US3863387A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ground protection covers
Assignee: Individual
•
Filing: 1973-02-08
•
Granted: 1975-02-04
•
Expires: 1993-02-08
Abstract
Abstract A ground protection cover for golf course greens which is made up of a plurality of flat panels, each comprising a translucent envelope of synthetic plastics material which contains expanded polystyrene in granule or flat slab form, the polystyrene having a maximum thickness of 1 inch so that it will not be too heavy as to damage the grass on which it will be used and so that sunlight can pass through the panels to enable the turf to grow whilst the cover is in position.
Inventors
- 👤 Joseph Webster
- 👤 Doreen Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:11
CPC Classifications
A; A63; A63C; A63C19/00; A63C19/12; Y; Y10; Y10S; Y10S273/00; Y10S273/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
147 words
A turf protection cover comprising a plurality of flat panels each comprising an envelope of synthetic plastics material containing expanded polystyrene in slab form, such envelope being transparent to sunlight, and the expanded polystyrene slab being of a maximum thickness of 1 inch to permit the passage of sunlight therethrough so that the panel can be used to protect turfed areas, whilst allowing sunlight to the grass, and being light enough to permit growth of the grass whilst the cover is in position, said panels being joined together edge to edge at peripheral regions of the panels and the peripheral region of each panel being defined by forming each envelope in two sheets of synthetic plastics material which are welded together at the edges, and wherein said peripheral regions have eye holes by which the panels may be pegged to the ground to hold same in position.
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) | 1978-02-03 | 1978-08-05 | 1979-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-02-03 | 1982-08-05 | 1983-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-02-03 | 1986-08-05 | 1987-02-04 | $7700.00 | Window Closed / Lapsed |