US3346129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power shovel
Assignee: Link Belt Co
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Filing: 1965-10-18
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Granted: 1967-10-10
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Expires: 1985-10-18
Abstract
No abstract record available.
Inventors
- 👤 Robert M Carter
- 👤 George L Petrik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:36
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/304
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
210 words
IN A POWER SHOVEL HAVING A DIPPER STICK SUPPORTED FOR RECIPROCATING LONGITUDINAL MOVEMENT, AND FLEXIBLE MEANS EXTENDING IN OPPOSITE DIRECTIONS FROM THE POSITION AT WHICH THE DIPPER STICK IS SUPPORTED AND OPERATIVELY CONNECTED TO LONGITUDINALLY SPACED POINTS ON SAID DIPPER STICK SO THAT TENSION ALTERNATELY APPLIED TO THE ENDS OF THE FLEXIBLE MEANS REMOTE FROM THE OPERATIVE CONNECTIONS TO THE DIPPER STICK WILL EFFECT RECIPROCATING MOVEMENTS OF THE DIPPER STICK, THE IMPROVEMENT COMPRISING: DRUM MEANS ROTATABLY MOUNTED ON SAID POWER SHOVEL AND PROVIDING SEPARATE REELS, THE ENDS OF SAID FLEXIBLE MEANS REMOTE FROM THE OPERATIVE CONNECTIONS TO THE DIPPER STICK BEING WOUND AROUND SAID SEPARATE REELS AND SECURED THERETO SO THAT ROTATION OF BOTH REELS IN ONE DIRECTION WILL APPLY TENSION TO ONE ASSOCIATED END OF SAID FLEXIBLE MEANS WHILE SIMULTANEOUSLY RELEASING THE OTHER ASSOCIATED END OF THE FLEXIBLE MEANS, AND ROTATION OF BOTH REELS IN THE OPPOSITE DIRECTION WILL RELEASE SAID ONE ASSOCIATED END FOR THE FLEXIBLE MEANS AND WILL APPLY TENSION TO SAID OTHER ASSOCIATED END OF THE FLEXIBLE MEANS, SAID REELS BEING OPERATIVELY CONNECTED TO EACH OTHER IN A MANNER TO POSITIVELY PREVENT ROTATION OF EITHER REEL RELATIVE TO THE OTHER IN A DIRECTION TO SIMULTANEOUSLY RELEASE THE TENSION IN THE ASSOCIATED ENDS OF SAID FLEXIBLE MEANS,
Claim 2
Dependent Claim
210 words
IN A POWER SHOVEL HAVING A DIPPER STICK SUPPORTED FOR RECIPROCATING LONGITUDINAL MOVEMENT, AND FLEXIBLE MEANS EXTENDING IN OPPOSITE DIRECTIONS FROM THE POSITION AT WHICH THE DIPPER STICK IS SUPPORTED AND OPERATIVELY CONNECTED TO LONGITUDINALLY SPACED POINTS ON SAID DIPPER STICK SO THAT TENSION ALTERNATELY APPLIED TO THE ENDS OF THE FLEXIBLE MEANS REMOTE FROM THE OPERATIVE CONNECTIONS TO THE DIPPER STICK WILL EFFECT RECIPROCATING MOVEMENTS OF THE DIPPER STICK, THE IMPROVEMENT COMPRISING: DRUM MEANS ROTATABLY MOUNTED ON SAID POWER SHOVEL AND PROVIDING SEPARATE REELS, THE ENDS OF SAID FLEXIBLE MEANS REMOTE FROM THE OPERATIVE CONNECTIONS TO THE DIPPER STICK BEING WOUND AROUND SAID SEPARATE REELS AND SECURED THERETO SO THAT ROTATION OF BOTH REELS IN ONE DIRECTION WILL APPLY TENSION TO ONE ASSOCIATED END OF SAID FLEXIBLE MEANS WHILE SIMULTANEOUSLY RELEASING THE OTHER ASSOCIATED END OF THE FLEXIBLE MEANS, AND ROTATION OF BOTH REELS IN THE OPPOSITE DIRECTION WILL RELEASE SAID ONE ASSOCIATED END FOR THE FLEXIBLE MEANS AND WILL APPLY TENSION TO SAID OTHER ASSOCIATED END OF THE FLEXIBLE MEANS, SAID REELS BEING OPERATIVELY CONNECTED TO EACH OTHER IN A MANNER TO POSITIVELY PREVENT ROTATION OF EITHER REEL RELATIVE TO THE OTHER IN A DIRECTION TO SIMULTANEOUSLY RELEASE THE TENSION IN THE ASSOCIATED ENDS OF SAID FLEXIBLE MEANS,
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) | 1970-10-09 | 1971-04-10 | 1971-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-09 | 1975-04-10 | 1975-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-09 | 1979-04-10 | 1979-10-10 | $7700.00 | Window Closed / Lapsed |