US3881247A - Electrically powered can opener - Google Patents

Electrically powered can opener Download PDF

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Publication number
US3881247A
US3881247A US372778A US37277873A US3881247A US 3881247 A US3881247 A US 3881247A US 372778 A US372778 A US 372778A US 37277873 A US37277873 A US 37277873A US 3881247 A US3881247 A US 3881247A
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US
United States
Prior art keywords
lever
end seam
outer layer
seam
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
US372778A
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English (en)
Inventor
Tatuo Niwa
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
Application filed by Aichi Electric Co Ltd filed Critical Aichi Electric Co Ltd
Application granted granted Critical
Publication of US3881247A publication Critical patent/US3881247A/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 powered can opener for severing the outer layer of an end seam of a can in which a can rim drive cog wheel is engageable with the lower side of the outer layer of the seam, a cutting wheel is positioned horizontally for severing the outer layer of the end seam, and a can rim engaging roller engages the inner layer of the end seam so as to press the outer layer toward the cutting edge of the cutting wheel during the can opening operation.
  • the can opener further includes a lever mechanism for urging the engaging roller toward the inner layer of the end seam with an additional force when the cutting wheel severs a thicker portion of the end seam.
  • the present invention relates to an electrically powered can opener, and more particularly to an improvement in a powered can opener of the type which severs the outer layer of an end seam of a can.
  • Conventional can openers of this type usually comprise such common parts as a can rim drive cog wheel engageable with the lower side of the outer seam layer. a cutting wheel positioned horizontally for severing the outer layer of the end seam, and a can rim engaging roller engageable with the inner layer of the end seam so as to press the outer layer toward the cutting edge of the cutting wheel during the can opening.
  • the present invention provides a mechanical device functioning to urge the can rim engaging roller toward the inner layer of the end seam with an additional force when the cutting wheel severs a thicker portion of the outer layer of the can end seam.
  • an electrically powered can opener which comprises a body frame, an electric motor housed within the body frame, a drive shaft horizontally journalled on the vertical front member of the frame and driven by the motor, a can rim drive cog wheel mounted on a protruding portion of theshaft extended from the front member to rotate a can by driving the lower edge of the outer layer of the end seam of the can, a cutting wheel rotatably mounted on the front member and positioned so that the cutting edge thereof may be engaged with the outer layer of the end seam, a lever mechanism mounted on the body frame to activate the motor, and a can rim engaging roller mounted rotatably on the lever mechanism in such a manner that the. engaging portion of the roller is brought inside and depresses the inner layer of the end seam toward the cutting edge of the cutting wheel upon operation of the lever mechanism.
  • the lever mechanism comprises an actuating lever pivoted for vertical movement on the inner wall of the front member of the body frame for activating the motor when depressed, an operation lever pivoted at one end on the inner wall coaxially with the actuating lever, a rotary plate journalling the engaging roller at one end thereof and at the other end thereof pivoted on a portion of the body frame, link means pivotally connecting the rotary plate to the operation lever, and a resilient means disposed between the other end of the operation lever and a portion of the actuating lever for normally biasing the actuating and operating levers toward each other, whereby the resilient means is stretched by a predetermined amount while the roller depresses the inner layer of the end seam and is further stretched when the cutting edge of the cutting wheel severs the thicker portion of the outer layer of the end seam.
  • FIG. I is a front elevational view of a powered can opener in accordance with the present invention.
  • FIG. 2 is a backside view of the can opener, revealing the lever mechanism assembled within the body frame of the opener.
  • FIG. 3 is a vertical sectional view taken with reference to line 3-3 of FIG. 2, looking in the direction of the arrows and showing a can rim engaging roller mounted on the lever mechanism.
  • FIG. 4 is a view similar to FIG. 3 but illustrating the engaging roller moved downwardly by the lever mechanism to cut the outer layer of the end seam of the can by way of the cutting edge of a cutting wheel, the cutting wheel being horizontally pivoted on the front member of the opener.
  • FIG. 5 is an enlarged view of a part of FIG. 4, showing the initial cutting operation of the can opener.
  • the can opener 1 comprises a front or operation face 2 and a body cover 3.
  • a drive mechanism is contained within the hollow body of the can opener I and includes an electric motor 4 driving a reduction gear 5 system.
  • a shaft 6 of the reduction gear 5 protrudes outwardly from the front face 2 and has a can rim drive cog wheel 7 secured to the protruding end thereof.
  • the cog wheel 7 is provided with can rim engaging teeth and rear or cutter wheel engaging teeth, the latter being meshed with the toothed portion of a cutting wheel 8.
  • the cutting wheel 8 is positioned rotatably over the cog wheel 7 at a right angle toward the cog wheel 7.
  • the front face 2 has an upper slant portion hanging over the remaining portion thereof.
  • a can cover engaging roller 9 is rotatably mounted on the upper slant portion of the front face 2 so that the engaging roller 9 is displaceable in an askew relationship to the can rim drive cog wheel 7.
  • the engaging roller 9 is journalled on a pin 12 secured on the central portion of a rotary metal plate 11 which is pivoted on a screw 10 on the backside of the slant portion of the front face 2.
  • the engaging roller 9 ascends and descends in accordance with the swing movement of the rotarymetal plate 11.
  • roller 9 When the roller 9 descends, it pressingly engages with the inner side of the end seam of the can rim so that the outer layer of the end seam is urged onto the cutting wheel 8 and the lower edge of the outer layer of the end seam is also urged onto the can rim drive cog wheel 7.
  • An L-shaped can holding member 13 is firmly secured on the free end of the rotary metal plate 11.
  • the free end of the L-shaped member 13 protrudes from an aperture 14 provided on the front face 2 and moves ascendently and descendently in relation with the swinging movement of the rotary metal plate 11.
  • the descended can holding member 13 co-operates with a can holding post 15 projected from the front face 2 so as to condition correctly the can to the cutting position therefor by holding the upper portion of the can.
  • the body wall of the can is well guided by a boss 27 integral with the front face 2.
  • a lever mechanism 16 comprises an operation lever 18 vertically rotatably journalled on a bracket 17 which is integral with the inner wall of the front face 2, a link 19 pivoted at its one end on a portion of the operation lever 18 and engaged at the other end thereof with the free or rotary end of the rotary metal plate 11, and an actuating handle lever 25 vertically journalled on the bracket 17 coaxially with the operation lever 18.
  • the actuating handle lever 25 protrudes rearwardly so that its free end extends through a vertical slit 23 cut out of the back wall 3 of the body cover.
  • the handle lever 25 is provided substantially at its center with an integral upward projection 24 which is engageable with the bottom side of the operation lever 18 and with an integral downward projection 22 to operate a switch button 21 of a switch for starting the motor 4.
  • the lever mechanism 16 also includes a coil spring 26 disposed between the actuating handle lever 25 and the free end of the operation lever 18. The spring 26 functions to bias the operation lever 18 and the handle lever 25 toward each other.
  • a further depression of the actuating handle lever 25 will stretch the spring 26 to further lower the link 19.
  • the lower edge of the outer layer of the end seam of the can is forcibly pressed onto the can rim drive cog wheel 7 and the cutting edge of the cutting wheel 8 cuts into the outer layer of the end seam of the can.
  • the upper projection 24 of the handle lever 25 leaves the operation lever 18 and the lower projection 22 pushes the switch button 21 of the switch 20 to activate the motor 4. Consequently, the returning force of the spring 26 further urges the engaging roller 9 toward the inner side of the end seam by way of the operation lever 18 and the link 19.
  • the thicker portion of the cam seam is smoothly severed in the same manner as the regular portion of the end seam of the can and the can continues to rotate so as to complete the severingaction.
  • the depressed actuating handle lever 25 Upon completion of the cutting operation, the depressed actuating handle lever 25 is released and moved upwardly by the resilient force of the spring 26.
  • the upper projection 24 engages the operation lever 18 and the lower flap 22 releases the switch button 21 to open the switch 20.
  • the can C stays on the drive cog wheel 7 because of the engaging roller 9 which still engages with the inner side of the end seam of the can.
  • the can C can be removed from the can opener l by lifting the handle lever 25 upwardly, which releases the engagement of the roller 9 with the inner side of the end seam of the can.
  • an electrically powered can opener of the type adapted to sever the outer layer of an end seam ofa can and including a body frame, an electric motor housed within said body frame, a drive shaft driven by said motor horizontally journalled on and protruding from the vertical front member of said frame, a can rim drive cog wheel mounted on the protruding portion of said shaft to rotate a can by driving the lower edge of the outer layer of the can end seam, a cutting wheel rotatably mounted on said front member and positioned so that the cutting edge thereof may be engaged with the outer layer of the end seam ofa can, a lever mechanism mounted on said frame to activate said motor, and a cam rim engaging roller mounted on said lever mechanism in such a manner that the engaging portion of said roller may be brought inside the inner layer of the end seam of a can to depress the seam toward the cutting edge of said cutting wheel upon operating said lever mechanism; the improvement wherein said lever mechanism comprises an actuating lever pivoted for vertical movement to said body frame for activating said motor when lowered, an operation lever pi
  • An electrically powered can opener according to claim 2, wherein said actuating lever includes integral upper and lower projections, said upper projection being engageable with the bottom portion of said operation lever and said lower projection engaging a switch for activating said motor.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
US372778A 1972-09-08 1973-06-22 Electrically powered can opener Expired - Lifetime US3881247A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1972104898U JPS5327256Y2 (enrdf_load_stackoverflow) 1972-09-08 1972-09-08

