|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||52/74211 ; 52/4041 ; 52/7421 ; 52/74213|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 23 인용 특허 : 0|
A boxlike body (10) with a rear wall (12) and four side walls (14) is brought into a fixture (34) with the free edges (22) of the side walls pointing downwards. The walls of the body are filled with insulating powder by blowing the powder into the rear wall (12) by gaseous medium of a first pressure. The powder is then packed by gaseous medium of a second pressure, which is higher than the first pressure, being let into the rear wall. During the filling and packing the media is let out via a filter element (24) arranged at the free edges (22) of the side...
Method for filling and packing insulating powder in hollow walls of a boxlike body (10) and then evacuating gaseous medium from the walls, so that the powder forms a vacuum insulation in the walls (14), the body (10) having a rear wall (12) and four side walls (14), said method comprising the steps of supporting the inner and outer sides of the walls in a fixture (34) with free edges (22) of the side walls pointing downwards, filling the walls by blowing the powder (46) into the rear wall (12) by gaseous medium of a first pressure, packing the powder by ...