Patent US4503758A successfully refreshed from Google Patents.
US4503758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Toaster
Assignee: Alco Foodservice Equipment Co
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Filing: 1982-07-22
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Granted: 1985-03-12
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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
- 👤 James G. Carville
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:22
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; A47J37/08; A47J37/0814; A47J37/0842; G; G05; G05D; G05D23/00; G05D23/19; G05D23/1951
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
245 words
A toaster comprising a toasting compartment having upper and lower ends and an elongated cross-section transverse to the direction between the upper and lower ends, an opening for the insertion of a slice of bread, the slice of bread having parallel faces extending from one edge of the slice to an opposite edge thereof, guide means for engaging the faces of the bread slice and thereby maintaining the slice of bread in a position such that said one edge of the slice of bread is at a higher level than the opposite edge while in the toasting compartment, and a discharge opening at the lower end of the compartment, releasable bread support means within the toasting compartment for engaging said opposite edge of the slice of bread within the toasting compartment and temporarily maintaining the slice of bread in the toasting compartment with said opposite edge spaced above the discharge opening, means for establishing a toasting cycle and means responsive to the toasting cycle-establishing means for releasing the bread support means at the end of the toasting cycle, thereby causing the slice of bread to drop through the discharge opening, and means for effecting a movement of the bread support means immediately before the release thereof so that it pushes against said opposite edge of the bread slice in a direction substantially parallel to the faces of the bread slice, whereby if the bread slice is adhered to the guide means it is forcibly dislodged.
Claim 2
Dependent Claim
245 words
A toaster comprising a toasting compartment having upper and lower ends and an elongated cross-section transverse to the direction between the upper and lower ends, an opening for the insertion of a slice of bread, the slice of bread having parallel faces extending from one edge of the slice to an opposite edge thereof, guide means for engaging the faces of the bread slice and thereby maintaining the slice of bread in a position such that said one edge of the slice of bread is at a higher level than the opposite edge while in the toasting compartment, and a discharge opening at the lower end of the compartment, releasable bread support means within the toasting compartment for engaging said opposite edge of the slice of bread within the toasting compartment and temporarily maintaining the slice of bread in the toasting compartment with said opposite edge spaced above the discharge opening, means for establishing a toasting cycle and means responsive to the toasting cycle-establishing means for releasing the bread support means at the end of the toasting cycle, thereby causing the slice of bread to drop through the discharge opening, and means for effecting a movement of the bread support means immediately before the release thereof so that it pushes against said opposite edge of the bread slice in a direction substantially parallel to the faces of the bread slice, whereby if the bread slice is adhered to the guide means it is forcibly dislodged.
Claim 3
Dependent Claim
178 words
A toaster according to claim 1 in which the bread support means comprises means providing a platform which normally extends substantially perpendicular to the faces of the bread slice, which is pivoted on an axis extending lengthwise of the toasting compartment along one of the sides thereof, and has an arm secured to the platform-providing means and pivoting therewith, and in which the means for releasing the bread support means comprises latch means engageable with the arm secured to the platform-providing means and normally preventing the platform from pivoting downwardly from its normal position, the latch means being movable in response to the toasting cycle-establishing means to a release positon allowing the platform-providing means to rotate in one direction about its pivot axis and release a slice of toast through the discharge opening, the means for effecting a movement of the bread support means immediately before the release thereof comprising camming means for effecting a pivoting movement of the platform-providing means in a direction opposite to said one direction as the latch means moves toward the release position.
Claim 4
Dependent Claim
187 words
A toaster according to claim 1 in which the bread support means comprises means providing a platform which normally extends substantially perpendicular to the faces of the bread slice, which is pivoted on an axis extending lengthwise of the toasting compartment along one of the sides thereof, and has an arm secured to the platform-providing means and pivoting therewith, and in which the means for releasing the bread support means comprises latch means engageable with the arm secured to the platform-providing means and normally preventing the platform from pivoting downwardly from its normal position, the latch means being movable in response to the toasting cycle-establishing means to a release position allowing the platform-providing means to rotate in one direction about its pivot axis and release a slice of toast through the discharge opening, the means for effecting a movement of the bread support means immediately before the release thereof comprising a camming surface on the arm cooperable with the latch means to effect a pivoting movement of the platform-providing means in a direction opposite to said one dirction as the latch means moves toward the release position.
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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) | 1988-03-11 | 1988-09-10 | 1989-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-03-11 | 1992-09-10 | 1993-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-03-11 | 1996-09-10 | 1997-03-12 | $7700.00 | Window Closed / Lapsed |