GB630450A - Improvements in and relating to electric switching devices for making up into resilient alarm mats - Google Patents
Improvements in and relating to electric switching devices for making up into resilient alarm matsInfo
- Publication number
- GB630450A GB630450A GB827647A GB827647A GB630450A GB 630450 A GB630450 A GB 630450A GB 827647 A GB827647 A GB 827647A GB 827647 A GB827647 A GB 827647A GB 630450 A GB630450 A GB 630450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- strips
- resilient
- switching devices
- relating
- making
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H3/00—Mechanisms for operating contacts
- H01H3/02—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch
- H01H3/14—Operating parts, i.e. for operating driving mechanism by a mechanical force external to the switch adapted for operation by a part of the human body other than the hand, e.g. by foot
- H01H3/141—Cushion or mat switches
Landscapes
- Push-Button Switches (AREA)
Abstract
630,450. Retractive switches. HAWKES, J. L., and BECKER, F. J. March 26, 1947, No. 8276. [Class 38(v)] [Also in Group XXXVIII] A mat comprises a thin insulating envelope 4, 17 containing switching devices 5 which close an alarm circuit when trodden upon. Each switch 5 has a lower metal strip 6 and an upper spring strip 7 separated at intervals by non-resilient insulators 8 and held together by rubber sleeves 11, 12. Rivet contacts 9 are carried by one or both. of the strips 6, 7. Rigid wires 13, 14 connected to one end of the lower and upper strips respectively are connected to the alarm circuit and also space the switches in the envelope, the other ends of the strips being connected by wires 15, 16. Instead of the insulators 8, the strips 6, 7 may be separated by common insulating strips parallel to the width of the mat.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB827647A GB630450A (en) | 1947-03-26 | 1947-03-26 | Improvements in and relating to electric switching devices for making up into resilient alarm mats |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB827647A GB630450A (en) | 1947-03-26 | 1947-03-26 | Improvements in and relating to electric switching devices for making up into resilient alarm mats |
Publications (1)
Publication Number | Publication Date |
---|---|
GB630450A true GB630450A (en) | 1949-10-13 |
Family
ID=9849388
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB827647A Expired GB630450A (en) | 1947-03-26 | 1947-03-26 | Improvements in and relating to electric switching devices for making up into resilient alarm mats |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB630450A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5629675A (en) * | 1992-12-16 | 1997-05-13 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Vehicle intruder detection system |
GB2328318A (en) * | 1997-08-14 | 1999-02-17 | Draftex Ind Ltd | Force-responsive sensor |
US6281455B1 (en) | 1997-08-14 | 2001-08-28 | Draftex Industries Limited | Force-responsive detectors and systems |
-
1947
- 1947-03-26 GB GB827647A patent/GB630450A/en not_active Expired
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5629675A (en) * | 1992-12-16 | 1997-05-13 | The Secretary Of State For Defence In Her Britannic Majesty's Government Of The United Kingdom Of Great Britain And Northern Ireland | Vehicle intruder detection system |
GB2328318A (en) * | 1997-08-14 | 1999-02-17 | Draftex Ind Ltd | Force-responsive sensor |
US6281455B1 (en) | 1997-08-14 | 2001-08-28 | Draftex Industries Limited | Force-responsive detectors and systems |
GB2328318B (en) * | 1997-08-14 | 2001-12-19 | Draftex Ind Ltd | Force-responsive detectors and systems |
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