GB998261A - Improvements in and relating to electric switches - Google Patents

Improvements in and relating to electric switches

Info

Publication number
GB998261A
GB998261A GB854/62A GB85462A GB998261A GB 998261 A GB998261 A GB 998261A GB 854/62 A GB854/62 A GB 854/62A GB 85462 A GB85462 A GB 85462A GB 998261 A GB998261 A GB 998261A
Authority
GB
United Kingdom
Prior art keywords
cavity
slug
switch
wall
inertia
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
GB854/62A
Inventor
Walter Wilson Hugh Clarke
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.)
INTERTIA SWITCH Ltd
Original Assignee
INTERTIA SWITCH Ltd
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 INTERTIA SWITCH Ltd filed Critical INTERTIA SWITCH Ltd
Priority to GB854/62A priority Critical patent/GB998261A/en
Priority to US248606A priority patent/US3177312A/en
Priority to DEJ22946A priority patent/DE1247445B/en
Priority to FR920922A priority patent/FR1345362A/en
Publication of GB998261A publication Critical patent/GB998261A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42C—AMMUNITION FUZES; ARMING OR SAFETY MEANS THEREFOR
    • F42C19/00—Details of fuzes
    • F42C19/06—Electric contact parts specially adapted for use with electric fuzes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/06—Switches operated by change of speed
    • H01H35/10—Centrifugal switches
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H35/00—Switches operated by change of a physical condition
    • H01H35/14—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch
    • H01H35/145—Switches operated by change of acceleration, e.g. by shock or vibration, inertia switch operated by a particular acceleration-time function
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H5/00—Snap-action arrangements, i.e. in which during a single opening operation or a single closing operation energy is first stored and then released to produce or assist the contact movement
    • H01H5/02—Energy stored by the attraction or repulsion of magnetic parts

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Switches That Are Operated By Magnetic Or Electric Fields (AREA)
  • Switches Operated By Changes In Physical Conditions (AREA)
  • Push-Button Switches (AREA)

Abstract

998,261. Inertia switches. INERTIA SWITCH Ltd. Dec. 24, 1962 [Jan. 9, 1962], No. 854/62. Heading H2B. In an inertia switch, which is actuated by the axial deceleration of a device, e.g. an artillery shell, which is also subjected to a centrifugal force, a slug 12 in a cavity 11 of a body 2 is retained against one wall of the cavity by a magnet 9 until the decelerating force is applied to the switch, whereupon the slug 12 moves towards the other wall of the cavity and closes an electric circuit by completing the circuit between a conducting layer 6 and a conducting annulus 3. Due to the centrifugal force the slug is held against the side wall of the cavity, i.e. the annulus 3, about which it hinges when deceleration occurs to close the switch. The force exerted by the magnet 9 may be varied by altering the thickness of a spacer 8. In another embodiment, Fig. 2 (not shown), the slug is retained against one wall of the cavity by a spring.
GB854/62A 1962-01-09 1962-01-09 Improvements in and relating to electric switches Expired GB998261A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB854/62A GB998261A (en) 1962-01-09 1962-01-09 Improvements in and relating to electric switches
US248606A US3177312A (en) 1962-01-09 1962-12-31 Slug type inertia switch
DEJ22946A DE1247445B (en) 1962-01-09 1962-12-31 Electrical inertia switch
FR920922A FR1345362A (en) 1962-01-09 1963-01-09 Electric switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB854/62A GB998261A (en) 1962-01-09 1962-01-09 Improvements in and relating to electric switches

Publications (1)

Publication Number Publication Date
GB998261A true GB998261A (en) 1965-07-14

Family

ID=9711646

Family Applications (1)

Application Number Title Priority Date Filing Date
GB854/62A Expired GB998261A (en) 1962-01-09 1962-01-09 Improvements in and relating to electric switches

Country Status (3)

Country Link
US (1) US3177312A (en)
DE (1) DE1247445B (en)
GB (1) GB998261A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3727209A (en) * 1970-10-13 1973-04-10 Westinghouse Electric Corp Digital accelerometer
US4594485A (en) * 1985-04-04 1986-06-10 Brown Jr Milton F Impact sensor
US4673777A (en) * 1986-06-09 1987-06-16 Motorola, Inc. Microbeam sensor contact damper
US4943690A (en) * 1989-03-06 1990-07-24 Fifth Dimension, Inc. Position insensitive shock sensor with closure delay

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2458478A (en) * 1943-04-10 1949-01-04 Riehard L Maneval Setback switch
GB763560A (en) * 1954-11-23 1956-12-12 Kelvin & Hughes Ltd Improvements in or relating to spring suspension devices
US2890303A (en) * 1956-11-09 1959-06-09 Gordon W Wholey Inertia switches
US2997557A (en) * 1959-04-06 1961-08-22 Gordon W Wholey Inertia switch

Also Published As

Publication number Publication date
US3177312A (en) 1965-04-06
DE1247445B (en) 1967-08-17

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