Patent · US Active

Shutter having magnet-driven drive ring

US8783978B2 · kind B2 · utility

0Cited by

4References

11Claims

0Family size

Assignee

VA, Inc. · US

Inventors

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

Key dates

Filing date	Oct 1, 2013
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Oct 1, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG03B9/08
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A shutter assembly includes a drive ring having a permanent magnet disposed thereon. The shutter assembly also includes a solenoid defining a gap between first and second magnetic poles thereof, the drive ring being disposed coplanar with the solenoid and being rotatable in response to a magnetic field created between the first and second magnetic poles. The shutter assembly also includes a plurality of shutter blades configured to transition between an open position and a closed position in response to rotation of the drive ring. The shutter assembly further includes a base plate separating the plurality of shutter blades from at least one of the drive ring and the solenoid.

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