Patent US3773391A successfully refreshed from Google Patents.
US3773391A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air conveyor
Assignee: FKI Industries Inc
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Filing: 1971-09-07
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Granted: 1973-11-20
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Expires: 1991-09-07
Abstract
Abstract A conveyor employing a gaseous conveying medium has a modular conveyor deck that provides wide adaptability to materials which may be conveyed, regulation of material flow, and the shape and extent of the conveyor deck. Each conveyor deck module has a combination of orifices to provide the precise gas flow characteristics desired at any point along the deck. The modules may be adjusted, altered, or replaced to modify the conveyor for changes in material being conveyed or the flow pattern thereof.
Inventors
- 👤 R Crandall
- 👤 G Eggert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:24
CPC Classifications
B; B65; B65G; B65G51/00; B65G51/02; B65G51/03
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
120 words
In an air conveyor including a plenum chamber operatively connected to a supply of compressed air, said chamber including a conveying deck, a modular deck member for serial mounting with similar deck members to provide said deck comprising a vane providing an air flow having a resultant force acting substantially horizontal to said deck, a number of laterally spaced apertures providing an air flow having a resultant force acting substantially perpendicular to said deck, a number of laterally spaced slots providing an air flow having a resultant force acting intermediate the resultant forces from said vane and said apertures, and means for varying the position of the deck member with Respect to adjacent deck members to selectively activate said vane.
Claim 2
Dependent Claim
120 words
In an air conveyor including a plenum chamber operatively connected to a supply of compressed air, said chamber including a conveying deck, a modular deck member for serial mounting with similar deck members to provide said deck comprising a vane providing an air flow having a resultant force acting substantially horizontal to said deck, a number of laterally spaced apertures providing an air flow having a resultant force acting substantially perpendicular to said deck, a number of laterally spaced slots providing an air flow having a resultant force acting intermediate the resultant forces from said vane and said apertures, and means for varying the position of the deck member with Respect to adjacent deck members to selectively activate said vane.
Claim 3
Dependent Claim
52 words
The invention of claim 1 including plenum chamber sides for supporting the deck and wherein the means for varying the position of the deck member comprises adjustment slots in the sides of the plenum and integral lateral mounting extensions on the deck member adapted to be slidably received in said adjustment slots.
Claim 4
Dependent Claim
128 words
In an air conveyor having an air supply plenum and a conveying deck, a modular member for serial mounting with similar members to provide said conveying deck comprising a vane adapted to provide a first air flow having a resultant force acting substantially parallel to the conveyor deck, aperture means disposed rearwardly of said vane and adapted to provide a second air flow having a resultant force acting substantially perpendicular to the deck, slot means intermediate said vane and said aperture means and adapted to provide a third air flow having a resultant force acting intermediate the resultants of said first and second air flows, and means integral with said member for varying the position thereof with respect to adjacent members to selectively effect said first air flow.
Claim 5
Dependent Claim
128 words
In an air conveyor having an air supply plenum and a conveying deck, a modular member for serial mounting with similar members to provide said conveying deck comprising a vane adapted to provide a first air flow having a resultant force acting substantially parallel to the conveyor deck, aperture means disposed rearwardly of said vane and adapted to provide a second air flow having a resultant force acting substantially perpendicular to the deck, slot means intermediate said vane and said aperture means and adapted to provide a third air flow having a resultant force acting intermediate the resultants of said first and second air flows, and means integral with said member for varying the position thereof with respect to adjacent members to selectively effect said first air flow.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-19 | 1977-05-21 | 1977-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-19 | 1981-05-21 | 1981-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-19 | 1985-05-21 | 1985-11-20 | $7700.00 | Window Closed / Lapsed |