GB1356578A - Switching devices - Google Patents

Switching devices

Info

Publication number
GB1356578A
GB1356578A GB4259770A GB4259770A GB1356578A GB 1356578 A GB1356578 A GB 1356578A GB 4259770 A GB4259770 A GB 4259770A GB 4259770 A GB4259770 A GB 4259770A GB 1356578 A GB1356578 A GB 1356578A
Authority
GB
United Kingdom
Prior art keywords
block
cover
mass
fixed contact
contact
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
GB4259770A
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.)
Kenneth E Beswick Ltd
Original Assignee
Kenneth E Beswick 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 Kenneth E Beswick Ltd filed Critical Kenneth E Beswick Ltd
Priority to GB4259770A priority Critical patent/GB1356578A/en
Publication of GB1356578A publication Critical patent/GB1356578A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H37/761—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit
    • H01H2037/762—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts
    • H01H2037/763—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material with a fusible element forming part of the switched circuit using a spring for opening the circuit when the fusible element melts the spring being a blade spring
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H37/00—Thermally-actuated switches
    • H01H37/74—Switches in which only the opening movement or only the closing movement of a contact is effected by heating or cooling
    • H01H37/76—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material
    • H01H2037/768—Contact member actuated by melting of fusible material, actuated due to burning of combustible material or due to explosion of explosive material characterised by the composition of the fusible material

Abstract

1356578 Temperature responsive switches KENNETH E BESWICK Ltd 2 Sept 1971 [4 Sept 1970] 42597/70 Heading H1N A thermal cut out comprises a fixed contact 1 and a resilient movable contact 2 shaped so as to have a portion 2a resiliently biased towards the fixed contact 1 and held in engagement by a fusible mass 3. When a predetermined temperature is reached the mass 3 melts and the contact portions la, 2a slide apart. The cut out comprises a casing consisting of a block 4 and a cover 5, the block holding the conducting parts firmly inside the cover. The movable contact 2 is clamped between the block and cover and located by lugs 6 engaging in grooves 7 in the block; a terminal 13 is similarly mounted and located by a curved portion 10 and is connected by a fuse wire 9 to the fixed contact 1. The latter is clamped between the casing and an extension 4a of the block. Terminals 12, 13 may be for solding or plug-in connections. The flexible mass 3 is of a bismuth-cadmium-lead alloy.
GB4259770A 1970-09-04 1970-09-04 Switching devices Expired GB1356578A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4259770A GB1356578A (en) 1970-09-04 1970-09-04 Switching devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4259770A GB1356578A (en) 1970-09-04 1970-09-04 Switching devices

Publications (1)

Publication Number Publication Date
GB1356578A true GB1356578A (en) 1974-06-12

Family

ID=10425145

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4259770A Expired GB1356578A (en) 1970-09-04 1970-09-04 Switching devices

Country Status (1)

Country Link
GB (1) GB1356578A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435121A1 (en) * 1978-08-30 1980-03-28 Beswick Kenneth E Ltd THERMAL CIRCUIT BREAKER AND METHOD FOR ASSEMBLING A SERIES OF SUCH CIRCUIT BREAKERS
EP0762455A1 (en) * 1995-09-12 1997-03-12 Emerson Electric Co. Thermal cutoff and fuse
EP0828269A2 (en) * 1996-09-09 1998-03-11 Mikizo Kasamatsu Dual-functional fuse unit that is responsive to electric current and ambient temperature
WO2013000796A3 (en) * 2011-06-30 2013-03-28 Epcos Ag Electric device
US9496112B2 (en) 2011-06-30 2016-11-15 Epcos Ag Electric device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2435121A1 (en) * 1978-08-30 1980-03-28 Beswick Kenneth E Ltd THERMAL CIRCUIT BREAKER AND METHOD FOR ASSEMBLING A SERIES OF SUCH CIRCUIT BREAKERS
EP0762455A1 (en) * 1995-09-12 1997-03-12 Emerson Electric Co. Thermal cutoff and fuse
EP0828269A2 (en) * 1996-09-09 1998-03-11 Mikizo Kasamatsu Dual-functional fuse unit that is responsive to electric current and ambient temperature
EP0828269A3 (en) * 1996-09-09 1998-05-27 Mikizo Kasamatsu Dual-functional fuse unit that is responsive to electric current and ambient temperature
WO2013000796A3 (en) * 2011-06-30 2013-03-28 Epcos Ag Electric device
US9496112B2 (en) 2011-06-30 2016-11-15 Epcos Ag Electric device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee