US3945583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rewind shaft
Assignee: Tidland Corp
•
Filing: 1974-10-10
•
Granted: 1976-03-23
•
Expires: 1994-10-10
Abstract
Abstract An improved rewind shaft of a web slitting machine has a long shaft portion supporting cores which are held in exact positions and against movement along the shaft by a retaining sleeve held against longitudinal movement relative to the rewind shaft by an expansible air shaft segment forming a detachable end portion of the rewind shaft.
Inventors
- 👤 Gordon M. Ochs
- 👤 Raymond L. Wheeler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:50
CPC Classifications
B; B65; B65H; B65H75/00; B65H75/02; B65H75/18; B65H75/24; B65H75/242; B65H75/243; B65H75/2437
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
140 words
In a rewind shaft, an elongated tube of a predetermined length having a first end and a second end, a first journal means detachably secured to the first end of the tube, a stop collar on the first journal means projecting radially beyond the outer periphery of the tube, an expansible shaft segment of a length a small fraction of that of the tube, attachment means releasably securing the shaft segment to the second end of the tube, and a second journal means secured to the shaft segment at an end thereof remote from the tube, a sleeve for holding a series of fiber cores on the tube between the sleeve and the stop collar, the expansible shaft segment serving to hold said sleeve against endwise movement relative to said tube, whereby said fiber cores are held against endwise movement.
Claim 2
Dependent Claim
140 words
In a rewind shaft, an elongated tube of a predetermined length having a first end and a second end, a first journal means detachably secured to the first end of the tube, a stop collar on the first journal means projecting radially beyond the outer periphery of the tube, an expansible shaft segment of a length a small fraction of that of the tube, attachment means releasably securing the shaft segment to the second end of the tube, and a second journal means secured to the shaft segment at an end thereof remote from the tube, a sleeve for holding a series of fiber cores on the tube between the sleeve and the stop collar, the expansible shaft segment serving to hold said sleeve against endwise movement relative to said tube, whereby said fiber cores are held against endwise movement.
Claim 3
Dependent Claim
17 words
The rewind shaft of claim 1 wherein the expansible shaft segment comprises an expansible air shaft segment.
Claim 4
Dependent Claim
31 words
The rewind shaft of claim 2 wherein the air shaft includes a plurality of radially expansible lugs and an expansible tube for pushing the lugs outwardly into engagement with the sleeve.
Claim 5
Dependent Claim
39 words
The rewind shaft of claim 1 wherein the attachment means includes an internally threaded bushing fixed rigidly in the tube, an externally threaded end member fixed rigidly to the expansible shaft segment and threadedly engaging the internally threaded bushing.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |