US3622720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Calculator keyboard cover interlock with a display cover and switch
Assignee: SCM Corp
•
Filing: 1970-08-19
•
Granted: 1971-11-23
•
Expires: 1990-08-19
Abstract
Abstract An electronic calculator comprising an input keyboad panel, an output display panel, and first and second cover means mounted for movement between positions covering and positions uncovering the panels. The calculator further comprises a calculator power switch mounted for movement between power-on and power-off positions. Means are provided for setting the power switch in the power-on position when the cover means are moved to their uncovering positions, and for setting the power switch in the power-off position when the cover means are moved to their covering positions. Means are also provide to permit manual movement of the power switch between its power-on and its poweroff positions when the cover means are located in their uncovering positions. means are further provided for inhibitig manual movement of the power switch from its power-off to its power-on position when the cover means are located in their covering positions.
Inventors
- 👤 William A Allen Berkeley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 05:10
CPC Classifications
G; G06; G06F; G06F15/00; G06F15/02; G06F15/0216; G06C; G06C7/00; G06C7/02; G06F1/00; G06F1/16; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; H; H01; H01H; H01H2223/00; H01H2223/044
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
133 words
An electronic calculator comprising an input keyboard panel, an output display panel, first and second cover means mounted for movement between positions covering and positions uncovering said panels, a calculator power switch mounted to said calculator for movement between power-on and power-off positions, means for setting said switch in said power-on position when said cover means are moved to said uncovering positions and for setting said power switch in said power-off position when said cover means are moved to said covering positions, means for permitting manual movement of said power switch between said power-on and power-off positions when said cover means are located in said uncovering positions and for inhibiting manual movement of said power switch from said power-off to said power-on position when said cover means are located in said covering positions.
Claim 2
Dependent Claim
133 words
An electronic calculator comprising an input keyboard panel, an output display panel, first and second cover means mounted for movement between positions covering and positions uncovering said panels, a calculator power switch mounted to said calculator for movement between power-on and power-off positions, means for setting said switch in said power-on position when said cover means are moved to said uncovering positions and for setting said power switch in said power-off position when said cover means are moved to said covering positions, means for permitting manual movement of said power switch between said power-on and power-off positions when said cover means are located in said uncovering positions and for inhibiting manual movement of said power switch from said power-off to said power-on position when said cover means are located in said covering positions.
Claim 3
Dependent Claim
18 words
An electronic calculator in accordance with claim 1 comprising linking means connecting said first and second cover means.
Claim 4
Dependent Claim
15 words
An electronic calculator in accordance with claim 2 wherein said linking means comprises a bell-crank.
Claim 5
Dependent Claim
27 words
An electronic calculator in accordance with claim 1 wherein said first cover is mounted for substantially planar movement and said second cover is mounted for rotational movement.
Claim 6
Dependent Claim
48 words
An electronic calculator in accordance with claim 1 wherein said second cover means is mounted for rotation about a first axis and wherein said setting means includes a rocking structure pivotably mounted to the calculator for rotation about a second axis disposed substantially parallel to said First axis.
Claim 7
Dependent Claim
25 words
An electronic calculator in accordance with claim 5 wherein said permitting and inhibiting means includes a flexible member affixed to aid pivotably mounted rocking structure.
Claim 8
Dependent Claim
46 words
An electronic calculator in accordance with claim 1 wherein said second cover means is mounted for rotation about a first axis and wherein said permitting and inhibiting means includes a member disposed for rotational movement about a second axis disposed substantially parallel to said first axis.
Claim 9
Dependent Claim
101 words
An electronic calculator comprising a rotatably mounted cover having a projection affixed thereto and an externally accessible power on-off switch, said power on-off switch comprising a rocking member mounted for movement in a discrete plane of motion, said switch rocking member having a flexible member affixed thereto located adjacent said projection with said flexible member being yieldable in directions substantially normal to said discrete plane of motion beyond an end of said projection, said flexible member having a leading surface beveled with respect to said discrete plane of motion and to a surface of said projection located adjacent said flexible member.
Claim 10
Dependent Claim
101 words
An electronic calculator comprising a rotatably mounted cover having a projection affixed thereto and an externally accessible power on-off switch, said power on-off switch comprising a rocking member mounted for movement in a discrete plane of motion, said switch rocking member having a flexible member affixed thereto located adjacent said projection with said flexible member being yieldable in directions substantially normal to said discrete plane of motion beyond an end of said projection, said flexible member having a leading surface beveled with respect to said discrete plane of motion and to a surface of said projection located adjacent said flexible member.
Claim 11
Dependent Claim
58 words
An electronic calculator in accordance with claim 8 wherein said power on-off switch further comprises a switch actuator located adjacent said rocking member in said discrete plane of motion whereby said actuator may be depressed and released as said rocking member is moved in said discrete plane of motion into and out of contact with said switch actuator.
Claim 12
Dependent Claim
80 words
An electronic calculator in accordance with claim 8 wherein said rocking member has a planar surface disposed substantially normal said discrete plane of motion and said flexible member has a planar surface also disposed substantially normal said discrete plane of motion, said two planar surfaces being spaced from one another and located substantially opposed to and parallel with one another in juxtaposed relation with said cover projection locatable between said two planar surfaces by movement of said rotatably mounted cover.
Claim 13
Dependent Claim
51 words
An electronic calculator in accordance with claim 8 comprising a second cover mounted for planar movement and linking means pivotably mounted to the calculator in contact with said rotatably mounted cover and said second cover whereby planar movement of said second cover may cause rotational movement of said rotatably mounted cover.
Claim 14
Dependent Claim
15 words
An electronic calculator in accordance with claim 11 wherein said linking means comprises a bell-crank.
Claim 15
Dependent Claim
91 words
An electronic calculator comprising a keyboard, a keyboard cover, a visual display panel, a visual display panel cover, linking means between said keyboard cover and said visual display panel cover to cause movement of said visual display panel cover with respect to said visual display panel upon movement of said keyboard cover with respect to said keyboard, and a power on-off switch comprising a pivotable member having a surface disposed for external, manual accessibility and a flexible finger member located adjacent said visual display panel and affixed to said pivotable member.
Claim 16
Dependent Claim
91 words
An electronic calculator comprising a keyboard, a keyboard cover, a visual display panel, a visual display panel cover, linking means between said keyboard cover and said visual display panel cover to cause movement of said visual display panel cover with respect to said visual display panel upon movement of said keyboard cover with respect to said keyboard, and a power on-off switch comprising a pivotable member having a surface disposed for external, manual accessibility and a flexible finger member located adjacent said visual display panel and affixed to said pivotable member.
Claim 17
Dependent Claim
31 words
An electronic calculator in accordance with claim 13 wherein said visual display cover and said pivotable member are respectively mounted to said calculator for pivotable movement about two-spaced, substantially parallel axes.
Claim 18
Dependent Claim
56 words
An electronic calculator in accordance with claim 14 wherein said visual display cover has a projection located adjacent said flexible finger member at a distance from the axis about which said visual display cove pivots greater than the distance from which said flexible finger member is located from the axis about which said pivotable member pivots.
Claim 19
Dependent Claim
15 words
An electronic calculator in accordance with claim 13 wherein said linking means is a bell-crank.
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) | 1974-11-22 | 1975-05-24 | 1975-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-22 | 1979-05-24 | 1979-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-22 | 1983-05-24 | 1983-11-23 | $7700.00 | Window Closed / Lapsed |