US4867834A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filament winding system
Assignee: HERCULES
•
Filing: 1988-02-24
•
Granted: 1989-09-19
•
Expires: 2008-02-24
Abstract
Abstract A filament winding system includes a head that selects the number of tows within a winding band while winding and positions the winding band directly on the mandrel according to its contours.
Inventors
- 👤 Brian A. Alenskis
- 👤 Gerald L. Geil
- 👤 Dee R. Gill
- 👤 Brian N. Moloney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:18
CPC Classifications
B; B29; B29C; B29C70/00; B29C70/04; B29C70/28; B29C70/54; B29C70/545; B29C53/00; B29C53/56; B29C53/58; B29C53/583; B29C53/585; B29C53/80; B29C53/8008; B29C53/8016; B29C70/30; B29C70/38; B29C70/382; B29C70/386; B29L; B29L2031/00; B29L2031/30; B29L2031/3076; B29L2031/3082; B29L2031/3085; B29L2031/34; B29L2031/3456; Y; Y10; Y10T; Y10T156/00; Y10T156/12; Y10T156/1317; Y10T156/1322; Y10T156/1348
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
242 words
In a filament winding system for winding rovings, tows, tapes or the like on an irregularly contoured mandrel including a supply unit for feeding a plurality of spaced rovings across a tray and against a delivery device for placement on a rotating mandrel, the improvement being a cut and add assembly for selectively cutting tows for reducing the number of tows applied to the mandrel and for selectively resuming the feed of the cut tows in accordance with the contour of the mandrel, a pair of slots extending across said tray of a length corresponding to the path of movement of the tows, said cut and add assembly comprising a cutting device associated with one of said slots and a clamping device associated with the other of said slots, said cutting device comprising an anvil positioned on one side of said tray in line with said one slot and a knife positioned on the other side of said tray in line with said anvil and vertically movable into said one slot for contacting said anvil, said clamping device comprising an idler roller positioned on one side of said tray in line with said other of said slots, said idler roller being positioned for being contacted and driven by said uncut tows, a splice roller being positioned on the other side of said tray in line with said idler roller, and said splice roller being vertically movable into contact with said idler roller.
Claim 2
Dependent Claim
242 words
In a filament winding system for winding rovings, tows, tapes or the like on an irregularly contoured mandrel including a supply unit for feeding a plurality of spaced rovings across a tray and against a delivery device for placement on a rotating mandrel, the improvement being a cut and add assembly for selectively cutting tows for reducing the number of tows applied to the mandrel and for selectively resuming the feed of the cut tows in accordance with the contour of the mandrel, a pair of slots extending across said tray of a length corresponding to the path of movement of the tows, said cut and add assembly comprising a cutting device associated with one of said slots and a clamping device associated with the other of said slots, said cutting device comprising an anvil positioned on one side of said tray in line with said one slot and a knife positioned on the other side of said tray in line with said anvil and vertically movable into said one slot for contacting said anvil, said clamping device comprising an idler roller positioned on one side of said tray in line with said other of said slots, said idler roller being positioned for being contacted and driven by said uncut tows, a splice roller being positioned on the other side of said tray in line with said idler roller, and said splice roller being vertically movable into contact with said idler roller.
Claim 3
Dependent Claim
29 words
The system of claim 1 including means for selectively moving said knife and said splice roller across and beneath said tray for selective positioning with respect to the tows.
Claim 4
Dependent Claim
34 words
The system of claim 2 wherein said means for selectively moving comprises a ball screw, a carriage mounted to said ball screw, and said knife and said splice roller being mounted to said carriage.
Claim 5
Dependent Claim
20 words
The system of claim 1 wherein said assembly includes solenoids for selectively vertically moving said knife and said splice roller.
Claim 6
Dependent Claim
27 words
The system of claim 4 including a plurality of troughs in the upper surface of said tray whereby each tow may be guided in a respective trough.
Claim 7
Dependent Claim
39 words
The system of claim 5 wherein said delivery device includes a plurality of delivery rollers mounted at the downstream end of said tray in line with said troughs for contacting the mandrel and positioning the tows on the mandrel.
Claim 8
Dependent Claim
35 words
The system of claim 1 including a manipulator having three axes rotation and connected to said assembly for controlling the position of said delivery rollers to maintain said delivery rollers in contact with the mandrel.
Claim 9
Dependent Claim
30 words
The system of claim 1 wherein said anvil is positioned above said tray, said idler roller being positioned above said tray, and said splice roller being positioned below said tray.
Claim 10
Dependent Claim
17 words
The system of claim 1 wherein said idler roller extends completely across the path of the rovings.
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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) | 1992-09-18 | 1993-03-20 | 1993-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-18 | 1997-03-20 | 1997-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-18 | 2001-03-20 | 2001-09-19 | $7700.00 | Window Closed / Lapsed |