US5424728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: GOLDSTEIN ELIZABETH CECILIA (JOINT OWNERS)
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Filing: 1993-01-05
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Granted: 1995-06-13
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Expires: 2013-01-05
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
2026-10-29 18:37
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: 13
Claim 1
Independent Claim
117 words
A keyboard for placement on a desk for support for use in conjunction with a computer and having a set of keys, the keyboard comprising first and second segments, each having a sub-set of the set of keys mounted thereon, said segments being coupled one to the other by a joint which permits angular adjustment of one segment with respect to three mutually perpendicular axes associated with the other segment, wherein when the keyboard is adjusted such that a center region of the keyboard is raised to a raised position with respect to said desk, the keyboard is maintained fixed in said raised position with respect to said joint by the desk in cooperation with the joint.
Claim 2
Dependent Claim
117 words
A keyboard for placement on a desk for support for use in conjunction with a computer and having a set of keys, the keyboard comprising first and second segments, each having a sub-set of the set of keys mounted thereon, said segments being coupled one to the other by a joint which permits angular adjustment of one segment with respect to three mutually perpendicular axes associated with the other segment, wherein when the keyboard is adjusted such that a center region of the keyboard is raised to a raised position with respect to said desk, the keyboard is maintained fixed in said raised position with respect to said joint by the desk in cooperation with the joint.
Claim 3
Dependent Claim
15 words
A keyboard according to claim 1 wherein the joint is a ball and socket joint.
Claim 4
Dependent Claim
30 words
A keyboard according to claim 2 wherein the segments are coupled one with the other by means which allow the segments to be uncoupled and separated one from the other.
Claim 5
Dependent Claim
46 words
A keyboard according to claim 3 wherein the keyboard segments have a configuration in which an edge of one is adapted for swing movement with respect to an adjacent edge of the other about an axis through the joint and wherein said adjacent edges are non-linear.
Claim 6
Dependent Claim
26 words
A keyboard according to claim 4 wherein said edge of one comprises formations which are interengagable with corresponding formations of the adjacent edge of said other.
Claim 7
Dependent Claim
17 words
A keyboard according to claim 1 further comprising a third segment hingedly connected to the second segment.
Claim 8
Dependent Claim
19 words
A keyboard according to claim 6 wherein the third segment is hingedly connected by means of a universal joint.
Claim 9
Dependent Claim
26 words
A keyboard according to claim 7 wherein the joint hingedly connecting the first segment to the second segment is adjacent a corner of the second segment.
Claim 10
Dependent Claim
15 words
A keyboard according to claim 8 wherein the third segment comprises a numeric key pad.
Claim 11
Dependent Claim
135 words
An ergonomic keyboard for use with a computer, comprising: a first segment of a rectangular shape including alphabetic keys located thereon; a second segment of a rectangular shape including alphabetic keys located thereon; a first hinge allowing movement in three planes inter-coupling the first segment with the second segment, the first hinge attached to a top right corner of the first segment and a top left corner of the second segment and adapted to allow pivoting of the first segment and the second segment in both horizontal and vertical directions; and a third segment including numeric keys located thereon, the third segment coupled to the second segment by a second hinge allowing movement in three planes and enabling the third segment to be positioned in a plane other than the plane of the second segment.
Claim 12
Dependent Claim
135 words
An ergonomic keyboard for use with a computer, comprising: a first segment of a rectangular shape including alphabetic keys located thereon; a second segment of a rectangular shape including alphabetic keys located thereon; a first hinge allowing movement in three planes inter-coupling the first segment with the second segment, the first hinge attached to a top right corner of the first segment and a top left corner of the second segment and adapted to allow pivoting of the first segment and the second segment in both horizontal and vertical directions; and a third segment including numeric keys located thereon, the third segment coupled to the second segment by a second hinge allowing movement in three planes and enabling the third segment to be positioned in a plane other than the plane of the second segment.
Claim 13
Dependent Claim
23 words
The ergonomic keyboard of claim 10 wherein the first segment and the second segment are positionable to reduce pronation of a user's wrists.
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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) | 1998-06-12 | 1998-12-12 | 1999-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-06-12 | 2002-12-12 | 2003-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-06-12 | 2006-12-12 | 2007-06-13 | $7700.00 | Window Closed / Lapsed |