GB2010589A - A magnetically operated switch for a telephone instrument - Google Patents

A magnetically operated switch for a telephone instrument

Info

Publication number
GB2010589A
GB2010589A GB7901528A GB7901528A GB2010589A GB 2010589 A GB2010589 A GB 2010589A GB 7901528 A GB7901528 A GB 7901528A GB 7901528 A GB7901528 A GB 7901528A GB 2010589 A GB2010589 A GB 2010589A
Authority
GB
United Kingdom
Prior art keywords
switch
operated switch
telephone instrument
magnetically operated
handset
Prior art date
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.)
Withdrawn
Application number
GB7901528A
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.)
Post Office
Original Assignee
Post Office
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 Post Office filed Critical Post Office
Priority to GB7901528A priority Critical patent/GB2010589A/en
Publication of GB2010589A publication Critical patent/GB2010589A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/02—Constructional features of telephone sets
    • H04M1/04—Supports for telephone transmitters or receivers
    • H04M1/06—Hooks; Cradles
    • H04M1/10—Hooks; Cradles associated with switches operated by magnetic effect due to proximity of receiver or hand-set
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/008—Change of magnetic field wherein the magnet and switch are fixed, e.g. by shielding or relative movements of armature

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Telephone Set Structure (AREA)

Abstract

A switch 33 is actuated when a shunt 25, 29 is deflected to expose the switch to flux from a magnet 31. The switch 33 is also operated by a magnet 37 in a telephone handset 3 when this is cradled on the base 1. When the handset is removed from the base the switch signals the off- hook condition. A button 21 by pivoting the shunt 25, 29 allows an on-hook condition to be signalled without the need to replace the handset. <IMAGE>
GB7901528A 1977-12-15 1979-01-16 A magnetically operated switch for a telephone instrument Withdrawn GB2010589A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7901528A GB2010589A (en) 1977-12-15 1979-01-16 A magnetically operated switch for a telephone instrument

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB5227677 1977-12-15
GB7901528A GB2010589A (en) 1977-12-15 1979-01-16 A magnetically operated switch for a telephone instrument

Publications (1)

Publication Number Publication Date
GB2010589A true GB2010589A (en) 1979-06-27

Family

ID=26267031

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7901528A Withdrawn GB2010589A (en) 1977-12-15 1979-01-16 A magnetically operated switch for a telephone instrument

Country Status (1)

Country Link
GB (1) GB2010589A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991020089A1 (en) * 1990-06-18 1991-12-26 James Timothy Toohey A switch assembly and activation mechanism
AU661967B2 (en) * 1990-06-18 1995-08-17 Interphaze Pty Ltd A switch assembly and activation mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1991020089A1 (en) * 1990-06-18 1991-12-26 James Timothy Toohey A switch assembly and activation mechanism
AU661967B2 (en) * 1990-06-18 1995-08-17 Interphaze Pty Ltd A switch assembly and activation mechanism

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)