Legal status (The legal status 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 status listed.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nokia Spain SA
Original Assignee
Alcatel Espana SA
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 Alcatel Espana SAfiledCriticalAlcatel Espana SA
Priority to ES1981257534UpriorityCriticalpatent/ES257534Y/en
Publication of ES257534UpublicationCriticalpatent/ES257534U/en
Application grantedgrantedCritical
Publication of ES257534YpublicationCriticalpatent/ES257534Y/en
Improvements in ring regulating devices, particularly of the type used in telephone sets, characterized by said improvements because the device, which is independent of said bell, is formed by the conjunction of a regulating "button" and a pair of springs, foreign to it, usually in contact with each other, and through which the bell receives its power supply and in which said button is mounted on the base plate of the telephone apparatus by simple fitting in the appropriate housing; it can then be rotated on itself according to an axis perpendicular to the clamper carrying stem of said bell providing three well-defined sound positions. One that interrupts the power supply of the timbre (null sound), another that imprisons the rod carrying the clapper (minimum sound) and another that leaves the rod free (maximum sound). (Machine-translation by Google Translate, not legally binding)
ES1981257534U1981-04-091981-04-09
IMPROVEMENTS IN RING REGULATOR DEVICES
ExpiredES257534Y
(en)