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. 23, 2018
Filed:
Aug. 17, 2016
Applicant:
Nelson Irrigation Corporation, Walla Walla, WA (US);
Inventor:
Lee A. Perkins, Walla Walla, WA (US);
Assignee:
NELSON IRRIGATION CORPORATION, Walla Walla, WA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B05B 3/00 (2006.01); F16D 57/00 (2006.01); F16D 57/02 (2006.01); B05B 15/70 (2018.01); B60T 10/02 (2006.01); A01G 25/09 (2006.01);
U.S. Cl.
CPC ...
F16D 57/02 (2013.01); B05B 3/005 (2013.01); B05B 15/70 (2018.02); B60T 10/02 (2013.01); F16D 57/007 (2013.01); A01G 25/092 (2013.01);
Abstract
A rotational speed control device includes a housing containing a viscous fluid and a shaft disposed in the housing and rotatable relative to the housing. A rotor may be movable axially on the shaft depending on the rotating speed of the shaft. The rotor is biased in a low torque direction. A braking torque between the rotor and the housing and/or between the rotor and a drive control ring is varied according to an axial position of the rotor on the shaft. The device may incorporate bypass channels to control a circulating pressure of the viscous fluid.