US5256459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Wound printing sleeve
Assignee: American Roller Co LLC
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Filing: 1992-06-17
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Granted: 1993-10-26
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Expires: 2012-06-17
Abstract
Abstract A printing sleeve comprises a cylindrical tube of polymeric material reinforced with overlapping, closely touching windings of fibrous reinforcing material with at least one winding extending in each direction. The windings are wound in a helical pattern at a wind angle of about 40°.
Inventors
- 👤 James R. Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:43
CPC Classifications
B; B41; B41N; B41N6/00; B41F; B41F27/00; B41F27/10; B41F27/105; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/131; Y10T428/1314; Y10T428/1352; Y10T428/1369; Y10T428/139; Y10T428/24; Y10T428/24058; Y10T428/24074; Y10T428/249921; Y10T428/249922; Y10T428/29; Y10T428/2913; Y10T428/2922; Y10T428/2925
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
205 words
An expandable printing sleeve which is axially mountable on and dismountable from a printing cylinder and which comprises a substantially non-permeable cylindrical tube having a cross-sectional diameter, the tube having a wall with a thickness of about 0.015 to about 0.120 inches and a flexural modulus of at least about 6×10 5 lbs/in 2 , said wall of the tube comprising at least one individual layer of polymeric thermosettting material reinforced by first and second fibrous strands, said first fibrous strand being wound a plurality of turns around a cylindrical mandrel at a positive wind angle of about 35° to about 55° with respect to a central axis of the cylindrical mandrel to form a first helical coil within the layer of polymeric thermosetting material, and said second fibrous strand being wound a plurality of turns around the cylindrical mandrel at a negative wind angle of about 35° to about 55° with respect to the central axis of the cylindrical mandrel to form a second helical coil within the layer of polymeric thermosetting material, one of the first and second helical coils being formed in non-interwoven fashion around the other of the first and second helical coils within the individual layer of polymeric thermosetting material.
Claim 2
Dependent Claim
205 words
An expandable printing sleeve which is axially mountable on and dismountable from a printing cylinder and which comprises a substantially non-permeable cylindrical tube having a cross-sectional diameter, the tube having a wall with a thickness of about 0.015 to about 0.120 inches and a flexural modulus of at least about 6×10 5 lbs/in 2 , said wall of the tube comprising at least one individual layer of polymeric thermosettting material reinforced by first and second fibrous strands, said first fibrous strand being wound a plurality of turns around a cylindrical mandrel at a positive wind angle of about 35° to about 55° with respect to a central axis of the cylindrical mandrel to form a first helical coil within the layer of polymeric thermosetting material, and said second fibrous strand being wound a plurality of turns around the cylindrical mandrel at a negative wind angle of about 35° to about 55° with respect to the central axis of the cylindrical mandrel to form a second helical coil within the layer of polymeric thermosetting material, one of the first and second helical coils being formed in non-interwoven fashion around the other of the first and second helical coils within the individual layer of polymeric thermosetting material.
Claim 3
Dependent Claim
16 words
The printing sleeve of claim 1 in which the polymeric thermosetting material is an epoxy resin.
Claim 4
Dependent Claim
14 words
The printing sleeve of claim 1 in which the fibrous strands are glass filaments.
Claim 5
Dependent Claim
195 words
An expandable printing sleeve which is axially mountable on and dismountable from a printing cylinder, the printing sleeve comprising a substantially non-permeable cylindrical tube having a wall with a cross-sectional diameter thickness of about 0.015 to about 0.120 inches and a flexural modulus of at least about 6×10 5 lbs/in 2 , said wall of the tube being made by the method comprising: winding a first fibrous strand of resin-wetted material a plurality of turns around a cylindrical mandrel at a positive wind angle of about 35° to about 55° with respect to a central axis of the cylindrical mandrel; winding a second fibrous strand of resin-wetted material a plurality of turns around the cylindrical mandrel at a negative wind angle of about 35° to about 55° with respect to the central axis of the cylindrical mandrel; wherein one of the first and second fibrous strands is wound around the other of the first and second fibrous strands in non-interwoven fashion to form two helical coils; and curing the first and second fibrous strands of resin-wetted material to form an individual layer of polymeric thermosetting material reinforced by the first and second non-interwoven fibrous strands.
Claim 6
Dependent Claim
195 words
An expandable printing sleeve which is axially mountable on and dismountable from a printing cylinder, the printing sleeve comprising a substantially non-permeable cylindrical tube having a wall with a cross-sectional diameter thickness of about 0.015 to about 0.120 inches and a flexural modulus of at least about 6×10 5 lbs/in 2 , said wall of the tube being made by the method comprising: winding a first fibrous strand of resin-wetted material a plurality of turns around a cylindrical mandrel at a positive wind angle of about 35° to about 55° with respect to a central axis of the cylindrical mandrel; winding a second fibrous strand of resin-wetted material a plurality of turns around the cylindrical mandrel at a negative wind angle of about 35° to about 55° with respect to the central axis of the cylindrical mandrel; wherein one of the first and second fibrous strands is wound around the other of the first and second fibrous strands in non-interwoven fashion to form two helical coils; and curing the first and second fibrous strands of resin-wetted material to form an individual layer of polymeric thermosetting material reinforced by the first and second non-interwoven fibrous strands.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-10-25 | 1997-04-26 | 1997-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-10-25 | 2001-04-26 | 2001-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-10-25 | 2005-04-26 | 2005-10-26 | $7700.00 | Window Closed / Lapsed |