Metal working – Plural diverse manufacturing apparatus including means for... – Binding or covering and cutting
Reexamination Certificate
1998-11-12
2001-05-29
Briggs, William (Department: 3722)
Metal working
Plural diverse manufacturing apparatus including means for...
Binding or covering and cutting
C029S03300H, C029S03300H, C029S237000, C029S781000
Reexamination Certificate
active
06237204
ABSTRACT:
This invention relates to a method of producing a tube, for instance a hydraulic tube. provided with a nipple in each end, by means of a machine controlled by a process-computer, which machine comprises a plurality of stations, where machining of the tube shall be made, the tube primary product being rolled up on a roll, which is arranged in a tube roll stand. For carrying out the method a completely new machine has been created, which accordingly also is an integral part of the invention.
According to known technique a tube of a certain dimension and length is today produced in a manual way. In this connection the tube is manually cut off. whereafter the tube ends are peeled and a nipple is put onto each tube end. Finally the tube is blown clean manually. This manual handling is very long-winded and time-consuming and has accordingly the consequence that the conventional handling when producing tubes becomes very ineffective.
This invention intends to make the handling for production of tubes more efficient and this has been made possible by a method and a machine according to the invention, which have The steps and features, mentioned in the claims.
REFERENCES:
patent: 3874048 (1975-04-01), Millar et al.
patent: 4262408 (1981-04-01), Johnson et al.
patent: 4467508 (1984-08-01), Fjällström
patent: 4945632 (1990-08-01), Alman et al.
patent: 5113557 (1992-05-01), Maitra et al.
patent: 21 04 744 (1972-08-01), None
patent: 5-87281 (1993-04-01), None
patent: 6-155194 (1994-06-01), None
Hoglund Goran
Lindstrom Bo
Sjostrom Kerstin
Soderberg Soren
Briggs William
SLX Hydraulic AB
Young & Thompson
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