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
GB18983/33A
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.)
Zeiss Ikon AG
Original Assignee
Zeiss Ikon AG
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 Zeiss Ikon AGfiledCriticalZeiss Ikon AG
Publication of GB405189ApublicationCriticalpatent/GB405189A/en
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
G03B21/16—Cooling; Preventing overheating
Abstract
405,189. Kinematograph projectors. ZEISS IKON AKT.-GES., 72, Schandauerstrasse, Dresden, Germany. July 4, 1933, No. 18983. Convention date, July 14, 1932. Addition to 372,186. [Class 97 (i).] A film gate is formed as a hollow body through which a cooling liquid is passed. As shown, the hollow gate 1 is hinged and the inlet pipe 5 forms the hinge pin ; an outlet pipe 4 is provided.
GB18983/33A1932-07-141933-07-04Improvements in or relating to liquid cooled film gates for kinematograph projectors
ExpiredGB405189A
(en)