ROBERT JOHN BASSO
Pilots at Ln Cruz Dr, La Mesa, CA
License number
California A0104101
Issued Date
May 2016
Expiration Date
May 2018
Category
Airmen
Type
Authorized Aircraft Instructor
Address
Address
4810 La Cruz Dr, La Mesa, CA 91941
Professional information
Process For Producing Composite Tubular Parts
US Patent:
5795524, Aug 18, 1998
Filed:
Mar 28, 1997
Appl. No.:
8/825361
Inventors:
Robert J. Basso - La Mesa CA
Wayne E. Hogarth - Huntington Beach CA
Wayne E. Hogarth - Huntington Beach CA
International Classification:
B29C 7028
US Classification:
264221
Abstract:
A mandrel is fitted with a molded sleeve of low-temperature alloy for forming a rigid bulge along the surface of the mandrel. The sleeve is shaped to define the internal surface of the shell at the bulge. After the mandrel has been so modified with the low-temperature alloy sleeve, it is wrapped with composite cloth containing any thermosetting resin. These resins heat to a known temperature, and permanently set when cured at the set temperature. The curing temperature of the prepreg cloth composite material is lower than the melting point of the low temperature alloy. After curing, the temperature in the curing oven is raised above the cure temperature until it reaches the melting point of the low-temperature alloy, and the alloy liquifies and drains out the drain passageways provided in the mandrel without melting the thermoset resin binder in the fiber cloth as well as leaving the bulge formed by the composite cloth in the shell without obstructing the removal of the mandrel. The resulting composite tubular shaft is thus provided with a bulge of increased diameter. The shafts may be tapered on the external surface or they may have a varied internal diameter.
Mandrel For Producing Composite Tubular Parts
US Patent:
6036470, Mar 14, 2000
Filed:
May 13, 1998
Appl. No.:
9/076876
Inventors:
Robert J. Basso - La Mesa CA
Wayne E. Hogarth - Huntington Beach CA
Wayne E. Hogarth - Huntington Beach CA
International Classification:
B29C 3352
US Classification:
425470
Abstract:
A mandrel is fitted with a molded sleeve of low-temperature alloy for forming a rigid bulge along the surface of the mandrel. The sleeve is shaped to define the. internal surface of the shell at the bulge. After the mandrel has been so modified with the low-temperature alloy sleeve, it is wrapped with composite cloth containing any thermosetting resin. These resins heat to a known temperature, and permanently set when cured at the set temperature. The curing temperature of the prepreg cloth composite material is lower than the melting point of the low temperature alloy. After curing, the temperature in the curing oven is raised above the cure temperature until it reaches the melting point of the low-temperature alloy, and the alloy liquifies and drains out the drain passageways provided in the mandrel without melting the thermoset resin binder in the fiber cloth as well as leaving the bulge formed by the composite cloth in the shell without obstructing the removal of the mandrel. The resulting composite tubular shaft is thus provided with a bulge of increased diameter. The shafts may be tapered on the external surface or they may have a varied internal diameter.