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:
Sep. 15, 1987
Filed:
Apr. 21, 1986
Keijo Hellgren, Vasteras, SE;
ASEA AB, Vasteras, SE;
Abstract
A forming press of the pressure cell type comprising a press stand with two opposing force absorbing elements defining between them a working space into which a trough with forming tools and workpiece can be inserted; a press plate in communication with a pressure medium source; a diaphragm forming together with the press plate an expansible pressure cell; and side pieces extending along the side surfaces of the working space while keeping the diaphragm in abutment against a sealing ring disposed around the periphery of the diaphragm, said sealing ring in turn abutting against the press plate, providing thereby a quicker and simpler diaphragm exchange as compared to prior art constructions by the side pieces being turnable so that when upwardly swung, their long sides abut against the underside of the diaphragm, and by means for moving the unit formed of upwardly swung side pieces and diaphragm out of the working space; the invention also including a process for changing diaphragms in said forming press.