EP0117092A1
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Plastic core for an elastically shrinkable tubular cover
Assignee: 3M Co
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Filing: 1984-02-03
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Granted: —
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Expires: 2004-02-03
Abstract
Abstract A hollow tubular core for supporting an elastic tubular cover member in a highly radially stretched condition comprises a cylindrical plastic tube having a plurality of circumferentially spaced, axially extending lugs on the inner wall of the tube and a continuous helical cut in the wall of the tube from the exterior surface thereof severing the tube into a continuous narrow strip with only the lugs connected axially along the length of the tube.
Inventors
- 👤 Shigeo C/O Sumitomo 3M Limited Tomioka
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 20:51
CPC Classifications
B; B29; B29C; B29C61/00; B29C61/06; B29C61/0608; B29C61/065; H; H01; H01B; H01B17/00; H01B17/56; H01B17/58; H02; H02G; H02G1/00; H02G1/14; H02G15/00; H02G15/08; H02G15/18; H02G15/182; H02G15/1826; H02G15/1833; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53657; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
157 words
A hollow tubular plastic core for supporting an elastic tubular cover member in a highly radially stretched condition so that the cover member can be positioned over a generally cylindrical object and the core removed to permit the cover member to contract to conform to the outer surface of the object, the core being a plastic tube with an internal diameter greater than the external diameter of the object to be covered and being breakable into a continuous strip (2) by pulling on a free end of the strip that extends back through the tube, characterized in that said tube has a plurality of circumferentially spaced, axially extending lugs (6 or 7) on the inner wall of said tube and that a continuous helical cut (5) in the wall of said tube from the exterior surface thereof severs said tube into said continuous strip (2) with only the lugs connected axially along the length of said tube.
Claim 2
Dependent Claim
157 words
A hollow tubular plastic core for supporting an elastic tubular cover member in a highly radially stretched condition so that the cover member can be positioned over a generally cylindrical object and the core removed to permit the cover member to contract to conform to the outer surface of the object, the core being a plastic tube with an internal diameter greater than the external diameter of the object to be covered and being breakable into a continuous strip (2) by pulling on a free end of the strip that extends back through the tube, characterized in that said tube has a plurality of circumferentially spaced, axially extending lugs (6 or 7) on the inner wall of said tube and that a continuous helical cut (5) in the wall of said tube from the exterior surface thereof severs said tube into said continuous strip (2) with only the lugs connected axially along the length of said tube.
References Cited (Backward Citations)
US3515798A
Cited
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