WO2000070914A3 - Shielded magnetic reed switch - Google Patents

Shielded magnetic reed switch Download PDF

Info

Publication number
WO2000070914A3
WO2000070914A3 PCT/US2000/008997 US0008997W WO0070914A3 WO 2000070914 A3 WO2000070914 A3 WO 2000070914A3 US 0008997 W US0008997 W US 0008997W WO 0070914 A3 WO0070914 A3 WO 0070914A3
Authority
WO
WIPO (PCT)
Prior art keywords
reed switch
magnetic reed
magnetic
ferrous metal
metal housing
Prior art date
Application number
PCT/US2000/008997
Other languages
French (fr)
Other versions
WO2000070914A2 (en
Inventor
David Tyler Posey
Raymond Lee Morgan
Original Assignee
Hermetic Switch, Inc.
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
Priority claimed from US09/313,456 external-priority patent/US6126647A/en
Application filed by Hermetic Switch, Inc. filed Critical Hermetic Switch, Inc.
Priority to EP00920144A priority Critical patent/EP1579729A2/en
Priority to AU40726/00A priority patent/AU4072600A/en
Priority to CA002371495A priority patent/CA2371495A1/en
Priority to JP2000619240A priority patent/JP2003526181A/en
Priority to MXPA01011922A priority patent/MXPA01011922A/en
Publication of WO2000070914A2 publication Critical patent/WO2000070914A2/en
Publication of WO2000070914A3 publication Critical patent/WO2000070914A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M25/00—Catheters; Hollow probes
    • A61M25/01—Introducing, guiding, advancing, emplacing or holding catheters
    • A61M25/0105—Steering means as part of the catheter or advancing means; Markers for positioning
    • A61M25/0127—Magnetic means; Magnetic markers
    • 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
    • H01H36/0013—Permanent magnet actuating reed switches characterised by the co-operation between reed switch and permanent magnet; Magnetic circuits
    • 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
    • H01H36/0033—Mountings; Housings; Connections

Abstract

A shielded magnetic reed switch provides a magnetic reed switch disposed within a ferrous metal housing so that the ferrous metal housing shields the magnetic reed switch from magnetic flux. The shielded magnetic reed switch of the present invention remains unactuated until the ferrous metal housing is fully saturated and the magnetic flux required to actuate the magnetic reed switch is available within the ferrous metal housing. The present invention further provides a sensor for detecting the presence of an approaching magnetic field source at a predetermined distance between the shielded magnetic reed switch and the approaching magnetic field source.
PCT/US2000/008997 1999-05-17 2000-04-05 Shielded magnetic reed switch WO2000070914A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP00920144A EP1579729A2 (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch
AU40726/00A AU4072600A (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch
CA002371495A CA2371495A1 (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch
JP2000619240A JP2003526181A (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch
MXPA01011922A MXPA01011922A (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/313,456 US6126647A (en) 1999-05-17 1999-05-17 Magnetically guided catheter with sensor
US09/313,456 1999-05-17
US51805800A 2000-03-02 2000-03-02
US09/518,058 2000-03-02

Publications (2)

Publication Number Publication Date
WO2000070914A2 WO2000070914A2 (en) 2000-11-23
WO2000070914A3 true WO2000070914A3 (en) 2009-10-15

Family

ID=26978890

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2000/008997 WO2000070914A2 (en) 1999-05-17 2000-04-05 Shielded magnetic reed switch

Country Status (6)

Country Link
EP (1) EP1579729A2 (en)
JP (1) JP2003526181A (en)
AU (1) AU4072600A (en)
CA (1) CA2371495A1 (en)
MX (1) MXPA01011922A (en)
WO (1) WO2000070914A2 (en)

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3406267A (en) * 1966-08-23 1968-10-15 Webb Co Jervis B Proximity switch having a magnetic shield
DE3410858A1 (en) * 1984-03-23 1985-10-03 Alfred Teves Gmbh, 6000 Frankfurt ELECTRIC SWITCH
US5668533A (en) * 1995-06-07 1997-09-16 Securitron Magnalock Corporation High security balanced-type, magnetically-actuated proximity switch system

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of EP1579729A4 *

Also Published As

Publication number Publication date
CA2371495A1 (en) 2000-11-23
AU4072600A (en) 2000-12-05
WO2000070914A2 (en) 2000-11-23
EP1579729A4 (en) 2005-09-28
MXPA01011922A (en) 2003-09-04
EP1579729A2 (en) 2005-09-28
JP2003526181A (en) 2003-09-02

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