US4454803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toaster
Assignee: Alco Foodservice Equipment Co
•
Filing: 1982-07-22
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Granted: 1984-06-19
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Expires: 2002-07-22
Abstract
Abstract This drop-down toaster has a bread support and a door at the bottom of each toasting compartment. The door has a series of vent holes for air convection which produces improved uniformity in the toast. The door and bread support are held closed by rollers on solenoid-controlled sliding bars. The rollers allow the door to swing open before the bread support is released, and they return the door and bread support to their normal condition automatically by a cam action. The bread support is cammed upwardly before release to dislodge bread from the toasting compartment guide wires. An electronic timing circuit is located in a base underneath and spaced vertically from the toasting section so that it is not affected by heat from the toasting section. The timing circuit is compensated in accordance with previous use rather than by sensing the temperature of the toasting compartment. That is, for any two successive toasting cycles, the second toasting cycle is made longer if the interval between the two cycles is longer and shorter if the interval between the two toasting cycles is shorter. Similarly, the second toasting cycle is dependent on the length of the preceding toasting cycle so that if the preceding toasting cycle is short, the second toasting cycle is long, and vice versa. The relay for switching current in the toaster heating elements is remote from the timer circuit board so that it can be replaced in the event of a short circuit without disturbing the circuit board.
Inventors
- 👤 Fred G. Wolf
- 👤 William C. Schneider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:41
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/08; A47J37/0814; A47J37/0842
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
302 words
A toaster comprising a toasting compartment having an elongated horizontal cross-section and having upper and lower ends, an opening at its upper end for the insertion of a slice of bread, guide means for maintaining the slice of bread substantially vertical while in the toasting compartment, and a discharge opening at the lower end, releasable bread support means within the toasting compartment for engaging the lower edge of the slice of bread within the toasting compartment and temporarily maintaining the slice of bread in the toasting compartment with its lower edge spaced above the discharge opening, an elongated door located at the discharge opening and arranged to close the discharge opening, means for establishing a toasting cycle and means responsive to the toasting cycle-establishing means for opening the door and releasing the bread support means at the end of the toasting cycle, said bread support means comprising means providing a normally horizontal platform pivoted on an axis extending lengthwise of the toasting compartment along one of the sides thereof, and having an arm secured to the platform-providing means and pivoting therewith, the door being pivoted along an axis extending lengthwise of the toasting compartment along one of the sides thereof and having follower means pivoting therewith, and the means for opening the door and for releasing the bread support means comprising first latch means engageable with the arm secured to the platform-providing means and normally preventing the platform from pivoting downwardly from its horizontal position and second latch means engageable with the follower means of the door and normally preventing the door from pivoting downwardly from its closed position, the latch means being movable in response to the toasting cycle-establishing means to positions allowing the door and platform-providing means to pivot downwardly and release a slice of toast through the discharge opening.
Claim 2
Dependent Claim
302 words
A toaster comprising a toasting compartment having an elongated horizontal cross-section and having upper and lower ends, an opening at its upper end for the insertion of a slice of bread, guide means for maintaining the slice of bread substantially vertical while in the toasting compartment, and a discharge opening at the lower end, releasable bread support means within the toasting compartment for engaging the lower edge of the slice of bread within the toasting compartment and temporarily maintaining the slice of bread in the toasting compartment with its lower edge spaced above the discharge opening, an elongated door located at the discharge opening and arranged to close the discharge opening, means for establishing a toasting cycle and means responsive to the toasting cycle-establishing means for opening the door and releasing the bread support means at the end of the toasting cycle, said bread support means comprising means providing a normally horizontal platform pivoted on an axis extending lengthwise of the toasting compartment along one of the sides thereof, and having an arm secured to the platform-providing means and pivoting therewith, the door being pivoted along an axis extending lengthwise of the toasting compartment along one of the sides thereof and having follower means pivoting therewith, and the means for opening the door and for releasing the bread support means comprising first latch means engageable with the arm secured to the platform-providing means and normally preventing the platform from pivoting downwardly from its horizontal position and second latch means engageable with the follower means of the door and normally preventing the door from pivoting downwardly from its closed position, the latch means being movable in response to the toasting cycle-establishing means to positions allowing the door and platform-providing means to pivot downwardly and release a slice of toast through the discharge opening.
Claim 3
Dependent Claim
35 words
A toaster according to claim 1 including vent means for effecting restricted flow of air by convection from outside the toasting compartment upwardly into the toasting compartment from a location below the bread support means.
Claim 4
Dependent Claim
96 words
A toaster according to claim 1 including means for restoring the first and second latch means to the positions in which they prevent the platform and door from pivoting downwardly, and in which the arm and the follower are positioned relative to the respective first and second latch means so that, in the restoring movement of the latch means, the first latch means effects movement of the platform to its horizontal position by engagement with the arm, and the second latch means effects movement of the door to its closed position by engagement with the follower.
Claim 5
Dependent Claim
45 words
A toaster according to claim 1 in which the follower means of the door is contoured so that the second latch means allows the opening movement of the door to begin before the first latch means allows the platform-providing means to begin to pivot downwardly.
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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) | 1987-06-19 | 1987-12-19 | 1988-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-19 | 1991-12-19 | 1992-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-19 | 1995-12-19 | 1996-06-19 | $7700.00 | Window Closed / Lapsed |