US3826485A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for sucking up and lifting the uppermost sheet material from a stack of such sheet materials
Assignee: Pilot Corp
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Filing: 1973-02-09
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Granted: 1974-07-30
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Expires: 1993-02-09
Abstract
Abstract A sheet material is sucked at one end and at an intermediate portion between the central portion and the other end thereof, wherein said one end of the sheet material is lifted initially while the sheet material is pressed downwardly at a portion between the sucked portions to cause the sheet material to have a bend between the sucked portions.
Inventors
- 👤 M Shindo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:21
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/08; B65H3/0808; B65H3/0816; B65H3/46; B65H2301/00; B65H2301/50; B65H2301/51; B65H2301/512; B65H2301/5121
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
201 words
An apparatus for sucking up the uppermost one of a plurality of stacked sheet materials comprising at least first and second suction means each provided at the lower end thereof with a suction member, said first suction means being disposed above one end of the stacked sheet materials while said second suction means is disposed above the intermediate portion between the other end of the stacked sheet materials and the central portion of the stack, at least one pressure means for applying pressure upon said sheet material, said pressure means being disposed between said two suction means, and means for driving said suction means operative to first move said first suction means upwardly to partially lift up said pressure means by the sucked sheet material and then upwardly move said second suction means, wherein each of said suction means comprises a shaft provided at its bottom end with said suction member, said shaft being slidably extended through guide means secured to an upwardly and downwardly movable support structure and having a stop member secured to the upper end portion thereof, the shaft of said first suction means having a length smaller than that of the shaft of said second suction means.
Claim 2
Independent Claim
201 words
An apparatus for sucking up the uppermost one of a plurality of stacked sheet materials comprising at least first and second suction means each provided at the lower end thereof with a suction member, said first suction means being disposed above one end of the stacked sheet materials while said second suction means is disposed above the intermediate portion between the other end of the stacked sheet materials and the central portion of the stack, at least one pressure means for applying pressure upon said sheet material, said pressure means being disposed between said two suction means, and means for driving said suction means operative to first move said first suction means upwardly to partially lift up said pressure means by the sucked sheet material and then upwardly move said second suction means, wherein each of said suction means comprises a shaft provided at its bottom end with said suction member, said shaft being slidably extended through guide means secured to an upwardly and downwardly movable support structure and having a stop member secured to the upper end portion thereof, the shaft of said first suction means having a length smaller than that of the shaft of said second suction means.
Claim 3
Dependent Claim
79 words
An apparatus as defined in claim 1, wherein said pressure means is positioned between said first and second suction means and is supported from said support structure, said pressure means having a projection always biased downwardly by a spring, said projection having its bottom end positioned at a level lower than the suction member of said first suction means and higher than the suction member of said second suction means when said support structure is in its lifted position.
Claim 4
Dependent Claim
20 words
An apparatus as defined in claim 1, wherein a tension spring extends between each stop member and said support structure.
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) | 1977-07-29 | 1978-01-28 | 1978-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-29 | 1982-01-28 | 1982-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-29 | 1986-01-28 | 1986-07-30 | $7700.00 | Window Closed / Lapsed |