GB2187890B - Positional sensor - Google Patents

Positional sensor

Info

Publication number
GB2187890B
GB2187890B GB8706048A GB8706048A GB2187890B GB 2187890 B GB2187890 B GB 2187890B GB 8706048 A GB8706048 A GB 8706048A GB 8706048 A GB8706048 A GB 8706048A GB 2187890 B GB2187890 B GB 2187890B
Authority
GB
United Kingdom
Prior art keywords
positional sensor
positional
sensor
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
GB8706048A
Other versions
GB2187890A (en
GB8706048D0 (en
Inventor
Neil Margerison Howarth
Roy Alan Schofield
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.)
Shorrock Security Systems Ltd
Original Assignee
Shorrock Security Systems 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 Shorrock Security Systems Ltd filed Critical Shorrock Security Systems Ltd
Publication of GB8706048D0 publication Critical patent/GB8706048D0/en
Publication of GB2187890A publication Critical patent/GB2187890A/en
Application granted granted Critical
Publication of GB2187890B publication Critical patent/GB2187890B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B13/00—Burglar, theft or intruder alarms
    • G08B13/02—Mechanical actuation
    • G08B13/08—Mechanical actuation by opening, e.g. of door, of window, of drawer, of shutter, of curtain, of blind

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Burglar Alarm Systems (AREA)
  • Geophysics And Detection Of Objects (AREA)
GB8706048A 1986-03-13 1987-03-13 Positional sensor Expired - Lifetime GB2187890B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB868606271A GB8606271D0 (en) 1986-03-13 1986-03-13 Positional sensor

Publications (3)

Publication Number Publication Date
GB8706048D0 GB8706048D0 (en) 1987-04-15
GB2187890A GB2187890A (en) 1987-09-16
GB2187890B true GB2187890B (en) 1990-01-31

Family

ID=10594568

Family Applications (3)

Application Number Title Priority Date Filing Date
GB868606271A Pending GB8606271D0 (en) 1986-03-13 1986-03-13 Positional sensor
GB8706047A Expired GB2187871B (en) 1986-03-13 1987-03-13 Positional sensor
GB8706048A Expired - Lifetime GB2187890B (en) 1986-03-13 1987-03-13 Positional sensor

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB868606271A Pending GB8606271D0 (en) 1986-03-13 1986-03-13 Positional sensor
GB8706047A Expired GB2187871B (en) 1986-03-13 1987-03-13 Positional sensor

Country Status (1)

Country Link
GB (3) GB8606271D0 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2253084A (en) * 1991-02-19 1992-08-26 Chiu Yia Kong Burglar alarm
GB2270981A (en) * 1992-08-12 1994-03-30 Mini Agriculture & Fisheries Locating magnetically tagged concealed equipment.
EP0757339B1 (en) * 1995-07-29 2001-01-10 Siemens Building Technologies AG Intrusion alarm
US5777552A (en) * 1995-08-02 1998-07-07 Sentrol, Inc. Curtain door alarm
CN108073134A (en) * 2016-11-18 2018-05-25 中国科学院沈阳计算技术研究所有限公司 A kind of alarm method based on digital control system functional safety threshold value

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614683A (en) * 1968-10-29 1971-10-19 Western Electric Co Multiple-contact glass-sealed dry reed switching device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3614683A (en) * 1968-10-29 1971-10-19 Western Electric Co Multiple-contact glass-sealed dry reed switching device

Also Published As

Publication number Publication date
GB8706047D0 (en) 1987-04-15
GB2187871B (en) 1989-11-15
GB2187890A (en) 1987-09-16
GB8706048D0 (en) 1987-04-15
GB8606271D0 (en) 1986-04-16
GB2187871A (en) 1987-09-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee