GB2238382B - Level detecting devices - Google Patents

Level detecting devices

Info

Publication number
GB2238382B
GB2238382B GB9024006A GB9024006A GB2238382B GB 2238382 B GB2238382 B GB 2238382B GB 9024006 A GB9024006 A GB 9024006A GB 9024006 A GB9024006 A GB 9024006A GB 2238382 B GB2238382 B GB 2238382B
Authority
GB
United Kingdom
Prior art keywords
reservoir
level detecting
detecting devices
light
bubble
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
GB9024006A
Other versions
GB2238382A (en
GB9024006D0 (en
Inventor
Colin Webb
Trevor Smith
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.)
SURE RIGHT WEBB Ltd
Original Assignee
SURE RIGHT WEBB 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 GB898924786A external-priority patent/GB8924786D0/en
Application filed by SURE RIGHT WEBB Ltd filed Critical SURE RIGHT WEBB Ltd
Priority to GB9024006A priority Critical patent/GB2238382B/en
Publication of GB9024006D0 publication Critical patent/GB9024006D0/en
Publication of GB2238382A publication Critical patent/GB2238382A/en
Application granted granted Critical
Publication of GB2238382B publication Critical patent/GB2238382B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/02—Details
    • G01C9/06—Electric or photoelectric indication or reading means
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C9/00—Measuring inclination, e.g. by clinometers, by levels
    • G01C9/18—Measuring inclination, e.g. by clinometers, by levels by using liquids
    • G01C9/24—Measuring inclination, e.g. by clinometers, by levels by using liquids in closed containers partially filled with liquid so as to leave a gas bubble

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)

Abstract

The device is based on a spirit level system where a bubble 6 is housed within a reservoir 7 of liquid. One side of the reservoir 7 acts to reflect light, from a source 2 disposed on a side of the reservoir remote therefrom, towards a pair of light sensors 1 and 3 disposed one each side of the source 2. Presence of the bubble 6 at a central zone of the reservoir increases reflectance of the light and the device detects a level condition when signals from both sensors 1, 3 are equal. <IMAGE>
GB9024006A 1989-11-03 1990-11-05 Level detecting devices Expired - Fee Related GB2238382B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9024006A GB2238382B (en) 1989-11-03 1990-11-05 Level detecting devices

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898924786A GB8924786D0 (en) 1989-11-03 1989-11-03 Tools
GB9024006A GB2238382B (en) 1989-11-03 1990-11-05 Level detecting devices

Publications (3)

Publication Number Publication Date
GB9024006D0 GB9024006D0 (en) 1990-12-19
GB2238382A GB2238382A (en) 1991-05-29
GB2238382B true GB2238382B (en) 1993-09-01

Family

ID=26296144

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9024006A Expired - Fee Related GB2238382B (en) 1989-11-03 1990-11-05 Level detecting devices

Country Status (1)

Country Link
GB (1) GB2238382B (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5650608A (en) * 1991-12-05 1997-07-22 Tv Interactive Data Corporation Method and apparatus for generating ratiometric control signals
US5459489A (en) * 1991-12-05 1995-10-17 Tv Interactive Data Corporation Hand held electronic remote control device
US5847694A (en) * 1991-12-05 1998-12-08 Tv Interactive Data Corporation Apparatus for generating a signal indicative of the position of a movable element in the apparatus
DE19604255C2 (en) * 1996-02-06 2000-07-13 Telefunken Microelectron Device for the optical detection of acceleration and / or inclination-related movements of a body in a medium
US6268912B1 (en) 1996-02-13 2001-07-31 Amada Electronics Company, Ltd. Angle detection method for bending machine, angle detection apparatus and angle sensor
US5818037A (en) * 1996-04-09 1998-10-06 Tv Interactive Data Corporation Controller using a flexible element to vary light transferred to a photosensitive element
DE102005056736B4 (en) * 2005-11-23 2008-02-21 Sartorius Ag tilt sensor
US7497021B2 (en) * 2006-01-24 2009-03-03 Trimble Navigation Limited Multi-axis bubble vial device
US7350305B2 (en) * 2006-02-21 2008-04-01 Molitech Corporation Laser activated audible signal emitting leveler
DE102006056072B3 (en) * 2006-11-28 2008-03-06 Sartorius Ag Inclination sensor i.e. clinometer, for use in e.g. measuring instrument, has light receivers that detect different light quantities when gas bubble is not centered, where light source and light receivers are arranged on chip substrate
DE102012110693A1 (en) * 2012-11-08 2014-05-08 Sartorius Lab Instruments Gmbh & Co. Kg Optoelectronic tilt sensor

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU501275A1 (en) * 1974-04-19 1976-01-30 Предприятие П/Я А-1944 Angle Measuring Device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU501275A1 (en) * 1974-04-19 1976-01-30 Предприятие П/Я А-1944 Angle Measuring Device

Also Published As

Publication number Publication date
GB2238382A (en) 1991-05-29
GB9024006D0 (en) 1990-12-19

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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: 20011105