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:
Feb. 13, 1979
Filed:
Jan. 17, 1977
Unisearch Limited, , AU;
Abstract
A navigation aid consists of only three, namely first, second, and third indicia bearing members, the latter being respectively a transparent ground speed member bearing a ground speed scale having an origin, a transparent true air speed member bearing a true air speed scale having an origin, and a transparent wind speed and direction member bearing a wind speed scale and a wind direction indicator and having an origin, one of the first and second members bearing above the origin of its scale a compass rose which carries a drift scale which measures the angle between the ground speed scale and the true air speed scale, the three members lying in parallel juxtaposed planes, and only two connections being provided, one of the connections connecting two of the above members together at the origins of their scales by a connection having one rotational degree of freedom, and the other of the connections connecting the remaining member to one of the other two members at the origin of its scale by a connection having one translational degree of freedom and one rotational degree of freedom.