Patent · US Active

Camera viewfinder accessory mount

US8335427B1 · kind B1 · utility

2Cited by

4References

8Claims

0Family size

Assignee

Hoodman Corporation · US

Inventors

Louis J. Schmidt · Hermosa Beach, US
Michael R. Schmidt · Carmel, US
Robert Schmidt · Birkenfeld, DE

Key dates

Filing date	Jul 18, 2011
Grant date	Dec 18, 2012
Priority date	—
Expiry date	Aug 3, 2031

Classification

Technology area (CPC G)Physics
CPC primaryG03B17/566
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A camera viewfinder accessory mount in accordance with the invention includes a receiver mountable at least in part around a camera viewfinder frame. Thread units extend from the receiver. The thread units are defined by extensions having outside threads and inside geometric surfaces. A body portion of the accessory mount has a receiver end for matingly fitting the receiver, and a distal accessory end. The body portion further includes an indexing periphery having a peripheral shape for cooperating with the inside geometric surfaces of the thread units. The body portion also includes a stop radially extending from the periphery and spacedly disposed from the receiver end. A tightening wheel of the accessory mount has internal threads cooperable with the outside threads of the thread units to tighten the body portion receiver end to the camera viewfinder frame.

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