Patent US2554711A successfully refreshed from Google Patents.
Patent US3197049A successfully refreshed from Google Patents.
US3197049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Universal excavator
Assignee: Friedrich Wilhelm Schwing GmbH
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Filing: 1964-04-30
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Granted: 1965-07-27
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Expires: 1984-04-30
Abstract
No abstract record available.
Inventors
- 👤 Schwing Friedrich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:18
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/3604; E02F3/30; E02F3/301; E02F3/32; E02F3/3677; E02F3/42; E02F9/00; E02F9/20; E02F9/22; E02F9/2264; E02F9/2275
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
364 words
IN AN EXCAVATING APPARATUS, THE COMBINATION WITH AW MOVABLE SUPPORT OF: A FRONT DIPPER STICK; A BUCKET PIVOTALLY CONNECTED AT ITS OPEN END TO SAID DIPPER STICK AT ONE END THEREOF; FIRST HYDRAULIC MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO SAID BUCKET AT A POINT SPACED FROM THE END OF SAID DIPPER STICK; A FIRST CRANK ARM, THE OTHER END OF SAID DIPPER STICK PIVOTALLY CONNECTED TO SAID ARM INTERMEDIATE THE ENDS THEREOF, THE OPPOSITE END OF SAID FIRST HYDRAULIC MEANS PIVOTALLY CONNECTED TO ONE END OF SAID ARM, THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS OF THE ONE END OF SAID FRONT DIPPER STICK AND SAID FIRST HYDRAULIC MEANS TO SAID BUCKET BEING SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS BETWEEN THE OTHER ENDS OF SAID FRONT DIPPER STICK AND SAID FIRST HYDRAULIC MEANS TO SAID FIRST CRANK ARM; A REAR ARM PIVOTALLY CONNECTED ADJACENT ONE END TO THE OTHER END OF SAID FRIST CRANK ARM; LINKAGE MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO SAID FIRST CRANK ARM AT A POINT BETWEEN THE PIVOTAL CONNECTIONS OF SAID FRONT DIPPER STICK AND SAID REAR ARM THERETO; A SECOND CRANK ARM, THE OTHER END OF SAID REAR ARM PIVOTALLY CONNECTED TO THE SECOND CRANK ARM INTERMEDIATE THE ENDS THEREOF, THE OPPOSITE END OF SAID LINKAGE MEANS PIVOTALLY CONNECTED TO ONE END OF SAID SECOND CRANK ARM, THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS OF THE ONE END OF SAID REAR ARM AND SAID LINKAGE MEANS TO SAID FIRST CRANK ARM BEING SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE PIVOTAL CONNECTION BETWEEN THE OTHER ENDS OF SAID REAR ARM AND SAID LINKAGE MEANS TO SAID SECOND CRANK ARM; A HYDRAULIC WORK CYLINDER PIVOTALLY CONNECTED BETWEEN THE ONE END OF SAID SECOND CRANK ARM AND A POINT INTERMEDIATE THE ENDS OF SAID REAR ARM; AN AUXILIARY BOOM HAVING ONE END MOUNTED FOR SELECTED VERTICAL MOVEMENT ON SAID MOVABLE SUPPORT, THE OTHER END OF SAID BOOM PIVOTALLY CONNECTED TO SAID SECOND CRANK ARM AT A POINT INTERMEDIATE THE ENDS THEREOF; AND SECOND HYDRAULIC MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO THE OTHER END OF SAID SECOND CRANK ARM AND THE OTHER END TO A POINT ON SAID BOOM.
Claim 2
Dependent Claim
364 words
IN AN EXCAVATING APPARATUS, THE COMBINATION WITH AW MOVABLE SUPPORT OF: A FRONT DIPPER STICK; A BUCKET PIVOTALLY CONNECTED AT ITS OPEN END TO SAID DIPPER STICK AT ONE END THEREOF; FIRST HYDRAULIC MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO SAID BUCKET AT A POINT SPACED FROM THE END OF SAID DIPPER STICK; A FIRST CRANK ARM, THE OTHER END OF SAID DIPPER STICK PIVOTALLY CONNECTED TO SAID ARM INTERMEDIATE THE ENDS THEREOF, THE OPPOSITE END OF SAID FIRST HYDRAULIC MEANS PIVOTALLY CONNECTED TO ONE END OF SAID ARM, THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS OF THE ONE END OF SAID FRONT DIPPER STICK AND SAID FIRST HYDRAULIC MEANS TO SAID BUCKET BEING SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS BETWEEN THE OTHER ENDS OF SAID FRONT DIPPER STICK AND SAID FIRST HYDRAULIC MEANS TO SAID FIRST CRANK ARM; A REAR ARM PIVOTALLY CONNECTED ADJACENT ONE END TO THE OTHER END OF SAID FRIST CRANK ARM; LINKAGE MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO SAID FIRST CRANK ARM AT A POINT BETWEEN THE PIVOTAL CONNECTIONS OF SAID FRONT DIPPER STICK AND SAID REAR ARM THERETO; A SECOND CRANK ARM, THE OTHER END OF SAID REAR ARM PIVOTALLY CONNECTED TO THE SECOND CRANK ARM INTERMEDIATE THE ENDS THEREOF, THE OPPOSITE END OF SAID LINKAGE MEANS PIVOTALLY CONNECTED TO ONE END OF SAID SECOND CRANK ARM, THE DISTANCE BETWEEN THE PIVOTAL CONNECTIONS OF THE ONE END OF SAID REAR ARM AND SAID LINKAGE MEANS TO SAID FIRST CRANK ARM BEING SUBSTANTIALLY EQUAL TO THE DISTANCE BETWEEN THE PIVOTAL CONNECTION BETWEEN THE OTHER ENDS OF SAID REAR ARM AND SAID LINKAGE MEANS TO SAID SECOND CRANK ARM; A HYDRAULIC WORK CYLINDER PIVOTALLY CONNECTED BETWEEN THE ONE END OF SAID SECOND CRANK ARM AND A POINT INTERMEDIATE THE ENDS OF SAID REAR ARM; AN AUXILIARY BOOM HAVING ONE END MOUNTED FOR SELECTED VERTICAL MOVEMENT ON SAID MOVABLE SUPPORT, THE OTHER END OF SAID BOOM PIVOTALLY CONNECTED TO SAID SECOND CRANK ARM AT A POINT INTERMEDIATE THE ENDS THEREOF; AND SECOND HYDRAULIC MEANS PIVOTALLY CONNECTED ADJACENT ONE END TO THE OTHER END OF SAID SECOND CRANK ARM AND THE OTHER END TO A POINT ON SAID BOOM.
References Cited (Backward Citations)
US3080076A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-26 | 1969-01-25 | 1969-07-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-26 | 1973-01-25 | 1973-07-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-26 | 1977-01-25 | 1977-07-27 | $7700.00 | Window Closed / Lapsed |