Patent · US Expired

Double-hooked spool

US4506843A · kind A · utility

17Cited by

2References

4Claims

0Family size

Assignee

Agfa-Gevaert NV · BE

Inventors

Hermann Luhrig · Leverkusen, DE
Guido Kovacic · Unkel, DE

Key dates

Filing date	Oct 18, 1982
Grant date	Mar 26, 1985
Priority date	—
Expiry date	Oct 18, 2002

Classification

Technology area (CPC G)Physics
CPC primaryG03B2217/261
WIPO fieldOptics
WIPO sectorInstruments

Abstract

The invention relates to a film spool with double hooks for fastening the perforated end of a film in the slot of a film spool, whereby a bar is positioned in the slot, on said bar are provided at least two pairs of hooks having hooking directions which are displaced in pairs by 180.degree. and are arranged above and below the central bar and holding down devices are provided in the slot above and below the central bar.

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