US3603269A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven loading means
Assignee: Teledyne Inc
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Filing: 1970-02-16
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Granted: 1971-09-07
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Expires: 1990-02-16
Abstract
Abstract An apparatus for transversely conveying at timed intervals successive rows of pans of dough to a position in front of the loading opening of a commercial type oven and for pushing such successive rows of pans into the oven onto successive trays of a continuously operating endless oven tray conveyor. The pans to be conveyed are made of a magnetic material and the pan conveyor conveying surface is made of a nonmagnetic material. Beneath the pan conveyor conveying surface are a series of electromagnetic coils arranged to be energized at such times only when the conveying surface is operating to exert a pulling force on the pans substantially increasing the pressure of the pans against the conveying surface and minimizing movement of the pans relative to the conveying surface during starting, stopping and running time of the pan conveyor. The pan conveyor is arranged to be intermittently operated through a predetermined measured linear travel to present successive rows of pans to the oven loading opening in position to be pushed therethrough onto successive oven trays. At such times that the pan conveyor is not operating, the electromagnetic coils are arranged to be deenergized, allowing a continuously operating pusher timed with the oven tray conveyor, to traverse the pan conveyor conveying surface and push successive rows of pans therefrom onto successive trays of the oven tray conveyor.
Inventors
- 👤 Wayne H Royer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:03
CPC Classifications
A; A21; A21B; A21B3/00; A21B3/07; A21B1/00; A21B1/42; A21B1/48
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
213 words
In a baking oven provided with a loading opening: a transversely extending endless pan conveyor formed of a nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening: a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means for arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to said loading opening and prior to the next traverse of said endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
Claim 2
Dependent Claim
213 words
In a baking oven provided with a loading opening: a transversely extending endless pan conveyor formed of a nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening: a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means for arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to said loading opening and prior to the next traverse of said endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
Claim 3
Dependent Claim
35 words
Apparatus in accordance with claim 1 wherein said last named control means includes time delay means for delaying deenergization of said electromagnets for a short time after cessation of operation of said endless pan conveyor.
Claim 4
Dependent Claim
286 words
In a baking oven provided with a loading opening: an endless tray conveyor in said oven having equidistantly spaced apart trays including a generally vertical run adjacent said loading opening: a transversely extending endless pan conveyor formed of a nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening: a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; means for operating said pusher in timed relation with said oven tray conveyor through a pan pushing and return stroke cycle for each travel of said tray conveyor through one tray space for pushing successive rows of pans on successive pushing strokes of said pusher onto successive trays of said tray conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means for arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to said loading opening and prior to the next traverse of said endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
Claim 5
Dependent Claim
286 words
In a baking oven provided with a loading opening: an endless tray conveyor in said oven having equidistantly spaced apart trays including a generally vertical run adjacent said loading opening: a transversely extending endless pan conveyor formed of a nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening: a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; means for operating said pusher in timed relation with said oven tray conveyor through a pan pushing and return stroke cycle for each travel of said tray conveyor through one tray space for pushing successive rows of pans on successive pushing strokes of said pusher onto successive trays of said tray conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means for arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to said loading opening and prior to the next traverse of said endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
Claim 6
Dependent Claim
17 words
Apparatus in accordance with claim 3, including means for continuously operating said tray conveyor and said pusher.
Claim 7
Dependent Claim
303 words
In a baking oven provided with a loading opening: an endless tray conveyor in said oven having equidistantly spaced apart trays including a generally vertical run adjacent said loading opening: a transversely extending Endless pan conveyor formed of nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening; a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; means for operating said pusher in timed relation with said oven tray conveyor through a pan pushing and return stroke cycle for each travel of said tray conveyor through one tray space for pushing successive rows of pans on successive pushing strokes of said pusher onto successive trays of said tray conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means responsive to initiation of operation of said endless pan conveyor for maintaining operation of said endless pan conveyor and arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to the loading opening and prior to the next traverse of the endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
Claim 8
Dependent Claim
303 words
In a baking oven provided with a loading opening: an endless tray conveyor in said oven having equidistantly spaced apart trays including a generally vertical run adjacent said loading opening: a transversely extending Endless pan conveyor formed of nonmagnetic material for advancing successive groups of pans from one side of said oven to a position in front of said loading opening; a pusher movable on a pan pushing stroke traversing said endless pan conveyor and on a return stroke at an elevation above said endless pan conveyor; means for operating said pusher in timed relation with said oven tray conveyor through a pan pushing and return stroke cycle for each travel of said tray conveyor through one tray space for pushing successive rows of pans on successive pushing strokes of said pusher onto successive trays of said tray conveyor; control means initiating operation of said endless pan conveyor after each traverse of said pusher across said endless pan conveyor; control means responsive to initiation of operation of said endless pan conveyor for maintaining operation of said endless pan conveyor and arresting operation of said endless pan conveyor upon travel thereof through a linear distance to present a row of pans to the loading opening and prior to the next traverse of the endless pan conveyor by said pusher; a plurality of longitudinally spaced transversely extending electromagnets disposed beneath said endless pan conveyor providing when energized a magnetic field between the poles thereof in the path of said pans; and control means for energizing said electromagnets upon initiation of operation of said endless pan conveyor and for deenergizing said electromagnets when said endless pan conveyor has completed its travel through said linear distance, whereby to substantially increase the pressure of said pans against said endless pan conveyor during starting, stopping and running time thereof.
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) | 1974-09-06 | 1975-03-08 | 1975-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-06 | 1979-03-08 | 1979-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-06 | 1983-03-08 | 1983-09-07 | $7700.00 | Window Closed / Lapsed |