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. 28, 1994
Filed:
Feb. 02, 1993
Jacques Prevost, Coueron, FR;
ACB, Paris, FR;
Abstract
A press for compressing drums of contaminated waste. The press comprises a frame made up of a table and a crosshead connected to the table by means of vertical supports, and a compression assembly including a main cylinder secured to the crosshead. A main piston is situated inside the main cylinder and delimits a main chamber between the piston and the cylinder head of the main cylinder. The main piston is extended by a depending ram rod. A skirt is designed to surround the drum when it is being compressed by the ram. The skirt is extended at its top by a tubular piston slidably received in the main cylinder between the main cylinder and the ram rod. An intermediate chamber is delimited between the tubular piston and the main piston. An annular chamber is delimited between the tubular piston and the bottom of the main cylinder. The main chamber and the annular chamber have ducts fed with a control fluid, and the intermediate chamber has a sealed sliding device for enabling the intermediate chamber to be fed with the control fluid.