Abstract: The invention provides an automatic stop method and device for a can opener. When a first rotation frequency of a bearing in a first preset time is smaller than a second rotation frequency of the bearing in a subsequent second preset time in the process of opening a can by a can opener blade and a difference between the second and first frequency reaches a preset value, it is determined that repeated cutting occurs, and the blade will be stopped in time to avoid problems caused by repeated cutting. Meanwhile, mean values of multiple data acquired within the first and second preset time are calculated, avoiding the problems of an excessively high and long instant processing burden of one time of data acquisition and errors caused by data acquired once, improving the timeliness and accuracy of the first and second frequency, and can opening can be controlled more accurately.

Abstract: An adjustable can opener that includes a space adjustment assembly disposed between a main body and a washer set is provided. The space adjustment assembly includes a retaining base coupled to the main body and an adjustment shifting block fitted on the retaining base. The retaining base has a stepped portion having multiple steps. The adjustment shifting block also has a stepped portion having multiple steps. Responsive to manual rotation of the adjustment shifting block, the position where one of the steps of the adjustment shifting block is in contact with a respective one of the steps of the retaining base is changed to adjust the space between a traction wheel and a cutter wheel of the can opener.

Abstract: An easy to operate, extremely quiet, efficient can engagement and opening mechanism is provided for use in an opener for a can, and that provides a pair of missing teeth operating endpoints at opposite ends of its opener cycle, along with an eccentrically operating idler gear and cutter gear urging mechanism that produces a non-jamming foolproof mechanism that can be urged forward to a closed and operating position or reversed to a disengagement and non-operating position.

Abstract: An easy to operate, extremely quiet, efficient can engagement and opening mechanism is provided for use in an opener for a can, and that provides a pair of missing teeth operating endpoints at opposite ends of its opener cycle, along with an eccentrically operating idler gear and cutter gear urging mechanism that produces a non-jamming foolproof mechanism that can be urged forward to a closed and operating position or reversed to a disengagement and non-operating position.

Abstract: A can opener has first and second operating elements pivotal with respect to one another. The first operating element has a rotatable traction wheel and the second operating element has a cutting assembly. The operating elements pivot such that traction wheel and cutter assembly are moveable between an inoperative position and an operative position. In the inoperative position, the traction wheel and cutter assembly are spaced from one another so that the rim of the can to be opened is locatable between the traction wheel and cutter assembly. In the operative position, the traction wheel and the cutter assembly are in close proximity and engagable with the can to effect opening of the can. The cutter assembly has an axle engaged with the second operating element at a first end and has a thread at a second end. A rotatable circular cutting blade is located on the axle between the first and second ends and is held in place by a nut engaged with the thread. A decorative cover covers the nut.

Abstract: There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to the body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to the cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutting knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

Abstract: There is provided a mechanism for use in a can opener comprising a body; rotationally mounting to the body about a first axis, a drive wheel for engaging the rim of the can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to the cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutting knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, and in which an electrical sensor can be used to reverse the position of the cutting wheel back to a start position and in which a mechanical sensor can be used in conjunction with a locking bar to advance the cutting wheel back to a start position.

Abstract: A mechanism is provided for use in a can opener comprising a body; rotationally mounting to the body about a first axis a drive wheel for engaging the rim of a can; rotationally mounting to the body about a second axis and drivably rotatable by the drive wheel, a cutter wheel; eccentrically mounting to said cutter wheel, a cutting knife movable on rotation of the cutter wheel to a cutting position in which the cutter knife forms a nip with the drive wheel such that the cutting knife penetrates through the cylindrical wall of the can, to provide a cut therein as the opener orbits relatively therearound, wherein the cutting position is defined by a cutting interval corresponding to a segment of rotation of the cutter wheel in which the cutting knife is sufficiently proximal to the drive wheel to form the nip.

Abstract: The can opener is a side-cutting opener with handle levers which pivot vertically towards and away from one another. A rotary cutter wheel is normally retracted to a position inside one of said handle levers, but is thrust outwardly to cut into the rim of the can when the handle levers are squeezed together. A drive wheel engages the rim and is rotated by means of a rotary drive handle to cut the top off the can. Spreading the handle levers apart causes the cutting wheel to retract at the end of the cutting operation to release the cut-off top of the can.

Abstract: A can opener has a shaft for effecting rotation of a traction wheel for moving a can relative to a cutting wheel to sever an upper annular lateral side of the can, and is equipped with an adjustment element, which is screwed onto a threaded outward end portion of the shaft, and which has two wing portions in contact with corresponding sloping portions of a hexagonal member so that when the shaft is turned together with a rotary lever in the cutting direction, the hexagonal member is first turned relative to the adjustment element for a small angle for the higher portions of the sloping portions to be pressed against the wing portions to cause reduction to the space between the traction wheel and the cutting wheel; thus, the wheels can clip an annular wall of a end cover of a can in between.

