IT1262368B - REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS. - Google Patents

REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS.

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Publication number
IT1262368B
IT1262368B ITRM930407A ITRM930407A IT1262368B IT 1262368 B IT1262368 B IT 1262368B IT RM930407 A ITRM930407 A IT RM930407A IT RM930407 A ITRM930407 A IT RM930407A IT 1262368 B IT1262368 B IT 1262368B
Authority
IT
Italy
Prior art keywords
hammer
spring
keyboards
button
rests
Prior art date
Application number
ITRM930407A
Other languages
Italian (it)
Inventor
Lino Ragni
Original Assignee
Fatar Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fatar Srl filed Critical Fatar Srl
Priority to ITRM930407A priority Critical patent/IT1262368B/en
Publication of ITRM930407A0 publication Critical patent/ITRM930407A0/en
Publication of ITRM930407A1 publication Critical patent/ITRM930407A1/en
Application granted granted Critical
Publication of IT1262368B publication Critical patent/IT1262368B/en

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Abstract

Il martelletto ritorna in posizione di riposo per effetto dell'azione di una molla di spinta, azionata dal tasto quando abbassato, e posizionata tra il martelletto e un supporto, il martelletto, sostanzialmente conformato in un sol blocco, presentando due porzioni disposte angolate fra loro ciascuna delle quali presenta una superficie destinata, rispettivamente, la prima a fornire un appoggio all'appendice di comando del tasto e l'altra a presentare un vincolo per la molla che, allo stato di riposo, ha il suo asse giacente su un piano parallelo al piano del martelletto su cui agisce il tasto, detto parallelismo cessando di esistere con il variare dell'inclinazione della superficie del martelletto a cui la molla si appoggia.La superficie del martelletto su cui si appoggia l'appendice di comando del tasto, leggermente inclinata verso il basso, aumenta questa inclinazione per effetto della spinta del tasto e contemporaneamente la superficie del martelletto su cui si appoggia la molla si sposta corrispondentemente angolarmente verso l'alto.The hammer returns to its rest position due to the action of a thrust spring, operated by the button when lowered, and positioned between the hammer and a support, the hammer, substantially shaped in a single block, presenting two portions arranged at an angle to each other each of which has a surface intended, respectively, the first to provide a support to the button control appendix and the other to present a constraint for the spring which, in the rest state, has its axis lying on a parallel plane to the plane of the hammer on which the key acts, said parallelism ceasing to exist with the variation of the inclination of the surface of the hammer to which the spring rests. The surface of the hammer on which the button control appendix rests, slightly inclined downwards, this inclination increases due to the push of the button and at the same time the surface of the hammer on which the spring rests is placed correspondingly angularly upwards.

ITRM930407A 1993-06-23 1993-06-23 REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS. IT1262368B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
ITRM930407A IT1262368B (en) 1993-06-23 1993-06-23 REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITRM930407A IT1262368B (en) 1993-06-23 1993-06-23 REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS.

Publications (3)

Publication Number Publication Date
ITRM930407A0 ITRM930407A0 (en) 1993-06-23
ITRM930407A1 ITRM930407A1 (en) 1994-12-23
IT1262368B true IT1262368B (en) 1996-06-19

Family

ID=11401817

Family Applications (1)

Application Number Title Priority Date Filing Date
ITRM930407A IT1262368B (en) 1993-06-23 1993-06-23 REFERENCES TO ELECTRONIC KEYBOARDS AND IN PARTICULAR TO PIANO KEYBOARDS.

Country Status (1)

Country Link
IT (1) IT1262368B (en)

Also Published As

Publication number Publication date
ITRM930407A0 (en) 1993-06-23
ITRM930407A1 (en) 1994-12-23

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Legal Events

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0001 Granted