US5575576A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Keyboard
Assignee: Individual
•
Filing: 1993-12-13
•
Granted: 1996-11-19
•
Expires: 2013-12-13
Abstract
Abstract A keyboard for the input of alphanumeric data. The keyboard consists of two or more sections which can be compacted for transport by placing portions of at least one section inside another section; the keyboard can be expanded for use to permit the keyboard to take on a size and spacing corresponding to that found in a keyboard for a conventional full sized typewriter or personal computer.
Inventors
- 👤 Brunn W. Roysden, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 17:47
CPC Classifications
H; H01; H01H; H01H13/00; H01H13/70; B; B41; B41J; B41J5/00; B41J5/08; B41J5/10; G; G06; G06F; G06F3/00; G06F3/01; G06F3/02; G06F3/0202; G06F3/0221; H01H2223/00; H01H2223/046; H01H2223/05; H01H2223/052
Claims Analysis
Total Claims: 22
Claim 1
Independent Claim
256 words
A keyboard, for inputting data, including at least two keyboard sections, a first section and a second section, each such section including a. a keyboard section structure, and b. a plurality of keys, including at least one BOUNDING KEY SET, each such BOUNDING KEY SET consisting of two rows of two keys each, each key within said plurality of keys including i. a key cap which is used to activate said key, and ii. switch means associated with said key, c. a SECTION KEY SPACE, consisting of the space contained between two bound planes, the upper key cap plane of said section and the lower key plane of said section, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, and d. a SECTION CAPLESS KEY SPACE, consisting of the space contained between two bound planes, the lower key cap plane of said section and the lower key plane of said section, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, and in which said keyboard sections can be arranged in at least two positions, one a keyboard-operative position in which said sections can be arranged such that the keys of said sections can be used to input data, and the other a keyboard-storage position, in which the claimed improvement includes means, for each key within said BOUNDING KEY SET of said first section, for placing the key cap of said key within said SECTION KEY SPACE of said second section.
Claim 2
Dependent Claim
39 words
A keyboard of the type of claim 1, including means, for each key within said BOUNDING KEY SET of said second section, for placing the key cap of said key within said SECTION KEY SPACE of said first section.
Claim 3
Dependent Claim
39 words
A keyboard of the type of claim 1, including means, for a majority of said plurality of keys of said first section, for placing the key caps of said keys within said SECTION KEY SPACE of said second section.
Claim 4
Dependent Claim
39 words
A keyboard of the type of claim 3, including means, for a majority of said plurality of keys of said second section, for placing the key caps of said keys within said SECTION KEY SPACE of said first section.
Claim 5
Dependent Claim
40 words
A keyboard of the type of claim 1, including means, for each key within said BOUNDING KEY SET of said first section, for placing the key cap of said key within said SECTION CAPLESS KEY SPACE of said second section.
Claim 6
Dependent Claim
40 words
A keyboard of the type of claim 5, including means, for each key within said BOUNDING KEY SET of said second section, for placing the key cap of said key within said SECTION CAPLESS KEY SPACE of said first section.
Claim 7
Dependent Claim
37 words
A keyboard of the type of claim 5, including means for placing the key caps of a majority of said plurality of keys of said first section within said SECTION CAPLESS KEY SPACE of said second section.
Claim 8
Dependent Claim
38 words
A keyboard of the type of claim 7, including means for placing the key caps of a majority of said keys plurality of keys of said second section within said SECTION CAPLESS KEY SPACE of said first section.
Claim 9
Dependent Claim
315 words
A keyboard, for imputting data, including at least two keyboard sections, each such section including a. a keyboard section structure, and b. a plurality of keys, including at least one BOUNDING KEY SET, each such BOUNDING KEY SET consisting of two rows of two keys each, each key within said plurality of keys including i. a key cap which is used to activate said key, and ii. switch means associated with said key, c. at least one BOUNDING KEY SET SPACE, each such BOUNDING KEY SET SPACE defined by a BOUNDING KEY SET of said section, said BOUNDING KEY SET SPACE consisting of the space contained between two bound planes, the bounding key set upper key cap plane of said BOUNDING KEY SET and the bounding key set lower key plane of said BOUNDING KEY SET, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, and d. at least one BOUNDING KEY SET CAPLESS SPACE, each such BOUNDING KEY SET CAPLESS SPACE defined by a BOUNDING KEY SET, said BOUNDING KEY SET CAPLESS SPACE consisting of the space contained between two bound planes, the bounding key set lower key cap plane of said BOUNDING KEY SET and the bounding key set lower key plane of said BOUNDING KEY SET, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, and in which said keyboard sections can be arranged in at least two positions, one a keyboard-operative position in which said sections can be arranged such that the keys of said sections can be used to input data, and the other a keyboard-storage position, in which the claimed improvement includes means, for each key within said BOUNDING KEY SET of said first section, for placing the key cap of said key within a BOUNDING KEY SET SPACE of said second section.
