Patent US3239219A successfully refreshed from Google Patents.
US3239219A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Leveling platform for sheet material
Assignee: Individual
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Filing: 1963-11-13
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Granted: 1966-03-08
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Expires: 1983-11-13
Abstract
No abstract record available.
Inventors
- 👤 Hudson D Reeves
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 11:18
CPC Classifications
B; B65; B65H; B65H1/00; B65H1/04; B65H2801/00; B65H2801/03; B65H2801/21
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A STACK LEVELING UNIT FOR A STACK OF SHEET MATERIAL COMPRISING A HOLLOW, HORIZONTALLY ELONGATED BODY FOR USE AS A SUPPORT, SAID BODY HAVING A TOP WALL CONSTITUTING A SUPPORT SURFACE WITH LONGITUDINALLY SPACED OPENINGS THEREIN, A LEVELING ELEMENT IN EACH OPENING MOVABLY MOUNTED UPON SAID BODY VERTICAL MOVEMENT BETWEEN A RETRACTED POSITION WITHIN ITS OPENING AND EXTENDED POSITION PROJECTING ABOVE SAID TOP WALL, ACTUATING MEANS, ONE CONNECTED TO EACH ELEMENT DISPOSED IN SAID HOLLOW BODY, EACH ELEMENT BEING PIVOTALLY MOUNTED UPON SAID BODY, AND MEANS FOR ADJUSTING THE SPACING BETWEEN SAID ELEMENTS WHEREBY EACH ELEMENT MAY BE ADJUSTED TO ENGAGE AND LIFT A CORNER OF A STACK OF SHEETS.
Claim 2
Dependent Claim
110 words
A STACK LEVELING UNIT FOR A STACK OF SHEET MATERIAL COMPRISING A HOLLOW, HORIZONTALLY ELONGATED BODY FOR USE AS A SUPPORT, SAID BODY HAVING A TOP WALL CONSTITUTING A SUPPORT SURFACE WITH LONGITUDINALLY SPACED OPENINGS THEREIN, A LEVELING ELEMENT IN EACH OPENING MOVABLY MOUNTED UPON SAID BODY VERTICAL MOVEMENT BETWEEN A RETRACTED POSITION WITHIN ITS OPENING AND EXTENDED POSITION PROJECTING ABOVE SAID TOP WALL, ACTUATING MEANS, ONE CONNECTED TO EACH ELEMENT DISPOSED IN SAID HOLLOW BODY, EACH ELEMENT BEING PIVOTALLY MOUNTED UPON SAID BODY, AND MEANS FOR ADJUSTING THE SPACING BETWEEN SAID ELEMENTS WHEREBY EACH ELEMENT MAY BE ADJUSTED TO ENGAGE AND LIFT A CORNER OF A STACK OF SHEETS.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |