US3805380A - Electrically powered can opener - Google Patents

Electrically powered can opener Download PDF

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Publication number
US3805380A
US3805380A US00275693A US27569372A US3805380A US 3805380 A US3805380 A US 3805380A US 00275693 A US00275693 A US 00275693A US 27569372 A US27569372 A US 27569372A US 3805380 A US3805380 A US 3805380A
Authority
US
United States
Prior art keywords
cutter
feed wheel
frame
lever
holding roller
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
US00275693A
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English (en)
Inventor
O Yamamoto
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.)
Aichi Electric Co Ltd
Aichi Denki Seisakusho KK
Original Assignee
Aichi Electric Co Ltd
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 claimed from JP7269671A external-priority patent/JPS4840580A/ja
Priority claimed from JP1874372A external-priority patent/JPS4887977A/ja
Application filed by Aichi Electric Co Ltd filed Critical Aichi Electric Co Ltd
Application granted granted Critical
Publication of US3805380A publication Critical patent/US3805380A/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
    • B67B7/38—Power-operated cutting devices

Definitions

  • a conventional can opener of this type has a can feed wheel extending rotatably through a frame and a lever carring a cutter and pivoted on the frame.
  • a can lid of a can being driven by the feed wheel, is severed by the cutter closely inside of the end seam of the can lid, such a sanitarily undesirable situation is brought about that metal waste produced in a can opening operation drops into the can.
  • the conventional can opener has a fault in that the can lid drops into the can after being cutoff. In order to eliminate this fault, an arm provided with a magnet at its free end is extended from the frame to attract the can lid cut off.
  • a can opener is devised in which the positions of the feed wheel and the cutter are interchanged with the can feed wheel being in contact with the inner layer of the end seam to rotate the can and only the outer layer of the end seam is severed by the cutter.
  • this kind of can opener has a fault in that the can lid cut off is distorted or injured at its periphery and is undesirable for reuse as a proper detachable lid.
  • a can opener according to the present invention eliminates the above mentioned faults of an electrically powered can opener.
  • a can opener according to the present invention comprises a frame, a can feed wheel extending rotatably through the front member of the frame, a circular cutter mounted rotatably on the frame over the feed wheel and a lever having a holding roller and pivoted. to the frame.
  • An end seam of a can is put on the feed wheel and is depressed on its inner layer by the holding roller as the result of the operation of the lever.
  • the end seam is held by the feed wheel and the holding roller, while the outer layer of the end seam is pierced by the circular cutter on account of the depressing force of the roller.
  • the can When the feed wheel is actuated, the can is rotated and only the outer layer is severed by the circular cutter. As the curved portion of the end seam still engages with the top of the side wall of the can even when the can is cutout, the can lid cut off does not fall into the can. The metal wastes then produced, of course, drop outside of the can. Because the end seam is supported fast at its inner layer by the holding roller, the end seam is not distorted during a can opening operation and it becomes possible to reuse the cut off can lid as a proper detachable can lid.
  • the holding roller When the lever is operated, the holding roller can move either parallel with or obliquely to the vertical front member of the frame. In the latter case, the holding of the can lid by means of the holding roller is more secure.
  • Such a temporary retreat of the feed wheel in its axial direction as take place when a can is set to a can opener makes it easy to introducethe holding roller inside the end seam and suitable for holding of the can.
  • the cutter may be in mesh with the feed wheel to be driven positively but be rotated independently.
  • an electrically powered can opener according to the pres ent invention affords a proper and neat can opening operation and is desireable in the light of the possible reuse of the cut off can lid and for reasons of sanitation.
  • FIG. 1 is a front elevational view of a can opener
  • FIG. 2 is a rear elevational view of the can opener of FIG. 1 with a rear member of a frame being taken away to show a mechanism therein contained;
