Electric heating – Heating devices – Combined with container – enclosure – or support for material...
Patent
1990-10-31
1992-08-04
Reynolds, Bruce A.
Electric heating
Heating devices
Combined with container, enclosure, or support for material...
219424, 425549, B29C 4500
Patent
active
051361418
ABSTRACT:
A sprue bushing with an integral casing construction which as improved heat transfer characteristics and a method of making the same are described. A cylindrical bushing body having a first, preselected uniform diameter has a cavity formed therein which axially extends within the bushing body for a predetermined length. A bushing inner core which is integral with the bushing casing is formed in the cavity and extends between the two ends of the bushing body. One or more heating elements in the form of coil heaters may be inserted into the bushing body cavity and a thermally conductive material is deposited into the cavity to fill the remainder of the cavity. When filled, the bushing body is heated to melt the thermally conductive material around the heating element(s) to form a unified heater assembly in the annular cavity. A melt runner passage is then drilled through the inner core.
REFERENCES:
patent: 4238671 (1980-12-01), Gellert
patent: 4273525 (1981-06-01), Reitan
patent: 4279588 (1981-07-01), Gellert
patent: 4304544 (1981-12-01), Crandell
patent: 4344750 (1982-08-01), Gellert
patent: 4355460 (1982-10-01), Gellert
patent: 4386262 (1983-05-01), Gellert
patent: 4403405 (1983-09-01), Gellert
patent: 4424622 (1984-01-01), Krause
patent: 4557685 (1985-12-01), Gellert
patent: 4576567 (1986-03-01), Gellert
patent: 4583284 (1986-04-01), Gellert
patent: 4635851 (1987-01-01), Zecman
patent: 4642043 (1987-02-01), Schwarzkopf
patent: 4882469 (1989-11-01), Trakas
patent: 4899435 (1990-02-01), Trakas
"Runnerless Molding Heating Components & Assessories" (Tempco Electric Heater Corp.), 1986, pp. 15-20.
Melt Design, Inc.
Reynolds Bruce A.
Switzer Michael D.
LandOfFree
Integral sprue bushing assembly does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Integral sprue bushing assembly, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Integral sprue bushing assembly will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-780083