US3533025A - Flat pack relay - Google Patents

Flat pack relay Download PDF

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Publication number
US3533025A
US3533025A US795497*A US3533025DA US3533025A US 3533025 A US3533025 A US 3533025A US 3533025D A US3533025D A US 3533025DA US 3533025 A US3533025 A US 3533025A
Authority
US
United States
Prior art keywords
pole pieces
relay
envelope
armature
magnetic
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
US795497*A
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English (en)
Inventor
Theodore M Krizman
Clayton M Emmons
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.)
Adams and Westlake Co
Original Assignee
Adams and Westlake Co
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 Adams and Westlake Co filed Critical Adams and Westlake Co
Application granted granted Critical
Publication of US3533025A publication Critical patent/US3533025A/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
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H51/00—Electromagnetic relays
    • H01H51/28—Relays having both armature and contacts within a sealed casing outside which the operating coil is located, e.g. contact carried by a magnetic leaf spring or reed
    • H01H51/284—Polarised relays

Definitions

  • FIG. 3 is a view of a portion of the relay illustrated in FIGS. 1 and 2 and partly insection to illustrate the relation of the relay armature and contact faces of the pole pieces of the relay;
  • FIG. 17 is a view, partially in section, of the relay illustrated in FIGS. 15 and 16 and illustrating the relation between the armature, contact faces of the pole pieces and a strip of low reluctance material utilized in the relay.
  • a body of mercury may be introduced into the envelope during the manufacturing process, and, through capillary action, the armature and the contacts of the pole pieces are kept wetted with mercury.
  • the armature and portions of the pole pieces within the envelope may have special configurations to enhance the performance, reliability and operating sensitivity of the relay.
  • the envelope may be gas filled, if desired. Switches as thus described are known to the art and are discussed in a number of patents and publications, including US. Pat.
  • the cross-pieces 27a and 27b are the same material as the rod 27.
  • An electrical operating coil 30 is wound about the rod 27 and again, as may be noted in FIG. 7, is within the outline of the glass envelopes 11 of the two switches.
  • permanent magnet structures may again be associated with the pole pieces 16 and 17 of the switches.
  • a permanent magnet 31 has insulation 32 disposed around the magnet and is positioned between the pole pieces of the pair of switches. The insulation of the magnet may be bonded to or otherwise aflixed to the pole pieces so as to hold the magnet in position.
  • the end of the low reluctance rod need not be extended between the pole pieces as long as it is magnetically coupled to the pole pieces. It may be adjacent to the pole pieces or in abutting relation with electrical insulation between the pole pieces and the end of the rod.
  • 1, 2 and 3 is positioned so that one leg 39 is in contact with the exposed armature stem 34 and fixed thereto while the other leg 40 extends between the pole pieces 36 which are the normally open contacts of the relay.
  • the extreme end of the leg 40 is terminated well short of the pole pieces 35 so that the magnetic coupling effect from the core 38 is much stronger with respect to the pole pieces 36 than it is with respect to the normally closed pieces 35.
  • Insulation 40a surrounds the end 40 to electrically insulate it from the pole pieces 36.
  • the pole pieces 36 may be made longer than the pole pieces 35 so that the magnetic interaction exerted by the pole pieces in the presence of magnetic flux imposed by the operating coil of the relay is stronger with respect to the pole pieces 36.
  • FIGS. 13 and 14 illustrate variant forms of the invention.
  • the relay construction is identical to that described for FIGS. 4 and 5 except that the pair of magnets 24a and 25a with insulation 26a therebetween are positioned on the side of the pole pieces 16 and 17 opposite to that illustrated in FIGS. 4 and 5 and bonded to the pole pieces.
  • the operation of the relay constructions in FIGS. 13 and 14 is identical to that described with respect to FIGS. 4 and 5.
  • the form illustrated in FIGS. 4 and 5 is preferred over that illustrated in FIGS. 13 and 14 because the magnet positioning in FIGS. 4 and 5 reduces the space requirements from the space requirements of the relay construction illustrated in FIGS. 13 and 14.
  • the leg 46 is embedded within the end of the glass envelope above the ceramic spacer 18 as will be appreciated from FIG. 17.
  • the form of the invention illustrated in FIGS. 15, 16 and 17 is somewhat more diificult to manufacture because of the need for placing the leg 46 between the pole pieces 16 and 17 in generally equally spaced relation and within the body of glass at that end of the envelope. Nonetheless,
  • the principles of the invention may be utilized with relays as described herein and with permanent magnets associated with the relays in such a manner as to make the relays either bistable or single side stable.
  • the principles of the invention are applicable to make-before-break (known as Form D) and break-before-make (known as Form C) relays.
  • Relays as herein described may be mercury wetted constructions as known to the art or may be nonmercury wetted if desired.
  • the glass envelopes may be filled with gas or left in a state of vacuum in accordance with desired operating characteristics.
  • the structure of claim 10 characterized by and including a plurality of similarly formed glass-like envelopes each having the said pole pieces and armatures and positioned in a spaced, generally parallel disposition, said material having a main portion with said coil positioned therearound between said envelopes, said one end portion of said material having branch connections with the armature stem of each envelope, said other end portion of said material having branch connections extending to positions between the pole pieces of each envelope.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Arc-Extinguishing Devices That Are Switches (AREA)
  • Electromagnets (AREA)
US795497*A 1969-01-31 1969-01-31 Flat pack relay Expired - Lifetime US3533025A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79549769A 1969-01-31 1969-01-31

