Patent US3920805A successfully refreshed from Google Patents.
US3865097A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latch for microwave oven
Assignee: MICRO-QUARTZ TECHNOLOGY Corp 1010 LYNDALE AVE NORTH MINNEAPOLIS MN 55141 A CORP OF
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Filing: 1974-05-23
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Granted: 1975-02-11
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Expires: 1994-05-23
Abstract
Abstract A door latch assembly for a microwave oven having a latch plate mounted on the microwave oven door, said oven also including means on the front face of the oven for receiving the latch. A switch holder or plate assembly and an actuable slide bar are disposed behind the face wall of the oven. The switch holder assembly is basically stationary whereas the slide bar is actuable by means of an actuating bar or button accessible on the front side of the face wall of the oven. For engagement with each latch, there is provided a latch receiving element which is pivotally supported intermediate the switch holder assembly and the actuating slide bar so that when the oven door is closed and the slide bar is actuated against its normally upwardly biased position the latch receiving element pivotally disengages from the latch and the door is permitted to open. A separate opening bias means may be provided.
Inventors
- 👤 Donald B Robinson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:59
CPC Classifications
H; H05; H05B; H05B6/00; H05B6/64; H05B6/6414; H05B6/6417; F; F24; F24C; F24C15/00; F24C15/02; F24C15/022; Y; Y10; Y10S; Y10S292/00; Y10S292/69; Y10T; Y10T292/00; Y10T292/08; Y10T292/0801; Y10T292/0848; Y10T292/0849; Y10T292/0853
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
181 words
A latch assembly for securing a microwave oven door to the face of the microwave oven comprising: means fastened to the cantilevered end of the oven door for securing the door to the oven face and including at least one latch, said face having at least one aperture to receive the latch, a latch receiving means including means defining an edge for engagement with the latch when the door is closed, means for pivotally supporting said latch receiving means with said edge disposed intermediate the oven face and the pivot point, a sliding element arranged to move in a generally vertical direction, means freely securing said latch receiving means to said sliding element so that as said sliding element moves said latch receiving means is free to pivot about the pivot point, means for biasing the sliding element to a position wherein the latch and latch receiving edge are in engagement when the door is closed and means accessible from the front of the oven for actuating the sliding element to cause the latch to disengage from the latch receiving edge.
Claim 2
Dependent Claim
181 words
A latch assembly for securing a microwave oven door to the face of the microwave oven comprising: means fastened to the cantilevered end of the oven door for securing the door to the oven face and including at least one latch, said face having at least one aperture to receive the latch, a latch receiving means including means defining an edge for engagement with the latch when the door is closed, means for pivotally supporting said latch receiving means with said edge disposed intermediate the oven face and the pivot point, a sliding element arranged to move in a generally vertical direction, means freely securing said latch receiving means to said sliding element so that as said sliding element moves said latch receiving means is free to pivot about the pivot point, means for biasing the sliding element to a position wherein the latch and latch receiving edge are in engagement when the door is closed and means accessible from the front of the oven for actuating the sliding element to cause the latch to disengage from the latch receiving edge.
Claim 3
Dependent Claim
34 words
The latch assembly of claim 1 wherein said means defining an edge includes a rearwardly turned lip having a bearing surface over which the latch is permitted to slide and terminating in the edge.
Claim 4
Dependent Claim
32 words
The latch assembly of claim 1 wherein said means for pivotally supporting said latch receiving means includes a stationary plate and a pivot member secured between the plate and latch receiving means.
Claim 5
Dependent Claim
28 words
The latch assembly of claim 3 wherein said plate has a longitudinal slot for accommodating the pivot member and permitting adjustment of the edge relative to the latch.
Claim 6
Dependent Claim
23 words
The latch assembly of claim 4 wherein the pivot member includes a bolt and nut having a tab member to prevent rotation thereof.
Claim 7
Dependent Claim
18 words
The latch assembly of claim 1 including an electrical switch having an actuating means disposed adjacent said edge.
Claim 8
Dependent Claim
16 words
The latch assembly of claim 6 wherein the actuating means is disposed just below said edge.
Claim 9
Dependent Claim
19 words
The latch assembly of claim 1 wherein said means for securing the door includes a pair of spaced latches.
Claim 10
Dependent Claim
18 words
The latch assembly of claim 8 including means for forcing the door open when the door is disengaged.
Claim 11
Dependent Claim
38 words
The latch assembly of claim 1 wherein said means for actuating the sliding element includes a pivot mechanism having a shaft, and said means for biasing includes a spring disposed about the shaft and contacting the sliding element.
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) | 1978-02-10 | 1978-08-12 | 1979-02-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-10 | 1982-08-12 | 1983-02-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-10 | 1986-08-12 | 1987-02-11 | $7700.00 | Window Closed / Lapsed |