Claim 10
Dependent Claim
40 words
A keyboard of the type of claim 9, including means, for each key within said BOUNDING KEY SET of said second section, for placing the key cap of said key within a BOUNDING KEY SET SPACE of said first section.
Claim 11
Dependent Claim
41 words
A keyboard of the type of claim 9, including means, for a majority of said plurality of keys of said first section, for placing the key cap of each such key within a BOUNDING KEY SET SPACE of said second section.
Claim 12
Dependent Claim
41 words
A keyboard of the type of claim 11, including means, for a majority of said plurality of keys of said second section, for placing the key cap of each such key within a BOUNDING KEY SET SPACE of said first section.
Claim 13
Dependent Claim
41 words
A keyboard of the type of claim 9, including means, for each key within said BOUNDING KEY SET of said first section, for placing the key cap of said key within a BOUNDING KEY SET CAPLESS SPACE of said second section.
Claim 14
Dependent Claim
41 words
A keyboard of the type of claim 13, including means, for each key within said BOUNDING KEY SET of said second section, for placing the key cap of said key within a BOUNDING KEY SET CAPLESS SPACE of said first section.
Claim 15
Dependent Claim
42 words
A keyboard of the type of claim 13, including means, for a majority of said plurality of keys of said first section, for placing the key cap of each such key within a BOUNDING KEY SET CAPLESS SPACE of said second section.
Claim 16
Dependent Claim
42 words
A keyboard of the type of claim 15, including means, for a majority of said plurality of keys of said second section, for placing the key cap of each such key within a BOUNDING KEY SET CAPLESS SPACE of said first section.
Claim 17
Dependent Claim
243 words
A keyboard, for imputting data, including at least two keyboard sections, a first section and a second section, each such section including a. a keyboard section structure, and b. a plurality of keys, including at least one BOUNDING KEY SET, each such BOUNDING KEY SET consisting of two rows of two keys each, each key within said plurality of keys including i. a key cap which is used to activate said key, and ii. switch means associated with said key, c. at least one BOUNDING KEY SET SPACE, each such BOUNDING KEY SET SPACE defined by a BOUNDING KEY SET of said section, said BOUNDING KEY SET SPACE consisting of the space contained between two bound planes, the bounding key set upper key cap plane of said BOUNDING KEY SET and the bounding key set lower key plane of said BOUNDING KEY SET, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, in which said keyboard sections can be arranged in at least two positions, one a keyboard-operative position in which the sections can be arranged such that the keys of said sections can be used to input data, and the other a keyboard-storage position, in which the claimed improvement includes means, for each key within said BOUNDING KEY SET of said first section, for placing a majority of the volume of each such key within a BOUNDING KEY SET SPACE of said second section.
Claim 18
Dependent Claim
43 words
A keyboard of the type of claim 17, including means, for each key within said BOUNDING KEY SET of said second section, for placing a majority of the volume of each such key within a BOUNDING KEY SET SPACE of said first section.
Claim 19
Dependent Claim
43 words
A keyboard of the type of claim 17, including means, for a majority of said plurality of keys of said first section, for placing a majority of the volume of each such key within a BOUNDING KEY SET SPACE of said second section.
Claim 20
Dependent Claim
43 words
A keyboard of the type of claim 19, including means for a majority of said plurality of keys of said second section, for placing a majority of the volume of each such key within a BOUNDING KEY SET SPACE of said first section.
Claim 21
Dependent Claim
161 words
A keyboard arrangement including a first array of keys operative selectively on a first electronic circuit, said keyboard arrangement being physically detachable into a plurality of keyboard portions each such keyboard portion bearing a section of said array of keys and each of said keyboard portions bearing a section of said electronic circuit, each of said keyboard portions being adapted to electronically interconnect with adjacent keyboard portions for selective operations on said first electronic circuit, in which the claimed improvement includes means for placing at least 50% of the space encompassed by the SECTION KEY SPACE of one detachable portion of said keyboard, said SECTION KEY SPACE consisting of the space contained between two bound planes, the upper key cap plane of said section and the lower key plane of said section, with a lateral side consisting of the pseudocylindrical surface defined by the boundaries of said two planes, within the SECTION KEY SPACE of another detachable portion of said keyboard.
Claim 22
Dependent Claim
18 words
A computer in which the claimed improvement includes a keyboard as in any one of the preceding claims.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1999-11-19 | 2000-05-20 | 2000-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-11-19 | 2004-05-20 | 2004-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-11-19 | 2008-05-20 | 2008-11-19 | $7700.00 | Window Closed / Lapsed |