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:
Jun. 22, 2004
Filed:
Jan. 08, 2003
Applicant:
Inventor:
Mats Hedman, Sparreholm, SE;
Assignee:
Cargine Engineering AB, Helsingborg, SE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F01L 9/02 ;
U.S. Cl.
CPC ...
F01L 9/02 ;
Abstract
A pressure pulse generator comprising a circuit ( ) filled with a pressure fluid, and at least one communication channel ( ) that is connected to the circuit and via which the pressure fluid can flow into and out of the circuit. The pressure pulse generator comprises a first pair ( ) and a second pair ( ) of electrically controlled valves that are connected in series, and the first pair of valves ( ) is arranged in said circuit ( ) upstream the at least one communication channel ( ), and the second pair of valves ( ) is arranged in said circuit ( ) downstream the at least one communication channel ( ).