Metal working – Method of mechanical manufacture – Shaping by direct application of fluent pressure
Patent
1977-11-10
1980-04-01
Gilden, Leon
Metal working
Method of mechanical manufacture
Shaping by direct application of fluent pressure
29523, 72 58, B23P 1700, B21D 3908
Patent
active
041953908
ABSTRACT:
A tube expanding apparatus and method are disclosed utilizing a hollow, elastic, tubular bladder, an elongate connection member positioned within the bladder, a pair of end caps sealably connecting the bladder to the elongate member and forming an annular chamber between the bladder and elongate member in between the end caps, and means for providing fluid communication to the chamber for expanding the bladder against a tubular member. The connection member is disclosed as either a rigid tie rod or an axially inextendible, flexible member. The tie rod has reduced diameter portions adjacent each end forming shoulders and threaded portions at the end thereof for threadibly connecting the end caps thereon and clamping the bladder against the shoulders. An engagement means can be provided at one end of the connection member for urging the tubular member toward the opposite end of the connection member. Tubing is deformed by internally pressurizing it to the extent where the material begins to yield and a bending force is then applied. Outer curved tubing is sleeved internally by moving such an internally pressurized tubular sleeve to a given position and then increasing the internal pressure to expand the sleeve to conform to the curved tubing.
REFERENCES:
patent: 605195 (1898-06-01), Birtwisle
patent: 1930745 (1933-10-01), Fisher
patent: 2861530 (1958-11-01), Macho
patent: 3006066 (1961-10-01), Grossen
patent: 3105537 (1963-10-01), Foster
patent: 3328996 (1967-04-01), Pin et al.
patent: 3358489 (1907-12-01), Hutchins
patent: 3896649 (1975-07-01), Stuart
patent: 4109365 (1978-08-01), Tygart
Gilden Leon
Scientific Technologies, Inc.
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