One-handed keyboard

• US 4,846,598 A
• Filed: 12/21/1987
• Issued: 07/11/1989
• Est. Priority Date: 12/21/1987
• Status: Expired due to Fees

• Current Assignee: Eric A. Livits
• Original Assignee: Eric A. Livits
• Inventors: Livits, Eric A.
• Primary Examiner(s): NOT, DEFINED
• Assistant Examiner(s): Lisehora, James
• Application Number:
  US07/135,609
• Time in Patent Office: 568 Days
• Field of Search: 400/472, 400/485, 400/486, 400/489, 400/255, 400/261, 400/100, 400/492
• US Class Current: 400/472
• CPC Class Codes: B41J 5/28 Multiple-action keys, e.g. keys depressed by two or more amounts or movable in two or more directions to effect different functions or selections
• CPC Class Codes: G06F 3/0235 using chord techniques G06F3/0234 takes precedence

Abstract

A one-handed keyboard is disclosed which includes a stationary base and a rocking keyboard which is mounted for rocking movement between a normal level position and right and left depressed positions. A selector key is mounted on the rocking keyboard for rocking therewith and also being pivotally mounted for movement between a normal upper or raised position and a lower postion to which it moves when the user rests the palm of his hand on it. A cluster of keys is provided, each of which is multi-function representing a plurality of alpha-numeric characters and/or symbols that can be typed or entered by selective actuation of the character keys, rocking keyboard, selector key and a shift key by movements of one hand and movements of the fingers thereof.

Claims

1. A one-handed keyboard having a stationary base defining a longitudinal axis generally parallel to the direction of the hand and fingers of the user during use and a transverse axis generally orthogonal to said longitudinal axis;

a rocking keyboard pivotally mounted on said base for rocking movement about said longitudinal axis between a normal generally level position and right and left tilted positions, said rocking keyboard having a generally horizontal surface;

a cluster of generally vertically actuatable character keys spaced across said surface on said rocking keyboard actuatable by the tips of the index, middle and ring fingers of the user, each of said keys of said cluster of keys being multi-function keys representing a plurality of alpha-numeric characters and/or symbols that can be typed or entered by selective rocking movement of said rocking keyboard by movements of one hand and selective actuation of said character keys by movements of the fingers.

2. A one-handed keyboard as defined in claim 1, wherein said rocking keyboard and select key are spaced a predetermined distance from each other to permit the user to comfortably touch all said character keys with the finger tips while the palm essentially rests on said selector key, further comprising means for adjusting said distance to accommodate the size of the user'"'"'s hand.

3. A one-handed keyboard as defined in claim 1, wherein the keyboard is to be used with a computer, and further comprising a second cluster of function keys on said stationary base.

4. A one-handed keyboard as defined in claim 3, further comprising a control key.

5. A one-handed keyboard as defined in claim 1, wherein character keys comprise twelve keys arranged in four rows and three columns.

6. A one-handed keyboard as defined in claim 5, wherein each character key represents eight alpha-numeric characters and/or symbols.

7. A one-handed keyboard as defined in claim 5, wherein the keyboard is arranged to provide a calculator keyboard in the normal relaxed position to said shift key and the normal upper position of said selector key.

8. A one-handed keyboard as defined in claim 1, wherein said selector key is mounted on said rocking keyboard for sharing the rocking movements thereof.

9. A one-handed keyboard as defined in claim 1, further comprising a selector key pivotally mounted for generally vertical movements about said transverse axis between a normal upper position and a lower position in response to release and depression, respectively, of said selector key by the palm of the user'"'"'s hand, whereby additional alpha-numeric characters and/or symbols can be typed by selective actuation of said selector key.

10. A one-handed keyboard as defined in claim 1, further comprising a shift key on said rocking keyboard arranged to be actuated by the thumb for movements between a normal relaxed position and an actuated engaged position, whereby additional alpha-numeric characters and/or symbols can be typed by selective actuation of said shift key.

11. A one-handed keyboard as defined in claim 9, further comprising a shift key on said rocking keyboard arranged to be actuated by the thumb for movements between a normal relaxed position and an actuated engaged position, whereby additional alpha-numeric characters and/or symbols can be typed by selective actuation of said shift key.