US3985277A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Web handling device
Assignee: Xerox Corp
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Filing: 1975-03-26
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Granted: 1976-10-12
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Expires: 1995-03-26
Abstract
Abstract A web forwarding device wherein a web is friction driven by a drive means associated with a web pressure backing roll and a pair of pressure arms. The amount of wrap and tension around the backing roll is controlled by a pair of free floating pivotally mounted and interconnected pressure arms which hold the web on the roll. The pressure arms are adjustably mounted to control the distance between the axis of rotation of the roll and the pivot point.
Inventors
- 👤 Allen T. Wright
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:15
CPC Classifications
B; B65; B65H; B65H20/00; B65H20/02
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
144 words
Web forwarding apparatus comprising a pressure roll mounted for rotation having a peripheral surface suitable for drivingly engaging the web to be forwarded, two pressure arms pivotally mounted about a common pivot means with a nonpivoted end of each arm extending tangentially toward the roller to guide the web to be forwarded into contact with at least a portion of the periphery of the pressure roll, bias means coupled to the pressure arms outside the region between the arms, the pivot means and the pressure roll to urge the arms toward one another into contact with the periphery of the pressure roll and yoke means supporting said common pivot means adapted to be moved radially to and from the axis of rotation of the pressure roll to change the amount of contact between the web being forwarded and the periphery of the pressure roll.
Claim 2
Dependent Claim
144 words
Web forwarding apparatus comprising a pressure roll mounted for rotation having a peripheral surface suitable for drivingly engaging the web to be forwarded, two pressure arms pivotally mounted about a common pivot means with a nonpivoted end of each arm extending tangentially toward the roller to guide the web to be forwarded into contact with at least a portion of the periphery of the pressure roll, bias means coupled to the pressure arms outside the region between the arms, the pivot means and the pressure roll to urge the arms toward one another into contact with the periphery of the pressure roll and yoke means supporting said common pivot means adapted to be moved radially to and from the axis of rotation of the pressure roll to change the amount of contact between the web being forwarded and the periphery of the pressure roll.
Claim 3
Dependent Claim
47 words
The web forwarding apparatus of claim 1 wherein the pressure arms are interconnected by a threaded stud pivotally attached to one of the arms, extending through the other of said arms and including an adjustably positionable lock nut adapted to limit the relative motion of the arms.
Claim 4
Dependent Claim
27 words
The web forwarding apparatus of claim 1 wherein at least one of the pressure arms includes a roller means at the point of contact with the web.
Claim 5
Dependent Claim
22 words
The web forwarding means of claim 3 wherein said roller means is provided with a resilient surface in contact with the web.
Claim 6
Dependent Claim
16 words
The web forwarding means of claim 1 including a drive means which drives the pressure roll.
Claim 7
Dependent Claim
16 words
The web forwarding means of claim 3 including a drive means which drives said roller means.
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) | 1979-10-12 | 1980-04-12 | 1980-10-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-12 | 1984-04-12 | 1984-10-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-12 | 1988-04-12 | 1988-10-12 | $7700.00 | Window Closed / Lapsed |