US3815226A - Automatic can opener with can disengagement through motor reversal - Google Patents

Automatic can opener with can disengagement through motor reversal Download PDF

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Publication number
US3815226A
US3815226A US00225935A US22593572A US3815226A US 3815226 A US3815226 A US 3815226A US 00225935 A US00225935 A US 00225935A US 22593572 A US22593572 A US 22593572A US 3815226 A US3815226 A US 3815226A
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US
United States
Prior art keywords
knurl
arm
cam
opening
motor
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
US00225935A
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English (en)
Inventor
P Marrie
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ETUD SOC
SOC ETUD FR
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ETUD SOC
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Publication date
Application filed by ETUD SOC filed Critical ETUD SOC
Priority to FR7305020A priority Critical patent/FR2174014A1/fr
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Publication of US3815226A publication Critical patent/US3815226A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/78—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices with rotating digging elements
    • E02F3/783—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices with rotating digging elements having a horizontal axis of rotation
    • 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

  • ABSTRACT Device for automatic opening of cans which includes a swinging arm upon which a rotating knurl is mounted for engaging the can against a cutter blade.
  • the arm pivots around a stationary axle on the casing and carries the shaft at the end of which is fixed the knurl, the movement of this arm being controlled by a motor, a gear-work with reversing mechanism movable by a switch and a cam pivoting on a stop, so that the shaft of the knurl makes a round trip along a rise formed by an inclined and elongated opening on the removable cutting head.
  • the lid of the can is thus automatically perforated and cut, and the can then turns in response to the mechanism actuation of reversing to free it when the knurl has returned to its rest position.
  • the axle of the vertical rotor of the motor arranged at the bottom of the device, is extended upwards by a transmission-rod on the head of which is mounted a two-contact reversing switch the rotation axle of which is placed so that manual action on one of the contacts exerts no force on the said transmission rod, while action on the second contact pushes towards the bottom of the rod and the axle of the motor lightly against a return spring and causes the reversing of the rotation direction of the gear-work.
  • the axle part external to the motor rotates a coupling with two horizontal coil shaped end flanges, one or the other of these flanges driving by friction a roller with a horizontal axle communicating the motion to the gear-work, the reversing of the rotation direction being produced by transferring from the friction on the lower flange to the friction on the upper flange.
  • the removable cutting head is made up of a support plate pierced by an inclined and elongated opening forming the elevation rise of the knurl, the said plate being tightened against the front face of the casing by ratchet motion during a frontal thrust, and lateral locking, due to two lateral locks pushed by springs, the upper edge of the plate having two stops for positioning the rim of a can during opening, and the cutting mechanism being fixed on the plate between the two stops, as well as against the driving knurl.
  • FIG. 1 is an upright front view of the device
  • FIG. 2 is an upright rear view of the device with section following plane II-II of FIG. 3, the rear closing plate of the hood of the device supposedly removed;
  • FIG. 3 is a sectional view following planes III-III of FIG. 2;
  • FIG. 4 j a sectional view following plane IV--IV of FIG. 2;
  • FIG. 5 is a view from above of the same device, with the magnet-carrying slide supposedly open in the position shown in FIG. 3;
  • FIG. 6 is a sectional view following plane VI-VI of FIG. 1; 1
  • FIG. 7 is a sectional view following plane VII-VII of FIG. 5;
  • FIG. 8 is an assembling and structural variation of the removable cutting head
  • FIG. 9 shows the removable cutting head of FIG. 8 during removal after unlocking
  • FIG. 10 is a section following plane X-X of FIG. 8 showing the locking of the plate
  • FIG. 11 is a section following plane XI-XI of FIG. 9 showing the unlocking of the plate
  • FIG. 12 is a variation for locking. the removable cutting head of FIG. 1;
  • FIG. 13 is a view of the arrangement of FIG. 12 during unlocking
  • FIG. 14 is a variation of structure of the removable cutting head.
  • FIG. 15 is a variation in structure and mounting of the removable cutting head taken in the same plane as in FIG. 3.
  • a swinging arm 1 pivoting at point 2 on an axle 3 integral with a frame 4 receives driving energy at point 2, through the intervention of a gear-work 5-6.
  • the arm 1 is driven in a determined rotation direction by energy proceeding from a motor 7 and transmitted by a wheel 8 and a friction roller 9' placed perpendicularly on the wheel 8 to pinion 5 (FIG. 4).
  • Pinion 5 transmits a movement to a reductive wheel l0'centered at point 11 on arm 1 and thus to a hollow shaft 12 which has on its front surface a cam contour 13 which, in rotation, hits on a pin 14 causes an angular displacement of arm 1 of a value determined by the cam contour.
  • the hollow shaft 12 has a hexagonal interior contour 16 which projects past the exterior part of the frame 4 so as to become level with the exterior zone of the casing 15, describing in the casing a movement centered at point 2 and limited to the angular displacement of the arm 1. Into this hexagonal lodging lodges the hexagonal axle integral with the cutting and driving assembly described later.
  • the cutting head 17 (FIGS.
  • This wheel clearance is characterized by three positions indicated as 0, 0 on FIG. 2.
  • 0 is the position of the knurl at rest allowing the passage of the rim of the can under the cutting mechanism, thus in a stopped position of the device.
  • 0' is the position of the knurl after maximum angular movement obtained by the effect of the cam 13 on the pin 14.
  • 0 is the position resulting from the residual angular course of the swinging arm 1 after freeing the cam 13 from the pin 14 and until complete pinching of the knurl against the rim of the can.
  • a cutting blade or knife 23 or other cutting mechanism (FIGS. 1 and 3) is assembled with the plate 18 in such a way that its positioning corresponds to that of the knurl in the can opening position.
  • Stops 24 and 25 grip the upper part of the rim of the can to be opened, when the blade is placed on the inside of the said rim and when the knurl engages the lower and outer part of the rim.
  • the head assembly 17 comes into a predetermined position on the front outer face of the casing 15. It is maintained in this position by two locks 26 and 27 pushed by springs 28 on the casing (FIG. 1 and 6) and which allow a locking of the element 17.
  • the hollow hexagonal axle-cam assembly 12-13 (FIG. 3) can have its rotation direction changed because of the friction driving device 8-9 (FIG. 4); which is activated by an axial displacement of the motor rotor axle 30, of a predetermined value against the bias of a spring 29, to engage of the friction wheel 9 alternatively with flange 46 or flange 47 of the wheel 8, thus reversing the rotation direction of the wheel 9.
  • the axial displacement of the flange assembly 46 and 47, mounted on the rotor is driven by tilting reverse switch 32 and a transmission rod 37.
  • the spring 29 placed under the rotor 30 maintains permanently a pressure of the wheel 8 on the wheel 9 assuring a preferential rotation direction corresponding to the rotation direction of the knurl in the cutting position.
  • the motor 7 has special bearings 41 and 42 of self-lubricating plastic; the lower bearing 42, in particular, is such that receives in a one-eyed bore, centered on the rotor, the said spring 29 supporting a ball 43.
  • the flexion of the spring 29 allows, such as shown, an axial shift having a distance CC which is necessary to the reverse friction driving.
  • the axial displacement of the rotor of the motor is such that in the rotor position in which the flange 46 is in friction with the wheel 9, that is, in the rotation direction corresponding to the cut of a lid, the
  • the swinging support arm 1 can be equipped, for the ease of blocking of the gear works, with an intermediate wheel pivoting on an axle integral with the swinging arm. It is only a question here of a kinematic variation without bearing on the general principle of the device.
  • a bell-shaped cogged crown 10 so as to take up the wiring unit and to create a free area inside the supply cable area, as appear in FIG. 3.
  • this position may be defined by the extremity of the ramp of the cam and farthest from the center that can rest on the lug 14.
