US3766647A - Can opener with magnetic cutting chip catcher - Google Patents

Can opener with magnetic cutting chip catcher Download PDF

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Publication number
US3766647A
US3766647A US00223889A US3766647DA US3766647A US 3766647 A US3766647 A US 3766647A US 00223889 A US00223889 A US 00223889A US 3766647D A US3766647D A US 3766647DA US 3766647 A US3766647 A US 3766647A
Authority
US
United States
Prior art keywords
magnet
cutter element
cutter
support structure
opener
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
US00223889A
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English (en)
Inventor
W Steiner
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
Application granted granted Critical
Publication of US3766647A publication Critical patent/US3766647A/en
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
    • 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
    • B67B7/32—Hand-operated cutting devices propelled by rotary gears or wheels around periphery of container

Definitions

  • the can opener support has a cutter element, such as a rotary cutter mounted thereon, adjacent a transport wheel to provide for relative movement of the cutter, and a can pinched between the cutter and the transport wheel.
  • a magnet preferably a bar magnet is located adjacent the cutter wheel but spaced therefrom by a small air gap, the bar magnet being for example 3-5 mm in diameter and having a length about three to five times the diameter, extending at about a right angle from the support to about the distance of the cutter wheel from the support, and being located so that its lower edge is about at the level of the portion of the cutter element which extends over the edge of the can being opened.
  • the present invention relates to a can opener and more particularly to a can opener which has a transport wheel which cooperated with a cutter element, typically a cutting wheel.
  • Can openers which utilize a cutting wheel and associated transport wheel to move the can with respect to the cutter wheel are known.
  • the transport wheel possibly together with a cutter wheel, can be operated manually or by other means, for example, electrically.
  • Can openers of the type having cutters which cooperate with transport wheels have the disadvantageous that, as the cover lid of a can is being opened, small cutting chips are severed which may fall into a can. It is difficult to completely remove such chips from the contents of the can due to their very small size; cutting chips remaining in the contents of the can may present a health hazard upon consumption of the contents.
  • At least one magnet is located on the can opener in such a manner that it is close to, but not touching the cutter-element, that is, is spaced therefrom by a slight air gap. By leaving a small air gap, cutting chips which arise due to the cutting operation of the can opener will be atrracted by the magnet, but the cutting element itself will be kept free of these chips.
  • the magnet is a bar magnet which is secured at one face end to the support of the can opener in which the cutting element, typically a cuttingrwheel, is journalled.
  • a bar magnet secured at its end face, utilizes but little space and nevertheless provides sufficient, attractive force for chips.
  • the bar magnet is arranged approximately perpendicularly to the support structureadjacent the cutting element, and extends up to about a distance of projection of the cutting element.
  • the lower side of the bar magnet is preferably located about the level of that portion of the cutting element which overlaps the edge of a can upon opening of a can.
  • the cutting magnet may be sheathed by a thin sleeve of non-magnetic material, through which, however, magnetic force can penetrate so that chips can be easily seen and removed.
  • the cutting magnet may be cylindrical, for example of a diameter of about '3 to 5 mm, and have a length of about three to five times its diameter.
  • FIG. 1 is a schematic front view of the can opener, in which those parts not necessary for an understanding of the invention have been omitted.
  • FIG. 2 is a fragmentary side view of the can opener 5 in the region of the cutter element, the transport wheel 15 partly surrounding the cutter wheel.
  • a transport wheel 4 is located below cutter wheel 2; this transport wheel is not shown in FIG. 2.
  • Transport wheel 4 can be moved into engagement position with a can by means of a lever 5 (partially shown) and can be rotated by a handle or electric motor as well known, and as shown in detail in the above-referred to patent.
  • a bar, magnet 7 is located at the side of and adjacent the cutting wheel 2 (see'FIG. 1). It issecured to the support structure 1 at one of its end faces, for example by .a press fit or interference fit in a previously formed hole in the support structure. As seen in FIG. 2, bar magnet 7 is approximately perpendicular to the wall of the housing, and extends at least up to the extent of projection of the cutting wheel 2.
  • the lower side of the bar magnet7 is located just over the edge line of the canto be cut, indicated at 8 in FIG. 1.
  • the bar magnet 7 is so located that it does not touch cutter wheel 2.
  • a cover 9 covers the bar magnet 7 so that cutting chips attracted by the magnet and adhered thereto can readily be seen.
  • This cover 9 may be brass or some other material from which the chips can easily be wiped off.
  • the bar magnet may be located before or after the cutter element, looked at from the point of view' of transport direction of the cutter element with respect to a can.
  • the bar magnet 7 is preferably cylindrical, has a diameter of from 3 to 5 mm, and a length of about three to five times its diameter. Such a bar magnet provides sufficient attractive forces for cutting chips and yet requires only very little space and is inexpensive both in its initial cost as well as in the cost of attaching it to the can opener as a whole.
  • the bar magnet can be used not only with the type 0 of can opener shown and described, but also with other types of can openers, provided that it is out of engaging contact with the cutter element, typically a cutter wheel, and located adjacent the cutter element in such a manner that, when the can opener is in engagement with a can, 'the bar magnet is located just over the edge of the can to reach thereover to attract cutting chips.
  • a can opener comprising a support structure (1);
  • a cutter element (2) mounted on the support structure; a transport wheel (4) secured to the support structure in the vicinity of the cutter element arranged to engage a can to provide for relativemovement between the cutter element and a can pinched between the transport wheel and the cutter element; and
  • a magnet (7) to remove cutting chips during such relative movement the magnet being fixedly secured to the support structure and located thereon adjacent the engagement region of the cutter element and a can to attract chips formed during opening of the can, said position placing the magnet in a location avoiding magnetization of the cutter element, the relative positions of the magnet and the cutter element leaving a small air gap between the cutter element and the magnet and to attract chips away from the cutter element.
  • Can opener according to claim 2 including a thin non-magnetic cover at least partly surrounding the magnet.
  • Can opener according to claim 2 wherein the magnet has a diameter of from 3 5 mm and the length of about three to five times its diameter.
  • the cutter element is a rotary cutter wheel
  • the magnet is a bar magnet secured with one end face thereof to the support structure, the bar magnet extending approximately perpendicularly from the support structure, and being located on the support structure such that its lower edge is about at the level of the portion of the cutter wheel which extends over the can to be opened.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
US00223889A 1971-02-10 1972-02-07 Can opener with magnetic cutting chip catcher Expired - Lifetime US3766647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH196071A CH527121A (de) 1971-02-10 1971-02-10 Büchsenöffner

Publications (1)

Publication Number Publication Date
US3766647A true US3766647A (en) 1973-10-23

Family

ID=4222622

Family Applications (1)

Application Number Title Priority Date Filing Date
US00223889A Expired - Lifetime US3766647A (en) 1971-02-10 1972-02-07 Can opener with magnetic cutting chip catcher

Country Status (9)

Country Link
US (1) US3766647A (de)
AU (1) AU3881672A (de)
CH (1) CH527121A (de)
DE (1) DE2205994A1 (de)
ES (1) ES177375Y (de)
FR (1) FR2186925A5 (de)
GB (1) GB1325973A (de)
IT (1) IT947420B (de)
NL (1) NL7201659A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974999A (en) * 1974-09-03 1976-08-17 Bertolet Carol F Combined staple removing and retrieving device
US5957430A (en) * 1996-10-28 1999-09-28 Olson; Rory Magnetized staple remover
US20020166237A1 (en) * 2001-05-08 2002-11-14 Kiyoshi Kimura Rod cutting device
US12226924B2 (en) 2021-08-03 2025-02-18 Gracewood Management, Inc. Rotary cutter

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115893285B (zh) * 2022-11-22 2025-08-12 安徽龙芯微科技有限公司 一种封装芯片开盖装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617184A (en) * 1951-02-12 1952-11-11 Farandatos Denis Magnetic can opener
GB750411A (en) * 1953-03-16 1956-06-13 Joseph Watt Tin opener

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2617184A (en) * 1951-02-12 1952-11-11 Farandatos Denis Magnetic can opener
GB750411A (en) * 1953-03-16 1956-06-13 Joseph Watt Tin opener

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3974999A (en) * 1974-09-03 1976-08-17 Bertolet Carol F Combined staple removing and retrieving device
US5957430A (en) * 1996-10-28 1999-09-28 Olson; Rory Magnetized staple remover
US20020166237A1 (en) * 2001-05-08 2002-11-14 Kiyoshi Kimura Rod cutting device
US7020967B2 (en) * 2001-05-08 2006-04-04 Kabushiki Kaisha Ogura Rod cutting device
US12226924B2 (en) 2021-08-03 2025-02-18 Gracewood Management, Inc. Rotary cutter

Also Published As

Publication number Publication date
NL7201659A (de) 1972-08-14
CH527121A (de) 1972-08-31
ES177375Y (es) 1973-03-01
IT947420B (it) 1973-05-21
FR2186925A5 (de) 1974-01-11
AU3881672A (en) 1973-08-16
ES177375U (es) 1972-09-16
GB1325973A (en) 1973-08-08
DE2205994A1 (de) 1972-08-17

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