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:
Jul. 11, 1989
Filed:
Mar. 31, 1988
Robert W Derry, Stacy, MN (US);
Richard L Langton, Shoreview, MN (US);
Honeywell Inc., Minneapolis, MN (US);
Abstract
A thermally neutralized ring laser gyro with a dither spring mounted into a central bore of a gyro block which permits dither of the block about an axis of the spring with thermal expansion effects being minimized. The dither spring has a central mounting member, a tubular outer ring member with outer surface segments secured to the block bore, radial members adjoined to and extending outward from the central member to the ring member, generally T-shaped junctions in the ring member and between adjacent ones of the outer surface segments with the radial members being adjoined to the inside of the junctions and an outer surface of each junction being spaced inwardly toward the axis from a major outer diameter defined by the segments and being in non-contact with the block bore. A method of obtaining improved thermal neutrality in a dither gyro includes the steps of leaving a void between each junction and the block bore, and then the further step of expanding the junctions into the voids when the gyro temperature changes.