Pipes and tubular conduits – Flexible – Spirally wound material
Reexamination Certificate
2007-10-23
2007-10-23
Brinson, Patrick F. (Department: 3754)
Pipes and tubular conduits
Flexible
Spirally wound material
C138S122000, C239S302000
Reexamination Certificate
active
11285419
ABSTRACT:
The present invention provides tubes for, in an exemplary embodiment, dispensing loose fill insulation. The tube comprises an inner web formed in a tubular shape and having a plurality of spaced helical projections disposed along an inner surface thereof and extending towards a central longitudinal axis of the inner web, the inner surface of the inner web also forming an inner surface of the tube. A cap is disposed around an outer periphery of the inner web. The helical projections serve to condition the insulation as the insulation passes through the tube.
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“PCT Notification of Transmittal of the International Search Report or The Declaration”—International Application No. PCT/US00/01331, (filed Jan. 20, 2000), Date of Mailing: Oct. 13, 2000.
Pentz Edward
Wagner Christophe
Brinson Patrick F.
Certainteed Corporation
Duane Morris LLP
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