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. 17, 1980
Filed:
Dec. 26, 1978
Eduard J Huydts, Dueldorf, DE;
Helmut Dischler, Neuss, DE;
G. Siempelkamp GmbH & Co., Krefeld, DE;
Abstract
A screw press comprising a flywheel rotatable continuously in one direction and a pneumatically operated coupling, selectively operable to couple the flywheel to the screw for a working stroke, wherein the coupling has a pressure chamber supplied by way of a one-way valve and dischargeable by the action of an inertial mass which rotates with the screw during its working stroke and inertially relative to the screw at the end of the working stroke to open a discharge orifice of the pressure chamber. A valve piston is moveable axially of the screw in a cylindrical recess, serving as an input chamber for supply air, which valve piston projects into a second chamber, connected to the atmosphere and having an opening, coverable by the valve piston, for supply and discharge of the pressure chamber. The valve piston is provided with at least one through passage having a one-way valve for feeding air from the cylindrical recess input chamber to the pressure chamber, and having a servo-valve operable by the inertial movement of the inertial mass to discharge the input chamber to the atmosphere, the resulting pressure differential across the valve piston causing it to open the pressure chamber discharge orifice.