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.)
Expired
Application number
GB11518/58A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLCfiledCriticalStandard Telephone and Cables PLC
Publication of GB826339ApublicationCriticalpatent/GB826339A/en
H01H63/00—Details of electrically-operated selector switches
H01H63/02—Contacts; Wipers; Connections thereto
H01H63/04—Contact-making or contact-breaking wipers; Position indicators therefor
Landscapes
Mobile Radio Communication Systems
(AREA)
Abstract
826,339. Automatic exchange switches. STANDARD TELEPHONES & CABLES Ltd. April 11, 1958 [April 18, 1957], No. 11518/58. Class 40 (4). In a rotary switch, the natural frequencies of vibration of a spring wiper 4 are raised by the provision of an auxiliary spring, shorter than and parallel to the wiper, which bears on the wiper through a nylon stud 10, the auxiliary spring being an extension of a wiper 4<1> adjacent and opposite to the wiper 4.