WO1995035577A3 - Improved dual element circuit protection device - Google Patents

Improved dual element circuit protection device Download PDF

Info

Publication number
WO1995035577A3
WO1995035577A3 PCT/US1995/007900 US9507900W WO9535577A3 WO 1995035577 A3 WO1995035577 A3 WO 1995035577A3 US 9507900 W US9507900 W US 9507900W WO 9535577 A3 WO9535577 A3 WO 9535577A3
Authority
WO
WIPO (PCT)
Prior art keywords
ptc
disc
shaped component
protection device
fusible link
Prior art date
Application number
PCT/US1995/007900
Other languages
French (fr)
Other versions
WO1995035577A2 (en
Inventor
James P Stoffel
Mike A Ward
Original Assignee
Littelfuse 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 Littelfuse Inc filed Critical Littelfuse Inc
Priority to AU29069/95A priority Critical patent/AU2906995A/en
Publication of WO1995035577A2 publication Critical patent/WO1995035577A2/en
Publication of WO1995035577A3 publication Critical patent/WO1995035577A3/en

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/048—Fuse resistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/0241—Structural association of a fuse and another component or apparatus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
    • H01H85/02—Details
    • H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
    • H01H85/041—Fuses, i.e. expendable parts of the protective device, e.g. cartridges characterised by the type
    • H01H85/048—Fuse resistors
    • H01H2085/0483—Fuse resistors with temperature dependent resistor, e.g. thermistor

Abstract

The invention is a combination electrical fuse, said combination comprising, in series, a positive temperature coefficient (PTC) disc-shaped component (12) and a fusible link. The PTC disc-shaped component (12) comprises a central region (18), including PTC material and outer, circular electrodes on opposite sides of the disc-shaped component. The PTC material is preferably ceramic barium titanate, and the fusible link is preferably a thin metal wire. The fusible link and PTC material are enclosed within an insulating material, which is preferably made of a thermoplastic.
PCT/US1995/007900 1994-06-22 1995-06-21 Improved dual element circuit protection device WO1995035577A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU29069/95A AU2906995A (en) 1994-06-22 1995-06-21 Improved dual element circuit protection device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US26358394A 1994-06-22 1994-06-22
US08/263,583 1994-06-22

Publications (2)

Publication Number Publication Date
WO1995035577A2 WO1995035577A2 (en) 1995-12-28
WO1995035577A3 true WO1995035577A3 (en) 1996-03-28

Family

ID=23002392

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/007900 WO1995035577A2 (en) 1994-06-22 1995-06-21 Improved dual element circuit protection device

Country Status (2)

Country Link
AU (1) AU2906995A (en)
WO (1) WO1995035577A2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19639942C2 (en) * 1996-09-27 1999-07-01 Siemens Matsushita Components Thermal fuse
DE29621154U1 (en) * 1996-12-05 1998-04-02 Wickmann Werke Gmbh Electrical fuse
DE10148863B4 (en) * 2001-10-04 2007-07-05 Tyco Electronics Logistics Ag Electronic device

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096464A (en) * 1976-12-13 1978-06-20 Gte Sylvania Incorporated Thermistor assembly having overload protection
US4728779A (en) * 1985-09-27 1988-03-01 Tdk Corporation PTC heating device
JPS6466904A (en) * 1987-09-07 1989-03-13 Murata Manufacturing Co Positive temperature coefficient thermistor
JPH0478102A (en) * 1990-07-19 1992-03-12 Murata Mfg Co Ltd Excess current protective component
JPH0478104A (en) * 1990-07-19 1992-03-12 Murata Mfg Co Ltd Excess current protective component
JPH04114402A (en) * 1990-09-04 1992-04-15 Murata Mfg Co Ltd Overvoltage protecting part
DE4143095C1 (en) * 1991-12-27 1993-04-08 Roederstein Spezialfabriken Fuer Bauelemente Der Elektronik Und Kondensatoren Der Starkstromtechnik Gmbh, 8300 Landshut, De Electrical building block, for simplicity and reliability - comprises resistor in series with melt fuse and connection element forming protective wall section, fixed on substrate with silicone adhesive
JPH05299206A (en) * 1992-04-23 1993-11-12 Murata Mfg Co Ltd Overvoltage protecting part
EP0575783A1 (en) * 1992-06-12 1993-12-29 ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH Electrical unit

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4096464A (en) * 1976-12-13 1978-06-20 Gte Sylvania Incorporated Thermistor assembly having overload protection
US4728779A (en) * 1985-09-27 1988-03-01 Tdk Corporation PTC heating device
JPS6466904A (en) * 1987-09-07 1989-03-13 Murata Manufacturing Co Positive temperature coefficient thermistor
JPH0478102A (en) * 1990-07-19 1992-03-12 Murata Mfg Co Ltd Excess current protective component
JPH0478104A (en) * 1990-07-19 1992-03-12 Murata Mfg Co Ltd Excess current protective component
JPH04114402A (en) * 1990-09-04 1992-04-15 Murata Mfg Co Ltd Overvoltage protecting part
DE4143095C1 (en) * 1991-12-27 1993-04-08 Roederstein Spezialfabriken Fuer Bauelemente Der Elektronik Und Kondensatoren Der Starkstromtechnik Gmbh, 8300 Landshut, De Electrical building block, for simplicity and reliability - comprises resistor in series with melt fuse and connection element forming protective wall section, fixed on substrate with silicone adhesive
JPH05299206A (en) * 1992-04-23 1993-11-12 Murata Mfg Co Ltd Overvoltage protecting part
EP0575783A1 (en) * 1992-06-12 1993-12-29 ROEDERSTEIN SPEZIALFABRIKEN FÜR BAUELEMENTE DER ELEKTRONIK UND KONDENSATOREN DER STARKSTROMTECHNIK GmbH Electrical unit

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 013, no. 280 (E - 779) 27 June 1989 (1989-06-27) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 294 (E - 1225) 29 June 1992 (1992-06-29) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 360 (E - 1243) 4 August 1992 (1992-08-04) *
PATENT ABSTRACTS OF JAPAN vol. 018, no. 091 (E - 1508) 15 February 1994 (1994-02-15) *

Also Published As

Publication number Publication date
AU2906995A (en) 1996-01-15
WO1995035577A2 (en) 1995-12-28

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