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Title: Crimp sealing of tubes flush with or below a fixed surface

Abstract

An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. 8 figs.

Inventors:
; ;
Issue Date:
Research Org.:
University of California
OSTI Identifier:
372592
Patent Number(s):
5,546,783
Application Number:
PAN: 8-251,421
Assignee:
Dept. of Energy, Washington, DC (United States)
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 20 Aug 1996
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING NOT INCLUDED IN OTHER CATEGORIES; TOOLS; DESIGN; PIPES; SEALS; PRESSURE VESSELS; FABRICATION; CUTTING; INSTALLATION

Citation Formats

Fischer, J E, Walmsley, D, and Wapman, P D. Crimp sealing of tubes flush with or below a fixed surface. United States: N. p., 1996. Web.
Fischer, J E, Walmsley, D, & Wapman, P D. Crimp sealing of tubes flush with or below a fixed surface. United States.
Fischer, J E, Walmsley, D, and Wapman, P D. Tue . "Crimp sealing of tubes flush with or below a fixed surface". United States.
@article{osti_372592,
title = {Crimp sealing of tubes flush with or below a fixed surface},
author = {Fischer, J E and Walmsley, D and Wapman, P D},
abstractNote = {An apparatus for crimp sealing and severing tubes flush or below a fixed surface. Tube crimping below a fixed surface requires an asymmetric die and anvil configuration. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. This asymmetric die and anvil is used when a ductile metal tube and valve assembly are attached to a pressure vessel which has a fixed surface around the base of the tube at the pressure vessel. A flat anvil is placed against the tube. Die guides are placed against the tube on a side opposite the anvil. A pinch-off die is inserted into the die guides against the tube. Adequate clearance for inserting the die and anvil around the tube is needed below the fixed surface. The anvil must be flat so that, after crimping, it may be removed without deforming the crimped tubes. 8 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1996},
month = {8}
}