Patent US3804583A successfully refreshed from Google Patents.
US3804583A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Baking oven
Assignee: Individual
•
Filing: 1973-02-20
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Granted: 1974-04-16
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Expires: 1993-02-20
Abstract
Abstract A proofer and baking oven including an enclosure, a conveyor carrying the goods to be baked through the oven and arranged to transport a plurality of baking trays in a series of vertically upwardly and downwardly directed passes through the oven. Heated air intake and discharge nozzles are positioned to direct heated air horizontally through the baking chamber across the vertical passes of the conveyor. Baking trays of generally square crosssectional configuration and having baking cups on opposed sides are carried through the baking oven by the conveyor. Guide means are provided within the oven interior to hold the baking trays in upright position throughout the paths of vertical travel and horizontal travel and when the conveyor turns about its associated sprockets at the termination of each pass. Each baking tray is provided with endwardly positioned weights which are vertically able and act to retain the desired upright orientation of the baking trays during travel through the oven and further act to jolt the trays for product release following the baking operations when the trays are rotated through 180*.
Inventors
- 👤 R Parkes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
A; A21; A21B; A21B1/00; A21B1/42; A21B1/46; A21C; A21C13/00; A21C13/02
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
222 words
In a baking oven, for baking food products, the combination of a. an enclosure i. said enclosure being subdivided into a baking area having two sides, a return air plenum and an input air plenum, ii. said return air plenum and input air plenum being provided with air flow control means and being arranged with respect to the baking area to permit heated air from the input air plenum to travel through the baking area to enter the return air plenum; b. a conveyor carrying the food products to be baked through the baking area, i. said conveyor turning about upper and lower sprockets to divide its path of travel through the baking area into a plurality of upwardly and downwardly directed passes; c. a plurality of baking trays affixed to the conveyor in spaced relationship, i. said baking trays being provided with pivotal means to permit the baking trays to rotate relative to the conveyor, ii. said baking trays each having a top, a bottom, a first side, a second side, a right end and a left end; and d. orientation means associated with each baking tray to maintain an initial upper orientation of each baking tray during the path of travel through the baking area, i. said orientation means including components capable of movement relative to the associated baking tray.
Claim 2
Dependent Claim
222 words
In a baking oven, for baking food products, the combination of a. an enclosure i. said enclosure being subdivided into a baking area having two sides, a return air plenum and an input air plenum, ii. said return air plenum and input air plenum being provided with air flow control means and being arranged with respect to the baking area to permit heated air from the input air plenum to travel through the baking area to enter the return air plenum; b. a conveyor carrying the food products to be baked through the baking area, i. said conveyor turning about upper and lower sprockets to divide its path of travel through the baking area into a plurality of upwardly and downwardly directed passes; c. a plurality of baking trays affixed to the conveyor in spaced relationship, i. said baking trays being provided with pivotal means to permit the baking trays to rotate relative to the conveyor, ii. said baking trays each having a top, a bottom, a first side, a second side, a right end and a left end; and d. orientation means associated with each baking tray to maintain an initial upper orientation of each baking tray during the path of travel through the baking area, i. said orientation means including components capable of movement relative to the associated baking tray.
Claim 3
Dependent Claim
40 words
The invention of claim 1 wherein the orientation means comprise a weight guide compartment and a weight slidable within the weight guide compartment, said weight being less in height then the distance between the said tray top and tray bottom.
Claim 4
Dependent Claim
37 words
The invention of claim 2 wherein the first and second sides are provided with respective first and second air passage openings, the said openings having a diameter which is large relative to the height of the sides.
Claim 5
Dependent Claim
24 words
The invention of claim 3 wherein the first and second air passage openings are horizontally aligned to facilitate the passage of heated air therethrough.
Claim 6
Dependent Claim
56 words
The invention of claim 4 and a first baking pan of first configuration provided in the said top and a second baking pan of a second configuration provided in the said bottom, the said baking trays being rotatable relative to the conveyor to orient either said first or second baking pan upwardly within the baking area.
Claim 7
Dependent Claim
21 words
The invention of claim 5 and tray alignment means provided in the baking oven to maintain the said initial upper orientation.
Claim 8
Dependent Claim
42 words
The invention of claim 6 wherein the tray alignment means comprise vertical brackets affixed to the baking oven, said brackets aligning near the baking tray sides to prevent rotation of a baking tray within its pivotal connection within the baking oven enclosure.
Claim 9
Dependent Claim
35 words
The invention of claim 1 wherein the air flow control means include a first plurality of nozzles formed in the input air plenum and a second plurality of nozzles formed in the return air plenum.
Claim 10
Dependent Claim
34 words
The invention of claim 8 wherein the first plurality of nozzles position on one side of the baking area and the second plurality of nozzles position on the second side of the baking area.
Claim 11
Dependent Claim
13 words
The invention of claim 9 wherein the first and second nozzles horizontally align.
Claim 12
Dependent Claim
24 words
The invention of claim 10 wherein the first and second nozzles direct the heated air through the baking area in horizontal, uniform temperature stratas.
Claim 13
Dependent Claim
32 words
The invention of claim 5 and baking tray rotation means associated with each baking tray to rotate the baking tray through one hundred and eighty degrees upon completion of the baking operations.
Claim 14
Dependent Claim
49 words
The invention of claim 12 wherein the rotation means include an arm extending outwardly from one of the baking tray ends and a fixed finger or cam positioned exteriorly of the baking area, the conveyor carrying the arm into contact with the finger for tray rotative or positioning purposes.
Claim 15
Dependent Claim
16 words
The invention of claim 13 wherein the arm is configured in the form of a cross.
References Cited (Backward Citations)
US2106052A
Cited
US3381391A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |