Patent US4693999A successfully refreshed from Google Patents.
US3144146A
Expired / Lapsed
US
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Mimic positioning controller
Assignee: Westinghouse Electric Corp
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Filing: 1960-11-17
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Granted: 1964-08-11
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Expires: 1980-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Strickland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:23
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/42; E02F3/427; E02F3/30; E02F3/308; E02F9/00; E02F9/20; E02F9/2004; E02F9/2008; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19535
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A CONTROLLER FOR A SHOVEL INCLUDING A DIPPER AND A DIPPER HANDLE COMPRISING, MEANS FOR SENSING THE DIPPER HANDLE HOIST ANGLE; MEANS FOR SENSING THE DIPPER HANDLE EXTENSION; MOVABLE MEANS OPERABLY CONNECTED TO SAID FIRST AND SECOND MEANS FOR MIMICKING THE MOVEMENTS OF SAID DIPPER; A CONTROLLING MEMBER ADAPTED TO BE MOVED RELATIVE TO SAID MOVABLE MEANS AND PROVIDE A SIGNAL FOR CHANGING THE POSITION OF SAID DIPPER AS A FUNCTION OF THE POSITION OF SAID CONTROLLING MEMBER WITH RESPECT TO SAID MOVABLE MEANS; AND POWER MEANS RESPONSIVE TO SAID SIGNAL FOR CHANGING THE HOIST ANGLE AND EXTENSION OF SAID DIPPER HANDLE.
Claim 2
Dependent Claim
102 words
A CONTROLLER FOR A SHOVEL INCLUDING A DIPPER AND A DIPPER HANDLE COMPRISING, MEANS FOR SENSING THE DIPPER HANDLE HOIST ANGLE; MEANS FOR SENSING THE DIPPER HANDLE EXTENSION; MOVABLE MEANS OPERABLY CONNECTED TO SAID FIRST AND SECOND MEANS FOR MIMICKING THE MOVEMENTS OF SAID DIPPER; A CONTROLLING MEMBER ADAPTED TO BE MOVED RELATIVE TO SAID MOVABLE MEANS AND PROVIDE A SIGNAL FOR CHANGING THE POSITION OF SAID DIPPER AS A FUNCTION OF THE POSITION OF SAID CONTROLLING MEMBER WITH RESPECT TO SAID MOVABLE MEANS; AND POWER MEANS RESPONSIVE TO SAID SIGNAL FOR CHANGING THE HOIST ANGLE AND EXTENSION OF SAID DIPPER HANDLE.
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) | 1967-08-11 | 1968-02-10 | 1968-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-11 | 1972-02-10 | 1972-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-11 | 1976-02-10 | 1976-08-11 | $7700.00 | Window Closed / Lapsed |