Expandable and contractible keyboard with adjustable key sizes

Details Expandable and contractible keyboard with adjustable key sizes Expandable and contractible keyboard with adjustable key sizes

2006-04-18

2006-04-18

Friedhofer, Michael A. (Department: 2832)

Electricity: circuit makers and breakers

Multiple circuit control

Multiple switch

C200S600000

Reexamination Certificate

active

07030323

ABSTRACT:
A keyboard which may be utilized in either an expanded or contracted state. A keyboard is comprised of an expandable and compressible housing which supports a plurality of elastic belts. Keyswitch assemblies are fastened to the elastic belt. When the keyboard housing is expanded, the elastic belts are stretched, and the distance between the keys is increased. The keytops can be of variable size so that upon expansion, they increase in size.

REFERENCES:
patent: 3940758 (1976-02-01), Margolin
patent: 4396810 (1983-08-01), Cover
patent: 4597681 (1986-07-01), Hodges
patent: 4661005 (1987-04-01), Lahr
patent: 4677600 (1987-06-01), Yoshida
patent: 5044798 (1991-09-01), Roylance et al.
patent: 5141343 (1992-08-01), Roylance et al.
patent: 5163765 (1992-11-01), Levy
patent: 5187644 (1993-02-01), Crisan
patent: 5212473 (1993-05-01), Louis
patent: 5220521 (1993-06-01), Kikinis
patent: 5337346 (1994-08-01), Uchikura
patent: 5439304 (1995-08-01), Phillips et al.
patent: 5457453 (1995-10-01), Chiu et al.
patent: 5459461 (1995-10-01), Crowley et al.
patent: 5519569 (1996-05-01), Sellers
patent: 5575576 (1996-11-01), Roysden, Jr.
patent: 5590020 (1996-12-01), Sellers
patent: 5742241 (1998-04-01), Crowley et al.
patent: 5743666 (1998-04-01), VanZeeland et al.
patent: 5870034 (1999-02-01), Wood
patent: 5938353 (1999-08-01), Butler
patent: 5951178 (1999-09-01), Lim
patent: 5982612 (1999-11-01), Roylance
patent: 5995025 (1999-11-01), Sternglass et al.
patent: 6019530 (2000-02-01), Lanzetta et al.
patent: 6036093 (2000-03-01), Schultz
patent: 6056456 (2000-05-01), Kinoshita
patent: 6059470 (2000-05-01), Myint
patent: 6068417 (2000-05-01), Butler
patent: 6087966 (2000-07-01), Sato
patent: 6092944 (2000-07-01), Butler
patent: 6111527 (2000-08-01), Susel
patent: 6151012 (2000-11-01), Bullister
patent: 6152627 (2000-11-01), Watanabe et al.
patent: 6174097 (2001-01-01), Daniel
patent: 6257782 (2001-07-01), Maruyama et al.
patent: 6266234 (2001-07-01), Leman
patent: 6327482 (2001-12-01), Miyashita
patent: 6714403 (2004-03-01), Furuki et al.
patent: 6739774 (2004-05-01), Lahr
patent: 2001/0003450 (2001-06-01), Hemia et al.
patent: 2001/0012195 (2001-08-01), Lefort
patent: 2001/0028712 (2001-10-01), Lahr
patent: 04006721 (1992-01-01), None

Affiliated with

Also associated with

Rating

Expandable and contractible keyboard with adjustable key sizes does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Expandable and contractible keyboard with adjustable key sizes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Expandable and contractible keyboard with adjustable key sizes will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3595210