Plastic article or earthenware shaping or treating: apparatus – With upstream screen or perforated plate for straining,... – Upstream of multi-orifice shaping die
Reexamination Certificate
2007-09-18
2007-09-18
Davis, Robert (Department: 1722)
Plastic article or earthenware shaping or treating: apparatus
With upstream screen or perforated plate for straining,...
Upstream of multi-orifice shaping die
C425S131500, C425S382300, C425S066000, C156S433000, C156S441000, C156S494000, C156S498000
Reexamination Certificate
active
10713967
ABSTRACT:
An assembly for use in continuously forming a plurality of lengths of flexible noise attenuating cutting line for use in rotary vegetation trimmers. The assembly includes a breaker plate having a conically shaped inner portion and a planar outer portion. A plurality of extrusion dies are disposed in the outer portion wherein each die defines a die hold configuration at its lower end for the extrusion of one or more monofilament polymer strands therethrough, and a drive assembly is provided for rotating each of the dies at a predetermined speed such that upon directing a flow of molten monofilament polymer material onto the breaker plate, the material is directed from the inclined central portion onto the planar outer portion where it is extruded through the rotating dies to create a plurality of twisted strands of polymer material that upon cooling, stretching and heating, define lengths of flexible noise attenuating cutting line.
REFERENCES:
patent: 3802821 (1974-04-01), Mott
patent: 3876743 (1975-04-01), Soderlund et al.
patent: 4072457 (1978-02-01), Cooksey et al.
patent: 4186239 (1980-01-01), Mize et al.
patent: 4217083 (1980-08-01), Machuque
patent: 4288463 (1981-09-01), Groff et al.
patent: 4445838 (1984-05-01), Groff
patent: 5346383 (1994-09-01), Starnes, Jr.
patent: 5492706 (1996-02-01), Cockings et al.
patent: 5609903 (1997-03-01), Israel et al.
patent: 5670185 (1997-09-01), Heck et al.
patent: 5807462 (1998-09-01), Proulx
patent: 5814176 (1998-09-01), Proulx
patent: 6051172 (2000-04-01), Fogle
patent: 6284174 (2001-09-01), Ueda et al.
patent: 6434837 (2002-08-01), Fogle
patent: 6450796 (2002-09-01), Groff et al.
patent: 6607772 (2003-08-01), Bortone
patent: 6805543 (2004-10-01), Fux et al.
patent: 6896504 (2005-05-01), Horna et al.
Conley William P.
Proulx Richard A.
Thomason Rodger D.
Davis Robert
Ewald Maria Veronica
Holland & Knight LLP
Lyon, Jr. Richard E.
Proulx Manufacturing, Inc.
LandOfFree
Assembly for use in continuously forming one or more lengths... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Assembly for use in continuously forming one or more lengths..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Assembly for use in continuously forming one or more lengths... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3748849