Synchronized temperature contol of plastic processing equipment

Details Synchronized temperature contol of plastic processing equipment Synchronized temperature contol of plastic processing equipment

2011-08-30

2011-08-30

Sole, Joseph Del (Department: 1743)

Plastic and nonmetallic article shaping or treating: processes

Direct application of electrical or wave energy to work

Extrusion molding

C264S486000, C425S144000, C425S174000

Reexamination Certificate

active

08007709

ABSTRACT:
A system for processing plastic feed material includes a machine having a barrel and a screw that rotates in a repetitive cycle in the barrel. An induction winding encircles and extends along an outer surface of the barrel. A control system includes a controller that determines a duty cycle referenced to a length of the machine cycle in response to an error between a desired barrel temperature and a current barrel temperature. The controller electrically connects the power supply to the induction winding at least once during each cycle for a period whose length corresponds to the duty cycle.

REFERENCES:
patent: 2436993 (1948-03-01), Fisher, Jr.
patent: 3472987 (1969-10-01), Viart
patent: 3640662 (1972-02-01), Schwartz
patent: 3698844 (1972-10-01), Grimm
patent: 3727678 (1973-04-01), Schott, Jr.
patent: 3870445 (1975-03-01), Hold et al.
patent: 4088430 (1978-05-01), Giles
patent: 4183448 (1980-01-01), Nash
patent: 4319871 (1982-03-01), McAlister
patent: 4384514 (1983-05-01), Larivé et al.
patent: 4548341 (1985-10-01), Hambleton
patent: 4642043 (1987-02-01), Schwarzkopf
patent: 4678420 (1987-07-01), Inoue
patent: 4726751 (1988-02-01), Shibata et al.
patent: 4940870 (1990-07-01), Shibata et al.
patent: 5025122 (1991-06-01), Howell
patent: 5051086 (1991-09-01), Gellert
patent: 5387386 (1995-02-01), Kirjavainen
patent: 5403540 (1995-04-01), Brundage et al.
patent: 5430273 (1995-07-01), Bogdanski et al.
patent: 5456870 (1995-10-01), Bulgrin
patent: 5571436 (1996-11-01), Gregg et al.
patent: 5799720 (1998-09-01), Ross et al.
patent: 5820900 (1998-10-01), McGrevy
patent: 5947887 (1999-09-01), White et al.
patent: 5955120 (1999-09-01), Deissler
patent: 5997778 (1999-12-01), Bulgrin
patent: 6120714 (2000-09-01), Allan et al.
patent: 6197437 (2001-03-01), Bielec et al.
patent: 6486445 (2002-11-01), Pendergraft
patent: 6717118 (2004-04-01), Pilavdzic et al.
patent: 6781100 (2004-08-01), Pilavdzic et al.
patent: 7034263 (2006-04-01), Kagan
patent: 7034264 (2006-04-01), Kagan
patent: 7041944 (2006-05-01), Pilavdzic et al.
patent: 2002/0170696 (2002-11-01), Akers et al.
patent: 2006/0197254 (2006-09-01), Onishi
patent: 2008/0136066 (2008-06-01), Taylor et al.
patent: 2774753 (2005-02-01), None
patent: 772424 (1957-04-01), None
patent: 2081171 (1982-02-01), None
patent: 5-286018 (1993-11-01), None
patent: 6-335954 (1994-12-01), None
patent: 2003-071893 (2003-03-01), None
patent: 2003-297538 (2003-10-01), None
Changsha Joy Great Science and Technology,Electromagnetism heating coil introduction, (downloaded from www.eh2005.com.cn), website registered Jan. 4, 2007, 29 pgs., Hunan Province Changsha China.

Affiliated with

Also associated with

Rating

Synchronized temperature contol of plastic processing equipment does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Synchronized temperature contol of plastic processing equipment, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Synchronized temperature contol of plastic processing equipment will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2742543