US3970192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nozzle apparatus for a conveyor belt system
Assignee: Individual
•
Filing: 1974-09-16
•
Granted: 1976-07-20
•
Expires: 1994-09-16
Abstract
Abstract A conveyor belt fluid nozzle system includes apparatus for directing pressurized fluid such as air across the width of the conveyor belt to remove debris from the belt surface or from objects on the belt. The source of pressurized fluid such as an air compressor is attached to a plenum member. At least one elongated nozzle extends along the length of the plenum member substantially across the width of the conveyor belt. Auxiliary nozzles may be positioned on each side of the belt. The orifice of the nozzle member has a pair of resiliently biased blades that are adjustable to control the flow of the pressurized fluid.
Inventors
- 👤 Carl von Wolffradt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 09:28
CPC Classifications
B; B65; B65G; B65G45/00; B65G45/10; B65G45/22
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
145 words
In a conveyor belt system having a continuous movable web member and means for moving the web member, the improvement including apparatus for removing material such as debris from the belt comprising: a source of pressurized fluid; a plenum member connected to the source of pressurized fluid having an elongated opening; at least one first nozzle member, including a pair of relatively movable elongated blades capable of forming between the blades an elongated slot orifice extending adjacent and substantially across the width of the web member; means on either side of the plenum member elongated opening for pivotally attaching a respective elongated blade, and means for adjusting a flow area of the slot orifice by a pivoted displacement of at least one elongated blade whereby the impact of the pressurized fluid directed by the nozzle member against the web member removes material from the belt.
Claim 2
Dependent Claim
145 words
In a conveyor belt system having a continuous movable web member and means for moving the web member, the improvement including apparatus for removing material such as debris from the belt comprising: a source of pressurized fluid; a plenum member connected to the source of pressurized fluid having an elongated opening; at least one first nozzle member, including a pair of relatively movable elongated blades capable of forming between the blades an elongated slot orifice extending adjacent and substantially across the width of the web member; means on either side of the plenum member elongated opening for pivotally attaching a respective elongated blade, and means for adjusting a flow area of the slot orifice by a pivoted displacement of at least one elongated blade whereby the impact of the pressurized fluid directed by the nozzle member against the web member removes material from the belt.
Claim 3
Dependent Claim
59 words
The invention of claim 1 wherein the means for moving the web member includes at least one pulley member and the nozzle member is positioned within a 30° arc extending counter to the movement of the web member from the point that the web member leaves the pulley in the direction of the web contacting surface of the pulley.
Claim 4
Dependent Claim
41 words
The invention of claim 1 wherein the means for pivotally attaching the nozzle blades includes a pair of cross sectional C shaped conduits and each of the nozzle blades have a bulbous base portion movably engaged within the C shaped conduits.
Claim 5
Dependent Claim
35 words
The invention of claim 1 further including second and third side nozzle members directing pressurized fluid across the surface of the belt and connected to the first nozzle member to form a U shaped configuration.
Claim 6
Dependent Claim
26 words
The invention of claim 3 wherein the means for adjusting the flow area of the orifice includes at least one spring positioned between the nozzle blades.
Claim 7
Dependent Claim
26 words
The invention of claim 5 wherein the means for adjusting further includes at least one threaded shaft and a threaded retainer member movable on the shaft.
Claim 8
Dependent Claim
19 words
The invention of claim 6 wherein a flexible hose member connects the source of pressurized fluid to the plenum.
Claim 9
Dependent Claim
19 words
The invention of claim 6 wherein each nozzle blade includes a cross sectionally square rib that seats the spring.
Claim 10
Dependent Claim
27 words
The invention of claim 1 further including at least one flange plate positioned at one end of the housing member to prevent the removal of the blades.
Claim 11
Dependent Claim
112 words
In a conveyor belt system for removing material having a continuous movable web member, means for moving the web member, and a source of pressurized fluid, the improvement including a nozzle member comprising: a housing member adapted to being connected to the source of pressurized fluid, having an elongated opening on at least one side thereof and a pair of cross sectional C shaped conduits adjacent the opening; a pair of elongated blades, each of the blades having a bulbous base portion movably engaging a respective C shaped conduit for varying the flow area; and means for adjusting the relative position of the blades to control the flow area between said blades.
Claim 12
Dependent Claim
112 words
In a conveyor belt system for removing material having a continuous movable web member, means for moving the web member, and a source of pressurized fluid, the improvement including a nozzle member comprising: a housing member adapted to being connected to the source of pressurized fluid, having an elongated opening on at least one side thereof and a pair of cross sectional C shaped conduits adjacent the opening; a pair of elongated blades, each of the blades having a bulbous base portion movably engaging a respective C shaped conduit for varying the flow area; and means for adjusting the relative position of the blades to control the flow area between said blades.
Claim 13
Dependent Claim
48 words
The invention of claim 10 wherein the means for adjusting the blades include a projecting seat member on each blade, a spring and shaft, the shaft being capable of relatively moving the blades while the spring contacts the seat members and bias the blades away from each other.
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) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |