Abstract: A can opener includes a housing, a driving gear, a reduction transmission device, a cutting wheel, a slide, an idling wheel, a first driven gear, a second driven gear, a torsion spring, a third driven gear, and a cam. The driving gear rotates the cutting wheel and the first driven gear. The first driven gear drives the second driven gear which rotates the third driven gear which rotates the cam which moves the slide which moves the idling wheel, so that the idling wheel is moved toward the cutting wheel to clamp the rim of the lid between the idling wheel and the cutting wheel. The idling wheel and the cutting wheel are moved along the rim of the lid to cut the rim of the lid and to separate the lid from the can to open the can automatically.

Abstract: A can opener has a cutter blade mounted with a body and a traction wheel mounted with the body on or adjacent the cutter blade. One of the cutter blade or traction wheel is movable with respect to the other between an inoperative position and an operative position. In the inoperative position the traction wheel and the cutter blade are spaced apart so that a rim of a can to be opened may be located between the traction wheel and the cutter blade. In the operative position the traction wheel and the cutter blade engage a can for opening the can. The can opener has an operating element that is operable by a user of the can opener for turning the traction wheel. Operation of the operating element also moves the cutter blade and traction wheel from the inoperative position to the operative 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: Can opener includes frame; rotating, toothed wheel cutting blade; and counterpoised drive wheel. A first, perforating relationship can provide the lid of a can with perforations about its outer boundary for draining liquids; and a second, lid boundary-releasing relationship, which is less than the first distance, can provide for the lid of the can being cut to completely sever it from the remainder of the can.

Abstract: A can opener includes a body with a handle, a traction wheel rotatably mounted on the body, an operating element for turning the traction wheel, and a cutter. The cutter is moveable between an inoperative position for receiving a rim of a can between the traction wheel and cutter, and an operative position for engaging said rim of the can between the traction wheel and cutter. A cam with a lobe engages the cutter and moves it between the inoperative and operative positions. The cam is operated by a lever.

Abstract: A can opener for opening cans of various sizes having an operating handle, which when rotated in a first direction functions to bring a sharpened cutting wheel of the can opener from an elevated position into piercing engagement with the top of the can with the butting wheel n piercing engagement with the top of the can, continued rotation of the handle will cause rotation of the can and will cause the cutter wheel to cleanly cut the top of the can so that the top can be easily removed. Reverse rotation of the handle will cause the cutting wheel to disengage from the top of the can and to return to its elevated, starting position.

Abstract: A can opener for opening cans of various sizes having an operating handle, which when rotated in a first direction functions to bring a sharpened cutting wheel of the can opener from an elevated position into piercing engagement with the top of the can with the butting wheel n piercing engagement with the top of the can, continued rotation of the handle will cause rotation of the can and will cause the cutter wheel to cleanly cut the top of the can so that the top can be easily removed. Reverse rotation of the handle will cause the cutting wheel to disengage from the top of the can and to return to its elevated, starting position.

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 hand held battery operated can opener comprising a housing; a drive located in the housing and having a can contacting drive wheel; a rechargeable battery connected to the drive; and a movable section movably connected to the housing. The movable section comprises a cutting blade. The housing is sized and shaped to be grasped by a single hand of a user in a grasping position. The grasping position comprises a back of the housing being matingly received in a palm of the hand and fingers of the hand being located at left and bottom sides of the housing and, while the user is grasping the housing in the grasping position, at least one finger of the hand can articulate to move the movable section.

Abstract: A can opener (100) comprising a pair of handles (10 and 11), a traction wheel (13) and a cutter blade (14) for removing a lid of a can in the conventional laterally-cutting manner. Embodiments of the invention include an operating knob (16) that is supported, at one side (right side as shown) of the can opener (100), to rotate about an axis transverse to a central axis of the can. The knob (16) is coupled by means of step-down gearing (17 and 18) to the traction wheel (13). This construction renders the use of the can opener (100) much more comfortable for a user. For left-handed use, the knob (16) is fitted to the opposite (left hand) side of the can opener.

