Patent US5464292A successfully refreshed from Google Patents.
US5464292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard alignment device
Assignee: Individual
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Filing: 1993-04-02
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Granted: 1995-11-07
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Expires: 2013-04-02
Abstract
Abstract An adjustable one-piece platform is constructed or molded with a plastic living hinge at a front edge to which is integrally attached an elevating projection. The front edge elevating projection can be rotated about the living hinge into one of several positions. This permits the bottom surface of the keyboard alignment device of the present invention to remain in a horizontal plane on a desktop or a computer work surface platform. Further, the keyboard alignment device is able to have the angle of inclination of the bottom surface changed with respect to a horizontal work surface. A traditional flat/rectangular keyboard is placed on an upper rear surface of the keyboard alignment device. The traditional keyboard maintains its front to rear taper when an elevating projection of the keyboard alignment device is at right angles to the desktop or work surface. When the elevating projection is folded underneath the bottom surface of the keyboard alignment device, then the front to rear taper of the keyboard is negated.
Inventors
- 👤 Alan H. Grant
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:21
CPC Classifications
G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; H; H01; H01H; H01H2217/00; H01H2217/028; H01H2217/034
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
78 words
A keyboard alignment device comprising: a base having a bottom surface, an upper front surface and an upper rear surface for supporting a keyboard on said upper rear surface, two spaced ramps located on said upper front surface, a central recess formed between said two spaced ramps, an elevating projection pivotally mounted on said base, said elevating projection including two portions pivotally mounted to each other, and a hinge for pivotally mounting said elevating projection on said base.
Claim 2
Dependent Claim
78 words
A keyboard alignment device comprising: a base having a bottom surface, an upper front surface and an upper rear surface for supporting a keyboard on said upper rear surface, two spaced ramps located on said upper front surface, a central recess formed between said two spaced ramps, an elevating projection pivotally mounted on said base, said elevating projection including two portions pivotally mounted to each other, and a hinge for pivotally mounting said elevating projection on said base.
Claim 3
Dependent Claim
23 words
A keyboard alignment device as claimed in claim 1, wherein said elevating projection is pivotally mounted on a front edge of said base.
Claim 4
Dependent Claim
23 words
A keyboard alignment device as claimed in claim 1, wherein said elevating projection is pivotally mounted on a rear edge of said base.
Claim 5
Dependent Claim
21 words
A keyboard alignment device as claimed in claim 1, wherein said upper rear surface and said bottom surface are substantially parallel.
Claim 6
Dependent Claim
105 words
A keyboard alignment device comprising: a base having a bottom surface, an upper front surface and an upper rear surface for supporting a keyboard on said upper rear surface, two spaced lateral ramps located on said upper front surface forming a central recess therebetween for positioning of a space bar of the keyboard adjacent to said central recess and for positioning the hands of an operator on said two spaced lateral ramps so as to orient the hands of the operator in a prehensile position, and an elevating projection pivotally mounted on said base, said elevating projection including two portions pivotally mounted to each other.
Claim 7
Dependent Claim
105 words
A keyboard alignment device comprising: a base having a bottom surface, an upper front surface and an upper rear surface for supporting a keyboard on said upper rear surface, two spaced lateral ramps located on said upper front surface forming a central recess therebetween for positioning of a space bar of the keyboard adjacent to said central recess and for positioning the hands of an operator on said two spaced lateral ramps so as to orient the hands of the operator in a prehensile position, and an elevating projection pivotally mounted on said base, said elevating projection including two portions pivotally mounted to each other.
Claim 8
Dependent Claim
23 words
A keyboard alignment device as claimed in claim 5, wherein said elevating projection is pivotally mounted on a front edge of said base.
Claim 9
Dependent Claim
23 words
A keyboard alignment device as claimed in claim 5, wherein said elevating projection is pivotally mounted on a rear edge of said base.
Claim 10
Dependent Claim
21 words
A keyboard alignment device as claimed in claim 5, wherein said upper front surface tapers upwardly to said upper rear surface.
Claim 11
Dependent Claim
21 words
A keyboard alignment device as claimed in claim 8, wherein said upper rear surface and said bottom surface are substantially parallel.
Claim 12
Dependent Claim
28 words
A keyboard alignment device as claimed in claim 5, wherein each of said two lateral ramps includes an upwardly tapering surface portion and a downwardly tapering surface portion.
Claim 13
Dependent Claim
19 words
A keyboard alignment device as claimed in claim 10, wherein said downwardly tapering surface extends towards said central recess.
Claim 14
Dependent Claim
26 words
A keyboard alignment device as claimed in claim 5, wherein a substantially vertical surface of said two lateral ramps abuts a leading edge of the keyboard.
Claim 15
Dependent Claim
19 words
A keyboard alignment device as claimed in claim 5, wherein said elevating projection is foldable under said bottom surface.
References Cited (Backward Citations)
US4545554A
Cited
US4635893A
Cited
US5163646A
Cited
US5183230A
Cited
USD346816S
Cited
US5326056A
Cited
USD347216S
Cited
US5244296A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1998-11-06 | 1999-05-08 | 1999-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2002-11-06 | 2003-05-08 | 2003-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2006-11-06 | 2007-05-08 | 2007-11-07 | $7700.00 | Window Closed / Lapsed |