FR741728A - - Google Patents

Info

Publication number
FR741728A
FR741728A FR741728DA FR741728A FR 741728 A FR741728 A FR 741728A FR 741728D A FR741728D A FR 741728DA FR 741728 A FR741728 A FR 741728A
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
Other languages
French (fr)
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.)
Publication date
Priority to US504307A priority Critical patent/US1933305A/en
Application granted granted Critical
Publication of FR741728A publication Critical patent/FR741728A/fr
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G01MEASURING; TESTING
    • G01PMEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36Devices characterised by the use of optical means, e.g. using infra-red, visible, or ultra-violet light
    • G01P3/40Devices characterised by the use of optical means, e.g. using infra-red, visible, or ultra-violet light using stroboscopic means
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/38Visual features other than those contained in record tracks or represented by sprocket holes the visual signals being auxiliary signals
    • G11B23/42Marks for indexing, speed-controlling, synchronising, or timing
    • GPHYSICS
    • G11INFORMATION STORAGE
    • G11BINFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/02Cabinets; Cases; Stands; Disposition of apparatus therein or thereon
    • G11B33/022Cases
FR741728D 1930-12-23 Expired FR741728A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US504307A US1933305A (en) 1930-12-23 1930-12-23 Direct-reading multispeed speedoscope

Publications (1)

Publication Number Publication Date
FR741728A true FR741728A (en) 1933-02-18

Family

ID=24005709

Family Applications (1)

Application Number Title Priority Date Filing Date
FR741728D Expired FR741728A (en) 1930-12-23

Country Status (2)

Country Link
US (1) US1933305A (en)
FR (1) FR741728A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2736228A (en) * 1956-02-28 hardy
US2646284A (en) * 1950-09-23 1953-07-21 Herbert B Weingarden Record adapter and automatic speed changer
US2985059A (en) * 1956-06-28 1961-05-23 Morgan Dev Lab Inc Phonograph record for praxinoscopic devices
DE2748704C3 (en) * 1977-10-29 1981-03-19 Philips Patentverwaltung Gmbh, 2000 Hamburg, De
US4582427A (en) * 1983-10-13 1986-04-15 The United States Of America As Represented By The Secretary Of The Air Force Test target for adaptive optics
US4706237A (en) * 1984-10-05 1987-11-10 U.S. Philips Corporation Disc player with strobe light illumination

Also Published As

Publication number Publication date
US1933305A (en) 1933-10-31

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