US3976292A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Suction shafts for a paper counting apparatus
Assignee: Laurel Bank Machine Co Ltd
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Filing: 1975-03-19
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Granted: 1976-08-24
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Expires: 1995-03-19
Abstract
Abstract A plurality of suction shafts are rotatably mounted in a rotatable cylinder which is driven counter-clockwise. Each of the suction shafts is rotatably driven clockwise and is provided with a curved suction surface having its axis of curvature in a plane perpendicular to the rotational axis thereof. Openings are formed in the curved suction surfaces for communicating a vacuum pump through the interiors of the suction shafts with the atmosphere.
Inventors
- 👤 Minoru Yoshida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:35
CPC Classifications
B; B65; B65H; B65H3/00; B65H3/42; G; G06; G06M; G06M9/00; G06M9/02; B65H2301/00; B65H2301/30; B65H2301/32; B65H2301/321
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
126 words
Suction shafts used for a paper counting apparatus wherein each of the suction shafts is rotatably mounted in a rotatable cylinder driven counterclockwise and is provided with a curved suction surface having a center of curvature in a plane perpendicular to the axis of rotation of the suction shaft, said suction shafts being rotatably driven clockwise and each provided with an opening extending to the suction surface for communicating with the interior of the suction shaft to apply suction to the foremost paper of a bundle of papers facing the suction surface, the sucked paper being curved longitudinally thereof and folded by a trailing edge of the suction surface in a direction perpendicular to the center of curvature thereof as the suction shaft is rotated clockwise.
Claim 2
Dependent Claim
126 words
Suction shafts used for a paper counting apparatus wherein each of the suction shafts is rotatably mounted in a rotatable cylinder driven counterclockwise and is provided with a curved suction surface having a center of curvature in a plane perpendicular to the axis of rotation of the suction shaft, said suction shafts being rotatably driven clockwise and each provided with an opening extending to the suction surface for communicating with the interior of the suction shaft to apply suction to the foremost paper of a bundle of papers facing the suction surface, the sucked paper being curved longitudinally thereof and folded by a trailing edge of the suction surface in a direction perpendicular to the center of curvature thereof as the suction shaft is rotated clockwise.
Claim 3
Dependent Claim
24 words
Suction shafts claimed in claim 1, wherein each shaft is provided with a flat surface intersecting the curved suction surface at said trailing edge.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |