US3705676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air foil conveyor
Assignee: Overly Inc
•
Filing: 1970-03-16
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Granted: 1972-12-12
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Expires: 1990-03-16
Abstract
Abstract A common plenum supplies air to a plurality of parallel air foil nozzles disposed in tandem and operative upon a sheet of material adjacent to the nozzle to convey the sheet relative thereto.
Inventors
- 👤 William F Overly
- 👤 Kenneth J Pagel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:32
CPC Classifications
D; D21; D21G; D21G9/00; D21G9/0063; B; B65; B65G; B65G51/00; B65G51/02; B65G51/03; B65H; B65H20/00; B65H20/14
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
164 words
An air foil conveyor for sheet or web-like material generally required to be air borne, comprising a plenum unit of a width corresponding to the width of the material to be conveyed and of a substantially greater length and having a plurality of air foil nozzles providing discharge orifices in the form of generally parallel slots extending across the unit for substantially the full width thereof and spaced in tandem in the face thereof to direct a high velocity air stream longitudinally thereof in the region between the face of the unit and the material being conveyed, each said slot discharging air generally tangential to a curved surface of said nozzle which merges with a flat surface disposed in a plane parallel to the general plane of travel of the material and extending continuously from one nozzle slot to the next for controlling the flow of air along the surface of the material from air foil nozzle to air foil nozzle of said unit.
Claim 2
Dependent Claim
164 words
An air foil conveyor for sheet or web-like material generally required to be air borne, comprising a plenum unit of a width corresponding to the width of the material to be conveyed and of a substantially greater length and having a plurality of air foil nozzles providing discharge orifices in the form of generally parallel slots extending across the unit for substantially the full width thereof and spaced in tandem in the face thereof to direct a high velocity air stream longitudinally thereof in the region between the face of the unit and the material being conveyed, each said slot discharging air generally tangential to a curved surface of said nozzle which merges with a flat surface disposed in a plane parallel to the general plane of travel of the material and extending continuously from one nozzle slot to the next for controlling the flow of air along the surface of the material from air foil nozzle to air foil nozzle of said unit.
Claim 3
Dependent Claim
16 words
The conveyor of claim 1 employing a plurality of said conveyor units disposed end to end.
Claim 4
Dependent Claim
25 words
The conveyor of claim 1 employing a plurality of said conveyor units facing each other and disposed generally parallel with the material being conveyed therebetween.
Claim 5
Dependent Claim
21 words
The construction of claim 3 in which the conveyor units are curved longitudinally to provide a curvalinear path for the material.
Claim 6
Dependent Claim
22 words
The conveyor of claim 1 in which the plenum unit is curved longitudinally to effect a change in direction for the conveyor.
References Cited (Backward Citations)
US1605067A
Cited
US3127080A
Cited
US2144919A
Cited
US3070901A
Cited
US3085346A
Cited
US3232507A
Cited
US3559301A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-12 | 1976-06-12 | 1976-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-12 | 1980-06-12 | 1980-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-12 | 1984-06-12 | 1984-12-12 | $7700.00 | Window Closed / Lapsed |