Patent US3992902A successfully refreshed from Google Patents.
US3992902A
Expired / Lapsed
US
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Support device for cylinder of a circular knitting machine
Assignee: Boeing North American Inc
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Filing: 1975-09-23
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Granted: 1976-11-23
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Expires: 1995-09-23
Abstract
Abstract A support device is provided for an elongated rotatable needle cylinder of a circular knitting machine having vertically located stitch cams where the cylinder has an upper end which supports an array of sinkers and a lower end. The support device includes a rotatable base portion located a predetermined vertical distance below the stitch cams. A plurality of rods extends from the base portion upwardly along the interior of the cylinder and terminates at an upper portion of the support device. The upper portion is secured to the upper end of the cylinder so that the lower end of the cylinder is free to move vertically with respect to the stitch cams when the cylinder expands and contracts during knitting.
Inventors
- 👤 Stephen G. Guresh
- 👤 James Heilig Boyer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 18:45
CPC Classifications
D; D04; D04B; D04B15/00; D04B15/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
140 words
A support device for an elongated, rotatable needle cylinder of a circular knitting machine having vertically located stitch cams, said cylinder having an upper end which supports an array of sinkers at a predetermined height above said stitch cams and a lower end, said support device comprising: a rotatable base portion located at said lower end of said cylinder and at a predetermined vertical distance below said stitch cams, a vertical support structure fixed to said base portion and extending upwardly therefrom along an interior of said cylinder, and an upper portion fixed to said vertical support structure and secured to said cylinder at said upper end, whereby said lower end of said cylinder is free to move vertically with respect to said stitch cams to maintain said predetermined height at a constant value when said cylinder expands and contracts.
Claim 2
Dependent Claim
140 words
A support device for an elongated, rotatable needle cylinder of a circular knitting machine having vertically located stitch cams, said cylinder having an upper end which supports an array of sinkers at a predetermined height above said stitch cams and a lower end, said support device comprising: a rotatable base portion located at said lower end of said cylinder and at a predetermined vertical distance below said stitch cams, a vertical support structure fixed to said base portion and extending upwardly therefrom along an interior of said cylinder, and an upper portion fixed to said vertical support structure and secured to said cylinder at said upper end, whereby said lower end of said cylinder is free to move vertically with respect to said stitch cams to maintain said predetermined height at a constant value when said cylinder expands and contracts.
Claim 3
Dependent Claim
31 words
A support device as set forth in claim 1 wherein said vertical support structure is separated from said cylinder to be generally insulated from the effects of heating of said cylinder.
Claim 4
Dependent Claim
33 words
A support structure as set forth in claim 1 wherein said vertical support structure is composed of a material having a lower coefficient of thermal expansion than does the material of said cylinder.
Claim 5
Dependent Claim
29 words
A support device as set forth in claim 1 wherein said vertical support structure includes a plurality of rods which extend between said base portion and said upper portion.
Claim 6
Dependent Claim
48 words
A support device as set forth in claim 1 wherein said upper end of said cylinder includes a circumferential groove about its interior surface, said groove receives a retaining ring, and said retaining ring rests on said upper portion of said support device as said cylinder depends therefrom.
References Cited (Backward Citations)
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Cited
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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) | 1979-11-23 | 1980-05-24 | 1980-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-11-23 | 1984-05-24 | 1984-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-11-23 | 1988-05-24 | 1988-11-23 | $7700.00 | Window Closed / Lapsed |