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. 25, 1996
Filed:
Feb. 07, 1994
Ronald Siegrist, Oberuzwil, CH;
Bruno J Stillhard, St. Gallen, CH;
HPM Corporation, Mount Gilead, OH (US);
Abstract
An acceleration pressure is used as set value for the movement of the mass which is to be shifted, such as the mold clamping unit in an injection molding machine. For this purpose it is proposed to use preferably an electrically modulated pressure control valve for the pressure regulating device in the pressure drive system. Even with extremely short acceleration periods resonance oscillations are avoided, which until now prohibited the reduction of the acceleration period. With computing devices the movement of the mass can now be really controlled in relation to a selected velocity profile and/or a position profile or at least a part thereof.