US5287245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Computer having ejectable keyboard ejected by damping device
Assignee: Lenovo Singapore Pte Ltd
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Filing: 1992-11-13
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Granted: 1994-02-15
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Expires: 2012-11-13
Abstract
Abstract A keyboard storage and retrieval system for a computer is provided, the system comprising a flat panel display, an enclosure, a removable keyboard slidably attached to the enclosure, and a latching system for lockingly securing the removable keyboard to the enclosure. The latching system includes a manually operated damping device for ejecting the removable keyboard from the enclosure and a manually operated mechanical latching device for securing the removable keyboard to the enclosure. The flat panel display is movable to a closed position on the enclosure to actuate the latching device to prevent the damping device from ejecting the removable keyboard from the enclosure.
Inventors
- 👤 Samuel A. M. Lucente
- 👤 Richard F. Sapper
- 👤 Atsuhisa Naitoh
- 👤 Seita Horikoshi
- 👤 Mikio Kurihara
- 👤 Kazuhide Yoshihara
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:27
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/16; G06F1/1613; G06F1/1615; G06F1/1616; G06F1/1633; G06F1/1656; G06F1/1662; G06F1/1669; Y; Y10; Y10T; Y10T292/00; Y10T292/08; Y10T292/096; Y10T292/0969; Y10T292/0999; Y10T292/1003
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
63 words
A laptop computer having an ejectable keyboard, comprising: a laptop enclosure; an ejectable keyboard slidably contained within said laptop enclosure; and a latching system for lockingly securing said ejectable keyboard within said laptop enclosure, said latching system including a damping device for ejecting said ejectable keyboard from within said enclosure and a mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 2
Dependent Claim
63 words
A laptop computer having an ejectable keyboard, comprising: a laptop enclosure; an ejectable keyboard slidably contained within said laptop enclosure; and a latching system for lockingly securing said ejectable keyboard within said laptop enclosure, said latching system including a damping device for ejecting said ejectable keyboard from within said enclosure and a mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 3
Dependent Claim
33 words
The system of claim 1, wherein said damping device for ejecting said ejectable keyboard from said enclosure and said mechanical latching device for securing said ejectable keyboard within said enclosure are manually operated.
Claim 4
Dependent Claim
42 words
The system of claim 2, wherein said laptop computer includes a flat panel display which is movable to a closed position on said enclosure to actuate said latching device to prevent said damping device from ejecting said ejectable keyboard from said enclosure.
Claim 5
Dependent Claim
25 words
The system of claim 3, wherein handwritten messages may be written onto said flat panel display via a stylus and recognized by said laptop computer.
Claim 6
Dependent Claim
16 words
The system of claim 3, wherein said flat panel display is hingedly attached to said enclosure.
Claim 7
Dependent Claim
18 words
The system of claim 3, wherein said ejectable keyboard is attached to the laptop computer via a cable.
Claim 8
Dependent Claim
26 words
The system of claim 3, wherein said wherein said ejectable keyboard is completely detachable from said enclosure, using infrared signals to communicate with the laptop computer.
Claim 9
Dependent Claim
60 words
The system of claim 2, wherein said latching device includes (i) a latching device housing which is fixedly attached to said enclosure; (ii) a plunger which is slidable within said latching device housing; and (iii) a locking pin which is slidable within said plunger to engage a corresponding recess in said ejectable keyboard to secure said keyboard within said enclosure.
Claim 10
Dependent Claim
30 words
The system of claim 8, wherein said plunger is biased against said latching device housing by a spring, and said locking pin is biased against said plunger by a spring.
Claim 11
Dependent Claim
63 words
A computer having an ejectable keyboard, comprising: an enclosure; an ejectable keyboard slidably contained within said enclosure; and a latching system for lockingly securing said ejectable keyboard within said enclosure, said latching system comprising a manually operated damping device for ejecting said ejectable keyboard from within said enclosure and a manually operated mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 12
Dependent Claim
63 words
A computer having an ejectable keyboard, comprising: an enclosure; an ejectable keyboard slidably contained within said enclosure; and a latching system for lockingly securing said ejectable keyboard within said enclosure, said latching system comprising a manually operated damping device for ejecting said ejectable keyboard from within said enclosure and a manually operated mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 13
Dependent Claim
41 words
The system of claim 10, wherein said computer includes a flat panel display which is movable to a closed position on said enclosure to actuate said latching device to prevent said damping device from ejecting said ejectable keyboard from said enclosure.
Claim 14
Dependent Claim
24 words
The system of claim 11, wherein handwritten messages may be written onto said flat panel display via a stylus and recognized by said computer.
Claim 15
Dependent Claim
16 words
The system of claim 11, wherein said flat panel display is hingedly attached to said enclosure.
Claim 16
Dependent Claim
17 words
The system of claim 11, wherein said ejectable keyboard is attached to the computer via a cable.
Claim 17
Dependent Claim
25 words
The system of claim 11, wherein said wherein said ejectable keyboard is completely detachable from said enclosure, using infrared signals to communicate with the computer.
Claim 18
Dependent Claim
60 words
The system of claim 10, wherein said latching device includes (i) a latching device housing which is fixedly attached to said enclosure; (ii) a plunger which is slidable within said latching device housing; and (iii) a locking pin which is slidable within said plunger to engage a corresponding recess in said ejectable keyboard to secure said keyboard to said enclosure.
Claim 19
Dependent Claim
30 words
The system of claim 16, wherein said plunger is biased against said latching device housing by a spring, and said locking pin is biased against said plunger by a spring.
Claim 20
Dependent Claim
77 words
A pen-based computer having an ejectable keyboard, comprising: an enclosure; a stylus; a flat panel display onto which handwritten information is written and recognized by the computer; an ejectable keyboard slidably contained within said enclosure; and a latching system for lockingly securing said ejectable keyboard to said enclosure, said latching system including a damping device for ejecting said ejectable keyboard from within said enclosure and a mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 21
Dependent Claim
77 words
A pen-based computer having an ejectable keyboard, comprising: an enclosure; a stylus; a flat panel display onto which handwritten information is written and recognized by the computer; an ejectable keyboard slidably contained within said enclosure; and a latching system for lockingly securing said ejectable keyboard to said enclosure, said latching system including a damping device for ejecting said ejectable keyboard from within said enclosure and a mechanical latching device for securing said ejectable keyboard within said enclosure.
Claim 22
Dependent Claim
33 words
The system of claim 18, wherein said damping device for ejecting said ejectable keyboard from said enclosure and said mechanical latching device for securing said ejectable keyboard within said enclosure are manually operated.
Claim 23
Dependent Claim
37 words
The system of claim 19, wherein said flat panel display is movable to a closed position on said enclosure to actuate said latching device to prevent said damping device from ejecting said ejectable keyboard from said enclosure.
Claim 24
Dependent Claim
17 words
The system of claim 20, wherein said ejectable keyboard is attached to the computer via a cable.
Claim 25
Dependent Claim
25 words
The system of claim 20, wherein said wherein said ejectable keyboard is completely detachable from said enclosure, using infrared signals to communicate with the computer.
Claim 26
Dependent Claim
16 words
The system of claim 19, wherein said flat panel display is hingedly attached to said enclosure.
Claim 27
Dependent Claim
60 words
The system of claim 19, wherein said latching device includes (i) a latching device housing which is fixedly attached to said enclosure; (ii) a plunger which is slidable within said latching device housing; and (iii) a locking pin which is slidable within said plunger to engage a corresponding recess in said ejectable keyboard to secure said keyboard to said enclosure.
Claim 28
Dependent Claim
30 words
The system of claim 24, wherein said plunger is biased against said latching device housed by a spring, and said locking pin is biased against said plunger by a spring.
References Cited (Backward Citations)
US4600255A
Cited
US4709972A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-02-14 | 1997-08-16 | 1998-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-02-14 | 2001-08-16 | 2002-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-02-14 | 2005-08-16 | 2006-02-15 | $7700.00 | Window Closed / Lapsed |