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1. (WO1991018265) KEYBOARD HAVING VISIBLE AND INVISIBLE STATES
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/018265 International Application No.: PCT/GB1991/000794
Publication Date: 28.11.1991 International Filing Date: 21.05.1991
Chapter 2 Demand Filed: 30.09.1991
IPC:
G01D 9/00 (2006.01) ,G01D 11/28 (2006.01) ,G09F 13/20 (2006.01)
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
9
Recording measured values
G PHYSICS
01
MEASURING; TESTING
D
MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED BY A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; TRANSFERRING OR TRANSDUCING ARRANGEMENTS NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
11
Component parts of measuring arrangements not specially adapted for a specific variable
28
Structurally-combined illuminating devices
G PHYSICS
09
EDUCATING; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
F
DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
13
Illuminated signs; Luminous advertising
20
with luminescent surfaces or parts
Applicants:
EUROTHERM RECORDERS LIMITED [GB/GB]; Dominion Way Worthing West Sussex BN14 8QL, GB (AllExceptUS)
LOEBER, Peter, John [GB/GB]; GB (UsOnly)
HURST, Peter, William [GB/GB]; GB (UsOnly)
Inventors:
LOEBER, Peter, John; GB
HURST, Peter, William; GB
Agent:
LAWSON, David, Glynne; Marks & Clerk 57-60 Lincoln's Inn Fields London WC2A 3LS, GB
Priority Data:
9011344.021.05.1990GB
Title (EN) KEYBOARD HAVING VISIBLE AND INVISIBLE STATES
(FR) CLAVIER COMPORTANT UN ETAT VISIBLE ET UN ETAT INVISIBLE
Abstract:
(EN) A chart recorder or other instrument has a window (10) within which is a key panel (1) composed of materials which are transparent in normal conditions. Incorporated in or associated with the individual elements of the key panel are display element (22) applied to the transparent window material (20). The display elements are normally transparent but become visible for example by fluorescence, when illuminated by radiation transmitted through the body of the transparent window material (20), rendering the key panel visible when needed for use.
(FR) Un enregistreur graphique ou tout autre instrument est pourvu d'une fenêtre (10) dans laquelle se trouve un panneau de touches (1) composé de matériaux normalement transparents. Des éléments d'affichage (22), incorporés dans les éléments individuels du panneau de touches ou associés à ceux-ci, sont appliqués au matériau transparent (20) de la fenêtre. Ces éléments d'affichage sont normalement transparents mais deviennent visibles, par exemple par fluorescence, lorsqu'ils sont illuminés par un rayonnement transmis à travers le corps du matériau transparent (20) de la fenêtre, ce qui rend le panneau de touches visible lorsqu'il doit être utilisé.
Designated States: AT, AU, BB, BG, BR, CA, CH, DE, DK, ES, FI, GB, HU, JP, KP, KR, LK, LU, MC, MG, MW, NL, NO, PL, RO, SD, SE, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, ML, MR, SN, TD, TG)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
US5544020DE000004191079GB2260840AU1991078679