GB1001771A - Improvements in or relating to the illumination of levelling bubbles - Google Patents

Improvements in or relating to the illumination of levelling bubbles

Info

Publication number
GB1001771A
GB1001771A GB17088/63A GB1708863A GB1001771A GB 1001771 A GB1001771 A GB 1001771A GB 17088/63 A GB17088/63 A GB 17088/63A GB 1708863 A GB1708863 A GB 1708863A GB 1001771 A GB1001771 A GB 1001771A
Authority
GB
United Kingdom
Prior art keywords
illumination
relating
levelling
bubbles
levelling bubbles
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
GB17088/63A
Inventor
John Douglas Ault
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.)
Saunders Roe and Nuclear Enterprises Ltd
Original Assignee
Saunders Roe and Nuclear Enterprises 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
Application filed by Saunders Roe and Nuclear Enterprises Ltd filed Critical Saunders Roe and Nuclear Enterprises Ltd
Priority to GB17088/63A priority Critical patent/GB1001771A/en
Priority to US362144A priority patent/US3368287A/en
Publication of GB1001771A publication Critical patent/GB1001771A/en
Expired 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
    • G01C9/18—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
    • G01C9/26—Details
    • G01C9/32—Means for facilitating the observation of the position of the bubble, e.g. illuminating means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)

Abstract

The bubble 3 of a spirit level 1 is illuminated by a tritium-filled phosphor-coated tube 5 which may be mounted in, or adjacent to, the spirit-level. Part of the tube may have a reflective coating, a shock-proof and reflective mounting.
GB17088/63A 1963-05-01 1963-05-01 Improvements in or relating to the illumination of levelling bubbles Expired GB1001771A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB17088/63A GB1001771A (en) 1963-05-01 1963-05-01 Improvements in or relating to the illumination of levelling bubbles
US362144A US3368287A (en) 1963-05-01 1964-04-23 Level bubble illumination by means of a radioactive gas and a phosphor element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17088/63A GB1001771A (en) 1963-05-01 1963-05-01 Improvements in or relating to the illumination of levelling bubbles

Publications (1)

Publication Number Publication Date
GB1001771A true GB1001771A (en) 1965-08-18

Family

ID=10089040

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17088/63A Expired GB1001771A (en) 1963-05-01 1963-05-01 Improvements in or relating to the illumination of levelling bubbles

Country Status (2)

Country Link
US (1) US3368287A (en)
GB (1) GB1001771A (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4103430A (en) * 1977-08-31 1978-08-01 Schrader Joseph F Viewing device for a bubble level
US4213052A (en) * 1978-06-19 1980-07-15 American Atomics Corporation Miniature radioactive light source and method of its manufacture
US4546417A (en) * 1983-07-19 1985-10-08 Safety Light Corporation Self-luminous light source
US4571845A (en) * 1984-01-30 1986-02-25 Wright Randall J Polycast level instruments with means for retaining level vials therein
US5588217A (en) * 1995-03-01 1996-12-31 Empire Level Mfg. Co. Level vial assembly with encapsulated vial
IL123586A (en) 1998-03-06 2001-04-30 Karpo Ind Ltd Spirit level with hand grips
US7024781B1 (en) * 2002-08-27 2006-04-11 Johnson Level & Tool Mfg. Co., Inc. Vial illumination feature for a tool such as a level
US6915586B2 (en) * 2003-08-18 2005-07-12 Empire Level Mfg. Corp. Box level
US7565751B2 (en) * 2006-10-16 2009-07-28 The Stanley Works Measuring device with fluorescent translucent material
US9909867B2 (en) 2009-03-13 2018-03-06 Otl Dynamics Llc Leveling and positioning system and method
US8959784B2 (en) 2009-03-13 2015-02-24 Richard S. Schubert Remote leveling and positioning system and method
US8006397B2 (en) * 2009-03-13 2011-08-30 Schubert Dick S Remote leveling and positioning system and method
US9464895B2 (en) 2009-03-13 2016-10-11 Otl Dynamics Llc Remote leveling and positioning system and method
US10502565B2 (en) 2009-03-13 2019-12-10 Otl Dynamics Llc Leveling and positioning system and method
US10480940B2 (en) 2009-03-13 2019-11-19 Otl Dynamics Llc Leveling and positioning system and method
US9676073B2 (en) 2012-09-20 2017-06-13 Otl Dynamics Llc Work-tool control system and method
US9581316B2 (en) 2013-01-14 2017-02-28 Cammenga Company, Llc Apparatus and method for encapsulating tritium
IL224928A0 (en) 2013-02-26 2013-07-31 Kapro Ind Ltd Spirit level
USD730207S1 (en) 2014-03-05 2015-05-26 Kapro Industries Ltd. Spirit level
USD750984S1 (en) 2014-09-30 2016-03-08 Kapro Industries Ltd. Box spirit level with ruler
USD805928S1 (en) 2016-09-21 2017-12-26 Kapro Industries Ltd. Stud layout level

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1318162A (en) * 1919-06-16 1919-10-07 Ernest J Loring Luminous level.
US3005102A (en) * 1957-04-02 1961-10-17 United States Radium Corp Self luminous lamps
US3038271A (en) * 1959-07-22 1962-06-12 United States Radium Corp Self-luminous signs

Also Published As

Publication number Publication date
US3368287A (en) 1968-02-13

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