Publications (1)

Publication Number Publication Date
US3533025A true US3533025A (en) 1970-10-06

Family

ID=25165665

Family Applications (1)

Application Number Title Priority Date Filing Date
US795497*A Expired - Lifetime US3533025A (en) 1969-01-31 1969-01-31 Flat pack relay

Country Status (4)

Country Link
US (1) US3533025A (enrdf_load_stackoverflow)
BE (1) BE736055A (enrdf_load_stackoverflow)
FR (1) FR2029737A1 (enrdf_load_stackoverflow)
GB (1) GB1269825A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668576A (en) * 1970-11-05 1972-06-06 Adams & Westlake Co Flat pack relay with plural operating coils
US20210313132A1 (en) * 2018-08-02 2021-10-07 Willow Technologies Limited A contactor

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2394886A1 (fr) * 1977-06-17 1979-01-12 Orega Circuits & Commutation Relais electrique a contacts scelles, a sensibilite reglable
FR2502392A1 (fr) * 1981-03-20 1982-09-24 Socapex Relais electromagnetique a position de fonctionnement indifferente

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577602A (en) * 1947-10-01 1951-12-04 Bell Telephone Labor Inc Method for adjusting the sensitivity of contact devices
US3005072A (en) * 1959-10-22 1961-10-17 Bell Telephone Labor Inc Electrically controlled switching device
US3048677A (en) * 1961-03-31 1962-08-07 Bell Telephone Labor Inc Switching device
US3227839A (en) * 1964-01-24 1966-01-04 Gordos Corp And gate devices

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2577602A (en) * 1947-10-01 1951-12-04 Bell Telephone Labor Inc Method for adjusting the sensitivity of contact devices
US3005072A (en) * 1959-10-22 1961-10-17 Bell Telephone Labor Inc Electrically controlled switching device
US3048677A (en) * 1961-03-31 1962-08-07 Bell Telephone Labor Inc Switching device
US3227839A (en) * 1964-01-24 1966-01-04 Gordos Corp And gate devices

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3668576A (en) * 1970-11-05 1972-06-06 Adams & Westlake Co Flat pack relay with plural operating coils
US20210313132A1 (en) * 2018-08-02 2021-10-07 Willow Technologies Limited A contactor
US11869735B2 (en) * 2018-08-02 2024-01-09 Solid State Plc Contactor

Also Published As

Publication number Publication date
BE736055A (enrdf_load_stackoverflow) 1969-12-16
GB1269825A (en) 1972-04-06
FR2029737A1 (enrdf_load_stackoverflow) 1970-10-23

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