  • FIG. 3 is an enlarged side elevational view in partial section of the can opener of FIG. 1;
  • FIGS. 4 and 5 are further enlarged sectional views of can cutting main members for explaining the operation of the can opener of FIG. 1;
  • FIG. 6 is a front elevational view of another can opener as another embodiment of the present inventron
  • FIG. 7 is a side elevational view in the can opener of FIG. 6;
  • FIG. 8 is an enlarged side elevational view in partial section of the cutting portion of the can opener of FIG. 6 when'mounting a can thereon;
  • FIG. 9 is a cross-sectional view of the cutting portion of the can opener of FIG. 6 as in use;
  • FIG. 10 is a front elevational view showing a cutter and a feed wheel of the can opener of FIG. 6;
  • FIG. 11 is a sectional view showing a modification of the members shown in FIGS. 8 and 9.
  • a frame 10 has a front member 11 which comprises a layer 12 for artistic design and another layer 12 for reinforcement.
  • the layer shown by numeral 12 is made of materials such as plastics, whereas the layer shown by numeral 12 is made of materials of high strength such as metals.
  • a driving electric motor 13 and a transmitting mecha nism 14 are provided in the frame 10, the latter being composed of plural reduction gears.
  • Numeral l5 represents a bearing member of the shaft of the reduction gears.
  • a bearing member 16 supports a driving shaft 17 for rotation and axial movement and is made integrally with the layer 12' as well as the bearingmember 15.
  • a feed wheel 19 to rotate a can is connected to a joint portion 18 formed on the end portion of the driving shaft 17 so that the feed wheel 19 may rotate with the driving shaft 17.
  • a bevel gear 19a is formed integrally with the feed wheel l9and is positioned therebehind and is used as a means to transmit a torque to a cutter 20 described hereafter from the feed wheel 19.
  • a wavy spring washer 19b interposed between the bevel gear 19a and the bearing member 16 is usually biasing the feed wheel 19 to the lefthand side of FIG. 3 and is compressed in its axial direction to facilitate the retreat of the feed wheel 19 towards the right hand side of FIG.
  • a circular cutter 20 partial section of is mounted rotatably on a supporting shaft 21 held by a supporting arm 22 extending from the layer 12'.
  • a bevel gear 20a is formed integrally with the cutter 20 and is positioned thereunder and is adapted to be in mesh with the gear 19a.
  • a lever 24 is pivoted at its one end on the inner wall of the frame by means of a pin 25.
  • the upper portion of the front member 11 is inclined forwardly and through this portion is bored an opening 11a.
  • a shaft 28 is secured on the lever 24 through this opening and a holding roller 27 is mounted rotatably on the shaft 28.
  • heads 29 and 30 On the both ends of the shaft 28 are formed heads 29 and 30 and a spacing ring 31 and a washer 32 are inserted between the head 30 and the holding roller 27.
  • the other end of the lever 24 is connected to a button 44 by a connecting rod 40, an operating lever 41, a pivot pin 42 and a pivot pin 43.
  • Numeral 46 represents a stop to limit the lowest position of the lever 24.
  • a projecting pin 33 for preventing the swing of a can and a projecting resilient plate 33 are provided on the front member 11.
  • a switch 34 for the power supply circuit of the driving electric motor 13 is provided and a following piece 34' of the switch 34 is adapted to be actuated as the result of the displacement of an operating piece 41a of the operating lever 41 thereby establishing the contact or the break between electrical contacts 34a and 34b.
  • a can receiver 33" is provided on the front member 11.
  • Numeral 35 represents a can and numeral 35' represents the top of the side wall of the can.
  • Numeral 36 represents a can lid.
  • the can opener is set to the situation where the free end of the lever 24 is raised that is to the situation where the holding roller 27 is disposed at the position 27a shown by dotted lines in FIG. 3 or the holding roller 27 is a little more away from the feed wheel 19.
  • the side wall of the can 35 is brought to be in contact with the can receiver 33" and the lower edge 39 of the outer layer 38 of an end seam 36' is placed on the feed wheel 19 as shown in FIG. 4.
  • the lever 24 is lowered and the lower portion of the holding roller 27 is forced in inside the inner layer 37 of the end seam 36'. See FIG. 5.
  • the outer layer 38 of the end seam 36 is pushed by the lower depressing surface 27 of the holding roller 27 towards the cutter and the edge of the cutter 20 pierces into the outer layer 38.
  • the operating lever 41 is lowered to the position shown by solid lines in FIG. 3 and the operating piece 41a of the lever 41 pushes in the following piece 34'.
  • the electric motor 13 starts to rotate and the feed wheel 19 is actuated through the transmitting mechanism 14 and the driving shaft 17.
  • the cutter 20 is driven from the feed wheel 19 through the gears 19a and 20a.
  • the cutter 20 severs only the outer layer 38 of the end seam 36 progressively.
  • the can lid 36 is cut at the outer layer of the end seam and becomes separable from the top 35' of the can side wall.
  • the operating piece 410 moves in the returning direction due to the pushing up force of the following piece 34 or a force of any other spring and the electric motor 13 is deenergized thereby ceasing the rotation of the feed wheel 19.
  • the lower depressing surface 27' of the holding roller 27 is still disposed inside the top 35 of the side wall and the can 35 is held by the feed wheel 19 and the holding roller 27 in the situation where the can is just cut out. Then, the can 35 becomes removable from the can opener by raising the button 44 to the position 44 shown by dotted lines.
  • the cut off can lid is not subject to the distortion in the can opening operation because of the support by the holding roller 27 inside the end seam 36' and can be engageable with the top 35 of the can 35 at the uncut curved portion 37'.
  • the cut off lid can be utilized as a detachable can lid.
  • the can lid 36 as well as the curved portion 37' is not injured and very neat.
  • the actuation of the cutter 20 in mesh with the feed wheel 19 makes the cutting power of the cutter 20 very sharp and so the severed end surface is very smooth.
  • a frame 47 has a front member 48 which comprises a layer 49 for artistic design and another layer 49 for reinforcement.
  • the layer shown by numeral 49 is made of materials such as plastics, whereas the layer shown by numeral 49' is made of materials of high strength such as metals.
  • a driving electric motor 50 and a transmitting mechanism 51 are provided in the frame 47, the latter being composed of plural reduction gears.
  • Numeral 52 represents a supporting shaft of the reduction gears.
  • a bearing member 53 supports a driving shaft 54 for rotation and axial movement and is made integral with the layer 49'.
  • a feed wheel 55 is connected to a joint portion 56 formed on the end portion of the driving shaft 54 so that it may rotate with the driving shaft 54.
  • a circular cutter 57 is mounted rotatably on a supporting shaft 59 secured in a supporting arm 58 extending from the layer 49.
  • a lever 61 is pivoted on the front member 48 by means of a detachable fulcrum pin and numeral 62 represents its grip.
  • a holding roller 63 is mounted on a shaft 64 fixed in an opening 61" bored through a roller sustaining portion 61 of the lever 61. On the both ends of the shaft 64 are formed heads 65 and 66.
  • a spacing ring 67 and a washer 68 are disposed between the heads and the holding roller 63.
  • a can holding projection 69 is attached to the lever 61 to the righthand side of the holding roller 63 in FIG.
  • Numeral 70 represents a movable member for operating a switch' 70' for the driving electric motor 50 and is extending through the top of the frame 47. This movable member is usually biased upwards but is adapted to be depressed by lowering the grip 62 of the lever 61. Thereby closing the switch 70' to energize the electric motor 50.
  • Numeral 71 represents a can, 72 a can lid and 73 the end seam of the can lid 72 for sealing the can 71 hermetically.
  • the can opener is set to the situation where the lever 61 is raised that is to the situation where the holding roller 63 is disposed at the position shown in FIG. 8 or the holding roller 63 is a little more away from the feed wheel 55.
  • the side wall of the can is brought to be in contact with the can receiver 69' and the lower edge of the outer layer 74 of the end seam 73 is placed on the feed wheel 55 as shown.
  • the lever 61 is lowered and the lower portion of the holding roller 63 is forced in inside the inner layer 76 of the end seam 73. See FIG. 9.
  • the outer layer 74 of the end seam 73 is pushed by the lower depressing surface 63' of the holding roller 63 towards the cutter 57 and the edge of the cutter 57 pierces into the outer layer 74.
  • the grip 62 of the lever 61 is depressing the movable member 70 of the switch 70'.
