Abstract: A method for producing ground surfaces with a hydraulic excavator including a shovel applicable to the surface of the ground, and a lifting cylinder for lifting and lowering the excavator equipment. The lifting cylinder of the excavator equipment is actively connected with at least one work pump via a control device actuated by the operator; and whereby the lifting cylinder is lifted, lowered or blocked depending on the switching position of the control device. For compensating the weight of the excavator equipment and for adjusting an approximately constant pressure of application of the shovel to the surface of the ground as the excavator equipment is moving and working, the lifting side of the lifting cylinder, upon actuation of an actuating element, is automatically acted upon by an adjustable compensation pressure by supplying or evacuating a hydraulic medium.
Type:
Grant
Filed:
July 13, 2000
Date of Patent:
February 17, 2009
Assignee:
Herrn Georg Pletzer
Inventors:
Georg Pletzer, Joachim Waegner, Heinrich Lackenberg
Abstract: A storage and transport apparatus with a substantially rectangular base platform which is provided in each of four corner regions, with a locating socket for releasably receiving a supporting rod is characterised in that at least one of the locating sockets is provided with a releasable locking device for co-operating in a positive and/or non-positive fit with a supporting rod, where the locking device prevents the supporting rod from being removed from the locating socket in a locked state and permits removal in a released state.
Type:
Application
Filed:
November 8, 2007
Publication date:
May 29, 2008
Applicant:
Herrn
Inventors:
Hermann Korte, Rudolf Schomaker, Reinhold Trinczek