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:
Nov. 03, 1981
Filed:
Jun. 24, 1980
Applicant:
Inventor:
Harvey S Friedman, Sudbury, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03D / ;
U.S. Cl.
CPC ...
354304 ; 354 86 ; 118104 ;
Abstract
A roller assembly mounted in a housing of a camera and adapted to spread a processing liquid across an exposed film unit as it is being advanced between the rollers of the assembly so as to initiate the formation of a visible image within the film unit. A pair of wiper blades are mounted adjacent one of the rollers such that they may engage opposite ends of the roller, during passage of a film unit therebetween, so as to remove particulate material therefrom. The two wiper blades are integral parts of two members which also function to releasably hold a film unit by its end after it has moved out of engagement with the rollers.