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IT977131B - Perfezionamento nelle disposizioni di azionamento di bobina per proiettori cinematografici - Google Patents

Perfezionamento nelle disposizioni di azionamento di bobina per proiettori cinematografici

Info

Publication number
IT977131B
IT977131B IT47951/73A IT4795173A IT977131B IT 977131 B IT977131 B IT 977131B IT 47951/73 A IT47951/73 A IT 47951/73A IT 4795173 A IT4795173 A IT 4795173A IT 977131 B IT977131 B IT 977131B
Authority
IT
Italy
Prior art keywords
improvement
reel operation
movie projectors
operation arrangements
arrangements
Prior art date
Application number
IT47951/73A
Other languages
English (en)
Original Assignee
Bell & Howell Co
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 Bell & Howell Co filed Critical Bell & Howell Co
Application granted granted Critical
Publication of IT977131B publication Critical patent/IT977131B/it

Links

Classifications

    • 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
    • G03B21/00—Projectors or projection-type viewers; Accessories therefor
    • G03B21/14—Details
    • G03B21/32—Details specially adapted for motion-picture projection
    • G03B21/43—Driving mechanisms
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T74/00—Machine element or mechanism
    • Y10T74/19—Gearing
    • Y10T74/19614—Disconnecting means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Winding Of Webs (AREA)
  • Projection Apparatus (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
IT47951/73A 1972-05-12 1973-01-29 Perfezionamento nelle disposizioni di azionamento di bobina per proiettori cinematografici IT977131B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US25289372A 1972-05-12 1972-05-12

Publications (1)

Publication Number Publication Date
IT977131B true IT977131B (it) 1974-09-10

Family

ID=22957985

Family Applications (1)

Application Number Title Priority Date Filing Date
IT47951/73A IT977131B (it) 1972-05-12 1973-01-29 Perfezionamento nelle disposizioni di azionamento di bobina per proiettori cinematografici

Country Status (4)

Country Link
US (1) US3782658A (it)
JP (1) JPS4929136A (it)
DE (1) DE2302914A1 (it)
IT (1) IT977131B (it)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5476233A (en) * 1992-12-14 1995-12-19 Tohoku Ricoh Co., Ltd. Stacker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2673041A (en) * 1954-03-23 Tape or film boll driving mechanism
US1841950A (en) * 1931-05-04 1932-01-19 Bates Mfg Co Data recording and displaying device

Also Published As

Publication number Publication date
JPS4929136A (it) 1974-03-15
DE2302914A1 (de) 1973-11-29
US3782658A (en) 1974-01-01

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