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:
May. 16, 2000
Filed:
Aug. 31, 1993
Kiyotaka Kobayashi, Saitama-ken, JP;
Toshihiko Izaki, Saitama-ken, JP;
Hiroshi Sohma, Saitama-ken, JP;
Yukitaka Takeshita, Saitama-ken, JP;
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Abstract
A field frame for use with a finder which provides arbitrary or stepwise switches of an aspect ratio of the finder. The field frame is made up of a standard field frame, a first L-shaped field switch frame having a dowel pin and two elongated holes, and a second L-shaped field switch frame having a dowel pin and two elongated holes. These two L-shaped field switch frames are piled up one on top of the other in such a manner that dowel pins standing on the main body of the standard field frame fit into the laminated elongated holes of the L-shaped field switch frames. A driving wheel having engaging cutouts is also laminated on the L-shaped field switch frames so that the engaging cutouts can engage with the dowel pins of the field switch frames. The driving wheel is also provided with a lever. The clockwise rotation of the driving wheel causes the field switch frames to conceal the right and left edges of the standard field frame, whilst the counterclockwise rotation of the driving wheel causes the field switch frames to conceal the upper and lower edges of the standard field frame.