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:
Feb. 02, 1982
Filed:
Mar. 03, 1980
James F Stewart, Shoreview, MN (US);
Pako Corporation, Minneapolis, MN (US);
Abstract
A neghold assembly for use in a photographic printer includes a bottom clamping surface, a pivot arm, a top clamping plate fixedly attached to the pivot arm, a solenoid upwardly engaging the pivot arm and a bias spring for upwardly engaging the pivot arm. The bottom and top clamping plates have apertures that allow light to be transmitted through the photographic film being held between the top clamping plate and the bottom clamping surface for exposing photosensitive print film. The solenoid engages the pivot arm on the side opposite of the pivot point from the top clamping plate. The solenoid pivots the top clamping plate about the pivot point to a clamping position whereby the top and bottom clamping plates are clamped together to hold the film negative. The bias spring pivots the top clamping plate upwardly from the clamping position to an open position when the solenoid is deenergized.