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. 30, 2012
Filed:
Oct. 19, 2009
Applicant:
Robert Francis Larkin, Pittsfield, MA (US);
Inventor:
Robert Francis Larkin, Pittsfield, MA (US);
Assignee:
Berkshire Powertech, Inc., Lee, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16H 47/04 (2006.01); B62D 11/06 (2006.01);
U.S. Cl.
CPC ...
Abstract
An infinitely variable hydromechanical crossdrive steering transmission having a multiple of forward and reverse ratio ranges and a separately selectable low ratio range in both forward and reverse. The forward and reverse ratio ranges are enabled to shift between ratio ranges in a synchronous manner in both speed and torque, thus smoothly propelling the vehicle from rest through the multiple transmission ranges to maximum speed in a stepless manner.