US3842221A - Circuit breaker with automatic ice removal means on contact bar - Google Patents

Circuit breaker with automatic ice removal means on contact bar Download PDF

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Publication number
US3842221A
US3842221A US00408908A US40890873A US3842221A US 3842221 A US3842221 A US 3842221A US 00408908 A US00408908 A US 00408908A US 40890873 A US40890873 A US 40890873A US 3842221 A US3842221 A US 3842221A
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US
United States
Prior art keywords
bar
contact
ice
studs
wheel
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
US00408908A
Other languages
English (en)
Inventor
J Dayet
P Bastide
M Besson
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.)
Cegelec SA
Delle Alsthom SA
Original Assignee
Cegelec SA
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 Cegelec SA filed Critical Cegelec SA
Application granted granted Critical
Publication of US3842221A publication Critical patent/US3842221A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H31/00—Air-break switches for high tension without arc-extinguishing or arc-preventing means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S241/00—Solid material comminution or disintegration
    • Y10S241/17—Ice crushers

Definitions

  • SHEET 2 [IF 2 CIRCUIT BREAKER WITH AUTOMATIC ICE REMOVAL MEANS ON CONTACT BAR BACKGROUND OF THE INVENTION 1.
  • the invention relates to electrical devices whose contacts are subjected to weather conditions.
  • These devices comprise, generally, in co-operation, a fixed contact in the form of a bar and a mobile contact in the form of fingers, suitably insulated from the ground and connected by connection straps to a line or to another device.
  • a fixed contact in the form of a bar and a mobile contact in the form of fingers, suitably insulated from the ground and connected by connection straps to a line or to another device.
  • the invention has for its aim a device intended to break'the ice coating which. in the previous hypothetical case was accumulated on the bar, even before the contact fingers of the mobile came to bear againstit to i ensuring the passing of the current.
  • the invention has for its object an ice-breaking device for a separation device of an electrical equipment comprising a support for a mobile contact provided with fingers affecting a contact bar, characterised in that there exist, on the periphery of the bar, studs provided with means for driving the said studs about the bar when manipulating the device.
  • the studs are arranged on the lateral face, facing the mobile contact fingers of a wheel whose bar constitutes the axis.
  • the wheel is driven by a stop fixed to the mobile contact fingers affecting a tooth arranged at the periphery of the wheel.
  • FIG. 1 is a diagrammatic top view of a device according to the invention.
  • FIG. 2 is a sectional view about line 2-2 of FIG. 1 with the wheel 8 in FIG. I removed.
  • FIG. 3 is a top view of the circuit breaker assembly in a closed position immediately after the disintegration of the ice.
  • l designates a fixed contact assembly comprising a cylindrical contact bar 2 supported by the arms of a clevis 3 subjected to a holding device 4.
  • Two idle wheels 7 and 8, kept away from the arms of the clevis by spacers 9 and. 10 have been installed on the ends of the bar 4.
  • a mobile contact support assembly provided with contact fingers 6 and a stop bar 12 in the open position has been shown by a thick line at 5 and the same elements have been shown in the closed position on the contact bar 2 by dotted lines at 5', 6' and 12'.
  • the wheels 7 and 8 are ratchet wheels, provided, on the one hand, on their periphery with teeth such as 13 and 14 and, ,on the other hand, on their lateral face, facing the mobile contact fingers 6 and on the surface of the bar 2, with studs such as 11.
  • the operation of the device is as follows. On the closing movement of the mobile contact support 5, shown by the arrow F, at the end of the travel and before the coming into contact of the fingers 6 with the bar 2, the stop bar 12 meshes with one tooth of each of the wheels 7 and 8, this causing their rotation about the fixed bar 2.
  • the bar is thus rid of the greater part of the ice and the fingers 6 can come into contact with the bar; their rotating movement about the bar, by means of a known rotating device which is not shown, completes the removal of the ice from the bar.
  • the ratchet wheels 7 and 8 are provided with teeth all round the periphery of their circumference. Whatever the original position of the teeth of the wheels 7 and 8 may be on the bar 2 forming a fixed contact, the dimensioning of the teeth of the wheels 7 and 8 is such that the stop bar 12 always meshes with a tooth, on closing.
  • the wheels 7 and 8 may comprise only a single tooth; but in the case, a timing and return device provided, for example, by a spring or a counterweight, hold the tooth, when in the open position, in such a position that, on closing, the stop 12 automatically comes into contact with the single tooth of the wheels 7 and
  • an ice-breaking device for an electrical equipment separation device including; a mobile contact supported for movement and provided with fingers engageable with a fixed contact bar, the improvement comprising studs provided on the periphery of the bar, and means for driving, said studs in rotation about the 3.

Landscapes

  • Switch Cases, Indication, And Locking (AREA)
  • Weting (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
  • Mechanisms For Operating Contacts (AREA)
  • Suspension Of Electric Lines Or Cables (AREA)
US00408908A 1972-10-20 1973-10-23 Circuit breaker with automatic ice removal means on contact bar Expired - Lifetime US3842221A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7237319A FR2204028B1 (sv) 1972-10-20 1972-10-20

Publications (1)

Publication Number Publication Date
US3842221A true US3842221A (en) 1974-10-15

Family

ID=9105987

Family Applications (1)

Application Number Title Priority Date Filing Date
US00408908A Expired - Lifetime US3842221A (en) 1972-10-20 1973-10-23 Circuit breaker with automatic ice removal means on contact bar

Country Status (8)

Country Link
US (1) US3842221A (sv)
CA (1) CA1009695A (sv)
DE (1) DE2350889C2 (sv)
ES (1) ES419528A1 (sv)
FR (1) FR2204028B1 (sv)
IT (1) IT995726B (sv)
NO (1) NO135011C (sv)
SE (1) SE385998B (sv)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074094A (en) * 1976-02-10 1978-02-14 Bruno Lubbe Electric switch structure incorporating trip rod for sensing cable derailment and the like
US4074112A (en) * 1973-12-27 1978-02-14 Kelley Co., Inc. Switch assembly having movable contact face configuration for penetrating frost or ice layer on adjacent contact surface

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171450A (en) * 1937-07-22 1939-08-29 Tecalemit Ltd Means for detecting ice forming conditions, particularly when encountered by aircraft
US2280400A (en) * 1938-03-11 1942-04-21 Green Maurice Apparatus for detecting and/or preventing ice formation
US2549215A (en) * 1942-07-30 1951-04-17 Mansted Svend Axel Jorgen Method of and means for producing broken ice

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE935740C (de) * 1949-01-29 1955-11-24 Licentia Gmbh Hochspannungstrennschalter, insbesondere fuer Freiluftaufstellung
DE7028356U (de) * 1970-07-23 1971-01-28 Siemens Ag Hebeltrennschalter.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2171450A (en) * 1937-07-22 1939-08-29 Tecalemit Ltd Means for detecting ice forming conditions, particularly when encountered by aircraft
US2280400A (en) * 1938-03-11 1942-04-21 Green Maurice Apparatus for detecting and/or preventing ice formation
US2549215A (en) * 1942-07-30 1951-04-17 Mansted Svend Axel Jorgen Method of and means for producing broken ice

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4074112A (en) * 1973-12-27 1978-02-14 Kelley Co., Inc. Switch assembly having movable contact face configuration for penetrating frost or ice layer on adjacent contact surface
US4074094A (en) * 1976-02-10 1978-02-14 Bruno Lubbe Electric switch structure incorporating trip rod for sensing cable derailment and the like

Also Published As

Publication number Publication date
NO135011B (sv) 1976-10-11
ES419528A1 (es) 1976-05-01
FR2204028A1 (sv) 1974-05-17
SE385998B (sv) 1976-07-26
IT995726B (it) 1975-11-20
CA1009695A (en) 1977-05-03
NO135011C (sv) 1977-01-19
FR2204028B1 (sv) 1976-03-26
DE2350889C2 (de) 1981-10-29
DE2350889A1 (de) 1974-04-25

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