  • the knife 23 is engaged in the top of the can since the knurl 22 is geared under the setting flange of the can and comes closer to the knife.
  • the knurl 22 can engage the knife 23 still more in the top of the can, and this until the top of the flange touches abutments 24 and 25.
  • the oscillating arm 1 is displaced to 0".
  • This travel 0 0" is essential for: (l) suppressing the effect of the lug 14 on the cam 13, so that the cam can turn freely, (2) letting the height of the knurl 22 adjust itself in relation to the thickness of the flange, and assure its wedging under the flange, and (3) permitting the maintenance of contact 31 of the electric circuit.
  • the closing of contacts 31 occurs during the time when the knurl 22 remains wedged under the flange of the can, in reaction to the friction caused by the cutting of the knife in the top of the can and the friction of the flange against the abutments 24 and 25.
  • the arm 1 cannot retract of itself after the end of the cutting operation, since on the one hand the can rubbing against the lugs continues, and on the other hand, the knurl 22 becomes motionless.
  • the motor 7 is then started again by pressing this time on the contact piece 36 to produce course reversal of the gear-works. Pressure is maintained on the contact piece as long as the can turns in a reverse direction from the cutting direction; the knurl returns in this way to its rest position at the bottom of the opening 51, while the cam 13, which also is turning in a reverse direction, comes at a given moment to a stop and rests against pin 14. The motor shuts off then and pressure is removed from contact piece 36.
  • the opened can is released while the knurl falls back into its rest position, whereas its lid remains held by the magnet; thus it can be recovered and thrown away.
  • the reversal of the rotation direction may be obtained by using motors of various types for direction reversal, the parts, cam, wheels, rollers, etc. for engaging kinematics may be modified in any way whatsoever and which is easily imaginable for a specialist.
  • the lower extreme point of the blade is on a vertical passing at approximately 4 mm to the left of the axle of the knurl in cutting position, of which the rotation direction is, generally for this cutting counter-clockwise; this same point is then practically on a horizontal level with the axle of the said knurl, the angle of the cutting edge being almost 30 with regard to the horizontal; the setting of the cutting edge is located between the said blade and the rim of the can B at an angle equal approximately to 45; this interior setting permits the cutting without rough edge or undulation of the can lid.
  • a triangle located at the top and at the right of the cutting edge. This right angle" triangle has its horizontal side connected to the sharpened edge and its vertical side is part of the base of the blade; this part of the blade is advantageously cut in profile.
  • each of the two spring bolts 26 and 27 is pulled laterally, the axle 19 is pushed back by spring 40 frees the head completely, and the latter is automatically released (see especially FIGS. 1 and 3).
  • the ratchet bolt is made up of a pusher 52 inserted in an opening 53 of the plate 18 and normally pushed back by the spring 54 level with the outer face of this plate (FIG.
  • the shaft 55 of the pusher penetrates into a corresponding opening in the casing.
  • the lengthened and slanting opening 51 is extended on the left by a hollow 56 aligned horizontally and and at the bottom of which the knurl comes to lie.
  • the bolt of the removable cutting head is made up of a sliding plate 58 subject to the return pressure of a spring 59 and of which the level 60 is terminated by a clip 61 which catches on the right lateral edge of the casing.
  • the sliding plate contains an opening 62 corresponding to the lengthened and slanting opening 51 of the plate 18 and ending on the left with a small, round opening 63. The latter permits while at rest the bolting of the knurl axle at the position in FIG. 13.
  • the arm 38 (FIG. 5), from which is suspended support 39 of the magnet, is a slide coming out of the casing and of which the opening is adjusted depending on the sizes or the shape of the can to be opened; as for the support 39 it has free play while oscillating within the depth of a slot 64 (FIG. 7).
  • the position of the magnet may easily be adjusted to the diameter and lid height of the can.
