|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||720/59 ; 702/062 ; 294/211|
|발명자 / 주소|
|출원인 / 주소|
|대리인 / 주소||
|인용정보||피인용 횟수 : 9 인용 특허 : 15|
A tube member is placed in a die having a plurality of nodules formed in the cavity thereof. A chamber is formed between a mandrel and end piece within the tube. The mandrel is positioned adjacent a first of the nodules and the chamber is pressurized during a hydroforming cycle to form a node on the tube by simultaneously expanding a portion of the tube outward and feeding the tube linearly into the die cavity. A mechanism for feeding the tube linearly is external to the die cavity and has a member in abutment with one end of the tube. During a positioni...
[ What is claimed is:] [1.] An apparatus for hydroforming nodes on a tubular member comprising:die means having a cavity with a plurality of spaced nodules;a tube member disposed in the cavity having first and second end portions and a first of said end portions extending outboard of the cavity;pressure sealing means disposed in said tube member and cooperating with said tube member to form a chamber, said pressure sealing means including a mandrel;means for pressurizing said chamber, including a passage through a portion of said pressure sealing means, ...