US3131493A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power shovel machine
Assignee: Individual
•
Filing: 1962-06-01
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Granted: 1964-05-05
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Expires: 1982-06-01
Abstract
No abstract record available.
Inventors
- 👤 Robert G Letourneau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:22
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/36; E02F3/42; E02F3/427; E02F3/283; E02F3/30; E02F3/308; E02F3/34; E02F3/3417; E02F3/40; E02F3/401
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
235 words
A POWER SHOVEL MACHINE COMPRISING AN ELONGATE MAIN FRAME SUPPORTED ON FRONT AND REAR WHEEL AND AXLE ASSEMBLIES; A SHOVEL IN THE FORM OF AN ARCUATE TROUGH HAVING END CLOSURES AND A PLURALITY OF DIGGER TEETH PROJECTING OUTWARDLY FROM ONE SIDE OF SAID TROUGH; AN ELONGATED FIRST RACK PIVOTALLY CONNECTED AT ONE END TO SAID MAIN FRAME ADJACENT THE FRONT END THEREOF SO AS TO PROVIDE FOR SWINGING MOTION IN A VERTICAL PLANE; A PUSH BEAM EXTENDING GENERALLY LONGITUDINALLY OF SAID MAIN FRAME AND HAVING A FIRST YOKE AT THE FRONT END THEREOF AND A SECOND YOKE AT THE REAR END THEREOF; MEANS JOURNALLING SAID SHOVEL END CLOSURES TO THE RESPECTIVE END PORTIONS OF SAID FIRST YOKE FOR ROTATION ABOUT A HORIZONTAL AXIS; FIRST GEAR REDUCTION MEANS FIXED TO SAID FIRST YOKE AND HAVING AN OUTPUT PINION ENGAGING SAID FIRST RACK; A PAIR OF ARM MEMBERS PIVOTALLY FIXED AT ONE END TO RESPECTIVE ENDS OF SAID SECOND YOKE AND PIVOTALLY CONNECTED AT THE OTHER END TO SAID MAIN FRAME ADJACENT THE REAR END THEREOF; A SECOND RACK PIVOTALLY FIXED TO SAID SECOND YOKE AND EXTENDING REARWARDLY THEREFROM; SECOND GEAR REDUCTION MEANS FIXED TO SAID MAIN FRAME AND HAVING AN OUTPUT PINION ENGAGING SAID SECOND RACK; AN ARCUATE RACK FIXED TO THE OUTER PERIPHERY OF SAID SHOVEL; AND THIRD GEAR REDUCTION MEANS FIXED TO SAID FIRST YOKE AND HAVING AN OUTPUT PINION ENGAGING SAID ARCUATE RACK.
Claim 2
Dependent Claim
235 words
A POWER SHOVEL MACHINE COMPRISING AN ELONGATE MAIN FRAME SUPPORTED ON FRONT AND REAR WHEEL AND AXLE ASSEMBLIES; A SHOVEL IN THE FORM OF AN ARCUATE TROUGH HAVING END CLOSURES AND A PLURALITY OF DIGGER TEETH PROJECTING OUTWARDLY FROM ONE SIDE OF SAID TROUGH; AN ELONGATED FIRST RACK PIVOTALLY CONNECTED AT ONE END TO SAID MAIN FRAME ADJACENT THE FRONT END THEREOF SO AS TO PROVIDE FOR SWINGING MOTION IN A VERTICAL PLANE; A PUSH BEAM EXTENDING GENERALLY LONGITUDINALLY OF SAID MAIN FRAME AND HAVING A FIRST YOKE AT THE FRONT END THEREOF AND A SECOND YOKE AT THE REAR END THEREOF; MEANS JOURNALLING SAID SHOVEL END CLOSURES TO THE RESPECTIVE END PORTIONS OF SAID FIRST YOKE FOR ROTATION ABOUT A HORIZONTAL AXIS; FIRST GEAR REDUCTION MEANS FIXED TO SAID FIRST YOKE AND HAVING AN OUTPUT PINION ENGAGING SAID FIRST RACK; A PAIR OF ARM MEMBERS PIVOTALLY FIXED AT ONE END TO RESPECTIVE ENDS OF SAID SECOND YOKE AND PIVOTALLY CONNECTED AT THE OTHER END TO SAID MAIN FRAME ADJACENT THE REAR END THEREOF; A SECOND RACK PIVOTALLY FIXED TO SAID SECOND YOKE AND EXTENDING REARWARDLY THEREFROM; SECOND GEAR REDUCTION MEANS FIXED TO SAID MAIN FRAME AND HAVING AN OUTPUT PINION ENGAGING SAID SECOND RACK; AN ARCUATE RACK FIXED TO THE OUTER PERIPHERY OF SAID SHOVEL; AND THIRD GEAR REDUCTION MEANS FIXED TO SAID FIRST YOKE AND HAVING AN OUTPUT PINION ENGAGING SAID ARCUATE RACK.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |