GB1354501A - Electrical switch devices - Google Patents

Electrical switch devices

Info

Publication number
GB1354501A
GB1354501A GB4153870A GB1354501DA GB1354501A GB 1354501 A GB1354501 A GB 1354501A GB 4153870 A GB4153870 A GB 4153870A GB 1354501D A GB1354501D A GB 1354501DA GB 1354501 A GB1354501 A GB 1354501A
Authority
GB
United Kingdom
Prior art keywords
contact unit
magnetic
reed contact
actuation
aug
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
GB4153870A
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.)
Communications Patents Ltd
Original Assignee
Communications Patents Ltd
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 Communications Patents Ltd filed Critical Communications Patents Ltd
Publication of GB1354501A publication Critical patent/GB1354501A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/006—Permanent magnet actuating reed switches comprising a plurality of reed switches, e.g. selectors or joystick-operated

Abstract

1354501 Magnetic switches COMMUNICATIONS PATENTS Ltd 13 Aug 1971 [28 Aug 1970] 41538/70 Addition to 1285351 Heading H1N The switch of the parent Specification 1,285,351 is modified by the provision of means associated with at least one magnetic reed contact unit 1 which prevents magnetic actuation thereof or renders such actuation ineffective. As shown actuation of one reed contact unit by permanent magnet 6 is prevented by a magnetic shield 8 releasably engaged in a channel defined between a pair of ferromagnetic members. Alternatively (Fig. 2 not shown) each reed contact unit may be connected in series with a normally closed magnetic reed contact unit whose contacts may be biased open by a permanent magnet or electromagnet. Thus closure of a magnetic reed contact unit by movable magnet 6 is rendered ineffective by the magnetically biased contact unit in series therewith.
GB4153870A 1970-08-28 1970-08-28 Electrical switch devices Expired GB1354501A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4153870 1970-08-28

Publications (1)

Publication Number Publication Date
GB1354501A true GB1354501A (en) 1974-06-05

Family

ID=10420158

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4153870A Expired GB1354501A (en) 1970-08-28 1970-08-28 Electrical switch devices

Country Status (14)

Country Link
US (1) US3721929A (en)
AU (1) AU463747B2 (en)
BE (1) BE771854A (en)
CA (1) CA950012A (en)
CH (1) CH532834A (en)
DE (1) DE2142340A1 (en)
ES (1) ES200696Y (en)
FR (1) FR2112204B1 (en)
GB (1) GB1354501A (en)
IL (1) IL37571A (en)
MT (1) MTP703B (en)
NL (1) NL7111747A (en)
SE (1) SE388500B (en)
ZA (1) ZA715663B (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2128027A (en) * 1982-10-01 1984-04-18 Electronic Components Ltd Gearbox indicator switch
GB2129218A (en) * 1982-09-29 1984-05-10 Electronic Components Ltd Direction indicator cancellation device

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4213854A (en) * 1978-02-27 1980-07-22 Stekly Zdenek J J Magnetic separating apparatus with magnetic shielding means
JPS54131969U (en) * 1979-02-01 1979-09-12
US4408101A (en) * 1980-10-30 1983-10-04 Marcamor, Inc. Automatic telephone dialing apparatus with magnetic switch assembly
EP0104898B1 (en) * 1982-09-29 1986-01-02 AB Electronic Components Limited Gearbox indicator switch
DE3345822A1 (en) * 1983-12-17 1985-06-27 Josef Heinrichs Meßgeräte, 5000 Köln Electrical switching device for use in explosion-endangered areas
US5811892A (en) * 1996-10-22 1998-09-22 Kcs Industries, Inc. Power supply system including mechanical output switches for use with a plurality of display tubes
US6262647B1 (en) * 2000-10-23 2001-07-17 William P. Rogers Magnetic reed switching array

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3337825A (en) * 1966-03-14 1967-08-22 Brooks William Repeat-cycle switch having an electric motor driving a reciprocating actuator for a plurality of electrical switches
US3505869A (en) * 1968-04-17 1970-04-14 Us Air Force Apparatus for measuring fluid level in a container
FR1583237A (en) * 1968-06-20 1969-10-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129218A (en) * 1982-09-29 1984-05-10 Electronic Components Ltd Direction indicator cancellation device
GB2128027A (en) * 1982-10-01 1984-04-18 Electronic Components Ltd Gearbox indicator switch

Also Published As

Publication number Publication date
AU3270071A (en) 1973-03-01
IL37571A0 (en) 1971-11-29
FR2112204B1 (en) 1973-06-29
AU463747B2 (en) 1975-08-07
SE388500B (en) 1976-10-04
US3721929A (en) 1973-03-20
DE2142340A1 (en) 1972-03-02
IL37571A (en) 1974-09-10
ZA715663B (en) 1972-04-26
BE771854A (en) 1971-12-31
FR2112204A1 (en) 1972-06-16
ES200696U (en) 1975-09-01
ES200696Y (en) 1976-01-16
CA950012A (en) 1974-06-25
CH532834A (en) 1973-01-15
NL7111747A (en) 1972-03-01
MTP703B (en) 1972-02-23

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee