US3594901A - Wall can opener - Google Patents
Wall can opener Download PDFInfo
- Publication number
- US3594901A US3594901A US795253*A US3594901DA US3594901A US 3594901 A US3594901 A US 3594901A US 3594901D A US3594901D A US 3594901DA US 3594901 A US3594901 A US 3594901A
- Authority
- US
- United States
- Prior art keywords
- coupling member
- coupling
- knife
- lever
- cam
- 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
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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
- B67B7/30—Hand-operated cutting devices
- B67B7/34—Hand-operated cutting devices with rotatable cutters
Definitions
- a wall can opener comprises a knurled wheel and a circular knife adapted to clamp a can between them and PATENTED JUL27
- SHEET 1 OF 4 PATENTEU JUL27 i9 pleases to open a knurled wheel and a circular knife adapted to clamp a can between them.
- the invention relates to a wall can opener, and in particular to a wall can opener wherein the rim of a can is clamped between a knurled wheel and a circular knife which are coupled with each other in an active position of the knife, and which may be rotated by means of a crank, so that the knife cuts through the top of the can.
- crank and the knife are arranged on different sides of the opener, and the crank shaft is parallel to the wall on which the opener is attached. Since the crank must be able to turn freely past the wall, the crankshaft must be spaced from the wall at a relatively large distance, so that the opener protrudes far from the wall.
- the crank is arranged on the same side of the opener as the knife.
- the crankshaft is perpendicular to the wall and spaced with respect to the knife at such a distance that the crank may freely rotate past the clamped can.
- the crankshaft is coupled with the shaft of the knurled wheel by means ofa transmission.
- crankshaft and the shaft of the knurled wheel'each carry a gear, and the gears are intercoupled by means of at least one intermediate gear.
- the knife In the conventional wall can openers, the knife has a rest position in which it is spaced from the knurled wheel, so that the can may be readily inserted. At the beginning of the rotation of the crank, the knife moves toward the knurled wheel and is coupled with the same. After the can has been opened, the crank is rotated in reverse direction, whereby the knife is returned to its rest position, and the can is released.
- the knife is rotatably supported on a lever which is kept in a rest position by a spring, and which may be brought into an active position by a spring, and which may be brought into an active position by a cam freely rotatable about the shaft of an intermediate gear.
- the cam is coupled with the intermediate gear in the rest position of the lever, but this coupling is interrupted when the lever reaches its active position. When the intermediate gear is rotated in reverse direction, the coupling is restored.
- the cam is coupled with the intermediate gear by a coupling member which is slidable in a radial recess of the cam, and which is urged outwardly by a spring in its coupling position, so that the coupling member extends beyond the circumference of the cam.
- a coupling member which is slidable in a radial recess of the cam, and which is urged outwardly by a spring in its coupling position, so that the coupling member extends beyond the circumference of the cam.
- FIG. 1 is a rear view of a wall can opener according to the invention, wherein the back plate is removed and the gears are only partially shown, in order that the underlying parts are rendered visible.
- FIG. 2 is a cross section taken on line Il-II in FIG. 1.
- FIG. 3 is a rear view of the opener shown in FIG. 1, showing the back plate and the means for attaching the opener to the wall.
- FIG. 4 shows schematically the operation of the means for displacing the lever on which the knife is supported.
- the wall can opener as shown comprises four gears 1,2, 3, and 4, arranged in such manner that successive gears are in engagement with each other.
- the gears are made of a synthetic material, such as a polyamide, and are rotatably supported on one side in a metal housing 5 having upturned edges, and on the other side in a metal back plate 6, attached to the housing by means of screws 7.
- the back plate has been omitted in FIG. 1 for the sake of clarity.
- the gear 1 is mounted on the shaft of a crank 8 which is provided with a handle 9 made of a synthetic plastic material.
- a knurled wheel 10 (cf. FIG. 2), which is mounted on the shaft of gear 4, cooperates with a circular knife 11. In the rest position of the opener, the knife 11 is spaced at some distance above the knurled wheel 10, so that a can to be opened may be readily inserted therebetween.
