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. 20, 2013
Filed:
Feb. 02, 2010
Konstantin Aab, Edermünde-Grifte, DE;
Konstantin Aab, Edermünde-Grifte, DE;
Leica Camera AG, Soloms, DE;
Abstract
A central shutter for camera objectives, said central shutter having a ring-shaped leaf carrier () surrounding the shutter aperture (), on which leaf carrier at least two studs () are disposed arranged in a circularly symmetrical manner in relation to each other, on which studs sickle-shaped shutter leaves () are pivotably mounted, and having an electric motor drive pivoting the shutter leaves () over the shutter aperture (), is distinguished in that the drive includes a motorized rotatable winding ring () which is realized as a flat ring disk and rests on the leaf carrier (), a cam ring () realized as a flat ring disk is rotatably mounted in the winding ring (), sawtooth-shaped cams () being provided on a ring surface thereof, wherein the winding ring () and the cam ring () are coupled to each other by means of at least one tension spring () that can be tensioned in the direction of rotation of the winding ring () and the pivoting movement of the shutter leaves () can be controlled by coupling to the cam ring ().