GB1497809A - Angular positional sensing devices - Google Patents

Angular positional sensing devices

Info

Publication number
GB1497809A
GB1497809A GB349475A GB349475A GB1497809A GB 1497809 A GB1497809 A GB 1497809A GB 349475 A GB349475 A GB 349475A GB 349475 A GB349475 A GB 349475A GB 1497809 A GB1497809 A GB 1497809A
Authority
GB
United Kingdom
Prior art keywords
pendulum
housing
shaft
wheel
angular
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
GB349475A
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.)
BP Trading Ltd
Original Assignee
BP Trading 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 BP Trading Ltd filed Critical BP Trading Ltd
Priority to GB349475A priority Critical patent/GB1497809A/en
Priority to US05/646,985 priority patent/US4027399A/en
Priority to CA243,386A priority patent/CA1063696A/en
Priority to DE19762601177 priority patent/DE2601177A1/en
Priority to NO760217A priority patent/NO760217L/no
Priority to FR7601994A priority patent/FR2298785A1/en
Priority to JP51007402A priority patent/JPS5199559A/ja
Priority to NLAANVRAGE7600814,A priority patent/NL183907C/en
Publication of GB1497809A publication Critical patent/GB1497809A/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
    • G01C9/12—Measuring inclination, e.g. by clinometers, by levels by using a single pendulum plumb lines G01C15/10
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B47/00—Survey of boreholes or wells
    • E21B47/02—Determining slope or direction
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B7/00—Special methods or apparatus for drilling
    • E21B7/04—Directional drilling
    • E21B7/043—Directional drilling for underwater installations

Landscapes

  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Mining & Mineral Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Geophysics (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

1497809 Clinometers BP TRADING Ltd 23 Dec 1975 [27 Jan 1975 9 April 1975] 3494/75 and 14513/75 Headings G1F and G1N An angular-position sensor comprises a housing 10 in which is mounted a rotation-sensing device 11 having a freely rotatable shaft 14 carrying a pendulum 17, such that angular movement of the housing about the shaft axis causes rotation of the device relative to the shaft, which is retained stationary by the pendulum, to produce a signal. The device 11 is screwed 12 to the housing with its sensing shaft 14 rigidly secured to and coaxial with a cylindrical pendulum 17 having a weight 18. The pendulum is light both in mass and inertia compared with a balanced wheel 24 rotatably mounted on the housing and circumferentially surrounding the pendulum; the housing including the space between the pendulum and wheel is filled with a damping fluid, a cellular member 29 accommodating any expansion of the fluid. To increase damping between the wheel and pendulum these may have interfitting cylindrical portions (17a, 24a), Fig. 1B (not shown). Two such sensors are shown installed at right angles to each other on the outside of a riser pipe, and their output signals are displayed on a CRT and also to an alarm system which operates progressively as predetermined angles of deviation from the vertical or other chosen reference are exceeded.
GB349475A 1975-01-27 1975-01-27 Angular positional sensing devices Expired GB1497809A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
GB349475A GB1497809A (en) 1975-01-27 1975-01-27 Angular positional sensing devices
US05/646,985 US4027399A (en) 1975-01-27 1976-01-07 Positional sensing
CA243,386A CA1063696A (en) 1975-01-27 1976-01-09 Damped pendulum angular position
DE19762601177 DE2601177A1 (en) 1975-01-27 1976-01-14 POSITION SENSATION
NO760217A NO760217L (en) 1975-01-27 1976-01-23
FR7601994A FR2298785A1 (en) 1975-01-27 1976-01-26 ANGULAR POSITION CONTROL PERFECTIONS
JP51007402A JPS5199559A (en) 1975-01-27 1976-01-26
NLAANVRAGE7600814,A NL183907C (en) 1975-01-27 1976-01-27 ANGLE SENSOR.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB349475A GB1497809A (en) 1975-01-27 1975-01-27 Angular positional sensing devices

Publications (1)

Publication Number Publication Date
GB1497809A true GB1497809A (en) 1978-01-12

Family

ID=9759396

Family Applications (1)

Application Number Title Priority Date Filing Date
GB349475A Expired GB1497809A (en) 1975-01-27 1975-01-27 Angular positional sensing devices

Country Status (1)

Country Link
GB (1) GB1497809A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129945A (en) * 1982-11-10 1984-05-23 Takraf Schwermasch Measuring inclinations in mobile load lifting machines using pendulum electronic inclinometers
GB2146773A (en) * 1983-09-20 1985-04-24 Volvo Penta Ab Trim indicator for boats with outboard propeller drive units
GB2170006A (en) * 1985-01-22 1986-07-23 Penny & Giles Potentiometers L Inclinometers
EP1126238A2 (en) * 2000-02-15 2001-08-22 Fernsteuergeräte Kurt Oelsch GmbH Inclination sensor
WO2003068339A1 (en) * 2002-02-12 2003-08-21 Christopher Worrall Movement detection apparatus and method of use thereof

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2129945A (en) * 1982-11-10 1984-05-23 Takraf Schwermasch Measuring inclinations in mobile load lifting machines using pendulum electronic inclinometers
GB2146773A (en) * 1983-09-20 1985-04-24 Volvo Penta Ab Trim indicator for boats with outboard propeller drive units
AU572186B2 (en) * 1983-09-20 1988-05-05 Volvo Penta A.B. Trim indicator for outboard drive unit
GB2170006A (en) * 1985-01-22 1986-07-23 Penny & Giles Potentiometers L Inclinometers
US4667413A (en) * 1985-01-22 1987-05-26 Penny & Giles Potentiometers Limited Inclinometers
EP1126238A2 (en) * 2000-02-15 2001-08-22 Fernsteuergeräte Kurt Oelsch GmbH Inclination sensor
EP1126238A3 (en) * 2000-02-15 2002-07-17 Fernsteuergeräte Kurt Oelsch GmbH Inclination sensor
WO2003068339A1 (en) * 2002-02-12 2003-08-21 Christopher Worrall Movement detection apparatus and method of use thereof

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Legal Events

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

Effective date: 19931223