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:
Feb. 01, 2005
Filed:
Jun. 03, 2003
Applicants:
Jimmy Johansson, Sturefors, SE;
Joakim Bärnström, Linkoping, SE;
Inventors:
Jimmy Johansson, Sturefors, SE;
Joakim Bärnström, Linkoping, SE;
Assignee:
BT Industries, , SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F16D 3102 ;
U.S. Cl.
CPC ...
Abstract
Method to control the lowering movement of the lifting cylinder or cylinders () of a truck. When a lowering is to take place the pump () is started in the pumping direction for increasing the pressure between the pump and a loadholding valve () until essentially the pressure has been achieved as in the hydraulic cylinder (), whereafter the pump with its motor is switched over to regenerative operation, that is the pump works as motor and the motor as generator. The holding valve () is opened so that the oil while driving the pump can flow back through this.