Patent · US Expired

Film cassette

US3969740A · kind A · utility

3Cited by

2References

4Claims

0Family size

Assignee

VEB Pentacon Dresden · DE

Inventors

Werner Hahn · Dresden, DE
Walter Hennig · Dresden, DE
Bernhard Walther

Key dates

Filing date	Dec 23, 1974
Grant date	Jul 13, 1976
Priority date	—
Expiry date	Dec 23, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG03B17/305
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The film cassette comprises a storage and take-up chambers interconnected by a crosspiece. The crosspiece has a transport surface, which faces the camera lens when located in the camera, over which the film is guided and against which the film is pressed by an engagement surface of the camera film gate. The crosspiece is provided with a slot extending in the direction of film transport, the slot passes through the crosspiece, the length of the slot is at least equal to the distance between two successive transport holes in the film.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.