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:
Jun. 15, 1976
Filed:
Dec. 26, 1974
Francis E Ryder, Barrington, IL (US);
Theodore H Mueller, Cary, IL (US);
Ryder International Corporation, Barrington, IL (US);
Abstract
The embodiment of the invention disclosed herein is directed to a checklist device for providing an indication of tasks to be performed and tasks already performed. The checklist device includes a housing having a first receptacle therein for receiving an indicia or information bearing sheet. A second receptacle is formed in the housing and provides for the storage of drawing or other indicia-bearing sheets to be interchanged with the indicia-bearing sheet in the first receptacle. A windowed panel is secured to the housing and provides a plurality of transparent, discrete viewing areas. The indicia on the indicia-bearing sheet within the first receptacle are in registry with the transparent windows, and a plurality of groups of toggles are secured to the window panel with one group of toggles positioned in relation to one or more of the viewing areas. Each of the toggles has two positions, one position for covering selected indicia on the indicia-bearing sheet while in registry with the transparent window and another position for uncovering the selected indicia.