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:
Jul. 02, 2002
Filed:
Apr. 13, 2001
Mikael Orsén, Åkersberga, SE;
AGA Aktiebolag, Lidingo, SE;
Abstract
The present invention relates to a method and a device for point cooling. The cooling device comprises a cooling channel provided with a defined small end surface ( ) and an outlet valve ( ) separated therefrom, a container ( ) with liquid carbon dioxide and an access conduit ( ) connected to said container ( ) provided with a nozzle ( ) localized to said cooling channel, whereby liquid carbon dioxide is brought to flow from the container out through said nozzle. The invention further comprises to choose the overpressure of the container, adjust the outlet valve ( ) and design the nozzle in such a way that the pressure in the cooling channel ( ) is kept above the so-called triple point of carbon dioxide and that the distance between the nozzle ( ) and the defined small end surface ( ) is adapted so as to substantially gasify the carbon dioxide at said end surface. The device is particularly intended for point cooling of a injection moulded or cast detail ( ) with a sharp edge ( ) or a varying material thickness, whereby the cooling channel ( ) is provided in a moulding tool ( ) intended for the detail.