Patent ID: 6163955
Filing Date: 2000-12-26
Classification: B21D,B23P,Y10T

Abstract:
A machine comprising:a housing including an upper portion and a lower portion,a casing disposed in said lower portion of said housing,at least one tube received in said casing,a plurality of fins received in said casing and engaged around said at least one tube,a frame slidably received in said housing,at least one rod including a first end secured to said frame and moved in concert with said frame, and including a second end having a head provided thereon,means for moving said frame upward and downward in said housing,said head of said at least one rod being moved to engage into said at least one tube and to expand said tube to engage with said fins when said frame and said at least one rod are moved toward said at least one tube,a bracket retractably secured to said frame, said bracket including at least one pipe extended therefrom for slidably receiving said at least one rod,a seat including at least one barrel extended therefrom for slidably receiving said at least one pipe of said bracket, andat least one first actuator coupling said seat to said bracket.