US3256785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground covering apparatus
Assignee: Pintsch Bamag AG
•
Filing: 1963-04-11
•
Granted: 1966-06-21
•
Expires: 1983-04-11
Abstract
No abstract record available.
Inventors
- 👤 Stammbach Fritz
- 👤 Stangl Otto
- 👤 Voigt Otto
- 👤 Andres Helmut
- 👤 Woerfel Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 15:54
CPC Classifications
E; E01; E01C; E01C9/00; E01C9/08; E01C9/083
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
APPARATUS ADAPTED FOR BEING PLACED DIRECTLY ON SUBSOIL TO ENABLE PASSAGE THEREOVER, SAID APPARATUS COMPRISING A PLURALITY OF PLATES EACH OF POLYGONAL SHAPE INCLUDING CORNER PORTIONS, AND SUPPORT, MEANS FOR SUPPORTING A PLURALITY OF PLATES AT THE CORNER PORTIONS THEREOF, SAID SUPPORT MEANS BEING PLACED DIRECTLY ON THE SUBSOIL, SAID PLATES INCLUDING BALL MEMBERS AT SAID CORNER PORTIONS LYING SUBSTANTIALLY IN THE PLANE OF THE RESPECTIVE PLATES, SAID SUPPORT MEANS COMPRISING A TWO SHELL SUPPORT MEMBER INCLUDING A PLURALITY OF SOCKETS FOR THE ROTATABLE ACCOMMODATION OF BALL MEMBERS AT THE CORNER PORTIONS OF THE PLATES, AND MEANS FOR DETACHABLY LOCKING THE UPPER AND LOWER SHELLS TOGETHER WITH THE BALL MEMBERS OF THE PLATES ROTATABLY ACCOMMODATED THEREIN.
Claim 2
Dependent Claim
116 words
APPARATUS ADAPTED FOR BEING PLACED DIRECTLY ON SUBSOIL TO ENABLE PASSAGE THEREOVER, SAID APPARATUS COMPRISING A PLURALITY OF PLATES EACH OF POLYGONAL SHAPE INCLUDING CORNER PORTIONS, AND SUPPORT, MEANS FOR SUPPORTING A PLURALITY OF PLATES AT THE CORNER PORTIONS THEREOF, SAID SUPPORT MEANS BEING PLACED DIRECTLY ON THE SUBSOIL, SAID PLATES INCLUDING BALL MEMBERS AT SAID CORNER PORTIONS LYING SUBSTANTIALLY IN THE PLANE OF THE RESPECTIVE PLATES, SAID SUPPORT MEANS COMPRISING A TWO SHELL SUPPORT MEMBER INCLUDING A PLURALITY OF SOCKETS FOR THE ROTATABLE ACCOMMODATION OF BALL MEMBERS AT THE CORNER PORTIONS OF THE PLATES, AND MEANS FOR DETACHABLY LOCKING THE UPPER AND LOWER SHELLS TOGETHER WITH THE BALL MEMBERS OF THE PLATES ROTATABLY ACCOMMODATED THEREIN.
References Cited (Backward Citations)
US791017A
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GB267832A
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GB312293A
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US2025815A
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GB410404A
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NL35744C
Cited
US2421171A
Cited
US2531892A
Cited
FR1134770A
Cited
US3096695A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-06-20 | 1969-12-20 | 1970-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-20 | 1973-12-20 | 1974-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-20 | 1977-12-20 | 1978-06-21 | $7700.00 | Window Closed / Lapsed |