Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Measuring – testing – or inspecting
Reexamination Certificate
2005-03-08
2005-03-08
McDowell, Suzanne E. (Department: 1732)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Measuring, testing, or inspecting
C264S040100, C264S523000, C425S141000, C425S174400, C425S538000, C356S632000, C356S239400, C250S341800
Reexamination Certificate
active
06863860
ABSTRACT:
A method of inspecting wall thickness of blow-molded plastic containers includes providing a blow-molder having a plurality of molds and a plurality of associated spindles. The containers are inspected by impinging infrared light thereon and detecting the portion of the infrared light that passes through the container and converting the same into corresponding electrical signals which are delivered to a microprocessor. The microprocessor compares the electrical signals with stored information regarding desired wall thickness of the container and emits output thickness information. The microprocessor receives signals from sensors associated with the blow-molder relating to the position of the molds, the identity of the molds and the identity of the spindles in order that the wall thickness information that is determined by inspection can be associated with specific molds and spindles. The wall thickness information may be averaged over a period of time or a number of containers. The information may be visually displayed so as to provide feedback regarding the inspection process. In a preferred embodiment wall thickness measurements are taken at several vertically spaced positions simultaneously. Corresponding apparatus is provided.
REFERENCES:
patent: 3439178 (1969-04-01), Rottmann
patent: 3923158 (1975-12-01), Fornaa
patent: 4304995 (1981-12-01), Huttunen et al.
patent: 4332606 (1982-06-01), Gardner
patent: 4476533 (1984-10-01), Daudt et al.
patent: 4490612 (1984-12-01), Tormala
patent: 4639263 (1987-01-01), Kulikauskas
patent: 4691830 (1987-09-01), Ahl et al.
patent: 4762544 (1988-08-01), Davey
patent: 5139406 (1992-08-01), Hoshino et al.
patent: 5591462 (1997-01-01), Darling et al.
patent: WO 0165204 (2001-09-01), None
AGR-TOPWAVE, LLC, Pet Wall, pp. 1-2, Butler, PA, USA.
AGR-TOPWAVE, LLC, Profiler Gauge PG9800, pp. 1-4, Butler, PA USA.
Zarnick, 100%On-Line Inspection for the PET Container Industry, Presented at SPE Conference/Plastics West in Las Vegas, NV on Oct. 4, 1990 and SPE Conference in Belin, Germany on Oct. 22-25, 1990, pp. 1-7, Figs. 1-7 (18 pages total).
Puvak,Improving Production Performance of PET Containers through the use of On-Line Inspection Systems, pp. 1-8, Figs. 1-8 (19 pages total).
Tormala,High Performance Plastics Packaging, Society of Plastics Engineers International, Oct. 31-Nov. 1, 1989, pp. 1-10, 8 Tests.
Adolfs,ESPRIT, KB-MUSICA (2671), PLAST.140.KRP.1, Sep. 19, 1989, pp. 1-10, Figs. 1-5.
Puvak,Improving PET Production Efficiencies via On-Line Inspection and Rejection of Defective Preforms and Finished Containers, pp. 1-10, Figs. 1-8.
Birckbichler Craig A.
Jebadurai Sudha C.
Puvak Ronald A.
Schmidt William E.
Wolfe Georg V.
AGR International, Inc.
Eckert Seamans Cherin & Mellott , LLC
McDowell Suzanne E.
Silverman Arnold B.
LandOfFree
Method and apparatus for monitoring wall thickness of... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for monitoring wall thickness of..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for monitoring wall thickness of... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3382557