1 (de) 2003-04-02

Family

ID=11425753

Family Applications (2)

Application Number Title Priority Date Filing Date
EP99125150A Expired - Lifetime EP1024110B1 (de) 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren
EP19960111496 Expired - Lifetime EP0754647B1 (de) 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP19960111496 Expired - Lifetime EP0754647B1 (de) 1995-07-21 1996-07-17 Dosenöffner mit Schneidrad und dazugehöriges Zusammensetzungsverfahren

Country Status (2)

Country Link
EP (2) EP1024110B1 (de)
IT (1) IT239415Y1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT239415Y1 (it) * 1995-07-21 2001-02-26 Barbara Gisolo Apriscatole migliorato con lama a disco

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296357A7 (fr) * 1974-12-23 1976-07-23 Usbeck & Soehne Monopolwerk Ouvre-boite a pince
EP0104152A2 (de) * 1982-06-17 1984-03-28 AB Sven Johansson & Co. Büchsenöffner
WO1992002445A1 (en) * 1990-08-03 1992-02-20 William Levene Limited Can opener
EP0574214A1 (de) * 1992-06-09 1993-12-15 MAXPAT TRADING & MARKETING (FAR EAST) LIMITED Dosenöffner

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT239415Y1 (it) * 1995-07-21 2001-02-26 Barbara Gisolo Apriscatole migliorato con lama a disco

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2296357A7 (fr) * 1974-12-23 1976-07-23 Usbeck & Soehne Monopolwerk Ouvre-boite a pince
EP0104152A2 (de) * 1982-06-17 1984-03-28 AB Sven Johansson & Co. Büchsenöffner
WO1992002445A1 (en) * 1990-08-03 1992-02-20 William Levene Limited Can opener
EP0574214A1 (de) * 1992-06-09 1993-12-15 MAXPAT TRADING & MARKETING (FAR EAST) LIMITED Dosenöffner

Also Published As

Publication number Publication date
ITVI950062U1 (it) 1995-10-21
ITVI950062V0 (it) 1995-07-21
EP0754647B1 (de) 2000-10-18
IT239415Y1 (it) 2001-02-26
EP0754647A1 (de) 1997-01-22
EP1024110B1 (de) 2003-04-02

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