US5543790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: GOLDSTEIN ELIZABETH CECILIA (JOINT OWNERS)
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Filing: 1995-05-03
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Granted: 1996-08-06
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Expires: 2015-05-03
Abstract
Abstract The invention relates to a keyboard (1) to be used, for example, at a computer terminal. The preferred embodiment comprises a keyboard (1) having mounted thereon a number of keys (5), the keyboard being formed in at least two segments (2,3) which are mutually detachable and/or pivotable and wherein each of the segments (2,3) of the keyboard (1) has mounted thereon some of the keys (5). The pivoting/detachable nature of the keyboard aims at reducing stress and discomfort to the user by eliminating contortion to the operators wrists. More particularly, discomfort to the user caused by pronation of the wrists and/or supination of the wrists is reduced.
Inventors
- 👤 Mark Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:06
CPC Classifications
B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; B41J5/105; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0216; H; H01; H01H; H01H13/00; H01H13/70; H01H13/84; H01H2223/00; H01H2223/046; H01H2223/05
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
116 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; and a ball-and-socket joint inter-coupling the first keyboard segment with the second keyboard segment, the ball-and-socket joint attached to a top right corner of the first keyboard segment and a top left corner of the second keyboard segment and adapted to allow pivoting of the first keyboard segment and the second keyboard segment in both horizontal and vertical direction; wherein, when the keyboard segments are adjusted to a non-coplanar configuration, the keyboard is maintained fixed in said non-coplanar configuration by the horizontal surface in cooperation with the ball-and-socket joint.
Claim 2
Dependent Claim
116 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; and a ball-and-socket joint inter-coupling the first keyboard segment with the second keyboard segment, the ball-and-socket joint attached to a top right corner of the first keyboard segment and a top left corner of the second keyboard segment and adapted to allow pivoting of the first keyboard segment and the second keyboard segment in both horizontal and vertical direction; wherein, when the keyboard segments are adjusted to a non-coplanar configuration, the keyboard is maintained fixed in said non-coplanar configuration by the horizontal surface in cooperation with the ball-and-socket joint.
Claim 3
Dependent Claim
24 words
The keyboard of claim 1 further comprising a third segment coupled to the second keyboard segment, the third segment including numeric keys located thereon.
Claim 4
Dependent Claim
38 words
The keyboard of claim 2 wherein the third segment is coupled to the second keyboard segment by a second joint allowing the third segment to be positioned in a plane other than the plane of the second segment.
Claim 5
Dependent Claim
13 words
The keyboard of claim 3 wherein the second joint is a ball-and-socket joint.
Claim 6
Dependent Claim
12 words
The keyboard of claim 3 wherein the second joint is a hinge.
Claim 7
Dependent Claim
138 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; and hinging means inter-coupling the first keyboard segment with the second keyboard segment, the hinging means attached to a right corner of the first keyboard segment and a left corner of the second keyboard segment and adapted to permit angular adjustment of one keyboard segment with respect to three mutually perpendicular axes associated with the other keyboard segment, wherein when the keyboard is adjusted such that a center region of the keyboard is raised to a raised position with respect to the horizontal surface, the keyboard is maintained fixed in said raised position with respect to the horizontal surface without an external frame providing support for maintaining said fixed raised position.
Claim 8
Dependent Claim
138 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; and hinging means inter-coupling the first keyboard segment with the second keyboard segment, the hinging means attached to a right corner of the first keyboard segment and a left corner of the second keyboard segment and adapted to permit angular adjustment of one keyboard segment with respect to three mutually perpendicular axes associated with the other keyboard segment, wherein when the keyboard is adjusted such that a center region of the keyboard is raised to a raised position with respect to the horizontal surface, the keyboard is maintained fixed in said raised position with respect to the horizontal surface without an external frame providing support for maintaining said fixed raised position.
Claim 9
Dependent Claim
13 words
The keyboard of claim 6 wherein the hinging means is a ball-and-socket joint.
Claim 10
Dependent Claim
24 words
The keyboard of claim 6 further comprising a third segment coupled to the second keyboard segment, the third segment including numeric keys located thereon.
Claim 11
Dependent Claim
24 words
The keyboard of claim 6 wherein the first keyboard segment and the second keyboard segment are positionable to reduce pronation of a user's wrists.
Claim 12
Dependent Claim
37 words
The keyboard of claim 8 wherein the third segment is coupled to the second keyboard segment by a joint allowing the third segment to be positioned in a plane other than the plane of the second segment.
Claim 13
Dependent Claim
12 words
The keyboard of claim 10 wherein the joint is a ball-and-socket joint.
Claim 14
Dependent Claim
11 words
The keyboard of claim 10 wherein the joint is a hinge.
Claim 15
Dependent Claim
130 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; a joint inter-coupling the first keyboard segment with the second keyboard segment, the joint attached to a top right corner of the first keyboard segment and a top left corner of the second keyboard segment and adapted to allow pivoting of the first keyboard segment and the second keyboard segment in both horizontal and vertical direction; and a third segment coupled to the second keyboard segment, the third segment including numeric keys located thereon; wherein when the keyboard segments are adjusted to a non-coplanar configuration, the keyboard is maintained fixed in said non-coplanar configuration by the horizontal surface in cooperation with the joint.
Claim 16
Dependent Claim
130 words
A keyboard for use on a horizontal surface, comprising: a first keyboard segment including alphabetic keys located thereon; a second keyboard segment including alphabetic keys located thereon; a joint inter-coupling the first keyboard segment with the second keyboard segment, the joint attached to a top right corner of the first keyboard segment and a top left corner of the second keyboard segment and adapted to allow pivoting of the first keyboard segment and the second keyboard segment in both horizontal and vertical direction; and a third segment coupled to the second keyboard segment, the third segment including numeric keys located thereon; wherein when the keyboard segments are adjusted to a non-coplanar configuration, the keyboard is maintained fixed in said non-coplanar configuration by the horizontal surface in cooperation with the joint.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-08-06 | 2000-02-05 | 2000-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-08-06 | 2004-02-05 | 2004-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-08-06 | 2008-02-05 | 2008-08-06 | $7700.00 | Window Closed / Lapsed |