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. 28, 2014
Filed:
Feb. 17, 2010
Applicant:
Per E. Fenger, Terndrup, DK;
Inventor:
Per E. Fenger, Terndrup, DK;
Assignee:
Liftra ApS, Aalborg, DK;
Primary Examiner:
Int. Cl.
CPC ...
F03C 4/00 (2006.01); F04C 2/00 (2006.01); F04C 18/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A hydraulic motor or pump () that generates a relatively high torque, and further allows an unprecedented high specific displacement that makes the motor suitable yaw motor for large wind turbines of horizontal axis wind turbines or wheel yaw motor on Heavy Carriers. The characteristic by the hydraulic motor or pump () is that if the number of barriers in the annular cavity () of engine or pump is n then the number of radial displaceable sliders () will be larger than (n+1).