Abstract: A can opener includes an elongate body, a lever hinged to the body for relative pivotal movement about a horizontal axis between open and closed positions, and a turning knob at a front end of the body. The can opener includes a traction wheel supported for rotation by the turning knob, turning a can, a rotary cutting disk rotatable by the knob for opening the can while the can is being turned, and a mounting plate rotatably supporting the cutting disk. The mounting plate is movable by the lever to slide linearly between a rearward position corresponding to the open position in which the cutting disk is spaced from the traction wheel and a forward position corresponding to the closed position in which the cutting disk is close to the traction wheel.

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: Portable metal drum openers allow the use of a cutting head with a relatively small diameter so that most metal drum covers can be removed without having to beat down or remove bungs in the cover. The cutting head is spring mounted so that the small diameter cutting head will not slip or stall when encountering a kink in the chime. The cutting head is tilted downward in the direction of cutting so that the cutting head would tend to move downward along the chime when making the cut, however, the cutting head is physically restrained from moving downward past a selected chime cutting height. The selected chime cutting height is preferably adjusted by adjusting the position of a shaft collar along threads on a cutting shaft that projects perpendicularly from the cutting head. It is preferred that the drum opener be driven either manually, or by an electric DC motor.

Abstract: An improved can opener includes a disk-like cutter having an inwardly furled rim at a lower edge thereof and pivotally connected to a press lever at a slightly slanting angle, the press lever being pivotally connected via a pivot pin to a handle having a serrated disk rotatable by a rotary knob. When the press lever and the handle are pulled away from each other about the pivot pin, the distance between the serrated disk and the cutter is increased so that a top side of the can can be placed therebetween. By pressing the press lever, the cutter will displace towards the serrated disk, with a part of its cutting blade piercing into an outer peripheral portion of the top side of the can. When the rotary knob is turned, the serrated disk is caused to displace along an inner peripheral portion of the can and the cutter is caused to rotatably cut along the outer peripheral portion of the top side of the can.

Abstract: A rotary can opening cutter provides a method of opening a can in order to reduce the possibility of spillage, facilitate consistent paint mixing and colorant addition, and provide re-sealing and subsequent mixing by shaking. After cutting, the "slug" is left to sink to the bottom of the can and thus saves any solvent or paint which was adhering to the slug. Since this operation is contemplated to occur while the can is in place under a colorant dispensing machine, the chance for spillage by actions of the paint attendant are eliminated. After colorant is added, a small plastic cap is forced into the hole to form a tight fit.

Abstract: A portable fiber drum chime remover allows the disassembly of fiber or paperboard drums on location. The height of the cutting head is adjustable so that the portable chime remover can remove both the upper metal chime and the lower metal chime during the fiber drum disassembling process. The cutting head height can be selected among predetermined settings using a grooved cutter shaft and a spring-loaded stop, or can be self-setting using the fiber drum geometry as a guide. The fiber drum chime remover preferably has a restraint element to prevent the cutting head from coming in direct contact with the drive wheel when the cutting head is engaged to cut the fiber sidewall of the drum.

Abstract: The invention is a unit that is attachable to a side face of a handle of a can opener, which unit is manually operable to engage a magnet upon the lid of a can so as to magnetically hold the lid from dropping into the contents of the can as it is cut away, and which unit is manually operable, upon the lid being cut away, to effect at the will of the user release of the hold of the magnet from the lid so as to allow the cut lid to drop for disposal from the unit and the can opener. In making use of the unit embodying the invention, the user avoids manually touching the cut lid, and in doing so he avoids soiling his fingers with the contents of the can, and avoids cutting his fingers upon the sharp edges of the cut lid.

Abstract: A can opener comprising a housing having a handle. A cutting wheel having a cutting edge for severing a can wall is mounted in the housing. There is a traction wheel having a gripping surface to engage the can. The traction wheel are rotatable and the axis rotation is substantially perpendicular to each other. The wheels are positioned adjacent and spaced apart from each other to define a gap to accept a can to be opened. One of the wheels is movable towards the other to engage and lock the can between the cutting wheel and the traction wheel. The cutting wheel then acts to sever the can wall and the traction wheel acts to move the can past the cutting wheel. There is a first thrust surface associated with the housing and a space, adjacent, second thrust surface associated with the movable 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 of the type having a housing, a motor, a feed wheel for rotating a can about its axis, a gear assembly connecting the motor and the feed wheel, and a cutter for severing a can lid from a can includes a cutter control associatively connected to the cutter and operable to bias a switch contact to a closed position while the cutter is severing the can lid from the can and to automatically open the switch contact after the can lid has been severed, the cutter control comprising an integrally formed spring operable to engage an armature mounted on the housing, and a cutter support plate supporting the cutter and associatively connected to the cutter control, the cutter support plate operable to lower a magnet assembly into contact with the can lid when the cutter is moved into contact with the can lid and to raise the magnet assembly and the can lid when the cutter is raised from the can after the can lid has been severed from the can.

Abstract: To facilitate manufacture and eliminate the possibility of sharp corners projecting from metallic elements of a can opener, a bearing bushing (21) for a feed wheel shaft (20), to which a serrated feed wheel (15) and a twist knob (16) are connected, the handle is formed of two plastic handle shells (18, 19) of which an upper handle shell (18) is a unitary molded element together with the bearing bushing (21) and a counter or guide surface (24) in part surrounding the feed wheel. The bearing bushing extends through a hole in the metallic lever (11, 12) and into an opening of the lower handle shell (19), preferably forming a snap connection, with a slightly projecting shoulder, extending above the lower handle shell.

Abstract: A can opener of the type in which the can is opened by cutting through an outer part of the rim joining the lid with the main body of the can. Cam means (51) are arranged to engage outside wall of the can immediately beneath the rim, the engagement underneath the rim moving the cam means and cutter wheel (40) against resilient means (54) to a position such that the cutter wheel makes its cut at a substantially constant predetermined distance on the rim. The drive wheel can have an outer cylindrical surface which is toothed and its lower edge bevelled or chamfered.

Abstract: A zoom lens system comprising, in order from an enlargement side, a first lens unit of a negative power, a second lens unit of a positive power and a third lens unit of a negative power. The first lens unit is fixed during a zooming operation from a longest focal length condition to a shortest focal length condition. The second and third lens units are movable from the enlargement side to a reduction side during the zooming operation, with a distance therebetween changing from a decrease to an increase.

Abstract: An electrically operated portable can opener being adjustable in height to enable opening various size cans, the can opener having a primary housing which is partially received within a secondary base housing with a rotary cam serving to control the raising and lowering of the primary housing with respect to the base housing.

Abstract: A can opener providing a circular cut around the cylindrical wall of a can below the lid and rim which are severed by the cut from the rest of the can. A pair of body members having integrally formed handles are pivoted to one another. A rotatable spindle attached to a driving wheel drives the can opener. A cutting wheel forms a nip with the driving wheel in an operating position to force the cutting edge to penetrate through the wall of the can. A mounting plate carrying the cutting wheel is slidably supported by one body member and is movable by cam means between the operating position and a retracted position as the body members are pivoted between their limits of pivoting.

Abstract: A can opener providing a circular cut around the cylindrical wall of a can below the lid and rim which are severed by the cut from the rest of the can. A pair of body members having integrally formed handles are pivoted to one another. A rotatable spindle attached to a driving wheel drives the can opener. A cutting wheel forms a nip with the driving wheel in an operating position to force the cutting edge to penetrate through the wall of the can. A mounting plate carrying the cutting wheel is slidably supported by one body member and is movable by cam means between the operating position and a retracted position as the body members are pivoted between their limits of pivoting. To prevent twisting of the body members and their integral handles, cooperating flanges and recess are provided between the body members and their handles. In the retracted position the wheel withdraws into an upstanding guard whose edge abuts the severed top and displaces it.

Abstract: A tool which operates to remove the end wall (17) of a can by cutting through an outer part of the rim (11) of the can comprises a manually rotatable drive wheel (8) and a cutter wheel (12) arranged tightly to grip a cam rim therebetween. The cutter wheel is rotatably mounted in a partially cylindrical recess (R) formed within a moulded plastics housing (10) which is arranged to locate the cutter wheel (12) and provide support therefor.

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 lightweight, hand-held portable tool for opening a smokeless tobacco container uses a rotatable cutting wheel to slit an adhesive coated paper wrapper extending around the rim of the lid and cylindrical body of the container. The tool has a top member which rests on the circular lid to fix the position of the cutting wheel at a distance therebelow. The cutting wheel is recessed in a body member perpendicularly disposed to the top member to restrict the cutting depth to the combined thickness of the rim and wrapper. The tool includes grasping surfaces for the user and a guide member shaped to conform to the side surface of the container so that the opening operation can be accomplished by revolving the tool about the body of the container as the top member rests on the lid.

Abstract: A can opener providing a circular cut around the cylindrical wall of a can below the lid and rim which are severed by the cut from the rest of the can. A pair of body members having integrally formed handles are pivoted to one another. A rotatable spindle attached to a driving wheel drives the can opener. A cutting wheel forms a nip with the driving wheel in an operating position to force the cutting edge to penetrate through the wall of the can. A mounting plate carrying the cutting wheel is slidably supported by one body member and is movable by cam means between the operating position and a retracted position as the body members are pivoted between their limits of pivoting. In the retracted position the wheel withdraws into an upstanding guard whose edge abuts the severed top and displaces it.

Abstract: An electric powered can opener has a housing, a feed gear that is motor connected and rotatably mounted to drive and rotate a can by holding it by its rim. An operating lever is pivoted above the gear on the housing and carries a cutter mechanism to remove the can lid. To this conventional arrangement an improvement is added in the cutter mechanism of a non-round cutter wheel connected to and movable by the lever and having a lobed or flat portion within the periphery and oriented so that the cutter wheel is substantially stationary as it is pulled into the can lid such that the meeting edge of the periphery at the flat and round periphery provides a power pierce whereupon the cutter wheel then rotates for a clean severing of the can lid. The cutter is preferably a dish-shaped cutter with a hollow ground flat or lobe portion. The lever is preferably spring biased for rotation toward the can at all times and has a slidable switch actuator that is linkage-connected to the lever for manual operation.

Abstract: A motor driven can opener includes a pivotal hand lever assembly which may be removed from the can opener frame. A latch on the frame engages an edge portion of the hand lever to retain the lever on the frame throughout its normal operating range. A plate on which a can cutting element is carried is mounted to slide on the forward surface of the lever. A tab projects from the plate and catches on a hardened steel pin of the frame to hold the hand lever against the actuator of a rotary switch which maintains the motor in its energized condition during shearing of a can lid. When the can shearing is completed, the tab releases from the pin to automatically deenergize the motor.A manual crank may be employed as an alternative to electrical power. The motor is removed from the drive train when the crank is employed and brought back into the drive train when the crank is removed.

Abstract: A portable can opener tool shaped as a gun, with an elongated trigger pivoted to a butt handle. Pulling of the trigger to the butt of the handle serves to rotate a can past the blade of the tool so as to cut the top of the can away from the can rim. The tool incorporates a basic frame member to which a cutter frame is pivoted at the front end of the basic frame with both the basic frame and cutter frame extending to form butt handle ends which are drawn together to clamp the cutter blade into a can top. The trigger is pivoted to the basic frame and pivotably joined to a pusher arm which bears against radial members of a shaft fixed to a rachet wheel, or alternately, the pusher arm is fitted with rachet teeth for directly bearing against the rim of a can to be rotated against the cutter blade. The cutter blade may be in the form of a free turning wheel.