CA881749A - Alarm apparatus - Google Patents

Alarm apparatus

Info

Publication number
CA881749A
CA881749A CA881749A CA48571A CA881749A CA 881749 A CA881749 A CA 881749A CA 881749 A CA881749 A CA 881749A CA 48571 A CA48571 A CA 48571A CA 881749 A CA881749 A CA 881749A
Authority
CA
Canada
Prior art keywords
alarm apparatus
alarm
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
Application number
CA881749A
Other versions
CA48571S (en
Inventor
Litman Charles
N. Lehna Earl
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to CA881749A priority Critical patent/CA881749A/en
Priority to US886176A priority patent/US3653021A/en
Application granted granted Critical
Publication of CA881749A publication Critical patent/CA881749A/en
Expired 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
    • G08B13/18—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength
    • G08B13/181—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems
    • G08B13/183—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier
    • G08B13/184—Actuation by interference with heat, light, or radiation of shorter wavelength; Actuation by intruding sources of heat, light, or radiation of shorter wavelength using active radiation detection systems by interruption of a radiation beam or barrier using radiation reflectors
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B17/00—Fire alarms; Alarms responsive to explosion
    • G08B17/12—Actuation by presence of radiation or particles, e.g. of infrared radiation or of ions

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Burglar Alarm Systems (AREA)
CA881749A 1969-04-14 1969-04-14 Alarm apparatus Expired CA881749A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CA881749A CA881749A (en) 1969-04-14 1969-04-14 Alarm apparatus
US886176A US3653021A (en) 1969-04-14 1969-12-18 Universally adjustable and focusable alarm apparatus and electric circuitry therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CA881749A CA881749A (en) 1969-04-14 1969-04-14 Alarm apparatus

Publications (1)

Publication Number Publication Date
CA881749A true CA881749A (en) 1971-09-21

Family

ID=4085135

Family Applications (1)

Application Number Title Priority Date Filing Date
CA881749A Expired CA881749A (en) 1969-04-14 1969-04-14 Alarm apparatus

Country Status (2)

Country Link
US (1) US3653021A (en)
CA (1) CA881749A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345688A1 (en) * 1976-03-24 1977-10-21 Svenska Rotor Maskiner Ab HEAT EXCHANGER CONTAINING A HOUSING OR SUPPORT FOR LENS FOR DETECTION OF INFRARED RAYS
EP0012280A1 (en) * 1978-12-06 1980-06-25 Siemens Aktiengesellschaft Tamperproof intrusion detector

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142227A (en) * 1977-05-23 1979-02-27 Gulton Industries, Inc. Combination passenger reading light and air ventilator
US4173717A (en) * 1978-01-27 1979-11-06 Detection Systems Inc. Optical assembly
US4224608A (en) * 1978-11-13 1980-09-23 Detection Systems, Inc. Single terminal detection system
US4331868A (en) * 1980-02-14 1982-05-25 Mash William R Mounting system for optical controls
US4470043A (en) * 1982-03-01 1984-09-04 Squibb Vitatek Inc. Non-fade bouncing ball display
US4516115A (en) * 1982-04-16 1985-05-07 Cerberus Ag Intrusion detection system
DE3222954C2 (en) * 1982-06-18 1986-01-23 Erwin Sick Gmbh Optik-Elektronik, 7808 Waldkirch Light barrier unit
US5377087A (en) * 1992-01-15 1994-12-27 Gulton Industries, Inc. Passenger reading light
DE9201889U1 (en) * 1992-02-14 1992-07-09 Brück, Friedrich, 51789 Lindlar motion detector
US5467228A (en) * 1994-06-15 1995-11-14 Taiwan Line Tek Electronic Co., Ltd. Light control device
US5780854A (en) * 1996-01-05 1998-07-14 Lin; Edward Structure for an infrared photoelectric device
US5823660A (en) * 1996-03-05 1998-10-20 Hsu; Yuan-Shun Automatic lighting control device for a decorative light string
JP3896406B2 (en) * 2002-04-11 2007-03-22 オプテックス株式会社 Security sensor device
US7800049B2 (en) * 2005-08-22 2010-09-21 Leviton Manufacuturing Co., Inc. Adjustable low voltage occupancy sensor
US7855548B2 (en) * 2006-03-29 2010-12-21 Levinton Manufacturing Co., Inc. Low labor enclosure assembly
US20070230142A1 (en) * 2006-03-29 2007-10-04 Engel John B Zero parts strain relief
US7800498B2 (en) * 2006-03-29 2010-09-21 Leviton Manufacturing Co., Inc. Occupancy sensor powerbase

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US243780A (en) * 1881-07-05 Vessel and attachments thereto for submarine illumination
US1992199A (en) * 1932-11-07 1935-02-26 Illuminating Engineering Co Light source
US2099868A (en) * 1935-01-26 1937-11-23 Sing Lang Jung Automatic annunciator
US2128461A (en) * 1936-06-15 1938-08-30 Corcoran Brown Lamp Company Adjustable lamp
US2286448A (en) * 1940-04-24 1942-06-16 Nash Kelvinator Corp Lamp mount
US2890351A (en) * 1956-03-06 1959-06-09 Stewart R Tongret Adjustable housing for radiation devices
US2918585A (en) * 1958-04-11 1959-12-22 Edward B Farmer Photoelectric mount
US3390388A (en) * 1965-03-24 1968-06-25 Arrowhead Entpr Inc Intrusion detector

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2345688A1 (en) * 1976-03-24 1977-10-21 Svenska Rotor Maskiner Ab HEAT EXCHANGER CONTAINING A HOUSING OR SUPPORT FOR LENS FOR DETECTION OF INFRARED RAYS
EP0012280A1 (en) * 1978-12-06 1980-06-25 Siemens Aktiengesellschaft Tamperproof intrusion detector

Also Published As

Publication number Publication date
US3653021A (en) 1972-03-28

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