Winding – tensioning – or guiding – Convolute winding of material – With cutting – perforating – or notching
Reexamination Certificate
1999-10-20
2001-10-23
Nguyen, John Q. (Department: 3653)
Winding, tensioning, or guiding
Convolute winding of material
With cutting, perforating, or notching
C083S542000, C083S553000
Reexamination Certificate
active
06305634
ABSTRACT:
CROSS-REFERENCE TO RELATED APPLICATIONS
Not Applicable.
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT
Not Applicable.
REFERENCE TO A “MICROFICHE APPENDIX”
Not Applicable.
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to track assemblies for cutting tape used in turn up operations in the papermaking industry and particularly to an enclosed track assembly used to minimize contamination of the cutting tape.
2. Related Art
A wide variety of protected track assemblies are known to the art. For example, applicant's U.S. Pat. No. 5,467,937 discloses a movable flap for covering the cutting tape and the guideway that it rests within. Improvements are necessary, however, to provide for greater protection of the tape. In addition, improvements are needed in cutting tape tension control. The devices known to the art are deficient in that they do not provide both features with the same assembly.
BRIEF SUMMARY OF THE INVENTION
In one aspect of the present invention there is provided a track assembly for guiding a cutting tape transversely across a moving web of paper being wound on a roll and transferring the cut web to an empty roll. The assembly includes a track and a track support, the track being an elongated member having an upper portion and a lower portion and a first mounting means for supporting the track on the track support and a longitudinal channel formed in the upper portion for containing a length of a cutting tape therein. The channel is covered by a compressible means along the channel adapted to be compressed to uncover the channel when a cutting tape is exiting the channel. A second mounting means is rigidly affixed to the track for securing the compressible means to the track, the compressible means providing a controlled resistance against a cutting tape exiting to assist in control of a tape spooling on an empty roll. compressible means is formed of a foam material and includes an upper surface and a lower surface, the lower surface extending transversely across the channel.
In other aspects of the invention there is provided a first elongate flap member mounted between the lower surface of the compressible means and the upper portion of the member and extending transversely across the channel and being substantially the length of the track. The first flap member is movable upwardly when a cutting tape is withdrawn from the channel to compress said compressible means, the first flap member has an upper surface and a lower surface, the lower surface of the first flap member frictionally engaging a cutting tape when the tape is being withdrawn from the channel. Securing means for securing the first flap member to the track. A second elongate flap member has an upper surface and a lower surface mounted between the lower surface of the first flap member and the upper surface of the member, the lower surface of the second flap member upwardly movable and frictionally engaging a cutting tape when the tape is exiting the channel.
The track has a proximal end near an operator and a distal end across the width of the web of paper, the compressible means including a first portion adjacent said distal end of the track and a second portion extending from the first portion to the proximal end, the first portion of the compressible means having a relative compressibility different from the relative compressibility of the second portion of said compressible means to provide for two different controlled resistances for controlling the exiting of the cutting tape from the channel. There is also compressed air means for blowing air into the channel when a cutting tape is exiting the channel to keep the channel free of contaminants from the surrounding environment. The track is an elongated member having an upper portion and a lower portion and a first longitudinal channel formed in the lower portion for supporting the track on the track support and a second longitudinal channel formed in the upper portion for containing a length of a cutting tape therein. The second channel being covered by an elongated compressible means adapted to be compressed to uncover the second channel when a cutting tape is exiting the second channel. A thin elongated film member having an upper surface and a lower surface is mounted to the lower surface of the first flap member, the lower surface of the film member upwardly movable and frictionally engaging a cutting tape when the tape is exiting the second channel. The flap members include an inner edge portion and an outer edge portion adjacent the roll and securing means are provided for pivotally mounting a flap member at the inner edge portion to said track. The compressible means and flap member are removably mounted to the track.
REFERENCES:
patent: 5046675 (1991-09-01), Rodriguez
Nguyen John Q.
Sandar Industries, Inc.
Yeager Arthur G.
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