The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 20, 1982
Filed:
May. 20, 1981
Applicant:
Inventors:
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354275 ; 242 711 ;
Abstract
A roll film cassette facilitating the loading of film in ordinary light conditions without risk of exposure comprises a housing, a window adjacent one end of the housing, a film supply spool for unexposed film and a take-up spool for exposed film at the window end of the housing, and a reversing roller at the opposite end of the housing. The two spools are incorporated into a common spool-holder unit bodily attachable in and removable from the housing. The parts of the spool-holder unit for mounting the supply spool include a light-tight sleeve with an opening for the insertion and removal of the spool. The opening has a hinged door-like lid and an axial slot for the accommodation of a leader portion of the film.