Abstract: A manually operable can opener includes elongate first and second operating elements pivotally connected to each other intermediate their ends and having first and second handle members respectively. The can opener has a traction wheel rotatably mounted on the first operating element and a cutter blade rotatably mounted at an inclined angle on the second operating element. At least two abutment surfaces provided on the can opener for engagement with the axially outer edge of the rim of a can. The first abutment surface is operatively forward of the cutter blade and the second abutment surface operatively follows the cutter blade. In use the axially outer edge of the rim can convexly deform proximate the cutter blade. The traction wheel has a radial surface with teeth orientated to engage the radially inner surface of the can rim and an axial surface with teeth orientated to engage the axially outer rim of the can.

Abstract: A can opener includes a pair of handles, a traction wheel, and a cutter blade for removing a lid of a can. An operating knob is supported at one side of the can opener and rotates about an axis transverse to a central axis of a can being opened. The knob is coupled by step-down gearing to the traction wheel. For a left-handed user, the knob is mounted on the opposite side of the can opener.

Abstract: A can opener has two relatively pivotable body portions (1,2), one carrying a rotary cutting wheel (8) and the other a rotary traction wheel (12) having parallel axes, the opener being arranged to receive the rim (R) of a can (C) between the two wheels and to orbit the can as the traction wheel is rotated while the cutting wheel makes a peripheral cut, the traction wheel (12) being shaped to distort the rim during cutting and the cutting wheel (8) having an outwardly angled body portion (10c, 10d), adjacent its cutting tip (10a, 10b), the angled body portion being adapted to contact the outside of the rim below the cut to exert a force in the opposite direction to the traction wheel (12).

Abstract: A manual can opener that can be operated with ease by both left-handed and right-handed users is provided. The initial rotation of an operating handle in either direction moves a transport wheel linearly toward a cutting blade to engage the end of the can, and simultaneously cants the cutting blade in a direction opposite that of handle rotation so that it is in proper condition to cut the end from the can. Further rotation of the operating handle, in the direction of the initial rotation, then forces the can against the blade to cut the end of the can.

Abstract: A dual-handle pump-action can opener that can be operated by either hand and cuts the exterior wall of the seam of a can, rather than the top lip of the can. The dual-handle pump-action can opener includes: (a) a housing having a first handle; (b) a cutting wheel associated with the housing and the first handle and having a cutting edge for severing the exterior wall of the can seam; (c) a traction wheel associated with the housing and the first handle and having a gripping surface for engaging the interior wall of the can seam; and (d) a second handle which is movable towards and away from the first handle. When the second handle is initially moved towards the first handle after the can opener is installed on the seam of the can, it causes the traction wheel to contact the interior wall of the can seam and the cutting wheel to contact the exterior wall of the can seam.

Abstract: An improved outer wall can opener includes a retractable and extendable traction wheel which selectively grips a can to be opened between it and an outer seam wall cutting wheel. The cutting wheel is a ring which is supported by a generally cylindrical stepped bearing which steps outward in increments and also mounts an abutment ring with an outside diameter slightly larger than the outside diameter of the cutting ring. The stepped bearing with the attached cutter ring and abutment ring rotates around a stationary shaft, thus preventing overwear of the cutting ring and allowing wear that does occur to the cutting ring to be uniform and gradual.

Abstract: The present invention is a can opener with a manual turning knob and a magnet. The can opener has a first cutting side, second turning side, an upper handle, and a lower handle. The manual turning knob comprises a wheel with indentations. The top of the wheel may be flat, allowing the user to turn the wheel with his or her palm. The manual turning knob is disposed adjacently to the second turning side on a pivot post which intersects the lower handle. Attached on the opposite end of the pivot post is a driving toothed wheel which rotates upon rotation of the manual turning knob. A cutting edge or disk is disposed adjacently to the first cutting side on an upper rivet, the upper rivet extending out from the first cutting side of the upper handle. A magnet is disposed on or adjacent to the cutting disk such that a completely severed lid of a can will rotate toward the magnet. The magnet and cutting edge are angled downward toward the lid of the can.

Abstract: A manually operable can opener of the rim-cutting type comprises a rotatable traction wheel (22) of generally cylindrical configuration and a freely rotatable circular cutter blade (48) wherein the rotational axis of the cutter blade is inclined to the rotational axis of the wheel at an angle of substantially 6.degree.. In their operative position, the cutter blade (48) penetrates a radially outer thickness of metal material comprising the rim but does not cut completely through the rim whereby the can end (62) may be cut leaving a smooth edge both to the end (62) and the side wall (68) of the can. Complete separation of the cut end from the can body is facilitated by gripper jaws (70, 72) movable by the user to grip that part of the rim attached to the can end to hold and detach it from the remainder of the rim attached to the can body.

Abstract: A side cutting can opener with a double grip includes an upper and a lower grip. When the two grips are closed, a cutter and a pull wheel can clamp a lip of a can and cut an outer edge of the lip off with the cutter rotated by a rotatable grip. The upper and the lower grip respectively has a combine end facing each other and provided with a ratchet wheel. The two grips are easily closed vertically from an open position to force the cutter and the pull wheel clamp the lip of a can. Then the rotatable grip at the right side of the grips can be easily rotated to force the cutter move along and cut the outer edge of the lip of a can.

