Patent US3278046A successfully refreshed from Google Patents.
US3278046A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backhoe support
Assignee: Case LLC
•
Filing: 1964-06-05
•
Granted: 1966-10-11
•
Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 John F Shumaker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:19
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/38; E02F3/382; E02F3/384
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
214 words
A BACKHOE SUPPORT STRUCTURE FOR SUPPORTING A BACKHOE ASSEMBLY ON A VEHICLE COMPRISING A FRAME ADAPTED TO BE MOUNTED ON A VEHICLE, A SWING TOWER ADAPTED TO SUPPORT THE BACKHOE ASSEMBLY, SAID SWING TOWER AND SAID FRAME HAVING A LIMITED SPACE BETWEEN THE SAME FOR ACCOMMODATING THE OTHER ELEMENTS OF SAID SUPPORT STRUCTURE, PIVOT MEANS MOUNTING SAID SWING TOWER UPON SAID FRAME FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS, A FIRST BEVEL GEAR SEGMENT FIXEDLY MOUNTED ON SAID SWING TOWER FOR COAXIAL ROTATION THEREWITH ABOUT SAID VERTICAL AXIS, A GENERALLY VERTICALLY EXTENDING MEMBER IN SAID LIMITED SPACE BETWEEN SAID SWING TOWER AND SAID FRAME HAVING A SECOND BEVEL GEAR SEGMENT THEREON IN MESH WITH SAID FIRST GEAR SEGMENT, MEANS CONNECTING SAID VERTICALLY EXTENDING MEMBER TO SAID FRAME FOR PIVOTAL MOVEMENT THEREOF ABOUT A HORIZONTAL AXIS, AND VERTICALLY DISPOSED DOUBLE ACTING HYDRAULIC CYLINDER MEANS CONNECTED TO SAID FRAME AND TO SAID VERTICALLY EXTENDING MEMBER AND LOCATED IN SAID LIMITED SPACE BETWEEN SAID SWING TOWER AND SAID FRAME, SAID CYLINDER MEANS HAVING VERTICALLY EXTENDING RODS MEANS MOVABLE VERTICALLY BY ACTUATION OF SAID CYLINDER MEANS TO ROTATE SAID SECOND GEAR SEGMENT ABOUT SAID HORIZONTAL AXIS AND TO THEREBY ROTATE SAID FIRST GEAR SEGMENT ABOUT SAID VERTICAL AXIS AND THUS PIVOT SAID SWING TOWER ABOUT SAID VERTICAL AXIS.
Claim 2
Dependent Claim
214 words
A BACKHOE SUPPORT STRUCTURE FOR SUPPORTING A BACKHOE ASSEMBLY ON A VEHICLE COMPRISING A FRAME ADAPTED TO BE MOUNTED ON A VEHICLE, A SWING TOWER ADAPTED TO SUPPORT THE BACKHOE ASSEMBLY, SAID SWING TOWER AND SAID FRAME HAVING A LIMITED SPACE BETWEEN THE SAME FOR ACCOMMODATING THE OTHER ELEMENTS OF SAID SUPPORT STRUCTURE, PIVOT MEANS MOUNTING SAID SWING TOWER UPON SAID FRAME FOR PIVOTAL MOVEMENT ABOUT A VERTICAL AXIS, A FIRST BEVEL GEAR SEGMENT FIXEDLY MOUNTED ON SAID SWING TOWER FOR COAXIAL ROTATION THEREWITH ABOUT SAID VERTICAL AXIS, A GENERALLY VERTICALLY EXTENDING MEMBER IN SAID LIMITED SPACE BETWEEN SAID SWING TOWER AND SAID FRAME HAVING A SECOND BEVEL GEAR SEGMENT THEREON IN MESH WITH SAID FIRST GEAR SEGMENT, MEANS CONNECTING SAID VERTICALLY EXTENDING MEMBER TO SAID FRAME FOR PIVOTAL MOVEMENT THEREOF ABOUT A HORIZONTAL AXIS, AND VERTICALLY DISPOSED DOUBLE ACTING HYDRAULIC CYLINDER MEANS CONNECTED TO SAID FRAME AND TO SAID VERTICALLY EXTENDING MEMBER AND LOCATED IN SAID LIMITED SPACE BETWEEN SAID SWING TOWER AND SAID FRAME, SAID CYLINDER MEANS HAVING VERTICALLY EXTENDING RODS MEANS MOVABLE VERTICALLY BY ACTUATION OF SAID CYLINDER MEANS TO ROTATE SAID SECOND GEAR SEGMENT ABOUT SAID HORIZONTAL AXIS AND TO THEREBY ROTATE SAID FIRST GEAR SEGMENT ABOUT SAID VERTICAL AXIS AND THUS PIVOT SAID SWING TOWER ABOUT SAID VERTICAL AXIS.
References Cited (Backward Citations)
US251291A
Cited
FR1046255A
Cited
US2837220A
Cited
US2903142A
Cited
US3117685A
Cited
DE1071311B
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-10 | 1970-04-11 | 1970-10-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-10 | 1974-04-11 | 1974-10-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-10 | 1978-04-11 | 1978-10-11 | $7700.00 | Window Closed / Lapsed |