HK1010806A1 - Safety interlock for overhead projector - Google Patents

Safety interlock for overhead projector

Info

Publication number
HK1010806A1
HK1010806A1 HK98111504A HK98111504A HK1010806A1 HK 1010806 A1 HK1010806 A1 HK 1010806A1 HK 98111504 A HK98111504 A HK 98111504A HK 98111504 A HK98111504 A HK 98111504A HK 1010806 A1 HK1010806 A1 HK 1010806A1
Authority
HK
Hong Kong
Prior art keywords
safety interlock
overhead projector
projector
overhead
interlock
Prior art date
Application number
HK98111504A
Other languages
English (en)
Inventor
David Scott Freeman
Original Assignee
Minnesota Mining & Mfg
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 Minnesota Mining & Mfg filed Critical Minnesota Mining & Mfg
Publication of HK1010806A1 publication Critical patent/HK1010806A1/xx

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/20—Interlocking, locking, or latching mechanisms
    • H01H9/22—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts
    • H01H9/226—Interlocking, locking, or latching mechanisms for interlocking between casing, cover, or protective shutter and mechanism for operating contacts the casing containing electrical equipment other than and operated by the switch
HK98111504A 1994-02-08 1998-10-22 Safety interlock for overhead projector HK1010806A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/193,269 US5410112A (en) 1994-02-08 1994-02-08 Safety interlock for overhead projector
PCT/US1995/001414 WO1995022156A1 (en) 1994-02-08 1995-02-02 Safety interlock for overhead projector

Publications (1)

Publication Number Publication Date
HK1010806A1 true HK1010806A1 (en) 1999-06-25

Family

ID=22712924

Family Applications (1)

Application Number Title Priority Date Filing Date
HK98111504A HK1010806A1 (en) 1994-02-08 1998-10-22 Safety interlock for overhead projector

Country Status (9)

Country Link
US (1) US5410112A (xx)
EP (1) EP0744078B1 (xx)
JP (1) JP3033725U (xx)
KR (1) KR200243953Y1 (xx)
CN (1) CN1059749C (xx)
DE (1) DE69502182T2 (xx)
ES (1) ES2116075T3 (xx)
HK (1) HK1010806A1 (xx)
WO (1) WO1995022156A1 (xx)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6190025B1 (en) * 1998-09-14 2001-02-20 Insight Technology, Inc. Multi-mode illumination device with security block
US6424097B1 (en) * 2000-05-12 2002-07-23 Infocus Corporation Projection lamp safety interlock apparatus and method
KR20010109608A (ko) * 2000-05-31 2001-12-12 이형도 미니 네크 편향 요크
US7329024B2 (en) * 2003-09-22 2008-02-12 Permlight Products, Inc. Lighting apparatus
US20080040887A1 (en) * 2006-08-16 2008-02-21 Dickerson Harry L Friction hinge for electronic apparatus
TWI564750B (zh) * 2014-03-14 2017-01-01 緯創資通股份有限公司 具有安全機制的開關模組及具有其開關模組的機殼

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3632917A (en) * 1965-06-08 1972-01-04 Westinghouse Electric Corp Electric switchgear with cover and switch interlock means and handle-latching means
US3428766A (en) * 1966-12-01 1969-02-18 Gen Electric Switch mechanism for cabinet
US4264793A (en) * 1979-05-24 1981-04-28 Pitney Bowes Inc. Machine door closure safety control apparatus
USRE34396E (en) * 1984-08-16 1993-10-05 Helmut Letzel Safety interlock switching device for protecting equipment
US4806710A (en) * 1987-09-10 1989-02-21 S&C Electric Company Mechanical door interlock for electrical equipment enclosure
US4885436A (en) * 1988-08-29 1989-12-05 Tandem Computers Incorporated Electronic module interlock and extraction mechanism

Also Published As

Publication number Publication date
KR960039093U (ko) 1996-12-18
JP3033725U (ja) 1997-02-07
ES2116075T3 (es) 1998-07-01
CN1139991A (zh) 1997-01-08
EP0744078A1 (en) 1996-11-27
DE69502182D1 (de) 1998-05-28
US5410112A (en) 1995-04-25
KR200243953Y1 (ko) 2001-11-30
WO1995022156A1 (en) 1995-08-17
EP0744078B1 (en) 1998-04-22
DE69502182T2 (de) 1998-11-19
CN1059749C (zh) 2000-12-20

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)