  • the slide After opening the latter, the slide is driven back while closing inside the casing and on the front the magnet support, so that the closed casing unit does not show any projections; ti will be observed that the slide closes a free space in which the electric cord with its plug for supplying the motor can be placed.
  • stops 24 and 25 of the same device can be replaced (FIG. 14) by an elastic blade catch 44 and a stop pin 45: in this way, height differences in can rims can be compensated for.
  • the latter is a disk which can be fixed in its working position, on an axle 65 held by a flange 66 of the plate, by screw 67 washer tightened against a clamping spring 68.
  • the hexagonal faced axle l9, bearing at one end the knurl 22, is provided at the other end with a split clamp closing expansible cone 69, which allows ratching it on shoulder 70 at the bottom of the hol low shaft with hexagonal profile 16.
  • a pusher 71 turning and integral with the hollow axle 12 to cam 13 is provided for; this pusher shows a female cone 72 designed to contract under pressure the expansible cone until the ratcher mechanism is freed and its withdrawal allowed, when separation and dismounting of this assembly is desired.
  • the following materials can be used for the construction of the swinging arm support, friction flanges and wheels, gear mechanisms, axles, cam, magnet arm support, insulating support of the electric controller, casing, etc. according to the invention: thermotemperatures resins, thermoplastics and shaped metals, injected under pressure, partially fused powder etc. permitting the making of very elaborate pieces at reduced cost.
  • the wheel 9 may contain (FIG. 4) a groove in which is inserted a ring of semiflexible material and with nonskidding characteristics, a ring which may be easily replaced when worn.
  • an electrically operated automatic can opener of the kind having an electric drive motor, a cutting knife, an arm pivoted for movement about a fixed axis, a rotatable knurl carried by the arm and driven by the motor through a drive connection, abutment means for engaging the flange of a can so that the flange can be wedged against the knurl, a rotatable cam for swinging the arm to move the knurl toward the cutting knife of effect perforation of the top of a can by the knife followed by cutting of the top of the can upon rotation of the can by the knurl, the improvement comprising means cooperating with the drive connection between the knurl and the motor for reversing the direction of rotation of the knurl after the top of the can has been cut out so that reverse operation of the knurl against the flange of the can causes the arm to swing in a reverse direction.
  • Apparatus as in claim 1 wherein the means for reversing the direction of rotation of the knurl includes a friction drive coupling having a member driven by a shaft from the motor and arranged to engage another member in either of two positions corresponding to forward and reverse drive directions, said shaft and driven member being displaceable to effect said two positions, said means further including a manually operated lever for displacingsaid shaft and driven member to the reverse position and biasing means normally displacing said shaft and driven member to the forward position.
  • a can opener as in claim 1 which includes a support plate having an elongated inclined opening therein, and wherein a portion of said knurl resides in said opening and is guided thereby.
  • a can opener as in claim 4 wherein said cutting knife is fixed to said support plate and wherein said support plate carries two stops for engaging and posiof which is shaped to correspond to the opening in said support plate.
  • a can opener as in claim 1 including a hollow shaft which carries said cam at one end, said knurl being carried on one end of an axle fitted into a complementary opening in the cam and extending into said hollow shaft, the axis of the cam being coextensive with the axis of the axle and of the complementary opening, and means at the other end of said axle for releasably retaining said axle within said hollow shaft.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Devices For Opening Bottles Or Cans (AREA)
US00225935A 1971-04-07 1972-02-14 Automatic can opener with can disengagement through motor reversal Expired - Lifetime US3815226A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7305020A FR2174014A1 (enrdf_load_stackoverflow) 1972-02-14 1973-02-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7112243A FR2133065A5 (enrdf_load_stackoverflow) 1971-04-07 1971-04-07

