US5145270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reverse slope keyboard
Assignee: Individual
•
Filing: 1991-07-22
•
Granted: 1992-09-08
•
Expires: 2011-07-22
Abstract
Abstract An improved keyboard for office machines and the like having a reversely-sloped keyboard having a wrist support member located on the raised adjacent edge of the keyboard and having the keys arranged in tiers descending in stepwise fashion toward the lower rear edge of the keyboard.
Inventors
- 👤 Jody J. Darden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:28
CPC Classifications
A; A47; A47B; A47B21/00; A47B21/03; A47B21/0371; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0216; G06F3/0221; A47B2021/0307; H; H01; H01H; H01H2217/00; H01H2217/034
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
65 words
A keyboard comprising: a member having a raised forward edge, a lower rear edge, and an upper surface having a plurality of keys arranged in tiers descending in stepwise fashion toward said lower rear edge of said member, a base hingedly attached to said rear edge of said member, and resilient means interposed between said base and said member to normally urge said member upward.
Claim 2
Dependent Claim
65 words
A keyboard comprising: a member having a raised forward edge, a lower rear edge, and an upper surface having a plurality of keys arranged in tiers descending in stepwise fashion toward said lower rear edge of said member, a base hingedly attached to said rear edge of said member, and resilient means interposed between said base and said member to normally urge said member upward.
Claim 3
Dependent Claim
12 words
The keyboard of claim 1 wherein: said resilient means is a spring.
Claim 4
Dependent Claim
16 words
The keyboard of claim 1 further comprising: means for adjusting the tension of said resilient means.
Claim 5
Dependent Claim
19 words
The keyboard of claim 1 further comprising: a wrist support provided on said raised forward edge of said member.
Claim 6
Dependent Claim
12 words
The keyboard of claim 4 wherein: said wrist support portion is cushioned.
Claim 7
Dependent Claim
12 words
The keyboard of claim 1 wherein: said keys have convex upper surfaces.
Claim 8
Dependent Claim
19 words
The keyboard of claim 1 further comprising: means for adjusting the height of said forward edge of said member.
Claim 9
Dependent Claim
20 words
The keyboard of claim 1 further comprising: means attachable to said keys to provide convex upper surfaces for said keys.
Claim 10
Dependent Claim
81 words
A keyboard base comprising: a member having a raised forward edge, a lower rear edge, and an upper surface sloping downwardly from said forward edge toward said lower rear edge of said member, said upper surface of said member serving to support a forwardly-sloping keyboard placed on top of said upper surface in a rearwardly sloping position, said upper surface having an end block located at said lower rear edge for releasably retaining said forwardly-sloping keyboard on said upper sloping surface.
Claim 11
Dependent Claim
81 words
A keyboard base comprising: a member having a raised forward edge, a lower rear edge, and an upper surface sloping downwardly from said forward edge toward said lower rear edge of said member, said upper surface of said member serving to support a forwardly-sloping keyboard placed on top of said upper surface in a rearwardly sloping position, said upper surface having an end block located at said lower rear edge for releasably retaining said forwardly-sloping keyboard on said upper sloping surface.
Claim 12
Dependent Claim
19 words
The keyboard of claim 9 further comprising: means for adjusting the slope of said upper surface of said member.
Claim 13
Dependent Claim
21 words
The keyboard of claim 9 wherein: said member is a stand for supporting a forwardly-sloping keyboard in a reversely sloped position.
Claim 14
Dependent Claim
16 words
The device of claim 11 wherein: said member is a solid wedge formed of resilient material.
Claim 15
Dependent Claim
12 words
The device of claim 12 wherein: said member is formed of polyurethane.
References Cited (Backward Citations)
US674747A
Cited
DE408898C
Cited
US3387693A
Cited
SU885074A1
Cited
US4545554A
Cited
US4619427A
Cited
US5040757A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-09-08 | 1996-03-09 | 1996-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-08 | 2000-03-09 | 2000-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-08 | 2004-03-09 | 2004-09-08 | $7700.00 | Window Closed / Lapsed |