Patent US1458025A successfully refreshed from Google Patents.
US4702007A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rechargeable electric can opener
Assignee: Sanyo Electric Co Ltd
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Filing: 1986-08-14
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Granted: 1987-10-27
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Expires: 2006-08-14
Abstract
Abstract A rechargeable electric can opener including a can-feed wheel disposed on an outer face of a flat casing mounting a motor and a reduction gear mechanism therein, a cutter having a cutting edge capable of turning up-and-down to open a lid of the can in cooperation with the feed wheel, an attached plug to be inserted in an electrical outlet, a step-down transformer, and a rechargeable secondary battery. The can opener is characterized in that the plug is attached on the other face of the casing near a center of gravity which is mainly determined by locations of the motor, reduction gear mechanism, step down transformer and secondary battery.
Inventors
- 👤 Shigeo Nomura
- 👤 Syoji Nakanishi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:34
CPC Classifications
H; H02; H02J; H02J7/00; H02J7/70; B; B25; B25F; B25F5/00; B25F5/02; B67; B67B; B67B7/00; B67B7/38; B67B7/385
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
164 words
A rechargeable electric can opener including a casing of reduced thickness containing a motor and a reduction gear mechanism which is connected to a shaft of the motor, a feed wheel for carrying a can, said feed wheel being located on a first side face of the casing, said reduction gear mechanism having an output end which is connected to the feed wheel, and a cutter means for opening a lid of the can and for supporting an edge of a can in collaboration with the feed wheel; said can opener comprising an electrical connector plug attached to a second side face of the casing close to a center of gravity of the can opener capable of projecting out from and retracting into said second face, a step-down transformer having a primary side and a secondary side, said primary side being electrically connected to the plug, and a battery connected to the secondary side of the step-down transformer for feeding power to the motor.
Claim 2
Dependent Claim
164 words
A rechargeable electric can opener including a casing of reduced thickness containing a motor and a reduction gear mechanism which is connected to a shaft of the motor, a feed wheel for carrying a can, said feed wheel being located on a first side face of the casing, said reduction gear mechanism having an output end which is connected to the feed wheel, and a cutter means for opening a lid of the can and for supporting an edge of a can in collaboration with the feed wheel; said can opener comprising an electrical connector plug attached to a second side face of the casing close to a center of gravity of the can opener capable of projecting out from and retracting into said second face, a step-down transformer having a primary side and a secondary side, said primary side being electrically connected to the plug, and a battery connected to the secondary side of the step-down transformer for feeding power to the motor.
Claim 3
Dependent Claim
35 words
A rechargeable electric can opener according to claim 1, wherein said step-down transformer and battery are located at an opposite area of the casing relative to the plug, from the motor and reduction gear mechanism.
Claim 4
Dependent Claim
56 words
A rechargeable electric can opener according to claim 1, wherein said cutter means is mounted on a turning shaft which is rotatably provided on said outer face of the casing, and is formed with an arc-shaped cutting edge along a predetermined side of the cutter means; said cutting edge having a center-of-arc on said turning shaft.
Claim 5
Dependent Claim
20 words
A rechargeable electric can opener according to claim 3, wherein said cutter means is directly fixed to the turning shaft.
Claim 6
Dependent Claim
30 words
A rechargeable electric can opener according to claim 3 wherein said cutting edge has an acute top part at a corner thereof, which bites into the lid of the can.
Claim 7
Dependent Claim
22 words
A rechargeable electric can opener according to claim 5, wherein said acute top part is a notch formed on the cutting edge.
Claim 8
Dependent Claim
22 words
A rechargeable electric can opener according to claim 5, wherein said acute top part is a projection formed on the cutting edge.
Claim 9
Dependent Claim
50 words
A rechargeable electric can opener according to claim 1, wherein said casing is divided into a first piece mounting the motor, reduction gear mechanism, feed wheel, cutter and secondary battery, and a second piece to be fitted to the first piece; said second piece being provided with the plug thereon.
Claim 10
Dependent Claim
40 words
A rechargeable electric can opener according to claim 8, wherein said first piece is divided into a front part mounting the motor, reduction gear mechanism, feed wheel and cutter means, and a rear part mounting the step-down transformer and battery.
Claim 11
Dependent Claim
107 words
A rechargeable electric can opener according to claim 1, which further comprises a turning plate which is disposed in the casing and is operatively connected to the cutter means to move the cutter means vertically, a biasing means disposed in the casing usually biasing the turning plate in a direction of lowering the cutting edge, said casing having a top face provided with a second push button which is movable to turn the turning plate in a direction of raising the cutting edge in opposition to the biasing means, and a first push button on the same top face to control an electrical actuation of the motor.
Claim 12
Dependent Claim
48 words
A rechargeable electric can opener according to claim 10, wherein said first push button is positioned close to and at the rear of the second push button, said first push button having a lower projecting height from the top face of the casing than the second push button.
Claim 13
Dependent Claim
42 words
A rechargeable electric can opener according to claim 10, wherein the casing has a handle section, and said first push button and second push button are positioned within reach of a thumb of a hand gripping the handle section of the casing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-10-26 | 1991-04-27 | 1991-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-10-26 | 1995-04-27 | 1995-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-10-26 | 1999-04-27 | 1999-10-27 | $7700.00 | Window Closed / Lapsed |