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:
Apr. 06, 1982
Filed:
Feb. 05, 1980
Applicant:
Inventor:
Charles S Hill, Olney, IL (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H / ; F16H / ; F16D / ;
U.S. Cl.
CPC ...
74774 ; 74773 ; 192 61 ;
Abstract
A fluid braked planetary transmission is disclosed as including a driven sun gear and a plurality of meshing planet pinions carried in a housing and adapted to act as positive displacement pumps, all but one of the pinions also being adapted to act as positive displacement motors. The pump outlets are restricted by an automatic valve to resist rotation of the pinions whereby the housing is rotated, with controlled slippage, by rotation of the sun gear. Pressurized fluid is recirculated to the pinions acting as motors to recoup hydraulic energy which would otherwise be lost.