GB2220485B - Airflow detector - Google Patents

Airflow detector

Info

Publication number
GB2220485B
GB2220485B GB8908808A GB8908808A GB2220485B GB 2220485 B GB2220485 B GB 2220485B GB 8908808 A GB8908808 A GB 8908808A GB 8908808 A GB8908808 A GB 8908808A GB 2220485 B GB2220485 B GB 2220485B
Authority
GB
United Kingdom
Prior art keywords
airflow detector
airflow
detector
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
GB8908808A
Other versions
GB2220485A (en
GB8908808D0 (en
Inventor
Clive Robertson
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.)
ATOCHEM SENSORS Ltd
PENNWALT PIEZO FILM
Original Assignee
ATOCHEM SENSORS Ltd
PENNWALT PIEZO FILM
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 ATOCHEM SENSORS Ltd, PENNWALT PIEZO FILM filed Critical ATOCHEM SENSORS Ltd
Publication of GB8908808D0 publication Critical patent/GB8908808D0/en
Publication of GB2220485A publication Critical patent/GB2220485A/en
Application granted granted Critical
Publication of GB2220485B publication Critical patent/GB2220485B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P13/00—Indicating or recording presence, absence, or direction, of movement
    • G01P13/0006—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances
    • G01P13/0073—Indicating or recording presence, absence, or direction, of movement of fluids or of granulous or powder-like substances by using vibrations generated by the fluid
GB8908808A 1988-04-25 1989-04-19 Airflow detector Expired - Fee Related GB2220485B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB888809767A GB8809767D0 (en) 1988-04-25 1988-04-25 Airflow detector

Publications (3)

Publication Number Publication Date
GB8908808D0 GB8908808D0 (en) 1989-06-07
GB2220485A GB2220485A (en) 1990-01-10
GB2220485B true GB2220485B (en) 1992-05-20

Family

ID=10635813

Family Applications (2)

Application Number Title Priority Date Filing Date
GB888809767A Pending GB8809767D0 (en) 1988-04-25 1988-04-25 Airflow detector
GB8908808A Expired - Fee Related GB2220485B (en) 1988-04-25 1989-04-19 Airflow detector

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB888809767A Pending GB8809767D0 (en) 1988-04-25 1988-04-25 Airflow detector

Country Status (1)

Country Link
GB (2) GB8809767D0 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5201322A (en) * 1988-08-17 1993-04-13 Elf Atochem North America, Inc. Device for detecting air flow through a passageway
EP0461281A1 (en) * 1990-06-12 1991-12-18 Atochem North America, Inc. Device for detecting air flow through a passageway
WO1996018823A1 (en) * 1994-12-15 1996-06-20 The Whitaker Corporation Metal enforced pvdf vibrational fan
GB0609405D0 (en) * 2006-05-12 2006-06-21 Bpr Medical Ltd Gas flow indicator

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252433A (en) * 1968-01-31 1971-11-03
GB1456519A (en) * 1972-11-20 1976-11-24 Kureha Chemical Ind Co Ltd Method of detecting or measuring vibrations
EP0233057A2 (en) * 1986-02-06 1987-08-19 Kureha Kagaku Kogyo Kabushiki Kaisha Vibration sensor
EP0239703A1 (en) * 1986-01-07 1987-10-07 THORN EMI plc Force-sensitive flow sensor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1252433A (en) * 1968-01-31 1971-11-03
GB1456519A (en) * 1972-11-20 1976-11-24 Kureha Chemical Ind Co Ltd Method of detecting or measuring vibrations
EP0239703A1 (en) * 1986-01-07 1987-10-07 THORN EMI plc Force-sensitive flow sensor
EP0233057A2 (en) * 1986-02-06 1987-08-19 Kureha Kagaku Kogyo Kabushiki Kaisha Vibration sensor

Also Published As

Publication number Publication date
GB8809767D0 (en) 1988-06-02
GB2220485A (en) 1990-01-10
GB8908808D0 (en) 1989-06-07

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19990419