ROBERT C RITCHIE
Gas Fitter in Braintree, MA
License number
Massachusetts 749
Expiration Date
May 1, 2002
Type
Master Gas Fitter
Address
Address
Braintree, MA 02184
Professional information
Refrigerant Cooled Plastic Molding, Method And Apparatus
US Patent:
4690789, Sep 1, 1987
Filed:
Mar 13, 1985
Appl. No.:
6/711546
Inventors:
Robert C. Ritchie - Braintree MA
Henry J. McKone - Francestown NH
Richard H. Stamm - Mt. Prospect IL
Henry J. McKone - Francestown NH
Richard H. Stamm - Mt. Prospect IL
Assignee:
Dart Industries Inc. - Northbrook IL
Energy Systems Industries, Inc. - Newton MA
Energy Systems Industries, Inc. - Newton MA
International Classification:
B29C 3504, B29C 4572, B29C 4576
US Classification:
264 401
Abstract:
Method and Apparatus for cooling a mold having plural parallel cooling passages therethrough, the mold having flow control means at the inlet and sight glasses at the outlets and being arranged for overfeed so that liquid is always present in all cooling passages to avoid hot spots in the mold.