US5149077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hybrid nudger roll
Assignee: Xerox Corp
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Filing: 1991-06-24
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Granted: 1992-09-22
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Expires: 2011-06-24
Abstract
Abstract A hydrid nudger roll for use in a friction retard feeder includes alternating elastomeric and studded rolls positioned on a support shaft. The outer surface of the elastomeric rolls extends beyond the tips of the studded rolls, but when the elastomeric rolls are deformed against a stack of sheets due to normal force, the tips of the studded rolls extends beyond the outer surface of the elastomeric rolls.
Inventors
- 👤 Michael J. Martin
- 👤 Steven R. Moore
- 👤 Russell J. Sokac
- 👤 Robert P. Siegel
- 👤 Gerald M. Garavuso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:25
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/02; B65H3/06; B65H3/0638; B65H27/00; B65H2401/00; B65H2401/10; B65H2402/00; B65H2404/00; B65H2404/10; B65H2404/11; B65H2404/111; B65H2404/1115; B65H2404/115; B65H2404/1152; B65H2404/13; B65H2404/131; B65H2404/1316; B65H2404/13161; B65H2404/134; B65H2404/1342
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
91 words
A nudger roll for use in a friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a core member; a plurality elastomeric members supported by said core member; and a plurality of studded members supported by said core member, and wherein said plurality of studded members are positioned on said core member alternately with respect to positioning of said plurality of elastomeric members, and wherein tips of said plurality of studded members are just below a plane along the surface of said plurality of elastomeric members.
Claim 2
Dependent Claim
91 words
A nudger roll for use in a friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a core member; a plurality elastomeric members supported by said core member; and a plurality of studded members supported by said core member, and wherein said plurality of studded members are positioned on said core member alternately with respect to positioning of said plurality of elastomeric members, and wherein tips of said plurality of studded members are just below a plane along the surface of said plurality of elastomeric members.
Claim 3
Dependent Claim
23 words
The nudger roll of claim 1, including a torsion spring for applying normal force to said elastomeric member against the stack of substrates.
Claim 4
Dependent Claim
97 words
A nudger roll for use in a friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a core member; a plurality of studded members supported by said core member; a single piece of elastomeric material covering said studded members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said studded member when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
Claim 5
Dependent Claim
97 words
A nudger roll for use in a friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a core member; a plurality of studded members supported by said core member; a single piece of elastomeric material covering said studded members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said studded member when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
Claim 6
Dependent Claim
22 words
The nudger roll of claim 3, wherein said means for applying a normal force to said elastomeric material is a torsion spring.
Claim 7
Dependent Claim
114 words
In a reproduction system adapted to make copies of page image information by transferring the page image information to copy sheets fed from a copy sheet feeder, the improvement in the copy sheet feeder characterized by: a core member; a plurality of studded members supported by said core member; a single piece of elastomeric material covering said studded members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said plurality of studded members when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
Claim 8
Dependent Claim
114 words
In a reproduction system adapted to make copies of page image information by transferring the page image information to copy sheets fed from a copy sheet feeder, the improvement in the copy sheet feeder characterized by: a core member; a plurality of studded members supported by said core member; a single piece of elastomeric material covering said studded members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said plurality of studded members when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
Claim 9
Dependent Claim
143 words
A friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a nudger roll including a core member; a plurality elastomeric members supported by said core member; a plurality of studded members supported by said core member, and wherein said plurality of studded members are positioned on said core member alternately with respect to positioning of said plurality of elastomeric members, and wherein tips of said plurality of studded members are just below a plane along the surface of said plurality of elastomeric members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said plurality of studded members when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
Claim 10
Dependent Claim
143 words
A friction retard feeder for feeding substrates from a stack to a retard mechanism, comprising: a nudger roll including a core member; a plurality elastomeric members supported by said core member; a plurality of studded members supported by said core member, and wherein said plurality of studded members are positioned on said core member alternately with respect to positioning of said plurality of elastomeric members, and wherein tips of said plurality of studded members are just below a plane along the surface of said plurality of elastomeric members; and means for applying a normal force to said elastomeric member and press it against the sheet stack in order to deform said elastomeric material and expose studs of said plurality of studded members when the coefficient of friction between said elastomeric material and the sheets in the stack is less than a predetermined value.
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) | 1995-09-22 | 1996-03-23 | 1996-09-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-09-22 | 2000-03-23 | 2000-09-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-09-22 | 2004-03-23 | 2004-09-22 | $7700.00 | Window Closed / Lapsed |