GB1284127A - Improvements in inductive devices - Google Patents

Improvements in inductive devices

Info

Publication number
GB1284127A
GB1284127A GB39547/69A GB3954769A GB1284127A GB 1284127 A GB1284127 A GB 1284127A GB 39547/69 A GB39547/69 A GB 39547/69A GB 3954769 A GB3954769 A GB 3954769A GB 1284127 A GB1284127 A GB 1284127A
Authority
GB
United Kingdom
Prior art keywords
transducer
pushbutton
magnetic
aug
core
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.)
Expired
Application number
GB39547/69A
Inventor
Amotz Frenkel
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.)
TRANSDUCERS SYSTEMS Inc
Original Assignee
TRANSDUCERS SYSTEMS Inc
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 TRANSDUCERS SYSTEMS Inc filed Critical TRANSDUCERS SYSTEMS Inc
Publication of GB1284127A publication Critical patent/GB1284127A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
    • H03K17/965—Switches controlled by moving an element forming part of the switch
    • H03K17/97—Switches controlled by moving an element forming part of the switch using a magnetic movable element
    • H03K2017/9706—Inductive element

Landscapes

  • Push-Button Switches (AREA)

Abstract

1284127 Non-contact making relays TRANSDUCER SYSTEMS Inc 7 Aug 1969 [20 Aug 1968] 39547/69 Heading H3B An inductive device including an inductive proximity transducer is used for a switch. In the embodiment of Fig. 1 a movable member in the form of a leaf spring 14 is secured at one end 16 to a panel 10 and made of magnetic material or carrying a magnetic body. When pushbutton 26 is pressed downwards the magnetic member 14 moves towards the core 30 of the differential transformer transducer to increase the output from terminals 38a, 38b of the secondary winding. An adjustable stop is provided by screw 44. In a second embodiment, Fig. 4 (not shown), the transducer is mounted in a cylindrical housing and the movable member is in the form of a pushbutton carrying a magnetic disc at one end and slidably mounted in the housing, the pushbutton being normally biased away from the tranformer core by a helical spring.
GB39547/69A 1968-08-20 1969-08-07 Improvements in inductive devices Expired GB1284127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US75406768A 1968-08-20 1968-08-20

Publications (1)

Publication Number Publication Date
GB1284127A true GB1284127A (en) 1972-08-02

Family

ID=25033355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB39547/69A Expired GB1284127A (en) 1968-08-20 1969-08-07 Improvements in inductive devices

Country Status (3)

Country Link
US (1) US3551865A (en)
FR (1) FR2015990A1 (en)
GB (1) GB1284127A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668697A (en) * 1970-09-24 1972-06-06 Hewlett Packard Co Noncontacting keyboard
US3765014A (en) * 1970-10-12 1973-10-09 Syner Data Inc Keyboard

Also Published As

Publication number Publication date
FR2015990A1 (en) 1970-04-30
US3551865A (en) 1970-12-29

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees