US3174016A - Repairable fuse with a transversely divided insulating sleeve - Google Patents

Repairable fuse with a transversely divided insulating sleeve Download PDF

Info

Publication number
US3174016A
US3174016A US45123A US4512360A US3174016A US 3174016 A US3174016 A US 3174016A US 45123 A US45123 A US 45123A US 4512360 A US4512360 A US 4512360A US 3174016 A US3174016 A US 3174016A
Authority
US
United States
Prior art keywords
fuse
sleeve
insulating sleeve
repairable
transversely divided
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 - Lifetime
Application number
US45123A
Other languages
English (en)
Inventor
Kamminga Heiko
Brandhorst Willem
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.)
Hazemeijer BV
Original Assignee
Hazemeijer BV
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 Hazemeijer BV filed Critical Hazemeijer BV
Application granted granted Critical
Publication of US3174016A publication Critical patent/US3174016A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • H01H85/05—Component parts thereof
    • H01H85/165—Casings
    • H01H85/175—Casings characterised by the casing shape or form
    • H01H85/1755—Casings characterised by the casing shape or form composite casing

Definitions

  • the invention relates to a repairable, short circuit proof fuse, comprising external contact members (in particular knife contacts) and filled with a powdered or a granular extinguishing medium, with a fuse link embedded therein.
  • the sleeve of the fuse a tubular element, the external circumference of which may or may not be circular, said element being made of insulating material, such as synthetic moulding resin or ceramic material.
  • the external contact members are usually also supported by the metal endplates and are fastened to or through the latter, which necessitates additional fastening means.
  • ferro-metal endplates cause eddy current losses, resulting in an appreciable rise of temperature.
  • the invention not only obviates the above-mentioned disadvantages, but also furnishes an efficient solution for satisfying the special sealing requirements.
  • the invention provides in an attractive way, also from the point of view of manufacture, for a repairable, short circuit proof fuse, for low voltages and relatively high currents, in which the fuse conductor is embedded in a powdered or granular extinguishing medium and fitted between flanged parts of external contact mem- 3,174,016 Patented Mar.
  • a division along a transverse plane at any given angle will yield a cup-shaped sleeve element that can be moulded in one single direction
  • a division along a transverse plane at right angles to the longitudinal axis of the cup-shaped sleeve element is preferred.
  • the single figure is a perspective view partly in section of the fuse assembly of the invention.
  • the short circuit proof knife fuse shown in the drawing consists of two identical cup-shaped sleeve elements 1, of insulating material, which are fastened together coaxially. They contain two fuse links 2, connected firmly and conductively to flat flanged parts 3 of knife contacts 4.
  • Each of the sleeve elements 1 is made of an insulating synthetic moulding resin and has been moulded to be removed from the mould in the direction opposite to the pressing direction.
  • a number of openings are made during the moulding process.
  • a slot-shaped opening for the knife of the knife contact 4 to pass through with an accurate fit.
  • twoopenings accommodating fastening screws 5 for the knife contacts 4.
  • an opening 6 for filling the fuse with sand and for accommodating an indicator, if desired.
  • each circular sleeve element 1 is in the form of a square flange 7 with rounded corners, also at right angles to the longitudinal axis of the sleeve element.
  • Arranged symmetrically at the four corners are countersunk holes 8 and continuous holes 9.
  • the basic element of the repairable fuse under consideration is the unit comprising the two knife contacts 4 and the fuse links 2 connected therebetween.
  • One of the cup-shaped sleeve elements 1 is pushed over each of the contact knives until it rests against the flanged part 3.
  • the flanged part 3 is drawn close against the flat inside of the sleeve element.
  • the flanged part 3 is provided with screwed holes.
  • said flanged part 3 provides a satisfactory seal against the end face of the sleeve element.
  • screws 10 and nuts 11 the flat faces of the flanges are pulled against one another and thereby sealed.
  • a repairable fuse comprising in combination, a housing consisting of a pair of identical one piece cup shaped sleeve elements of insulating material having a slot shaped aperture in one end thereof opposite a sealing flange thereon at the other end, removable clamping elements holding the flanges together along a plane of division transverse to the longitudinal axis of the fuse to form a housing which may be disassembled during repair of the fuse, a pair of contacts having straight knife blades which register with said apertures and extend from a flanged part, removable mounting means adjacent said slotted apertures in said sleeve elements affixing said contact flanges Within said housing with the knife contacts extending through said apertures in sealing relationship terminated with the flanged portion positioned adjacent the interior surface of the end Wall of each cup to thereby permit removal of said knife contact from said sleeve through said aperture upon disassembiy of the fuse for repair, and a fuse link connecting the flanged portions of said knife contacts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Fuses (AREA)
  • Joining Of Glass To Other Materials (AREA)
US45123A 1959-08-01 1960-07-25 Repairable fuse with a transversely divided insulating sleeve Expired - Lifetime US3174016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL241938 1959-08-01

Publications (1)

Publication Number Publication Date
US3174016A true US3174016A (en) 1965-03-16

Family

ID=19751856

Family Applications (1)

Application Number Title Priority Date Filing Date
US45123A Expired - Lifetime US3174016A (en) 1959-08-01 1960-07-25 Repairable fuse with a transversely divided insulating sleeve

Country Status (7)

Country Link
US (1) US3174016A (enrdf_load_html_response)
BE (1) BE593635A (enrdf_load_html_response)
DE (1) DE1240977B (enrdf_load_html_response)
ES (1) ES259959A1 (enrdf_load_html_response)
FR (1) FR1271560A (enrdf_load_html_response)
GB (1) GB955033A (enrdf_load_html_response)
NL (1) NL97133C (enrdf_load_html_response)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357234A (en) * 1993-04-23 1994-10-18 Gould Electronics Inc. Current limiting fuse

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE497748A (enrdf_load_html_response) * 1949-08-26
DE973817C (de) * 1951-03-05 1960-06-15 Licentia Gmbh Verfahren zur Herstellung eines Trockengleichrichters
BE516364A (enrdf_load_html_response) * 1951-12-20
FR2422249A1 (fr) * 1978-03-07 1979-11-02 Legrand Sa Cartouche-fusible a couteaux

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1960408A (en) * 1933-10-04 1934-05-29 Leon S Brach Means for preventing radio interference from neon signs
US2046221A (en) * 1933-07-28 1936-06-30 William O Thomas Coupling
US2132022A (en) * 1935-01-14 1938-10-04 Harrison J L Frank Trolley collector for electrical distribution systems
GB493988A (en) * 1937-12-28 1938-10-18 Vernon Hope Improvements in electric fuses
US2683200A (en) * 1951-08-21 1954-07-06 Burndy Engineering Co Inc Sleeve disconnector locking means
US2700085A (en) * 1953-07-30 1955-01-18 Westinghouse Air Brake Co Electrical fuse device
US2759065A (en) * 1955-01-10 1956-08-14 Moeller Arthur Edward Fuse holder
US2863967A (en) * 1957-04-26 1958-12-09 Chase Shawmut Co Current-limiting power fuses of reduced size
US2866875A (en) * 1957-06-21 1958-12-30 Chase Shawmut Co Watertight high current-carrying-capacity low-voltage current-limiting fuses

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE514316A (enrdf_load_html_response) * 1951-09-29
US2837614A (en) * 1953-10-19 1958-06-03 Mc Graw Edison Co Protectors for electric circuits
DE960117C (de) * 1954-06-12 1957-03-14 Siemens Ag Niederspannungssicherung mit mehrteiligem, vorzugsweise laengs geteiltem Patronenkoerper

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046221A (en) * 1933-07-28 1936-06-30 William O Thomas Coupling
US1960408A (en) * 1933-10-04 1934-05-29 Leon S Brach Means for preventing radio interference from neon signs
US2132022A (en) * 1935-01-14 1938-10-04 Harrison J L Frank Trolley collector for electrical distribution systems
GB493988A (en) * 1937-12-28 1938-10-18 Vernon Hope Improvements in electric fuses
US2683200A (en) * 1951-08-21 1954-07-06 Burndy Engineering Co Inc Sleeve disconnector locking means
US2700085A (en) * 1953-07-30 1955-01-18 Westinghouse Air Brake Co Electrical fuse device
US2759065A (en) * 1955-01-10 1956-08-14 Moeller Arthur Edward Fuse holder
US2863967A (en) * 1957-04-26 1958-12-09 Chase Shawmut Co Current-limiting power fuses of reduced size
US2866875A (en) * 1957-06-21 1958-12-30 Chase Shawmut Co Watertight high current-carrying-capacity low-voltage current-limiting fuses

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5357234A (en) * 1993-04-23 1994-10-18 Gould Electronics Inc. Current limiting fuse
US5426411A (en) * 1993-04-23 1995-06-20 Gould Electronics Inc. Current limiting fuse

Also Published As

Publication number Publication date
FR1271560A (enrdf_load_html_response) 1962-01-19
DE1240977B (de) 1967-05-24
GB955033A (en) 1964-04-08
BE593635A (nl) 1961-02-01
NL97133C (enrdf_load_html_response) 1900-01-01
ES259959A1 (es) 1961-12-16

Similar Documents

Publication Publication Date Title
US3174016A (en) Repairable fuse with a transversely divided insulating sleeve
US3226463A (en) Methods of making circuit components
US4649637A (en) Method for producing resin-molded semiconductor device having heat radiating plate embedded in the resin
US2560209A (en) Conductivity cell
US3693128A (en) Convection cooled fuse
CA2029081A1 (en) Electrical fuse with coated time delay element
US2947846A (en) Heating apparatus
US2866875A (en) Watertight high current-carrying-capacity low-voltage current-limiting fuses
US3405225A (en) Universal thermocouple head
KR0147297B1 (ko) 세라믹 케이스를 가진 진공 단속기
US3233198A (en) Hermetically sealed distribution transformer
US2780715A (en) Immersion heater
US3539956A (en) Low profile relay
US3585563A (en) Variable resistor construction having spring terminal clips surrounded by a potting agent
US2876425A (en) hampel
US3978377A (en) Hermetic bushing for terminals for electrolytic filter capacitors
US2410041A (en) Piezoelectric crystal cabinet
SU513651A3 (ru) Плавкий предохранитель
US3866318A (en) Method of manufacturing high-voltage fuse
US2425481A (en) Quartz oscillator plateholder
US4521170A (en) Power semiconductor component for liquid cooling
US3147355A (en) Electrical fuse of the cartridge type incorporating cylindrical assembly of fusible links
US3407958A (en) Joints between a cap and a housing of a bipartite envelope
US3634812A (en) Fuse clamp
US2508232A (en) Holder for piezoelectric oscillators