Publications (1)

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US3881247A true US3881247A (en) 1975-05-06

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Family Applications (1)

Application Number Title Priority Date Filing Date
US372778A Expired - Lifetime US3881247A (en) 1972-09-08 1973-06-22 Electrically powered can opener

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Country Link
US (1) US3881247A (enrdf_load_stackoverflow)
JP (1) JPS5327256Y2 (enrdf_load_stackoverflow)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604698A1 (fr) * 1986-09-12 1988-04-08 Seb Sa Ouvre-boites electrique portatif
EP0305713A1 (de) * 1987-09-02 1989-03-08 Braun Aktiengesellschaft Elektrisch angetriebener Dosenöffner
US5121546A (en) * 1990-10-29 1992-06-16 Chong Wun C 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

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1709675A (en) * 1928-04-20 1929-04-16 Valentine J Martini Wire cutter
US3487542A (en) * 1968-02-23 1970-01-06 Joseph F Hamwi Can opener with removable cutter elements
US3698084A (en) * 1971-01-18 1972-10-17 Peterson Kruse Inc Power operated can opener
US3740840A (en) * 1971-10-26 1973-06-26 Imp Knife Ass Co Inc Electric can opener with can sensing means
US3805380A (en) * 1971-09-17 1974-04-23 Aichi Electric Mfg Electrically powered can opener

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1709675A (en) * 1928-04-20 1929-04-16 Valentine J Martini Wire cutter
US3487542A (en) * 1968-02-23 1970-01-06 Joseph F Hamwi Can opener with removable cutter elements
US3698084A (en) * 1971-01-18 1972-10-17 Peterson Kruse Inc Power operated can opener
US3805380A (en) * 1971-09-17 1974-04-23 Aichi Electric Mfg Electrically powered can opener
US3740840A (en) * 1971-10-26 1973-06-26 Imp Knife Ass Co Inc Electric can opener with can sensing means

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2604698A1 (fr) * 1986-09-12 1988-04-08 Seb Sa Ouvre-boites electrique portatif
EP0305713A1 (de) * 1987-09-02 1989-03-08 Braun Aktiengesellschaft Elektrisch angetriebener Dosenöffner
US5121546A (en) * 1990-10-29 1992-06-16 Chong Wun C 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
JPS4964364U (enrdf_load_stackoverflow) 1974-06-05
JPS5327256Y2 (enrdf_load_stackoverflow) 1978-07-11

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