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:
Jan. 01, 1980
Filed:
Apr. 19, 1978
Henry T Abstein, Jr, Roseburg, OR (US);
Dennis B Page, Redondo Beach, CA (US);
Hughes Aircraft Company, Culver City, CA (US);
Abstract
A spherical shaped plate and an orifice opening are oriented such that the edge of the plate can span and cover part of the orifice opening. Stops are provided to prevent a full 360.degree. rotation. The plate shape and wedge opening can be configured such that, as the angular position of the plate changes, the orifice area changes according to the predetermined relationship. The plate and the opening may be enclosed in a gas tight housing, with a stepping motor exterior to the housing coupled via a shaft passing through the housing to the plate. The plate angular position versus orifice area relationship is determined in combination with a desired linear angular position versus gas pressure curve, for use in copending patent application Ser. No. 897,821, filed herewith entitled 'Quasi-Random Pneumatic Vibration Facility and Automatic Frequency Modulating System Therefor' by Henry T. Abstein, Jr., Dennis B. Page, James M. Kallis, Charles F. Talbott, Jr. and Richard L. Baker.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile