US3140586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydraulically operated apparatus
Assignee: Individual
•
Filing: 1961-09-11
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Granted: 1964-07-14
•
Expires: 1981-09-11
Abstract
No abstract record available.
Inventors
- 👤 Joelson Karl-Evert Anders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:20
CPC Classifications
F; F16; F16H; F16H43/00; B; B25; B25D; B25D11/00; B25D11/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A HYDRAULICALLY OPERATED PERCUSSIVE APPARATUS COMPRISING A SUMP ON THE APPARATUS, CONTAINING HYDRAULIC LIQUID, A FIRST CYLINDER, A DRIVE PISTON SLIDABLE IN SAID FIRST CYLINDER, ECCENTRIC MEANS FOR RECIPROCATING SAID DRIVE PISTON SO THAT THE DRIVE PISTON ATTAINS ITS MAXIMUM SPEED IN THE DRIVING DIRECTION AT A POSITION INTERMEDIATE THE ENDS OF ITS STROKE, A SECOND CYLINDER HAVING A SMALLER DIAMETER THAN SAID FIRST CYLINDER, AN IMPACT PISTON SLIDABLE IN SAID SECOND CYLINDER, PASSAGEWAY MEANS BETWEEN THE FIRST AND SECOND CYLINDERS, MEANS TO SUPPLY THE PASSAGEWAY
Claim 2
Dependent Claim
86 words
A HYDRAULICALLY OPERATED PERCUSSIVE APPARATUS COMPRISING A SUMP ON THE APPARATUS, CONTAINING HYDRAULIC LIQUID, A FIRST CYLINDER, A DRIVE PISTON SLIDABLE IN SAID FIRST CYLINDER, ECCENTRIC MEANS FOR RECIPROCATING SAID DRIVE PISTON SO THAT THE DRIVE PISTON ATTAINS ITS MAXIMUM SPEED IN THE DRIVING DIRECTION AT A POSITION INTERMEDIATE THE ENDS OF ITS STROKE, A SECOND CYLINDER HAVING A SMALLER DIAMETER THAN SAID FIRST CYLINDER, AN IMPACT PISTON SLIDABLE IN SAID SECOND CYLINDER, PASSAGEWAY MEANS BETWEEN THE FIRST AND SECOND CYLINDERS, MEANS TO SUPPLY THE PASSAGEWAY
References Cited (Backward Citations)
FR372844A
Cited
US2645138A
Cited
US2638749A
Cited
US2919650A
Cited
US2882685A
Cited
US2982255A
Cited
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 |