US3594562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Actuating key
Assignee: Svenska Dataregister AB
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Filing: 1969-09-25
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Granted: 1971-07-20
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Expires: 1989-09-25
Abstract
Abstract An actuating key for use in a business machine having an electromagnet positioned therein so that the key may be operated by actuation of the electromagnet or may be actuated manually by the depression of the key cap. The key cap partially covers the electromagnet so as to prevent foreign matter from entering the mechanism and interfering with its operation. Also the core of the electromagnet is not attached to the key cap so that when the key is operated electromagnetically, the key cap does not move to the depressed position.
Inventors
- 👤 Gosta Roland Englund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:23
CPC Classifications
H; H01; H01H; H01H3/00; H01H3/22; H01H3/28; G; G06; G06C; G06C7/00; G06C7/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A business machine comprising an actuating key; an electromagnet having a coil adapted to be energized, a core movably arranged in the coil; a cap at least partly surrounding said electromagnet, said cap movably attached to the business machine and being adapted to move said core independently of energization of said coil and; said coil also being adapted to move said core independently of movement of said cap,.
Claim 2
Dependent Claim
68 words
A business machine comprising an actuating key; an electromagnet having a coil adapted to be energized, a core movably arranged in the coil; a cap at least partly surrounding said electromagnet, said cap movably attached to the business machine and being adapted to move said core independently of energization of said coil and; said coil also being adapted to move said core independently of movement of said cap,.
Claim 3
Dependent Claim
66 words
A business machine as in claim 1 wherein a bracket is provided on said business machine, said bracket having locking means thereon and wherein a leg projects from said cap which leg is mounted to be moved over said locking means when the cap is moved to the actuated position and to be held by the locking means when the cap is in the normal positIon.
Claim 4
Dependent Claim
23 words
A business machine as in claim 2 wherein restoring means is provided for restoring the cap and the core to the normal position.
Claim 5
Dependent Claim
32 words
A business machine as in claim 3 wherein a member is provided which is adapted to be engaged by said restoring means for restoring the cap and core to the normal position.
Claim 6
Dependent Claim
19 words
A business machine as in claim 4 wherein said member is adapted to be vertically moved by said core.
Claim 7
Dependent Claim
20 words
A business machine as in claim 5 wherein said member includes a projection which is engaged by said restoring means.
Claim 8
Dependent Claim
17 words
A business machine as in claim 6 wherein said member is positioned perpendicular to said restoring means.
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |