US4069728A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sheet slitting apparatus
Assignee: Xerox Corp
•
Filing: 1977-03-02
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Granted: 1978-01-24
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Expires: 1997-03-02
Abstract
Abstract Sheet slitting apparatus which includes a plurality of belt members each having a clamp to receive the leading edge of a sheet to be slit. The clamps are urged downwardly by the action of guide members arranged in the belt path to grip the sheet securely during the slitting operation. The clamps are released after slitting is completed.
Inventors
- 👤 James E. McCrea
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:57
CPC Classifications
B; B23; B23D; B23D33/00; B23D33/02; B65; B65H; B65H35/00; B65H35/02; B65H5/00; B65H5/08; Y; Y10; Y10T; Y10T83/00; Y10T83/647; Y10T83/654; Y10T83/6584; Y10T83/6606; Y10T83/6608; Y10T83/6622; Y10T83/6625; Y10T83/6627
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
149 words
Sheet slitting apparatus comprising: a pluarlity of belt members for receiving sheets to be slit, each of said belt members including at least one clamping means receiving the leading edge of the sheet, drive means for moving said belt means to pull the sheet along a predetermined path past a slitting station, guide means arranged along the sheet path to force said clamping means to close securely at the leading edge of the sheet received therein prior to the sheet arriving at said slitting station, slitting apparatus positioned in the sheet path at the slitting station to effect slitting of the moving sheet while being pulled by said belt members and clamping means, said guide means extending for a predetermined extent past the slitting station whereby said clamping means are released upon continued advance of said belt members to release the sheet therefrom after completion of the slitting operation.
Claim 2
Dependent Claim
149 words
Sheet slitting apparatus comprising: a pluarlity of belt members for receiving sheets to be slit, each of said belt members including at least one clamping means receiving the leading edge of the sheet, drive means for moving said belt means to pull the sheet along a predetermined path past a slitting station, guide means arranged along the sheet path to force said clamping means to close securely at the leading edge of the sheet received therein prior to the sheet arriving at said slitting station, slitting apparatus positioned in the sheet path at the slitting station to effect slitting of the moving sheet while being pulled by said belt members and clamping means, said guide means extending for a predetermined extent past the slitting station whereby said clamping means are released upon continued advance of said belt members to release the sheet therefrom after completion of the slitting operation.
Claim 3
Dependent Claim
20 words
Apparatus according to claim 1 wherein the portion of said guide means is adjustable vertically relative to the sheet path.
Claim 4
Dependent Claim
52 words
Apparatus according to claim 2 wherein said clamping means includes flexible two-legged member secured to its associated belt member including a first leg portion of said member is disposed in a plane parallel to the path of said belt member and a second leg portion extends at an acute angle relative thereto.
Claim 5
Dependent Claim
16 words
Apparatus according to claim 3 wherein said second leg portion has a pad member secured thereto.
Claim 6
Dependent Claim
29 words
Apparatus according to claim 3 wherein said clamping means includes a roller member disposed at the top of said leg portion for riding in contact with said guide means.
References Cited (Backward Citations)
US2996982A
Cited
US3200687A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-23 | 1981-07-25 | 1982-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-23 | 1985-07-25 | 1986-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-23 | 1989-07-25 | 1990-01-24 | $7700.00 | Window Closed / Lapsed |