- the can is placed with its sidewall against the knurled wheel 10, so as to be supported by a plate 12, which is attached to the housing 5 by means of a twisted lip 13.
- the knife 11 is moved toward the knurled wheel 10 in a manner to be described hereinafter, whereby the rim of the can is clamped between the knife and the knurled wheel.
- the knife is coupled with the knurled wheel by means ofa pair of gears 14 and 15.
- the crank is rotated in reverse direction, whereby the knife 11 is removed from the knurled wheel 10, so that the can is released.
- the knife 11 is rotatably supported on a lever 16, reinforced by an upturned edge 17, and guided by an angle member 18 attached to the upturned edge of the housing 5.
- a recess 19 having the shape of a pyramid is formed in the lever 16 by deep drawing a portion thereof.
- the knife 11 is rotatable about a shaft 20 secured to one of the side faces of the lever at recess 19 (cf. FIG. 2).
- the lever 16 is pivotable about a fulcrum 21.
- a spring 22 serves to keep the lever in a rest position which has been shown in dotted lines in FIGS. 1 and 4. In this rest position, the knife 11 is spaced at some distance from the knurled wheel 10.
- the lever 16 may be brought into anactive position by means of a cam 23, which is freely rotatable on the shaft of the intermediate gear 2, and which is preferably made of a synthetic plastic material, such as a polyamide. In the rest position of the opener, the cam 23 is coupled with the intermediate gear 2, so that it is taken along when the crank 8 is rotated, whereby the lever 16 is brought into its active position.
- the cam is decoupled from the gear 2, so that the gear may rotate during the cutting operation without taking along the cam.
- the cam is again coupled with the gear 2, so that the lever 16 is released, and returned to its rest position by the spring 22.
- the coupling between the gear 2 and the cam 23 is achieved by a coupling member 24, which is slidable in a radial recess of the cam.
- the coupling member 24 In the rest position of the opener, the coupling member 24 is pushed to the outside by a spring 25 so as to extend outside the circumference of the cam, as shown on the left in FIG. 1.
- the coupling member As soon as the cam has been turned through such an angle as to engage the lever l6, the coupling member is pushed in, whereby the coupling between the cam 23 and the gear is interrupted.
- the coupling member 24 is provided with an axial projection extending from the cam at its rear side. This projection serves to couple the cam with the gear 2.
- the projection In the decoupling position, i.e. when the coupling member has been pushed in, the projection lies in an annular groove 26 of the gear 2, so that the gear may turn freely without taking the cam along.
- the projection in the coupling position, i.e. when the coupling member has been pushed to the outside by the spring 25, the projection lies in recess 27 provided in the outer wall of the groove 26, whereby the cam and the gear are intercoupled.
- One of the substantially radial sidewalls 28 of the recess 27 extends inwardly a larger distance than the other sidewall, so as to form an abutment.
- the gear 2 rotates in clockwise direction, as seen in FIGS. 1 and 4, so that the projection of the coupling member does not engage said abutment, and the coupling member may pass unimpededly.
- the abutment engages the projection of the coupling member, so that the cam 23 is returned to its rest position.
- the coupling member is thereby released from the lever 16, so that it may return to its original coupling position.
- the lever 16 is returned to the rest position by the spring 22, whereby the knife 1] is removed from the knurled wheel 10.
- the can 23 lies against an abutment 29.
- FIG. 3 shows how the opener may be secured to a wall.
- a holder 30 having substantially the shape of a trapezium and provided with inclined forwardly directed edges 31, is secured to the wall by means of screws.
- the back plate 6 of the opener is provided with backwardly directed lips 32 cooperating with the edges 31.
- the opener may be slid with its lips 32 onto the holder.
- a protective cap 33 is provided above the knife 11. This cap is secured by means of projections 34, clamped in slots of forwardly directed lips of the housing 5.
- a wall can opener comprising a housing, a knurled wheel, a shaft for said knurled wheel rotatably supported in said housing, a circular knife adapted to occupy a rest position and an active position and to clamp the rim of a can in its active position together with said knurled wheel, means for coupling said knife in rotation with said knurled wheel in the active position of said knife, a crank including a crankshaft, arranged on the same side of the opener as said knife and spaced from said knife at such a distance that said crank may freely rotate past a clamped can, a transmission coupling said crankshaft with the shaft of said knurled wheel and including a first gear mounted on said crankshaft, a second gear mounted on the shaft of said knurled wheel, and at least one intermediate gear coupling said first gear with said second gear and including a shaft, for displacing said knife and a lever pivotably supported in said housing and adapted to occupy a rest position and an
- a wall can opener as claimed in claim 2 wherein the radial recess is bounded by substantially radial sidewalls, one of the substantially radial sidewalls of said radial recess extending inwardly a greater distance than the other sidewall so as to form an abutment constituting said camming surface and which passes said axial projection during the cutting operation, but engages said axial projection upon reverse rotation of said intermediate gear.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Opening Bottles Or Cans (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL686801995A NL154987B (nl) | 1968-02-13 | 1968-02-13 | Wandblikopener. |
Publications (1)
Publication Number | Publication Date |
---|---|
US3594901A true US3594901A (en) | 1971-07-27 |
Family
ID=19802741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US795253*A Expired - Lifetime US3594901A (en) | 1968-02-13 | 1969-01-30 | Wall can opener |
Country Status (4)
Country | Link |
---|---|
US (1) | US3594901A (pl) |
BE (1) | BE728236A (pl) |
FR (1) | FR2001803A1 (pl) |
NL (1) | NL154987B (pl) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6119352A (en) * | 1998-06-09 | 2000-09-19 | Adamczak; Gregory Mark | Manual left or right hand can opener |
US9221665B1 (en) * | 2013-12-05 | 2015-12-29 | Gregory Mark Adamczak | Manual left or right hand can opener with tilt and rotating spherical joint |
US20180265341A1 (en) * | 2017-03-17 | 2018-09-20 | Gregory Mark Adamczak | Electric can opener with rotating spherical joint |
US10710800B2 (en) | 2017-11-17 | 2020-07-14 | Kohler Co. | Trash can |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411099A (en) * | 1944-09-04 | 1946-11-12 | Thomas A Long | Can opener |
US3083455A (en) * | 1961-08-01 | 1963-04-02 | Carleton S Marden | Can opener |
-
1968
- 1968-02-13 NL NL686801995A patent/NL154987B/xx not_active IP Right Cessation
-
1969
- 1969-01-30 US US795253*A patent/US3594901A/en not_active Expired - Lifetime
- 1969-02-11 BE BE728236D patent/BE728236A/xx not_active IP Right Cessation
- 1969-02-12 FR FR6903323A patent/FR2001803A1/fr not_active Withdrawn
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2411099A (en) * | 1944-09-04 | 1946-11-12 | Thomas A Long | Can opener |
US3083455A (en) * | 1961-08-01 | 1963-04-02 | Carleton S Marden | Can opener |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6119352A (en) * | 1998-06-09 | 2000-09-19 | Adamczak; Gregory Mark | Manual left or right hand can opener |
US9221665B1 (en) * | 2013-12-05 | 2015-12-29 | Gregory Mark Adamczak | Manual left or right hand can opener with tilt and rotating spherical joint |
US20180265341A1 (en) * | 2017-03-17 | 2018-09-20 | Gregory Mark Adamczak | Electric can opener with rotating spherical joint |
US10710800B2 (en) | 2017-11-17 | 2020-07-14 | Kohler Co. | Trash can |
US11634276B2 (en) | 2017-11-17 | 2023-04-25 | Kohler Co. | Trash can |
Also Published As
Publication number | Publication date |
---|---|
DE1906918B2 (de) | 1976-03-18 |
DE1906918A1 (de) | 1969-09-04 |
NL6801995A (pl) | 1969-08-15 |
NL154987B (nl) | 1977-11-15 |
BE728236A (pl) | 1969-07-16 |
FR2001803A1 (pl) | 1969-10-03 |
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