Plastic and nonmetallic article shaping or treating: processes – With measuring – testing – or inspecting – Controlling heat transfer with molding material
Patent
1986-03-11
1987-04-28
Silbaugh, Jan
Plastic and nonmetallic article shaping or treating: processes
With measuring, testing, or inspecting
Controlling heat transfer with molding material
264163, 264320, 425144, 425145, 425298, 425384, 425393, B29C 3108
Patent
active
046613005
ABSTRACT:
A method and apparatus for tipping one end of an I.V. catheter includes the method steps for use of the apparatus including mounting a catheter to be tipped onto a mandrel supported on a carriage; a die having an interior molding surface, at least one portion of which is tapered according to the tip desired on the catheter, is heated; the carriage is moved along guide bars to the die such that the catheter carrying mandrel moves toward the interior molding surface to define a space, when the carriage is halted the catheter carrying mandrel is biased toward the die space with only sufficient force to cause the heated catheter to flow into the die space and as the catheter melts and flows, the mandrel engages the die thereby defining the edge of the catheter, after which the die and catheter therein are cooled; the carriage is then reversed along the guide bars such that the catheter and mandrel are withdrawn from the die, and the catheter is removed from the mandrel. An apparatus for performing the above described method is also disclosed.
REFERENCES:
patent: 3475786 (1969-11-01), Pearson
patent: 4114959 (1978-09-01), Christ
patent: 4292270 (1981-09-01), Hannah et al.
patent: 4373894 (1983-02-01), Peppel
patent: 4404159 (1983-09-01), McFarlane
Becton Dickinson and Company
Fertig Mary Lynn
Passman A.
Silbaugh Jan
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