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US3700099A Expired / Lapsed US ⏱️ 0.0 years remaining

End roll protector

Assignee: Individual
•
Filing: 1970-11-03
•
Granted: 1972-10-24
•
Expires: 1990-11-03
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Abstract

Abstract This invention relates to protectors for the ends of rolls of flexible sheet or strip. These protectors consist of discs having a central coaxial extension adapted to be frictionally retained in the hollow core of the roll. They serve to protect the sheet or strip against damage and reduce the wrapping required for the roll.

Inventors

  • 👤 J Omer Heroux

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-01 07:38
CPC Classifications
B; B65; B65D; B65D59/00; B65D59/02; B65D85/00; B65D85/67; B65D85/671; B65D85/672; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/185

Claims Analysis

Total Claims: 3
Claim 1
Independent Claim 223 words
End protectors for a roll of pliable sheet material wound on an inner tube, said roll having substantially flat end faces and said inner tube slightly protruding from said end faces, each said end protector made of a one-piece molded member of expanded cellular synthetic resin consisting of a disc having an inner and an outer face, and of an extension of outer cylindrical shape, protruding from the inner face of said disc and co-axial therewith, said disc and extension having a cylindrical through bore co-axial therewith, said disc having a flat and continuous outer surface, except for the opening defined by said through bore, said inner face of said disc having an annular groove adjacent the external surface of said extension, but being otherwise flat and continuous, said disc having a diameter at least equal to the diameter of said roll, said extension protruding from said disc inner face a distance between one-tenth and one-eighth the diameter of said disc and adapted to frictionally and removably engage said inner tube with the protruding end of said tube fitting said annular groove and with said inner flat face against the end face of said roll, said roll, when fitted with such end protectors, being adapted to be stood on end on a flat horizontal support surface and one on top of the other.
Claim 2
Dependent Claim 223 words
End protectors for a roll of pliable sheet material wound on an inner tube, said roll having substantially flat end faces and said inner tube slightly protruding from said end faces, each said end protector made of a one-piece molded member of expanded cellular synthetic resin consisting of a disc having an inner and an outer face, and of an extension of outer cylindrical shape, protruding from the inner face of said disc and co-axial therewith, said disc and extension having a cylindrical through bore co-axial therewith, said disc having a flat and continuous outer surface, except for the opening defined by said through bore, said inner face of said disc having an annular groove adjacent the external surface of said extension, but being otherwise flat and continuous, said disc having a diameter at least equal to the diameter of said roll, said extension protruding from said disc inner face a distance between one-tenth and one-eighth the diameter of said disc and adapted to frictionally and removably engage said inner tube with the protruding end of said tube fitting said annular groove and with said inner flat face against the end face of said roll, said roll, when fitted with such end protectors, being adapted to be stood on end on a flat horizontal support surface and one on top of the other.
Claim 3
Dependent Claim 76 words
End protectors as claimed in claim 1, wherein said central extension has a free end face and further including a separate rigid metal cylindrical sleeve lining the surface of the through bore of each end protector, one end of the sleeve having a radially outwardly extending flange embedded in the material of the associated protector, while the other end of said sleeve is straight and terminates substantially flush with the free end of said central extension.

References Cited (Backward Citations)

US1954848A Cited
DE844633C Cited
US2708031A Cited
US3260362A Cited
US3399761A Cited
US3584819A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1975-10-24 1976-04-24 1976-10-24 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1979-10-24 1980-04-24 1980-10-24 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1983-10-24 1984-04-24 1984-10-24 $7700.00 Window Closed / Lapsed

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