US3287946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Automatic gauge control with manual adjustment
Assignee: Allis Chalmers Corp
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Filing: 1963-12-30
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Granted: 1966-11-29
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Expires: 1983-12-30
Abstract
No abstract record available.
Inventors
- 👤 Ralph E Perrault
- 👤 Allan C Halter
- 👤 Paul L Mcmath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:19
CPC Classifications
B; B21; B21B; B21B37/00; B21B37/58; B21B37/64
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
IN A CONTROL FOR A SYSTEM HAVING MEANS COMPARING A SYSTEM FIRST PARAMETER WITH A REFERENCE AND ORDERING CHANGES IN A SYSTEM SECOND PARAMETER ACCORDING TO A RELATIONSHIP BETWEEN CHANGES IN SAID FIRST AND SECOND PARAMETERS TO MAINTAIN A PREDETERMINED SYSTEM CONDITION, MANUALLY CONTROLLED MEANS FOR CHANGING SAID SYSTEM SECOND PARAMETER INDEPENDENTLY OF THE CONTROL ACTION OF SAID COMPARING MEANS TO ACHIEVE A SECOND SYSTEM CONDITION, AND MEANS RESPONSIVE TO THE CHANGE IN SAID SYSTEM SECOND PARAMETER BY SAID MANUALLY CONTROLLED MEANS AND INCLUDING A REGISTER FOR SAID SYSTEM SECOND PARA-
Claim 2
Dependent Claim
91 words
IN A CONTROL FOR A SYSTEM HAVING MEANS COMPARING A SYSTEM FIRST PARAMETER WITH A REFERENCE AND ORDERING CHANGES IN A SYSTEM SECOND PARAMETER ACCORDING TO A RELATIONSHIP BETWEEN CHANGES IN SAID FIRST AND SECOND PARAMETERS TO MAINTAIN A PREDETERMINED SYSTEM CONDITION, MANUALLY CONTROLLED MEANS FOR CHANGING SAID SYSTEM SECOND PARAMETER INDEPENDENTLY OF THE CONTROL ACTION OF SAID COMPARING MEANS TO ACHIEVE A SECOND SYSTEM CONDITION, AND MEANS RESPONSIVE TO THE CHANGE IN SAID SYSTEM SECOND PARAMETER BY SAID MANUALLY CONTROLLED MEANS AND INCLUDING A REGISTER FOR SAID SYSTEM SECOND PARA-
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) | 1969-11-28 | 1970-05-30 | 1970-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-28 | 1974-05-30 | 1974-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-28 | 1978-05-30 | 1978-11-29 | $7700.00 | Window Closed / Lapsed |