Patent US3322982A successfully refreshed from Google Patents.
US3322982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature control oven
Assignee: Motorola Solutions Inc
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Filing: 1963-04-16
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Granted: 1967-05-30
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Expires: 1983-04-16
Abstract
No abstract record available.
Inventors
- 👤 Robert L Craiglow
- 👤 William C Post
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:22
CPC Classifications
G; G05; G05D; G05D23/00; G05D23/19; G05D23/20; G05D23/24; G05D23/1906
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A CRYSTAL OVER INCLUDING IN COMBINATION, AN OUTER HOUSING, SAID OUTER HOUSING HAVING A REMOVABLE CLOSURE PORTION, A FIRST METALLIC CUP INSULATINGLY SUPPORTED IN SAID HOUSING TO FORM A CAVITY THEREIN HAVING AN OPENING FACING SAID CLOSURE PORTION, A SECOND METALLIC CUP INSULATINGLY SUPPORTED BY SAID CLOSURE PORTION AND HAVING EXTENDING WALL PORTIONS ADAPTED TO FIT COAXIALLY WITH SAID FIRST CUP PORTION TO FORM AN ENCLOSED OVEN CHAMBER, SAID SECOND CUP FURTER HAVING SOCKET MEANS TO RECEIVE A PIEZOELECTRIC CRYSTAL, A HEATING COIL SUPPORTED BY AND IN THERMAL CONTACT WITH THE EXTERIOR SURFACE OF SAID FIRST CUP, A TEMPERATURE CONTROL CIRCUIT FOR APPLYING CURRENT TO SAID HEATING COIL, A BRIDGE CIRCUIT IN SAID TEMPERATURE CONTROL CIRCUIT, HEAT SENSING MEANS DISPOSED ON THE EXTERIOR SURFACE OF SAID FIRST CUP, SAID HEAT SENSING MEANS BEING CONNECTED AS ONE ARM OF SAID BRIDGE
Claim 2
Dependent Claim
140 words
A CRYSTAL OVER INCLUDING IN COMBINATION, AN OUTER HOUSING, SAID OUTER HOUSING HAVING A REMOVABLE CLOSURE PORTION, A FIRST METALLIC CUP INSULATINGLY SUPPORTED IN SAID HOUSING TO FORM A CAVITY THEREIN HAVING AN OPENING FACING SAID CLOSURE PORTION, A SECOND METALLIC CUP INSULATINGLY SUPPORTED BY SAID CLOSURE PORTION AND HAVING EXTENDING WALL PORTIONS ADAPTED TO FIT COAXIALLY WITH SAID FIRST CUP PORTION TO FORM AN ENCLOSED OVEN CHAMBER, SAID SECOND CUP FURTER HAVING SOCKET MEANS TO RECEIVE A PIEZOELECTRIC CRYSTAL, A HEATING COIL SUPPORTED BY AND IN THERMAL CONTACT WITH THE EXTERIOR SURFACE OF SAID FIRST CUP, A TEMPERATURE CONTROL CIRCUIT FOR APPLYING CURRENT TO SAID HEATING COIL, A BRIDGE CIRCUIT IN SAID TEMPERATURE CONTROL CIRCUIT, HEAT SENSING MEANS DISPOSED ON THE EXTERIOR SURFACE OF SAID FIRST CUP, SAID HEAT SENSING MEANS BEING CONNECTED AS ONE ARM OF SAID BRIDGE
References Cited (Backward Citations)
US2957111A
Cited
US2967924A
Cited
US2969471A
Cited
US3041548A
Cited
US3107285A
Cited
US3040158A
Cited
US3079516A
Cited
US3161759A
Cited
US3252109A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-29 | 1970-11-28 | 1971-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-29 | 1974-11-28 | 1975-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-29 | 1978-11-28 | 1979-05-30 | $7700.00 | Window Closed / Lapsed |