Miniature keyboard

• US 5,388,922 A
• Filed: 07/23/1993
• Issued: 02/14/1995
• Est. Priority Date: 07/23/1993
• Status: Expired due to Fees

• Current Assignee: Smith Corona Corporation (Pubco Corporation)
• Original Assignee: Smith Corona Corporation (Pubco Corporation)
• Inventors: Smiley, Gregory W.
• Primary Examiner(s): Eickholt, Eugene H.
• Application Number:
  US08/095,470
• Time in Patent Office: 571 Days
• Field of Search: 400/472, 400/477, 400/479, 400/479.1, 400/479.2, 400/480, 400/481, 400/485, 400/491, 400/495, 200/5 R, 200/5 A, 200/237, 200/245, 200/252, 200/257, 200/275, 200/292, 200/341, 200/345, 340/711, 340/712, 341/22, 341/23, 341/26, 341/27, 341/32, 341/33, 341/34
• US Class Current: 400/492
• CPC Class Codes: B41J 5/10 Arrangements of keyboards , e.g. key button disposition
• CPC Class Codes: G06F 3/0219 Special purpose keyboards
• CPC Class Codes: G06F 3/0236 using selection techniques to select from displayed items
• CPC Class Codes: G06F 3/0238 Programmable keyboards key guide holders G06F3/0224
• CPC Class Codes: H01H 2025/004 the operating member being depressable perpendicular to the other directions
• CPC Class Codes: H01H 25/002 having an operating member rectilinearly slidable in different directions

Abstract

A miniature keyboard assembly for generating code signals representative of selected characters and functions. The assembly including at least one but preferably, two glide keys, each coupled to a depressible keybutton for controlling the movement of its respective keybutton. In one embodiment, each keybutton base carries an electrically conductive layer and is slidable on a membrane panel having thereon a plurality of signal code generating switches. The keybutton being movable along orthogonal axes in response to movement of the glide key. Each keybutton extends upwardly through a longitudinal slot opening in a lateral slide support member and then through a fitted opening in an indicator panel. The indicator panel also includes an indicia marker which underlies a transparent keyboard panel and is visible therethrough. Finger movement of the glide key causes the marker to indicate the character or function on the keyboard representative of the signal code to be generated by the switch over which the keybutton is positioned. Depression of the keybutton results in the activation of the switch and the generation of the selected signal code.

Claims

1. An electronic keyboard assembly for generating character and function codes indicative of the selected characters and functions, said assembly comprising a membrane panel having thereon a code generating means corresponding to characters and functions, at least one depressible keybutton overlaying said membrane panel and supported for movement in both a horizontal and vertical direction, said keybutton including means for activating a selected one of said code generating means upon depression of said keybutton.

2. The keyboard assembly according to claim 1 wherein said code generating means includes a plurality of switches and said means for activation includes an electrically conductive layer carried by said keybutton opposite said membrane panel for closing one of said switches.

3. The keyboard assembly according to claim 1 further including a keyboard panel having thereon representations of said characters and functions.

4. The keyboard assembly according to claim 3 further including indicating means for indicating the character and function on said keyboard panel which corresponds to the character and function signal code that would be generated upon depression of said keybutton.

5. The keyboard assembly according to claim 4 wherein said indicating means is coupled to said keybutton for movement therewith.

6. The keyboard assembly according to claim 5 wherein said indicating means is an indicator panel formed with a fitted opening through which said keybutton extends.

7. The keyboard assembly according to claim 6 wherein said indicator panel is formed of a transparent material and includes an indicia marker thereon for indicating the character or function to be generated.

8. The keyboard assembly according to claim 1 further including a glide key and means for supporting said keybutton on said glide key for movement therewith.

9. The keyboard assembly according to claim 8 wherein said means for supporting said keybutton includes a central opening formed in said glide key through which said keybutton extends.

10. The keyboard assembly according to claim 9 wherein said glide key includes an upper recessed surface.

11. The keyboard assembly according to claim 6 wherein said assembly includes two of said indicator panels and two depressible keybuttons.

12. An electronic device for storing characters in memory comprising a membrane panel having a plurality of switches, such switches being associated with characters to be stored and a keybutton movable in a horizontal direction and vertical direction in relation to said membrane panel and having means thereon to selectively actuate one of said switches on said membrane panel to store the character associated with the activated switch in memory.

13. An electronic device for storing characters in memory according to claim 12 including a keyboard panel having characters thereon corresponding to the characters to be stored in memory.

14. An electronic device for storing characters in memory according to claim 13 including indicating means for indicating the character on the keyboard panel which corresponds to the character which would be stored upon actuation of the keybutton in its present position.

15. An electronic device for storing characters in memory according to claim 14 wherein the indicating means has an opening therein through which the movable keybutton extends for moving the indicating means to indicate the character on the keyboard panel corresponding to the character which would be stored upon actuation of the keybutton in its present position.

16. An electronic device for storing characters in memory according to claim 14 including means having a horizontal opening therein for guiding the keybutton in a horizontal direction and the keybutton extending through the horizontal opening.

17. A compact portable electronic device for storing characters in memory according to claim 14 wherein said indicating means is above said keyboard panel.

18. A compact portable electronic device for storing characters in memory according to claim 14 wherein said indicating means is below said keyboard panel.

19. An electronic device for storing characters in memory according to claim 15 wherein the indicating means is formed of transparent material and has a portion thereon of a different color which overlays the character on the keyboard panel corresponding to the character which would be stored upon actuation of the keybutton in its present position.

20. An electronic device for storing characters in memory according to claim 12 wherein the keybutton has an electrically conductive layer on the bottom thereof for selectively actuating one of said switches.

21. An electronic device for storing characters in memory according to claim 12 including a glide key for moving the keybutton in a horizontal and vertical direction.

22. An electronic device for storing characters in memory according to claim 21 wherein the keybutton extends through an opening in the glide key for movement therewith.

23. An electronic device for storing characters in memory according to claim 21 wherein the glide key has a recess in the top portion thereof.

24. An electronic device for storing characters in memory according to claim 12 including a key housing having an opening through which the keybutton extends for movement therein.

25. An electronic device for storing characters in memory according to claim 24 wherein the key housing has an opening through which the keyboard panel may be viewed.

26. An electronic device for storing characters in memory according to claim 12 and including another keybutton movable in a horizontal and vertical direction in relation to said keyboard panel and having means thereon to selectively actuate one of said switches on said membrane panel to store the character associated with the actuated switch in memory.

27. An electronic device for storing characters in memory according to claim 26 including a key housing having openings through which the keybuttons extend for movement therewith.

28. An electronic device for storing characters in memory according to claim 27 having an opening through which the keyboard panel may be viewed.

29. An electronic device for storing characters in memory comprising a membrane panel having a plurality of switches associated with characters to be stored, a keyboard panel having thereon representations of said characters, a keybutton movable in a vertical and parallel direction in relation to said membrane panel, indicating means coupled to said keybutton for movement therewith for indicating the character on said keyboard panel for storing in memory and said keybutton having means thereon to selectively actuate one of said switches on said membrane panel upon depression of said keybutton to store the character associated with the activated switch in memory.