Patent US4153928A successfully refreshed from Google Patents.
Patent US5318367A successfully refreshed from Google Patents.
US5318367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pivotable keyboard arrangement
Assignee: Marquardt Switches Inc
•
Filing: 1992-08-26
•
Granted: 1994-06-07
•
Expires: 2012-08-26
Abstract
Abstract A keyboard arrangement and particularly an ergonomic keyboard arrangement is provided which includes, in particular, keyboard blocks (5, 6) that are arranged in the shape of a V for ergonomic operation. In order to be able to vary the V-shaped arrangement of the keyboard blocks (5, 6), one or a plurality of hinges (14, 15) are provided. Moreover, in order to accommodate the keyboard blocks (5, 6), the keyboard housings (2, 3) can be displaced laterally by means of long holes that are arranged in a transverse web in the upper region of the housing so as to vary the distance between the keyboard blocks (5, 6).
Inventors
- 👤 Franz Braun
- 👤 Heinz Hoffmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:05
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; H01H13/78; H01H13/807; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; B41J5/105; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0221; H01H13/84; H01H2221/00; H01H2221/032; H01H2223/00; H01H2223/046; H01H2223/05; H01H2225/00; H01H2225/022
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
182 words
A keyboard comprising: (a) first and second keyboard housings situated adjacent one another and having respective upper corners facing each other; (b) first and second keyboard blocks accommodated in said first and second keyboard housings, respectively; said first and second keyboard blocks being operable by different hands of an operator; (c) first and second hinge pins affixed to said first and second keyboard housings in the respective upper corner thereof; each said hinge pin having a pivot axis; and (d) a transverse web having first and second elongated holes; said first and second hinge pins extending into said first and second elongated holes, respectively, to provide for a sliding movement of said first and second hinge pins in and along said first and second elongated holes, respectively, for changes a distance of the keyboard housings from one another and to provide for an angular displacement of said first and second keyboard housings toward or away from one another about the pivot axis of said first and second hinge pins for changing an angular position of said keyboard housings relative to one another.
Claim 2
Dependent Claim
182 words
A keyboard comprising: (a) first and second keyboard housings situated adjacent one another and having respective upper corners facing each other; (b) first and second keyboard blocks accommodated in said first and second keyboard housings, respectively; said first and second keyboard blocks being operable by different hands of an operator; (c) first and second hinge pins affixed to said first and second keyboard housings in the respective upper corner thereof; each said hinge pin having a pivot axis; and (d) a transverse web having first and second elongated holes; said first and second hinge pins extending into said first and second elongated holes, respectively, to provide for a sliding movement of said first and second hinge pins in and along said first and second elongated holes, respectively, for changes a distance of the keyboard housings from one another and to provide for an angular displacement of said first and second keyboard housings toward or away from one another about the pivot axis of said first and second hinge pins for changing an angular position of said keyboard housings relative to one another.
Claim 3
Dependent Claim
60 words
The keyboard as defined in claim 1, wherein said first keyboard housing has a first side face and said second keyboard housing has a second side face; said first and second side faces being oriented towards one another; said first and second side faces extending parallel to one another if an angle of said angular position assumes a minimum value.
Claim 4
Dependent Claim
41 words
The keyboard as defined in claim 1, wherein said first and second keyboard blocks are inclined downwardly towards a normally positioned operator and further wherein said first and second keyboard blocks are inclined downwardly in a direction away from one another.
Claim 5
Dependent Claim
17 words
The keyboard as defined in claim 1, further wherein each said keyboard housing includes a wrist rest.
Claim 6
Dependent Claim
22 words
The keyboard as defined in claim 1, further wherein each said keyboard housing includes a longitudinal guide slidably receiving said transverse web.
Claim 7
Dependent Claim
53 words
The keyboard as defined in claim 1, wherein said first and second keyboard blocks each have parallel key rows; each key rows of said first keyboard block and said second key rows of said second keyboard block being parallel to one another if an angle of said angular position assumes a minimum value.
Claim 8
Dependent Claim
17 words
The keyboard as defined in claim 6, wherein said first and second keyboard blocks have alphanumeric keys.
Claim 9
Dependent Claim
45 words
The keyboard as defined in claim 1, further comprising a third keyboard housing accommodating a third keyboard block; said third keyboard housing being situated between said first and second keyboard housings and forming a one-piece component with said transverse web; said one-piece component being T-shaped.
Claim 10
Dependent Claim
78 words
The keyboard as defined in claim 8, wherein said first keyboard housing has a first side face; said second keyboard housing has a second side face and said third keyboard housing has opposite third and fourth side faces; said first side face being in a face-to-face engagement with said third side face and said second side face being in a face-to-face engagement with said fourth side face if an angle of said angular position assumes a minimum value.
Claim 11
Dependent Claim
30 words
The keyboard as defined in claim 1, wherein said first and second keyboard blocks are inclined to one another if an angle of said angular position assumes a minimum value.
Claim 12
Dependent Claim
17 words
The keyboard as defined in claim 10, wherein said first and second keyboard blocks have alphanumeric keys.
References Cited (Backward Citations)
DE577708C
Cited
DE1255117B
Cited
DE2218065A1
Cited
US3990565A
Cited
US3940758A
Cited
US4483634A
Cited
EP0055220A2
Cited
US4378553A
Cited
US4509873A
Cited
US4597681A
Cited
WO1985003035A1
Cited
US4661005A
Cited
GB2172852A
Cited
US4564751A
Cited
DE3629417A1
Cited
DE3707049A1
Cited
SU1518144A1
Cited
DE8714596U1
Cited
DE8716224U1
Cited
DE8801303U1
Cited
US5067834A
Cited
US5156475A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-06-06 | 1997-12-06 | 1998-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-06 | 2001-12-06 | 2002-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-06 | 2005-12-06 | 2006-06-07 | $7700.00 | Window Closed / Lapsed |