Plastic and nonmetallic article shaping or treating: processes – Carbonizing to form article – Agglomeration or accretion
Patent
1981-08-24
1983-03-22
Thurlow, Jeffery R.
Plastic and nonmetallic article shaping or treating: processes
Carbonizing to form article
Agglomeration or accretion
264 401, 264 403, 264564, 425140, 425155, 4251742, 4253261, B29D 722
Patent
active
043775403
ABSTRACT:
An internally cooled blown film system, for producing a plastic tube, in which the flow rate of the continuous flow of cooling air through the tube is made directly dependent upon deviation of the tube circumference as determined by transmission and detection of ultrasonic waves from the surface of the tube.
REFERENCES:
patent: 2816837 (1957-12-01), Holsman
patent: 2952875 (1960-09-01), Herrick
patent: 3159698 (1964-12-01), Suh et al.
patent: 3170011 (1965-02-01), Cheney et al.
patent: 3341888 (1967-09-01), Bridge et al.
patent: 3400184 (1968-09-01), Matsuo et al.
patent: 3474160 (1969-10-01), Doering
patent: 3499064 (1970-03-01), Tsuboshima et al.
patent: 3513501 (1970-05-01), Hearns
patent: 3700370 (1972-10-01), Hearns et al.
patent: 3914356 (1975-10-01), Dembiak et al.
patent: 3932080 (1976-01-01), Uemura et al.
patent: 3980418 (1976-09-01), Schott, Jr.
patent: 4061456 (1977-12-01), Mulder
patent: 4152380 (1979-05-01), Graves et al.
patent: 4189288 (1980-02-01), Halter
patent: 4236884 (1980-12-01), Schott, Jr.
patent: 4243363 (1981-01-01), Mulcahy
patent: 4325897 (1982-04-01), Zerle et al.
"Ultrasonic Ranging Systems", Polaroid Corporation, Jul. 1980.
C. Biber et al., "The Polaroid Ultrasonic Ranging System", Polaroid Corporation, pp. 2-11 and FIGS. 1-19.
Polaroid, "Technical Specifications for Polaroid Electrostatic _Transducer".
Maslin, Gerald D., Polaroid Corporation form letter regarding Ultrasonic Ranging System.
Horneman, Anton, "Polaroid's SX-70 Technology: Sonar for Inventors", Science & Mechanics, Pub. 106, 1980.
Cluett Ronald D.
Mitchell Richard L.
Gloucester Engineering Co. Inc.
Thurlow Jeffery R.
LandOfFree
Control of tubular film size does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Control of tubular film size, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Control of tubular film size will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1868955