  • the electric motor 50 rotates and the feed wheel 55 is actuated through the transmitting mechanism 51 and the driving shaft 54, rotating the can.
  • the cutter 57 severs the outer layer 74 of the end seam and the can lid becomes separable from the can.
  • the switch 70 is opened due to the pushing up force of the movable member 70 by releasing the grip 62 and the electric motor 50 is deenergized thereby stop the rotation of the feed wheel 55.
  • the lower depressing surface 63 of the holding roller 63 is still disposed inside the top 71 of the side wall and the can 71 is held by the feed wheel 55 and the holding roller 63 in the situation where the can is just cut out. Then the can 71 becomes removable from the can opener by raising the grip 62.
  • FIG. 11 shows an embodiment where a wavy washer 76 is interposed between a feed wheel 55a and an end portion ofa bearing member 5314.
  • the front end portion, that is the lefthand side portion in FIG. 11, of the feed wheel 55a is adapted to extend sufficiently beyond the front portion of a cutter 5711.
  • An electrically powered can opener comprising a frame, a driving electric motor mounted in said frame, a can feed wheel extending rotatably through the front member of said frame and actuated from said electric motor, said feed wheel being provided with a cutter driving gear, a circular cutter mounted rotatably in said frame, said cutter being provided with a gear in mesh with said cutter driving gear and being positioned where the edge of said cutter can be in contact with an outer layer of an end seam of a can lid when the lower edge of said end seam is placed on said feed wheel, a lever means mounted operably to said fame, a holding roller connected rotatably to said lever means in such a manner that the lower portion of said holding roller can be brought inside and depress the inner layer of said end seam with the lower edge thereof placed on said feed wheel by operating said lever, only said outer layer being severed by said cutter.
  • An electrically powered can opener comprising a frame, a driving electric motor mounted in said frame, a driving shaft extending rotatably through the front member of said frame and actuated from said electric motor, said driving shaft being adapted for axial move ment, a can feed wheel secured on the end portion of said driving shaft extending through said front member, said feed wheel being provided with a cutter driving gear, a circular cutter mounted rotatably in said frame, said cutter being provided with a gear in mesh with said cutter driving gear and being positioned where the edge of said cutter can be in contact with an outer layer of an end seam of a can lid when the lower edge of said end seam is placed on said feed wheel, a spring means disposed between said feed wheel and said front member for biasing said feed wheel forwardly of said front member, a stopper means provided in said frame for limiting the axial movement of said driving shaft, a lever means mounted operably to said frame, a holding roller connected rotatably to said lever means in such a manner that the lower portion of said holding roller can be brought inside and
  • An electrically powered can opener as described in claim 1 wherein said front member is provided with a forwardly inclining upper portion and said holding roller is guided by said upper portion to move obliquely with respect to said front member.
  • An electrically powered can opener comprising a frame, a driving electric motor mounted in said frame, a can feed wheel extending rotatably through the front member of said frame and actuated from said electric motor, a circular cutter mounted rotatably in said frame with its axis normal to the axis of said feed wheel, said cutter being positioned where the edge of said cutter can be in contact with an layer of an end seam of a lid when the lower edge of said seam is placed on said feed wheel, a lever pivoted on said frame, a holding roller mounted rotatably on said lever in such a manner that the lower portion of said holding roller can be brought inside and depress the inner layer of said end seam with the lower edge thereof placed on said feed wheel by operating said lever, only said outer layer being severed by said cutter.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
US00275693A 1971-09-17 1972-07-27 Electrically powered can opener Expired - Lifetime US3805380A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7269671A JPS4840580A (enrdf_load_stackoverflow) 1971-09-17 1971-09-17
JP1874372A JPS4887977A (enrdf_load_stackoverflow) 1972-02-22 1972-02-22

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US3805380A true US3805380A (en) 1974-04-23

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Application Number Title Priority Date Filing Date
US00275693A Expired - Lifetime US3805380A (en) 1971-09-17 1972-07-27 Electrically powered can opener

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US (1) US3805380A (enrdf_load_stackoverflow)
DE (1) DE2244319A1 (enrdf_load_stackoverflow)
NL (1) NL7212341A (enrdf_load_stackoverflow)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881247A (en) * 1972-09-08 1975-05-06 Aichi Electric Mfg Electrically powered can opener
US5313708A (en) * 1992-12-04 1994-05-24 The Rival Company Can opener
USD366404S (en) 1994-04-05 1996-01-23 The Rival Company Can opener
USD394590S (en) 1995-11-01 1998-05-26 The Rival Company Can opener
USD410827S (en) 1998-01-09 1999-06-08 The Rival Company Can opener
USD411789S (en) * 1998-01-09 1999-07-06 The Rival Company Can opener
USD412651S (en) 1998-01-09 1999-08-10 The Rival Company Can opener
US5992026A (en) * 1998-01-09 1999-11-30 The Rival Company Kitchen appliance with pivotal mounting
US6189221B1 (en) 1998-12-31 2001-02-20 The Rival Company Can opener appliance having a side-cutting mechanism
US6510613B1 (en) 2000-07-20 2003-01-28 The Holmes Group, Inc. Ergonomic can opener

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD255210S (en) 1977-03-02 1980-06-03 Landmann Ltd. Can opener

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1491477A (en) * 1922-01-09 1924-04-22 Worcester Pressed Aluminum Com Can opener
GB820977A (en) * 1956-01-19 1959-09-30 Fritz Schurmann Improvements in and relating to wheels for agricultural vehicles
US3161952A (en) * 1963-10-07 1964-12-22 Joseph S Czapiewski Metal barrel or drum top cutter
US3439417A (en) * 1967-03-17 1969-04-22 Gen Electric Can opener

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1491477A (en) * 1922-01-09 1924-04-22 Worcester Pressed Aluminum Com Can opener
GB820977A (en) * 1956-01-19 1959-09-30 Fritz Schurmann Improvements in and relating to wheels for agricultural vehicles
US3161952A (en) * 1963-10-07 1964-12-22 Joseph S Czapiewski Metal barrel or drum top cutter
US3439417A (en) * 1967-03-17 1969-04-22 Gen Electric Can opener

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3881247A (en) * 1972-09-08 1975-05-06 Aichi Electric Mfg Electrically powered can opener
US5313708A (en) * 1992-12-04 1994-05-24 The Rival Company Can opener
USD366404S (en) 1994-04-05 1996-01-23 The Rival Company Can opener
USD394590S (en) 1995-11-01 1998-05-26 The Rival Company Can opener
USD410827S (en) 1998-01-09 1999-06-08 The Rival Company Can opener
USD411789S (en) * 1998-01-09 1999-07-06 The Rival Company Can opener
USD412651S (en) 1998-01-09 1999-08-10 The Rival Company Can opener
US5992026A (en) * 1998-01-09 1999-11-30 The Rival Company Kitchen appliance with pivotal mounting
US6189221B1 (en) 1998-12-31 2001-02-20 The Rival Company Can opener appliance having a side-cutting mechanism
US6510613B1 (en) 2000-07-20 2003-01-28 The Holmes Group, Inc. Ergonomic can opener

Also Published As

Publication number Publication date
DE2244319A1 (de) 1973-03-29
NL7212341A (enrdf_load_stackoverflow) 1973-03-20

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