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:
Oct. 22, 2002
Filed:
Dec. 10, 1998
Applicant:
Inventors:
René Laulhe, Villenave d'Ornon, FR;
Claude Wattignier, Talence, FR;
Assignee:
KSB S.A., Gennevbilliers, FR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F15B 1/316 ;
U.S. Cl.
CPC ...
F15B 1/316 ;
Abstract
Mechanism for obtaining a couple for maneuvering a part to make it rotate on itself through a quarter turn, from a member moving along a trajectory, via a transmission such that the curve representing the reduction coefficient, which is the ratio of the maneuvering couple to a nominal couple, shown on the y axis, as a function of the angle of rotation, shown on the x axis, is convex, the curve rotating its convexity upwards and the peak coefficient of reduction being obtained for an angle of about 20 to 40°.