Publications (1)

Publication Number Publication Date
US3815226A true US3815226A (en) 1974-06-11

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ID=9074890

Family Applications (1)

Application Number Title Priority Date Filing Date
US00225935A Expired - Lifetime US3815226A (en) 1971-04-07 1972-02-14 Automatic can opener with can disengagement through motor reversal

Country Status (9)

Country Link
US (1) US3815226A (enrdf_load_stackoverflow)
BE (1) BE781656A (enrdf_load_stackoverflow)
CH (1) CH554808A (enrdf_load_stackoverflow)
DE (1) DE2216588C3 (enrdf_load_stackoverflow)
FR (1) FR2133065A5 (enrdf_load_stackoverflow)
GB (1) GB1383839A (enrdf_load_stackoverflow)
IT (1) IT961578B (enrdf_load_stackoverflow)
LU (1) LU65101A1 (enrdf_load_stackoverflow)
NL (2) NL151316B (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911571A (en) * 1974-08-23 1975-10-14 Sunbeam Corp Can opener
US3955276A (en) * 1972-06-30 1976-05-11 Societe Anonyme Etud Electrically motor driven can opener
US6146241A (en) * 1997-11-12 2000-11-14 Fujitsu Limited Apparatus for uniform chemical mechanical polishing by intermittent lifting and reversible rotation
US20070175051A1 (en) * 2005-12-12 2007-08-02 Mah Pat Y Mechanism for can opener
US20070180712A1 (en) * 2005-12-12 2007-08-09 Mah Pat Y Mechanism for can opener
US20190129453A1 (en) * 2017-10-26 2019-05-02 Hamilton Beach Brands, Inc. Can Opener With Auto-Shutoff And Method Of Operating A Can Opener

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2258643B (en) * 1991-07-27 1995-03-29 Doherty Patrick J Electrically motor driven can opener

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624110A (en) * 1950-10-03 1953-01-06 Edward L Acker Can opener attachment
US3178813A (en) * 1962-04-10 1965-04-20 Burgess Vivrocrafters Inc Electric can opener
US3611565A (en) * 1969-02-06 1971-10-12 Rival Manufacturing Co Pushbutton operated can opener

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2624110A (en) * 1950-10-03 1953-01-06 Edward L Acker Can opener attachment
US3178813A (en) * 1962-04-10 1965-04-20 Burgess Vivrocrafters Inc Electric can opener
US3611565A (en) * 1969-02-06 1971-10-12 Rival Manufacturing Co Pushbutton operated can opener

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3955276A (en) * 1972-06-30 1976-05-11 Societe Anonyme Etud Electrically motor driven can opener
US3911571A (en) * 1974-08-23 1975-10-14 Sunbeam Corp Can opener
US6146241A (en) * 1997-11-12 2000-11-14 Fujitsu Limited Apparatus for uniform chemical mechanical polishing by intermittent lifting and reversible rotation
US20070175051A1 (en) * 2005-12-12 2007-08-02 Mah Pat Y Mechanism for can opener
US20070180712A1 (en) * 2005-12-12 2007-08-09 Mah Pat Y Mechanism for can opener
US7574808B2 (en) * 2005-12-12 2009-08-18 Daka Research Inc. (Br. Virg. Isl Corp.) Mechanism for can opener
US7596874B2 (en) 2005-12-12 2009-10-06 Daka Research Inc. Mechanism for can opener
US20190129453A1 (en) * 2017-10-26 2019-05-02 Hamilton Beach Brands, Inc. Can Opener With Auto-Shutoff And Method Of Operating A Can Opener
US10739797B2 (en) * 2017-10-26 2020-08-11 Hamilton Beach Brands, Inc. Can opener with auto-shutoff and method of operating a can opener

Also Published As

Publication number Publication date
BE781656A (fr) 1972-07-31
NL151316B (nl) 1976-11-15
CH554808A (fr) 1974-10-15
NL7609993A (nl) 1976-12-31
NL7204668A (enrdf_load_stackoverflow) 1972-10-10
DE2216588C3 (de) 1975-09-18
LU65101A1 (enrdf_load_stackoverflow) 1972-07-12
DE2216588A1 (de) 1972-10-19
DE2216588B2 (de) 1975-01-30
IT961578B (it) 1973-12-10
FR2133065A5 (enrdf_load_stackoverflow) 1972-11-24
GB1383839A (en) 1974-02-12

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