GB1110487A - Environment condition proof limit switch - Google Patents

Environment condition proof limit switch

Info

Publication number
GB1110487A
GB1110487A GB33205/66A GB3320566A GB1110487A GB 1110487 A GB1110487 A GB 1110487A GB 33205/66 A GB33205/66 A GB 33205/66A GB 3320566 A GB3320566 A GB 3320566A GB 1110487 A GB1110487 A GB 1110487A
Authority
GB
United Kingdom
Prior art keywords
arm
rocker
lever
magnet
limit switch
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
GB33205/66A
Inventor
Leander Jackson Bulliet
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.)
Babcock and Wilcox Co
Original Assignee
Babcock and Wilcox 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 Babcock and Wilcox Co filed Critical Babcock and Wilcox Co
Publication of GB1110487A publication Critical patent/GB1110487A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H36/00—Switches actuated by change of magnetic field or of electric field, e.g. by change of relative position of magnet and switch, by shielding
    • H01H36/0006—Permanent magnet actuating reed switches
    • H01H36/0046—Limit switches, also fail-safe operation or anti-tamper considerations
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H21/00—Switches operated by an operating part in the form of a pivotable member acted upon directly by a solid body, e.g. by a hand
    • H01H21/02—Details
    • H01H21/18—Movable parts; Contacts mounted thereon
    • H01H21/22—Operating parts, e.g. handle
    • H01H21/24—Operating parts, e.g. handle biased to return to normal position upon removal of operating force
    • H01H21/28—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift
    • H01H21/285—Operating parts, e.g. handle biased to return to normal position upon removal of operating force adapted for actuation at a limit or other predetermined position in the path of a body, the relative movement of switch and body being primarily for a purpose other than the actuation of the switch, e.g. door switch, limit switch, floor-levelling switch of a lift having an operating arm actuated by the movement of the body and mounted on an axis converting its rotating movement into a rectilinear switch activating movement
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
    • H01H9/547—Combinations of mechanical switches and static switches, the latter being controlled by the former

Landscapes

  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

1,110,487. Magnetic switches. BABCOCK & WILCOX CO. 22 July, 1966 [20 Aug., 1965], No. 33205/66. Heading HIN. A limit switch has a movable magnet 10 controlling sealed contact units 2, 12 encapsulated in a block 14 having terminals 16, 18, 20, 22 set in recesses with channels 36, 38, 40, 40 in which external connections are sealed by a compound such as silicone rubber cement. The magnet 10 is mounted on a lever 96 on a shaft 84 having at its other end a rocker 82 acted upon by a roller 80 in a spring-biased slider 88 forming a snap-action drive for the lever 96. The slider 88 moves in the end of a driver arm 56 on an actuating shaft 54 fitted to one end of a position sensing arm 58. Overtravel spring means (not shown) is incorporated in the hub of the arm 56. Trigger members 78, 104 hold the rocker 82 after the roller 80 has passed the dead-centre position until the arm 56 releases the trigger to allow the rocker 82 to snap-over to its other position and move the lever 96 with its magnet 10. The return spring 74 may be omitted and the switching capacity may be increased by Triac amplifiers which are also embedded in the block 14.
GB33205/66A 1965-08-20 1966-07-22 Environment condition proof limit switch Expired GB1110487A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US481239A US3364318A (en) 1965-08-20 1965-08-20 Environment-proof limit switch

Publications (1)

Publication Number Publication Date
GB1110487A true GB1110487A (en) 1968-04-18

Family

ID=23911182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB33205/66A Expired GB1110487A (en) 1965-08-20 1966-07-22 Environment condition proof limit switch

Country Status (3)

Country Link
US (1) US3364318A (en)
DE (1) DE1590142B1 (en)
GB (1) GB1110487A (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3527962A (en) * 1966-06-07 1970-09-08 Energy Conversion Devices Inc Machine tool limit switch
US3451020A (en) * 1966-12-05 1969-06-17 Lear Siegler Inc Switch assembly for use in oxygen environment
US3504235A (en) * 1968-11-19 1970-03-31 Gen Electric Solid state limit switch
US3578933A (en) * 1969-09-12 1971-05-18 Allen Bradley Co Corrosion-resistant enclosure
US3656005A (en) * 1970-07-15 1972-04-11 Gen Electric Two circuit solid state limit switch (1no and 1nc)
US3805059A (en) * 1972-01-10 1974-04-16 Princeton Electro Dynamics Inc Electrical switch focused in combustible atmospheres
US4012611A (en) * 1975-03-03 1977-03-15 Cega, Inc. Inertia switch for anti-intrusion sensing systems
CA1134924A (en) * 1979-11-13 1982-11-02 Richard C. Maybee Burglar alarm
KR930006769A (en) * 1991-09-14 1993-04-21 다테이시 요시오 Limit switch
CN102956393A (en) * 2011-08-24 2013-03-06 欧姆龙株式会社 Switching device
CN105047462A (en) * 2015-08-27 2015-11-11 成都科盛石油科技有限公司 Control structure for prolonging service life and improving connection stability
CN113368591A (en) * 2021-06-07 2021-09-10 泰州市宏泰电力设备有限公司 Adjusting device of vacuum oil filter power

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2795678A (en) * 1953-06-16 1957-06-11 Stevens Mfg Co Inc Sealed electrical switches
US3081385A (en) * 1959-08-18 1963-03-12 Birmingham Small Arms Co Ltd Electric switches
DE1169000B (en) * 1959-12-17 1964-04-30 Siemens Ag Electrical push button switch, in particular limit switch
NL137795C (en) * 1961-12-22
US3198902A (en) * 1962-05-28 1965-08-03 Jr Emile C Deshautreaux Proximity magnetic reed switch assembly
US3247342A (en) * 1963-01-18 1966-04-19 Vivian L Ott Permanent magnetic switch
FR1582109A (en) * 1968-06-12 1969-09-26

Also Published As

Publication number Publication date
DE1590142B1 (en) 1971-07-15
US3364318A (en) 1968-01-16

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