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. 13, 1976
Filed:
Mar. 28, 1975
Luc Andre Tagnon, Saint Mande, FR;
Essilor International (Compagnie Generale d'Optique), Joinville-le-Pont, FR;
Abstract
This adjustable base, notably for topometric and similar apparatus, comprises a case, a movable member in said case having a substantially vertical axis and bearing on the bottom of said case through three balls, a pair of screws perpendicular to each other for adjusting the verticality of the axis of said movable member, at least one return spring, a pair of passages formed partly in the bottom of said case and partly in the opposite lower face of the movable member, the first passage being defined by a flat surface and by a V-sectioned groove converging toward each other in the direction of a first one of the three balls, the second passage being defined by two other V-sectioned grooves converging toward each other in the direction of said first ball, the two other balls being disposed each in a respective one of the two passages, and each adjustment screw engaging the ball disposed in the relevant passage for pivoting the movable member about the first ball.