Abstract: A can opener has two relatively pivotable body portions, one carrying a rotary cutting wheel and the other a rotary traction wheel having parallel axes, the opener being arranged to receive the rim of a can between the two wheels and to orbit the can as the traction wheel is rotated while the cutting wheel makes a peripheral cut, the traction wheel being shaped to distort the rim during cutting and the cutting wheel having an outwardly angled body portion, adjacent its cutting tip, then angled body portion being adapted to contact the outside of the rim below the cut to exert a force in the opposite direction to the traction wheel.

Abstract: The invention relates to a can opener which removes the lid (E) of a can by cutting through an outer part of the rim (R) of the lid. The can opener comprises two body portions arranged for relative pivotal movement about an axis, one portion carrying a rotary cutting wheel (10) and the other portion carrying a rotary traction wheel (12). The latter is shaped to distort the rim of the can while it is being cut by the cutting wheel whereby the overlapping engagement between the end wall of the can and the side wall of the can is loosened. To distort the rim, the traction wheel includes a portion having a surface adapted to engage, in use, the inner side wall of the rim, the said surface being inclined at an angle greater than the angle of the inclination of the rim with respect to the vertical axis of the can.

Abstract: A can opener includes a pair of pivoted handle members (101), (102), associated with a drive wheel (108) and a cutting wheel (111), which are brought into a position to nip the rim of a can when the handles are closed. The nip on the can is not lost when the handle members are partially opened to an intermediate position. As shown the cutting wheel is pivotally mounted on a rotatable carrier (112) in the handle (101) and has a projection (104) entering a recess (105) in the handle (102). The recess allows the handle (102) to move between the closed and intermediate positions without disturbing the carrier (112). Closing the handle (102) drives a drive shaft (110) carrying the wheel (108) through gearing (153), (154), (155). A one-way clutch spring (116) slips when the handles open so that repeated opening and closing of the handles cuts round the can.

Abstract: In the invention of a manually operated can opener, an angular drive shaft attaches to the upper handle of a pivotally connected pair of handles. At the higher end of said drive shaft, a crank is rigidly attached and at the lower end, to rotate therewith, a combination of a polygonal feed wheel and a cutting wheel forming a gripping groove, attaches. Said gripping groove fits on the top rim of the can to be opened and assisted by a free-rotating smooth-rimmed pressure wheel, which attaches to the lower handle and fits under the bottom lip of the can bead, provides the forward thrust, when the crank is turned, while the cutting wheel pierces and closely cuts the can lid. The gripping groove and pressure wheel combine to form a controllable continuously variable clutch. The polygonal feed wheel also provides a means for the easy removal and replacement of the cutting wheel for cleaning of same.

Abstract: In a can opener having a traction wheel (18) for driving the end seam (26) of a can past the opener, and a cutter wheel (16) for severing the outer seaming wall of the seam, the axes (36,38) of the wheels being mutually perpendicular, the working parts are carried in a common cartridge (58) of metal, mounted removably in the housing (10) of the opener, the cutter wheel and its spindle (74) being integral with each other and mounted in a separate bearing cup (66) fixed in the body (60) of the cartridge and having a thrust bearing (68) remote from the cutter wheel. The housing carries a projecting abutment (54) having a forwardly curved seam-engaging surface which enables a variety of shapes and sizes of cans to be opened.

Abstract: This invention provides a can opener blade wherein the two primary sides forming the bevelled cutting edge have a certain angular relationship with the centerline of said blade; the blade of this invention has certain advantages over known can opener blades.

Abstract: A tin opener mainly comprising a housing (1), a drive shaft (2) rotatably arranged in the housing (1) for a transport wheel (3) located outside the housing (1), a body (7) rotatably arranged about a second shaft (A--A) parallel to the driving shaft in the housing (1) for supporting a cutting wheel (1) rotatable about a third shaft, the third shaft being at an angle of the second shaft, wherein the body is provided with a radial slot (13) whereas a lug (6) moved by the driving shaft (2) in a circular path and being displaceable with respect thereto, is adapted to be, each time, introduced into a slot (13) through an angle in order to minimize the force required to penetrate into the tin, that is to cut into the tin cover at the beginning of the cutting cycle.

Abstract: A tin opener intended for opening a tin by wholly or partially cutting away a part of the tin from the remainder. The actual cutting operation is effected by a cutter roll which can be rotated about an axis of rotation and which during the cutting operation is rotated by a drive shaft via a driving gear-wheel and a gear-wheel. During the cutting process the tin is supported by a feed roll which is in driving engagement with the tin and secured to the drive shaft. In order to enable a tin which is to be opened to be introduced between the cutter roll and the feed roll, or to enable a tin which has been opened to be removed therefrom, the cutter roll is mounted in such a way as to be capable of being rotated about a second axis away from the axis of the drive shaft and the feed roll. The mounting is such that the axis of rotation is inclined in relation to the other axis and extends at a distance from the latter.