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FR2417058A1 - Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes - Google Patents

Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes

Info

Publication number
FR2417058A1
FR2417058A1 FR7804021A FR7804021A FR2417058A1 FR 2417058 A1 FR2417058 A1 FR 2417058A1 FR 7804021 A FR7804021 A FR 7804021A FR 7804021 A FR7804021 A FR 7804021A FR 2417058 A1 FR2417058 A1 FR 2417058A1
Authority
FR
France
Prior art keywords
actuated
semi
slower
pneumatic rams
return strokes
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.)
Withdrawn
Application number
FR7804021A
Other languages
French (fr)
Inventor
Didier Lerclercq
Philippe Leclercq
Patrice Andrieux
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.)
CAMELEON
Original Assignee
CAMELEON
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 CAMELEON filed Critical CAMELEON
Priority to FR7804021A priority Critical patent/FR2417058A1/en
Publication of FR2417058A1 publication Critical patent/FR2417058A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S10/00—Lighting devices or systems producing a varying lighting effect

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Power-Operated Mechanisms For Wings (AREA)

Abstract

The floodlighting equipment is for a public exhibition etc., having semitransparent screens moved one at a time into the path of the rays. This is done by pneumatic rams (5a, 5b, 5c), each actuating one screen (3a, 3b, 3c) and connected to a source of gas under pressure via a solenoid valve (6a). The return stroke of each ram, when moving the screen out of the path of the rays (2), is slower than the forward stroke. The rams can be single acting with return springs, there being a restrictr between each ram pressure chamber and the outlet to keep the return stroke slower.
FR7804021A 1978-02-13 1978-02-13 Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes Withdrawn FR2417058A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7804021A FR2417058A1 (en) 1978-02-13 1978-02-13 Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7804021A FR2417058A1 (en) 1978-02-13 1978-02-13 Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes

Publications (1)

Publication Number Publication Date
FR2417058A1 true FR2417058A1 (en) 1979-09-07

Family

ID=9204529

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7804021A Withdrawn FR2417058A1 (en) 1978-02-13 1978-02-13 Public exhibition floodlighting equipment - has semi-transparent screens actuated by pneumatic rams with slower return strokes

Country Status (1)

Country Link
FR (1) FR2417058A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356534A (en) * 1979-10-19 1982-10-26 Olympus Optical Co., Ltd. Light supply device for an endoscope
EP0179949A1 (en) * 1984-10-29 1986-05-07 Robert Neumeier Complementory device for a balloon

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037097A (en) * 1975-04-04 1977-07-19 Stillman Allen M Color changer for spotlights

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4037097A (en) * 1975-04-04 1977-07-19 Stillman Allen M Color changer for spotlights

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4356534A (en) * 1979-10-19 1982-10-26 Olympus Optical Co., Ltd. Light supply device for an endoscope
EP0179949A1 (en) * 1984-10-29 1986-05-07 Robert Neumeier Complementory device for a balloon

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Legal Events

Date Code Title Description
ST Notification of lapse