Patent US3140785A successfully refreshed from Google Patents.
US3140785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Backhoe
Assignee: Ware Machine Works Inc
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Filing: 1963-03-07
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Granted: 1964-07-14
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Expires: 1983-03-07
Abstract
No abstract record available.
Inventors
- 👤 John S Pilch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:06
CPC Classifications
E; E02; E02F; E02F3/00; E02F3/04; E02F3/28; E02F3/30; E02F3/306
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
IN A DEVICE OF THE CHARACTER DESCRIBED, A BOOM, A DIPPER STICK PIVOTALLY CONNECTED TO SAID BOOM, SAID DIPPER STICK INCLUDING AN ADJUSTABLE EXTENSION AND CARRYING A BUCKET ADJACENT ITS LOWER END, HYDRAULIC MEANS FOR PIVOTING SAID DIPPER STICK RELATIVE TO SAID BOOM, SAID HYDRAULIC MEANS BEING PIVOTALLY CONNECTED ADJACENT ITS OPPOSITE ENDS TO SAID BOOM AND SAID ADJUSTABLE EXTENSION OF SAID DIPPER STICK, AND MEANS CONNECTING SAID DIPPER STICK AND SAID ADJUSTABLE EXTENSION THEREOF FOR VARYING THE DISTANCE BETWEEN THE PIVOT CONNECTION OF SAID DIPPER STICK AND SAID BOOM AND THE PIVOTAL CONNECTION OF SAID HYDRAULIC MEANS TO SAID DIPPER STICK EXTENSION SUCH AS TO THEREBY VARY THE SPEED OF OPERATION AND POWER OF THE APPARATUS.
Claim 2
Dependent Claim
117 words
IN A DEVICE OF THE CHARACTER DESCRIBED, A BOOM, A DIPPER STICK PIVOTALLY CONNECTED TO SAID BOOM, SAID DIPPER STICK INCLUDING AN ADJUSTABLE EXTENSION AND CARRYING A BUCKET ADJACENT ITS LOWER END, HYDRAULIC MEANS FOR PIVOTING SAID DIPPER STICK RELATIVE TO SAID BOOM, SAID HYDRAULIC MEANS BEING PIVOTALLY CONNECTED ADJACENT ITS OPPOSITE ENDS TO SAID BOOM AND SAID ADJUSTABLE EXTENSION OF SAID DIPPER STICK, AND MEANS CONNECTING SAID DIPPER STICK AND SAID ADJUSTABLE EXTENSION THEREOF FOR VARYING THE DISTANCE BETWEEN THE PIVOT CONNECTION OF SAID DIPPER STICK AND SAID BOOM AND THE PIVOTAL CONNECTION OF SAID HYDRAULIC MEANS TO SAID DIPPER STICK EXTENSION SUCH AS TO THEREBY VARY THE SPEED OF OPERATION AND POWER OF THE APPARATUS.
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |