Patent · US Active

Shutter assembly

US8439581B2 · kind B2 · utility

0Cited by

24References

20Claims

0Family size

Assignee

VA, Inc. · US

Inventors

David Viglione · Rochester, US
Stephen T. Pasquaretta · Rochester, US

Key dates

Filing date	Feb 10, 2012
Grant date	May 14, 2013
Priority date	—
Expiry date	Feb 10, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG03B9/22
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A shutter assembly includes a plurality of shutter blades movable between an open position and a closed position, a drive ring having first and second oppositely-facing sides, at least one of the shutter blades being movably coupled to the first side, and a first permanent magnet coupled to the second side of the drive ring. The shutter assembly also includes a first solenoid selectively energizable to alternately attract and repel the first permanent magnet along an arcuate path beneath the first solenoid, thereby transitioning the plurality of shutter blades between the open and closed positions. The shutter assembly also includes a sensor assembly configured to detect a location of the first permanent magnet along the path.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.