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:
Aug. 12, 1986
Filed:
Dec. 24, 1984
Applicant:
Inventors:
James J Livingston, Waltham, MA (US);
Duncan C Sorli, Chelmsford, MA (US);
Assignee:
Polaroid Corporation, Cambridge, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03D / ;
U.S. Cl.
CPC ...
354303 ; 354305 ; 354317 ; 118410 ; 118683 ; 118688 ; 222 58 ; 222375 ;
Abstract
A method of an apparatus for insuring application of a preselected amount of processing fluid to photographic film material are disclosed. A weight sensing device weighs a container of the fluid and permits pumping of the fluid if there is an adequate amount of fluid contained in the container. A magnetic sensing arrangement also effects reversal of the pumping after a preselected length of material has had fluid applied thereto. At the completion of fluid application, the fluid is evacuated from the nozzle.