Electricity: circuit makers and breakers – Multiple circuit control – Multiple switch
Patent
1986-10-06
1988-08-02
Scott, J. R.
Electricity: circuit makers and breakers
Multiple circuit control
Multiple switch
400479, 400485, 400489, H01H 2504, H01H 1370, B41J 508
Patent
active
047615222
ABSTRACT:
A keyboard includes a plurality of keys thereon, each of which is capable of three different switching actions for entry of data or commands into a word processor, typewriter, computer or the like. Each key includes a first inclined surface for generating a first switching action responsive to finger contraction, a second inclined surface for generating a second switching action responsive to finger extension, and a horizontal surface for actuating a third switching action responsive to finger depression. Each key is connected to a respective switch. Each switch includes a carriage operating horizontally against spring-loaded horizontal plugs. The carriage houses a spring-loaded vertical stem attached to the respective key.
REFERENCES:
patent: 470874 (1892-03-01), Glidden
patent: 556422 (1896-03-01), Von Kunowski
patent: 674747 (1901-05-01), Vidal
patent: 695251 (1902-03-01), Vidal
patent: 777651 (1904-12-01), Cahili
patent: 1138474 (1915-05-01), Heidner
patent: 1200439 (1916-10-01), Kemble
patent: 1336151 (1920-04-01), O'Connor
patent: 1652464 (1927-12-01), Tyberg
patent: 1678334 (1928-07-01), Fischer
patent: 2318519 (1943-05-01), Palanque
patent: 3633724 (1972-01-01), Samuel
patent: 3693184 (1972-09-01), Maling
patent: 3929216 (1975-12-01), Einbinder
patent: 3945482 (1976-03-01), Einbinder
patent: 3950634 (1976-04-01), Speiser
patent: 4029915 (1977-06-01), Ojima
patent: 4042777 (1977-08-01), Bequaert et al.
patent: 4065650 (1977-12-01), Lou
patent: 4067431 (1978-01-01), Whitaker
patent: 4081068 (1978-03-01), Zapp
patent: 4096935 (1978-06-01), Hanakata et al.
patent: 4201489 (1980-05-01), Zapp
patent: 4265557 (1981-05-01), Runge
patent: 4274752 (1981-06-01), Huber et al.
patent: 4313685 (1982-02-01), Stahl et al.
patent: 4332493 (1982-06-01), Einbinder
patent: 4349286 (1982-09-01), Blaser et al.
patent: 4440515 (1984-04-01), Nassimbene
patent: 4443789 (1984-04-01), Endfield et al.
patent: 4449839 (1984-05-01), Bleuer
patent: 4467150 (1984-08-01), Leitermann et al.
patent: 4480937 (1984-11-01), Eckhardt
patent: 4506118 (1985-03-01), Mollman
patent: 4517424 (1985-05-01), Kroczynski
patent: 4553009 (1985-11-01), Van Zeeland et al.
patent: 4579470 (1986-04-01), Casey
patent: 4582967 (1986-04-01), Brumit et al.
patent: 4584443 (1986-04-01), Yaeger
Kowalski, D. C.; Xerox Disclosure Journal; "Semi-Captive Keyboard"; vol. 1, No. 2, Feb. 1976, p. 85.
McCollom Alan T.
Scott J. R.
LandOfFree
Finger operated switching apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Finger operated switching apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Finger operated switching apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-712757