DE69229352D1 - MAGNETIC CLOSURE - Google Patents

MAGNETIC CLOSURE

Info

Publication number
DE69229352D1
DE69229352D1 DE69229352T DE69229352T DE69229352D1 DE 69229352 D1 DE69229352 D1 DE 69229352D1 DE 69229352 T DE69229352 T DE 69229352T DE 69229352 T DE69229352 T DE 69229352T DE 69229352 D1 DE69229352 D1 DE 69229352D1
Authority
DE
Germany
Prior art keywords
magnet
magnetic
solid non
attract
protrusion
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 - Fee Related
Application number
DE69229352T
Other languages
German (de)
Other versions
DE69229352T2 (en
Inventor
Robert Riceman
Mitchell Medina
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.)
International Patent Holdings Ltd
Original Assignee
International Patent Holdings 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
Priority claimed from US07/944,711 external-priority patent/US5251362A/en
Priority claimed from US07/972,033 external-priority patent/US5400479A/en
Priority claimed from US07/971,609 external-priority patent/US5448806A/en
Application filed by International Patent Holdings Ltd filed Critical International Patent Holdings Ltd
Publication of DE69229352D1 publication Critical patent/DE69229352D1/en
Application granted granted Critical
Publication of DE69229352T2 publication Critical patent/DE69229352T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F7/00—Magnets
    • H01F7/02—Permanent magnets [PM]
    • H01F7/0231—Magnetic circuits with PM for power or force generation
    • H01F7/0252—PM holding devices
    • H01F7/0263—Closures, bags, bands, engagement devices with male and female parts

Landscapes

  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
  • Burglar Alarm Systems (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Buckles (AREA)
  • Valve Device For Special Equipments (AREA)
  • Lock And Its Accessories (AREA)
  • Permanent Field Magnets Of Synchronous Machinery (AREA)
  • Power-Operated Mechanisms For Wings (AREA)
  • Walking Sticks, Umbrellas, And Fans (AREA)
  • Finger-Pressure Massage (AREA)
  • Telephone Function (AREA)

Abstract

A magnetic latch includes a first member (301) having a protrusion and a second member (305) engaging the protrusion to prevent the first member (301) and the second member (305) from sliding relatively to one another. The second member includes a first magnet (230) to attract the first member (301) and a first solid non-magnetic member (319a) located inside a cavity of the first magnet (230) to enhance attraction between the first member (301) and the second member (305). The second member (305) can be provided with a backing plate (315a) to facilitate a magnetic flux path from the magnet to the magnet aperture. The second member (305) can also include a second magent to attract the first member (301) and a second solid non-magnetic member located between the first magnet (230) and the second magnet. A third solid non-magnetic member can be provided on the outer periphery of the magnets. This design provides a latch with stronger holding power.
DE69229352T 1992-09-11 1992-12-04 MAGNETIC CAP Expired - Fee Related DE69229352T2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US07/944,711 US5251362A (en) 1991-05-24 1992-09-11 Magnetic latch
US07/972,033 US5400479A (en) 1991-05-24 1992-11-06 Magnetic latch
US07/971,609 US5448806A (en) 1991-05-24 1992-11-06 Magnetic latch
PCT/US1992/010446 WO1994006319A1 (en) 1992-09-11 1992-12-04 Magnetic latch

Publications (2)

Publication Number Publication Date
DE69229352D1 true DE69229352D1 (en) 1999-07-08
DE69229352T2 DE69229352T2 (en) 2000-02-03

Family

ID=27420711

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69229352T Expired - Fee Related DE69229352T2 (en) 1992-09-11 1992-12-04 MAGNETIC CAP

Country Status (6)

Country Link
EP (1) EP0615414B1 (en)
AT (1) ATE180636T1 (en)
CA (1) CA2123308C (en)
DE (1) DE69229352T2 (en)
ES (1) ES2136121T3 (en)
WO (1) WO1994006319A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2307107B (en) * 1995-11-08 2000-04-12 Nokia Mobile Phones Ltd A radio device
EP0773632B1 (en) * 1995-11-08 2004-01-28 Nokia Corporation Radio transmitting and receiving device
DE29606994U1 (en) * 1996-04-21 1997-08-14 Dictator Technik Dr. Wolfram Schneider & Co Verwaltungs- und Beteiligungsgesellschaft, 86356 Neusäß Holding magnet
IT1283151B1 (en) * 1996-07-12 1998-04-07 Minu Spa MAGNETIC CLOSURE WITH COVERING IN NON-FERROMAGNETIC MATERIAL, FOR BAGS, CLOTHING AND SIMILAR ITEMS.
DE29618217U1 (en) * 1996-10-21 1996-12-19 Brugger GmbH, 78739 Hardt Holding magnet
USD805882S1 (en) * 2014-01-02 2017-12-26 Jason Eric Berry Magnetic fastener
US11952826B2 (en) 2022-08-29 2024-04-09 Cortex, LLC Magnetic closure bumpers
US11988027B2 (en) * 2022-08-29 2024-05-21 Cortex, LLC Magnetic door stop and door holder
US11982113B2 (en) 2022-08-30 2024-05-14 Cortex, LLC Magnetic door closure

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58105508A (en) * 1981-12-18 1983-06-23 Taamo:Kk Engaging device
JPS58121610A (en) * 1982-10-05 1983-07-20 Taamo:Kk Connector
JPS59111306A (en) * 1982-12-17 1984-06-27 Taamo:Kk Engaging fitting
JPS61141101A (en) * 1984-12-14 1986-06-28 Taamo:Kk Stud using permanent magnet
US4754532A (en) * 1987-02-24 1988-07-05 Thomson Richard E Adjustable quick release magnetic holding assembly

Also Published As

Publication number Publication date
ES2136121T3 (en) 1999-11-16
WO1994006319A1 (en) 1994-03-31
EP0615414B1 (en) 1999-06-02
CA2123308A1 (en) 1994-03-31
EP0615414A4 (en) 1995-03-08
DE69229352T2 (en) 2000-02-03
ATE180636T1 (en) 1999-06-15
EP0615414A1 (en) 1994-09-21
CA2123308C (en) 2003-03-25

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee