FR2178549A5 - - Google Patents

Info

Publication number
FR2178549A5
FR2178549A5 FR7244983A FR7244983A FR2178549A5 FR 2178549 A5 FR2178549 A5 FR 2178549A5 FR 7244983 A FR7244983 A FR 7244983A FR 7244983 A FR7244983 A FR 7244983A FR 2178549 A5 FR2178549 A5 FR 2178549A5
Authority
FR
France
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
FR7244983A
Other languages
French (fr)
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.)
Rank Organization Ltd
Original Assignee
Rank Organization 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 Rank Organization Ltd filed Critical Rank Organization Ltd
Application granted granted Critical
Publication of FR2178549A5 publication Critical patent/FR2178549A5/fr
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1427—Control of position or direction using feedback using an analogue comparing device with non-linear amplifier chain
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
    • G02B7/28—Systems for automatic generation of focusing signals
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B17/00—Details of cameras or camera bodies; Accessories therefor
    • G03B17/02—Bodies
    • G03B17/12—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets
    • G03B17/14—Bodies with means for supporting objectives, supplementary lenses, filters, masks, or turrets interchangeably

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Position Or Direction (AREA)
  • Control Of Velocity Or Acceleration (AREA)
  • Lens Barrels (AREA)
FR7244983A 1971-12-17 1972-12-18 Expired FR2178549A5 (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5867071A GB1382057A (en) 1971-12-17 1971-12-17 Servomechanisms

Publications (1)

Publication Number Publication Date
FR2178549A5 true FR2178549A5 (no) 1973-11-09

Family

ID=10482149

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7244983A Expired FR2178549A5 (no) 1971-12-17 1972-12-18

Country Status (5)

Country Link
JP (1) JPS4867682A (no)
DE (1) DE2261514A1 (no)
FR (1) FR2178549A5 (no)
GB (1) GB1382057A (no)
NL (1) NL7214983A (no)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438852A1 (fr) * 1978-10-11 1980-05-09 Canon Kk Appareil de commande de lentilles mobiles d'un objectif
EP0022105A1 (en) * 1979-06-20 1981-01-07 Akermans Verkstad AB A device for reducing piston velocity in a cylinder
EP0292473B1 (en) * 1985-01-07 1990-05-09 Akermans Verkstad AB Method for reducing the piston speed, especially in the piston and cylinder assemblies of an excavating machine, and device for carrying out the method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58110778A (ja) * 1981-12-23 1983-07-01 ワイケイケイ株式会社 自動開閉扉の制御装置
JPS63118024U (no) * 1987-01-27 1988-07-30
GB9223827D0 (en) * 1992-11-13 1993-01-06 Fermec Mfg Ltd System for controlling the speed of a piston in a piston and cylinder assembly
DE10256923B4 (de) 2002-12-05 2013-10-24 Liebherr-France S.A. Verfahren und Vorrichtung zur Bewegungsdämpfung von Hydraulikzylindern mobiler Arbeitsmaschinen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2438852A1 (fr) * 1978-10-11 1980-05-09 Canon Kk Appareil de commande de lentilles mobiles d'un objectif
EP0022105A1 (en) * 1979-06-20 1981-01-07 Akermans Verkstad AB A device for reducing piston velocity in a cylinder
US4358989A (en) 1979-06-20 1982-11-16 Akermans Verstad Ab Device for reducing piston velocity in a cylinder
EP0292473B1 (en) * 1985-01-07 1990-05-09 Akermans Verkstad AB Method for reducing the piston speed, especially in the piston and cylinder assemblies of an excavating machine, and device for carrying out the method

Also Published As

Publication number Publication date
DE2261514A1 (de) 1973-06-20
GB1382057A (en) 1975-01-29
JPS4867682A (no) 1973-09-14
NL7214983A (no) 1973-06-19

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Legal Events

Date Code Title Description
ST Notification of lapse