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.:

US 7021776 B1

PDF
Full Text
Expired
Date of Patent:
Apr. 04, 2006

Filed:

Jun. 10, 2002
Applicant:

Kazuhiro Nagae, Tokyo, JP;

Inventor:

Kazuhiro Nagae, Tokyo, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 23/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

In a space navigation optical instrument comprising a barrel for housing therein an optical part and a contaminant removing door, provided at a part of the outer periphery of the barrel which has the largest radiant heat coupled to the space during a space navigation and has the least external heat input, for opening the inside of the barrel to the space, a thermal gradient is generated in which the inside of the barrel is of a high temperature and the space is of a low temperature, and the inside of the barrel is opened to the space by opening the contaminant removing door to discharge contaminants into the space.


Find Patent Forward Citations

Nagae, Kazuhiro. (2006). Space navigation optical instrument and contaminant removing method thereof (U.S. Patent No. 7021776). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7021776

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Loading…