Patent US326580A successfully refreshed from Google Patents.
Patent US3859979A successfully refreshed from Google Patents.
US3859979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oven door lock
Assignee: White Consolidated Industries Inc
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Filing: 1974-02-01
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Granted: 1975-01-14
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Expires: 1994-02-01
Abstract
Abstract A locking mechanism for a self-cleaning oven includes an elongated latching rod having a latch lock portion for firm engagement with a slot in the oven door, and a spring bias coupling between the latching rod and drive motor therefor maintains the door under pressure when locked to deform the door seal preventing heat leaks during self-cleaning. The latching rod is supported within the oven frame in a channel, and a rivet connected to the former is positioned for movement within a cam slot in the latter to provide for pivoting of the latching rod during movement to and from engagement with the door. When the oven selector switch is in self-clean position, the door is closed and the timer is set, the control circuit for the selfcleaning oven automatically energizes the drive motor to lock the door; and at the expiration of the cleaning time set on the timer and the dropping of the oven temperature to a predetermined safe level, the control circuit again automatically energizes the drive motor to unlock the door.
Inventors
- 👤 John W Gilliom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 03:24
CPC Classifications
F; F24; F24C; F24C14/00; F24C14/02; F24C15/00; F24C15/02; F24C15/022; Y; Y10; Y10S; Y10S292/00; Y10S292/69
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
77 words
An oven door lock, comprising latch means operable for locking the door in closed position; means for supporting said latch means to permit movement to and from locking engagement with the oven door; drive means for moving said latch means to and from such locking engagement; means for resiliently coupling said latch means to said drive means; and means for energizing said drive means to move said latch means to lock and to unlock the oven door.
Claim 2
Dependent Claim
77 words
An oven door lock, comprising latch means operable for locking the door in closed position; means for supporting said latch means to permit movement to and from locking engagement with the oven door; drive means for moving said latch means to and from such locking engagement; means for resiliently coupling said latch means to said drive means; and means for energizing said drive means to move said latch means to lock and to unlock the oven door.
Claim 3
Dependent Claim
48 words
An oven door lock as set forth in claim 1, wherein said latch means comprises an elongated rod having one end resiliently coupled to said drive means and another end defining a latch lock portion having a cut-out therein for engagement with a slot formed in the door.
Claim 4
Dependent Claim
49 words
An oven door lock as set forth in claim 2, wherein said elongated rod has a longitudinal axis defined between said one and another ends thereof, and the transverse end surface of said rod at said latch lock portion being at an obtuse angle relative to such longitudinal axis.
Claim 5
Dependent Claim
49 words
An oven door lock as set forth in claim 2, wherein said elongated rod has a longitudinal axis defined between said one and another ends thereof, and the transverse end surface of said cut-out remote from said one end being at an obtuse angle relative to such longitudinal axis.
Claim 6
Dependent Claim
60 words
An oven door lock as set forth in claim 1, wherein said latch means comprises an elongated rod resiliently coupled at one end to said drive means and adapted at the other end for engagement with the oven door, and said means for suporting comprises a channel mounted relative to the oven and in which said elongated rod is movable.
Claim 7
Dependent Claim
45 words
An oven door lock as set forth in claim 5, wherein said channel includes a cam slot, and foLlower means on said elongated rod protruding into said cam slot, whereby movement of said elongated rod by said drive means is limited by said cam slot.
Claim 8
Dependent Claim
49 words
An oven door lock as set forth in claim 6, wherein said drive means comprises a motor having a rotatable drive shaft, a member mounted eccentrically relative to said drive shaft for rotation thereby, and said means for resiliently coupling effecting connection between said elongated rod and said member.
Claim 9
Dependent Claim
112 words
An oven door lock as set forth in claim 7, wherein said means for resiliently coupling comprises an angle member having first and second relatively perpendicular surfaces, said first surface being ridigly coupled to said eccentrically mounted member and said second surface having an opening through which a mounting arm portion of said elongated rod extends, and a spring coupled to said mounting arm portion and abutting said second perpendicular surface, whereby said spring precludes withdrawal of said mounting arm portion from said opening and normally provides a force to maintain the door under closing force when locked applying pressure to the oven door seal to prevent heat loss from the oven.
Claim 10
Dependent Claim
49 words
An oven door lock as set forth in claim 1, wherein said drive means comprises a motor having a rotatable drive shaft, a member mounted eccentrically relative to said drive shaft for rotation thereby, and said means for resiliently coupling effecting connection between said elongated rod and said member.
Claim 11
Dependent Claim
112 words
An oven door lock as set forth in claim 9, wherein said means for resiliently coupling comprises an angle member having first and second relatively perpendicular surfaces, said first surface being rigidly coupled to said eccentrically mounted member and said second surface having an opening through which a mounting arm portion of said elongated rod extends, and a spring coupled to said mounting arm portion and abutting said second perpendicular surface, whereby said spring precludes withdrawal of said mounting arm portion from said opening and nornmally provides a force to maintain the door under closing force when locked applying pressure to the oven door seal to prevent heat loss from the oven.
Claim 12
Dependent Claim
67 words
An oven door lock as set forth in claim 10, further comprising a cam member attached to said motor drive shaft and rotatably thereby, said eccentrically mounted member being mounted on said cam member, and control switch means electrically copuled in said means for energizing for controlling the same, said control switch means being positioned to be thrown by said cam member as the latter is rotated.
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) | 1978-01-13 | 1978-07-15 | 1979-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-13 | 1982-07-15 | 1983-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-13 | 1986-07-15 | 1987-01-14 | $7700.00 | Window Closed / Lapsed |