GB2280029A - Levelling Device - Google Patents

Levelling Device

Info

Publication number
GB2280029A
GB2280029A GB9417658A GB9417658A GB2280029A GB 2280029 A GB2280029 A GB 2280029A GB 9417658 A GB9417658 A GB 9417658A GB 9417658 A GB9417658 A GB 9417658A GB 2280029 A GB2280029 A GB 2280029A
Authority
GB
United Kingdom
Prior art keywords
reference surface
level
lit
predetermined angle
externally visible
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.)
Granted
Application number
GB9417658A
Other versions
GB2280029B (en
GB9417658D0 (en
Inventor
Paul Steabben Hepworth
Brian Edward Brooks
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.)
Turner Intellectual Property Ltd
Original Assignee
Turner Intellectual Property 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 Turner Intellectual Property Ltd filed Critical Turner Intellectual Property Ltd
Publication of GB9417658D0 publication Critical patent/GB9417658D0/en
Publication of GB2280029A publication Critical patent/GB2280029A/en
Application granted granted Critical
Publication of GB2280029B publication Critical patent/GB2280029B/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
    • G01C9/34—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 of the tubular type, i.e. for indicating the level in one direction only

Abstract

A leveling device, in the form of a spirit level (Fig. 1), has a casing (10) with an exterior reference surface (11) and an array of five externally visible light emitting diodes (34 - 38), the centre diode (36) being lit, in use, when the reference surface is at a predetermined angle to the vertical or horizontal, and the diodes (34, 35; 37, 38) being lit progressively at a respective side of said central diode as the level is moved towards or away from its balance position where the reference surface is at said at least one predetermined angle, the balance position optionally also providing an audio signal. The level includes one ore more conventional bubble vials (25, 53) (Fig. 4), and though in the main embodiment these are concealed from exposure to ambient light, they are externally visible in an alternative embodiment. Supply of power automatically switches off after a predetermined time. <IMAGE>
GB9417658A 1992-03-07 1993-03-04 Levelling Device Expired - Fee Related GB2280029B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB929205027A GB9205027D0 (en) 1992-03-07 1992-03-07 Levelling device
PCT/GB1993/000448 WO1993018370A1 (en) 1992-03-07 1993-03-04 Levelling device

Publications (3)

Publication Number Publication Date
GB9417658D0 GB9417658D0 (en) 1994-11-16
GB2280029A true GB2280029A (en) 1995-01-18
GB2280029B GB2280029B (en) 1996-02-14

Family

ID=10711714

Family Applications (2)

Application Number Title Priority Date Filing Date
GB929205027A Pending GB9205027D0 (en) 1992-03-07 1992-03-07 Levelling device
GB9417658A Expired - Fee Related GB2280029B (en) 1992-03-07 1993-03-04 Levelling Device

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB929205027A Pending GB9205027D0 (en) 1992-03-07 1992-03-07 Levelling device

Country Status (3)

Country Link
EP (1) EP0629283A1 (en)
GB (2) GB9205027D0 (en)
WO (1) WO1993018370A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1001007C2 (en) * 1995-08-18 1997-02-20 Petrus Henricus Adrianus Maria Levelling sensor for use with fork-lift truck or independently
US5761818A (en) * 1996-05-31 1998-06-09 Evan L. Hopkins Digital inclinometer
DE29803688U1 (en) * 1998-03-03 1998-04-30 Nivolas Laser Technik Gmbh Leveling device, in particular a spirit level
FR2878952A1 (en) * 2004-12-02 2006-06-09 Laurence Marie Claude Giraud Working tool e.g. level, for adjusting e.g. surface in vertical, has board connecting diodes to contactors adjusted in parallel to bubbles housed in case, where contactors transmit information to diodes that desired angle is obtained
CA2797106C (en) 2010-05-03 2016-11-08 James S. Allemand Lighted level tool
RU2453811C1 (en) * 2010-12-20 2012-06-20 Павел Игоревич Шупейкин Electronic level gauge
US10436584B2 (en) 2016-05-06 2019-10-08 Milwaukee Electric Tool Corporation Level with audio and/or visual indicators

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182046A (en) * 1978-06-02 1980-01-08 Ludlow Roger D Electronic level and protractor
EP0130738A2 (en) * 1983-06-22 1985-01-09 Eureka Developments Limited Electronic levelling device
DE9002930U1 (en) * 1990-03-15 1990-05-17 Kampfrath, Gerit, Dr.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4182046A (en) * 1978-06-02 1980-01-08 Ludlow Roger D Electronic level and protractor
EP0130738A2 (en) * 1983-06-22 1985-01-09 Eureka Developments Limited Electronic levelling device
DE9002930U1 (en) * 1990-03-15 1990-05-17 Kampfrath, Gerit, Dr.

Also Published As

Publication number Publication date
EP0629283A1 (en) 1994-12-21
GB2280029B (en) 1996-02-14
GB9417658D0 (en) 1994-11-16
GB9205027D0 (en) 1992-04-22
WO1993018370A1 (en) 1993-09-16

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970304