Article: Patent No. 7,581,599 Issued on Sept. 1, Assigned to Atlas Copco Rock Drills for Rock Drill Machine Percussive Device (Swedish Inventor)

Article: WIPO: Inventor in Austria Develops Device for Driving ...
US Fed News Service, Including US State News;  October 10, 2008 ;     391 words ...GENEVA, Oct. 10 - Martin Bernhaupt of Oberalm Austria, has developed a cam and a device for driving piston pumps. According to an abstract posted by the World Intellectual Property Organization, the invention relates to a "device for ...

Article: Finnish Inventors Develop Hydraulic Hammer
US Fed News Service, Including US State News;  December 30, 2006 ;     426 words ... ... sealing bushing which includes a percussion piston that delivers strokes to a tool ... Trademark Office: "A lower part of the percussion piston is sealed with respect to a frame ... contribute to the bearing of the percussion piston and it is arranged in place through ...

Article: Austrian Inventor Develops Vacuum Valve
US Fed News Service, Including US State News;  August 26, 2008 ;     593 words ... ... rotating the shaft. The driving device further comprises a driving piston which is arranged in an inner cavity of the valve disk and ... intermediate position by means of a displacement of the driving piston. At least one spring element displaces the valve disk into ...

Article: French Inventor Develops Hydraulic Rotary-percussive Hammer Drill
US Fed News Service, Including US State News;  June 28, 2007 ;     506 words ... ... hammer drill includes a body containing a reciprocating percussion piston sliding under the effect of a main hydraulic supply circuit ... place this shank a predetermined distance away from the percussion piston and, on the other hand, a rear face facing a rear wall ...

Article: Finnish Inventors Develop Drilling Components Joints Opening ...
US Fed News Service, Including US State News;  November 22, 2006 ;     494 words ... ... interconnected by screw threads and connected to a shank. A percussion piston is reciprocated against the shank during a drilling operation ... said: "When the components are being unscrewed, the percussion piston is actuated to strike the rear end of the drill string ...

Article: German Inventor Develops Hand-Held Power Tool
US Fed News Service, Including US State News;  October 24, 2006 ;     476 words ... ... to a connection rod that connects the eccentric with the driving piston. According to the U.S. Patent & Trademark Office ... and a connection rod connecting the eccentric with the driving piston and having a first part connectable with the eccentric ...

Article: Finnish Inventors Develop Percussion Device Operation Monitoring ...
US Fed News Service, Including US State News;  October 23, 2006 ;     515 words ... ... percussion device, which percussion device comprises a percussion piston and a pressure channel for supplying pressure medium to the percussion device for moving the percussion piston." An abstract of the invention, released by the Patent ...