US3606796A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vibratory soil compacting apparatus
Assignee: Bopparder Maschinenbau GmbH
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Filing: 1969-06-24
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Granted: 1971-09-21
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Expires: 1989-06-24
Abstract
Abstract THE INVENTION IS CONCERNED WITH AN UNBALANCED CENTRIFUGAL FORCE GENERATOR FOR A VIBRATORY SOIL COMPACTING APPARATUS, THE GENERATOR COMPRISING A ROTARY SHAFT, A FIRST UNBALANCED ECCENTRIC MASS MOUNTED ON SAID SHAFT AT A FIXED DISTANCE FROM SAID SHAFT, A SECOND UNBALANCED ECCENTRIC MASS, MEANS MOUNTING SAID SECOND MASS ON SAID SHAFT FOR MOVEMENT RADIALLY THEREOF WHEREBY SAID SECOND MASS CAN MOVE RADIALLY OUTWARDLY CENTRIFUGALLY UPON ROTATION OF SAID SHAFT, AND SPRING MEANS OPPOSING SAID RADIAL OUTWARD MOVEMENT.
Inventors
- 👤 Rudolf Pappers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:48
CPC Classifications
E; E02; E02D; E02D3/00; E02D3/02; E02D3/046; E02D3/074; B; B06; B06B; B06B1/00; B06B1/10; B06B1/16; B06B1/161; B06B1/162; B06B1/164; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18544; Y10T74/18552
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |