FR783384A - Improvements to coupling or braking devices - Google Patents

Improvements to coupling or braking devices

Info

Publication number
FR783384A
FR783384A FR783384DA FR783384A FR 783384 A FR783384 A FR 783384A FR 783384D A FR783384D A FR 783384DA FR 783384 A FR783384 A FR 783384A
Authority
FR
France
Prior art keywords
coupling
braking devices
braking
devices
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
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.)
RCA Corp
Original Assignee
RCA Corp
Radio Corporation of America
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 RCA Corp, Radio Corporation of America filed Critical RCA Corp
Application granted granted Critical
Publication of FR783384A publication Critical patent/FR783384A/en
Expired legal-status Critical Current

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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
FR783384D 1933-12-30 1934-12-28 Improvements to coupling or braking devices Expired FR783384A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US783384XA 1933-12-30 1933-12-30

Publications (1)

Publication Number Publication Date
FR783384A true FR783384A (en) 1935-07-11

Family

ID=22143398

Family Applications (1)

Application Number Title Priority Date Filing Date
FR783384D Expired FR783384A (en) 1933-12-30 1934-12-28 Improvements to coupling or braking devices

Country Status (1)

Country Link
FR (1) FR783384A (en)

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